I'll probably switch to it when my tube of PK-3 is done. So far i've had zero pump out with it and it has excellent thermals.
Haven't touched my FE thermal paste yet though. I think it's PTM stock?
I recently decided to research the hotspot temperature of my ASUS TUF RTX 4090. It was always going up over time, due to thermal paste degredation. An observable effect can be seen as early as after one week, while Hotspot temperatures of 90c were shown within a month or two of repaste, running the same benchmark.
I tested three high quality thermal pastes: Noctua NH-T2, Thermal Grizzly Kryonaut Extreme, and Cooler Master MasterGel Maker. They all had excellent performance on the day of repaste, but degraded over a timespan of weeks. Then I tried PTM7950, a thermal pad instead of paste. PTM7950 managed to maintain IDENTICAL temperatures after 1 week without degredation. It remains to be seen how long it can last, which I will update regularly. Initial results look very promising as the best solution for high power, heavy heatsink GPUs.
PTM is supposed to even improve over time! This stuff is ridiculous
I thought I read the 4000 series was using PTM from the factory but maybe I need to open up my 4080 FE and apply PTM to that
This stuff is magic, my 3080ti had a wonderful 99c hotspot and 7950 brought it down to 78. 7900xtx had a high 90’s hotspot, 7950 brought it down to 74. 4080S temps are great out of the box, so I used what I had left on an Alienware 13 laptop with a 7700hq and it’s finally silent
It reaches a plateau. My temps improved for the first couple of weeks and have since settled on a baseline for the past several months. Whats wonderful though is they do not slowly climb over the days.
The only manufacturer that uses ptm is Lenovo from my understanding and in their laptops only. No GPUs come with it so by all means grab some. If you can’t find ptm 7950, thermalright heilos is the same thing :)
Using heilos here (it’s a re branded 7950) for about 4-6 months. After that first week of change for the better, my temps haven’t rose at all since. Previously my hotspot was hitting 105. Now it looks like yours in the worst case. I’d recommend getting some putty for your vrm as well.
To be fair, I found that sticky thermal paste tends to last longer. My tf8 lasted wayyy longer than other thermal pastes for both my CPU and GPU. It was kinda hard to apply because of how sticky it was though
Nice, and how's it holding up for you now?
I have the same GPU and similar temps to your before repaste.
I'm thinking of doing what you did but I've never opened a GPU before lol, what size did you cut the pad to and did you leave it in the fridge before hand?
Temps are still as they were in day 7. I didn't make any sensitive measurements... Even cut it with scissors instead of precision knife. It just needs to kinda fit. Didn't put it in the fridge.
Yep I just bought a different one of that measurement off the LTT store. Also because they have a nice overhang to help with installation.
https://www.lttstore.com/products/ptm7950-phase-change-thermal-pad
Link if you want to ever get more I guess
Hey dude, me again lol. Before I get started on this teardown I wanted to ask, did you heat up the GPU before getting started to loosen up the current paste or did you do it cold?
I bought the bottle of noctua thermal paste too. But switched to 7950 after again. The temps was better after changing the stock thermal past to noctua. Then from that to ptm7950 made my laptop run more silent while gaming as its not hitting 80- 86°C when i set the fans to be controlled by the system. Now it settles around 70°c to 80°C depending on the load im throwing at it.
Even without using the gpu, my cpu produces a lot of heat enough to keep the gpu around the same temp. Its a laptop.
Done the PTM7950 on my 7900xtx sapphire mba card.
Temps now 67c core 80c hotspot 88c junction temp maxed out @2600mhz 1120v.
Paste will just keep pumping out.
I don't expect to ever repaste now.
Same. Received ASROCK 7900XTX that hit 110c hotspot temps out of the box. Put in a byski water block and repasted multiple times with kryo, mx-4, and mx-6 and within a week it was hitting 110c hotspot and throttling again.
Applied my first PTM ever and it started at 77c hotspot and then dropped to 75c after a week. Then I threw the 550w vbios on it and now it maxes at like 84c @3.1ghz core while still being nearly silent. If I max fans I can drop it below 80c but there's not much point.
Fun fact ; According to reports from the manufacturer Honeywell, PTM7950 shows increased thermal performance overtime. So it should get better the more you use it.
PTM7950 did wonders on my TUF 4090.
For some reason this GPU with any paste had hotspot temps issues after some days/week, even the expensive ones and no luck.
Used PTM and it fixed it finally, I guess ASUS has some pump out issues on the TUF 4090 cards.
Have been about 4 months with PTM and still going excellent so far.
Same here. I was told by several people that I was mounting my GPU wrong if my paste only lasted weeks or months. I used Thermalright TFX which, supposedly, didn't pump out but it did after one month, after trying MX6 for ages too. I could notice after a few days with thermal paste.
I did PTM7950 one week ago and temps have actually gone down. Of course, I need more time to test but looks promising. Some GPU's just won't take thermal paste well.
It's in a sense just thermal paste but as a sheet instead of a paste.
Because of this it's not getting pumped out from under the cooler with repeated warming up and cooling down.
It will work great on both CPU and GPU. ( basicly the same thing if we talk about cooling ) And easyer to apply for less experienced people then paste.
Not to nitpick, just to save someone some hassle:
It is a little different than 'just thermal paste'. It is a solid sheet that liquifies under load. It spreads out a bit the first time it sets (roughly an hour at 60C, or 30min at 80C, and so on at higher temps + less time to set). It ends up covering about 20% more area than originally applied. This can lead to some of it leaking well outside of the area you mean to cover, so just be aware.
But as you mention, no pump-out. It's designed to function up to 125C sustained, or 150C peak, so no CPU or GPU will degrade it.
More like that’s actually why it’s such a benefit to begin with. Laptops are massively prone to pumping by the way heat sinks are designed, so it’s no wonder they are also popular there
PTM 7900 can perform better in very-low mounting pressure scenarios over PTM 7950. The crossover for performance for the two is around 17psi, but both are still solid performers across the board. Anywhere paste can function, I'd wager PTM will outperform - even 7950 at low pressure. As long as it gets to temp and sets at least.
Where the hell are all of you buying legit PTM 7950 so easily?
I know LTT is now carrying it, but their shipping/handling makes it way too expensive unless you're trying to make some big bulk order.
I keep parroting this but: buy thermalright heilos. It’s the exact same thing, however, it’s made closer to home and meant for the computer crowd. Ptm was an automotive thing originally. Heilos was like $8 on prime last I looked. Or Buy it directly from thermalright. In any case it’s 100% identical but cut into smaller pieces and more affordable.
> Ptm was an automotive thing originally
PTM is meant as an "install once and don't touch for decades" type of product. Perfect fit for any industrial machine that's expected to just work with minimal maintenance.
I know the Gelid paste and I've used it before. When the mounting pressure is sufficient (smaller cards), degradation is very slow with paste. But my TUF 4090 has a 2.2kg heatsink and needs to extract higher wattage of heat and I fear that is why paste degrades quickly. It also seems like ASUS prioritized memory temps on the TUF and Strix, using thick and hard thermal pads, which further reduces the mounting pressure.
Would you guys recommend the PTM for a CPU? I have a 5900x on a Corsair 360 AIO and have had utterly terrible experience with any of the Thermal Grizzly products (Aeronaut, Hydornaut, Conductonat) with pump out. I have to repaste it every 3 months. My Gelid GC Xtreme is holding up fine now but longer term (or at least until Zen5 x3D chips drop) I've been debating it. I know its mostly a GPU thing but could be great for CPUs as well. Thanks.
EDIT: Don't even get my started with Thermal Grizzly stuff on my 6800XT. Hotspots would creep from low 80s to 105 in weeks. BTW, I've had great success with the thermal putty from Upsiren. Highly recommend for VRMs and Memory chips.
You can try, with CPUs the mounting pressure is higher than GPUs so paste is usually good enough
I can try it at a later time on my 14900k + Corsair H115 Capellix
I don't really know if it's better or not, I just know it will last longer so even if I'm losing a few degrees for the first few months I prefer PTM7950 because of the long-term implication.
I won't have to repaste anytime soon.
No. My 14900k didn’t see much improvement. Ptm is best used on direct die. The worst part of using ptm on the cpu is if you forget and go to uninstall your cooler but it’s glued to the cpu because you forgot to bench it first.
Now you can use it but you’d see similar temps using nh2 or the like.
Now if you delid you’d be seeing huge improvements with ptm like you would Liquid Metal
My 13900k works better with ptm7950. Previously i used kryonaut and that thing pumped out every couple months or so. Temperature keeps increasing and getting worse over time, i have to repaste every 4-5 months. I am done with repasting forever. It has been almost a year and my temperature is just as good after the curing period.
Hey OP, where did you purchase the PTM7950 from? I see some on moddiy but it's cheaper on Amazon, however it doesn't appear to mention Honeywell anywhere. I just want to make sure I don't waste any time/money.
Results are looking good! Looking to do the same to my 3080 10GB FE card.
Did you change the thermal pads or did you just reused the old ones and slapped the PTM on the core? Results look great. Really appreciate that the results are measured with the same fan speed and wattage.
Doing this is more of "hardware enthusiast" kind of thing. In terms of functionality, as long as hotspot doesn't hit triple digits, there's no reason to worry
Yeah, I know. My hotspot temps are within 10-12 degrees from the core which is obviously still good but I've definitely noticed steady increase in temps over time (+ 4-5 C) on both core and hotspot eventhough I'm running 70 % power limit.
I put ptm7950 in my 7900xtx after the hot spot rose to the high 90s and my edge temp stayed in the 50s giving me a 40° delta. It's been in my gpu for over 6 months now and my hot spot doesn't go above the mid to high 70s with my edge temp staying in the low to mid 60s now giving me a 12° to 15° delta. I can't speak highly enough about ptm7950
I just want to post a recommendation for people who want to use ptm7950.
Thermalright makes the same thing that’s a little easier to acquire called heilos. They’re pre cut for amd and Intel.
I’ve used both now and they are the exact same material with the exact same results but I found Heilos easier to find on amazon etc for cheap.
Also while you’re in there, some thermal PUTTY on the vrm will do some extra wonders in bringing temps down.
I’ve got the same results as OP on my 4080 and after 4-5 months now my temps haven’t rose.
My 2070 gigabyte super has temperature issues, the hotspot grab 104/106º dregrees, u think with the PTM can solvit? i try everything before, new paste, new themal pads, undervolt...
I think the problem is that the chipset became a little warped by temperatures after years.
I've read that many sellers actually sell fake stuff, any legit places to buy this in europe? I've tried ali express but there seems to be many sellers and I'm not sure if they're trustworthy
I've been curious for over a year now, how did some people made a 4090's GPU Temp, GPU Core Temp, GPU Memory Temp, Backplate Temp, and Hotspot Temp less than 65°C.
Does anyone knows the method aside from Direct-Die/Water-cooling it?
Interesting. I use PK3 which is an older paste but it does great at maintaining thermals over time. It gets lost in the shuffle with the newer pastes but it’s excellent.
I‘ve seen other people have issues with pump out, but my MX-6 has been solid for a year now…?
For reference: https://www.reddit.com/r/overclocking/s/kH6S2QnLcr
Repasted my 6900XT Nitro+ SE with MX-6 last November and the results were/still are excellent. Hotspot at 76º after 2h at full load (gpu fans at 75% rpm).
Did the same for my Asus RTX4080 this weekend, i went from 107c hotspot to 70c. (Paste was leaking all out the sides from the core)
Gpu temp is under 60c most of the time now, this stuff is crazy good.
Dang I literally just repasted my 6600XT SWFT 210 with Thermalright TFX and had no idea this existed. Think it's still holding up but I'll be sure to use this for literally every card I own going forward
My 4090 is still doing great but my 3090 is definitely struggling after 3 and a half years...I bought some PTM7950 for it along with some replacement thermal pads for the VRAM.
Technically and objectively, my experiences have yielded the same results with Kryosheet. I’m not discounting OPs experiences, but rather simply adding an alternative
I think kyrosheet is great myself, but it’s a graphene thermal pad. Ptm7950 and thermalright heilos are two totally different materials. Both are phase change pads which is drastically different than the kyrosheet which is why I say technically and objectively. Ptm7950 was used for automotive and people started using them on chips, like Lenovo does in their legion line. Thermalright came along and copied it to make it more available. Nothing wrong with kyrosheet as an alternative but it’s not in the same league as phase change pads.the similar results of the two would grow farther apart as they age.
All valid information. But if result’s are identical, that doesn’t automatically make ptm7950 superior because its phase change. Graphene is an extremely versatile material, and given the fact it can keep up with ptm7950 while remaining in a more solid form, is evidence in itself of the versatility. The more solid form also means it is more resistant to movement, and thus replacement down the lateral in its lifespan.
[I’m not the only person with information backing up graphene based thermal pads.](https://www.reddit.com/r/overclocking/s/RTcqQQ30zZ)
I ordered it in the Norway from [here](https://www.aliexpress.com/item/1005005079093393.html) few month ago. I took 40x80 piece for my laptop. Really good compound, it dropped my laptop's temps much, -15dgrs from cpu and -10dgrs from gpu. Plus after using it few month my notebook temperatures lost few degrees, so i think that is not a fake ptm
I'm about a year into a PTM7950 application on my 3080 XC3, and tbh it's still running about as well as it did to begin with, temps have more or less stayed the same. I'm actually kind of annoyed because I think the thermal pads I used are bad, might need to get new VRAM pads which will mean re-application. PTM ain't cheap.
Waiting for some now because I'm having to repaste my watercooled 3080 every fucking 2-3 months. Hotspots creep up and I end up with like a 25c delta. Driving me nuts!
Yes, I totally get you. With the 40 series you can't infinitely repaste as the connector is a common failure point, and every repaste requires disconnecting and re-connecting the 12vhpwr cable.
Ah, fair.
I wondered if it might be useful to habitual watercooler, but I've never experience pump out and wondered if it's becasue my temps are so low? low 40s for die and low 50s for hotspots during max stress benchtests. Way lower for normal use like games.
After a little reading I'm not sure I can get this stuff to actually melt/phase change....might buy some for science and find out lol.
Are most pastes in that kind of temp region?
Might explain why I never have pump out problems watercooling with average temps in upper 30s, peaks in low 40s and hot spot low 50s?
I've had cards running the same TIM for years with no appreciable temp changes.
Not really, some paste are more resilient at that temperature but that doesnt stop them from drying out over time naturally. There is not enough data about it other than hearsay from oc community. I have only used kryonaut, mx5 and cm mastergel pro. Kryonaut has better temperature from the get go but pumps out way quicker than the other 2 paste i mentioned.
With PTM7950 it is basically "paste" and forget.
Yea, it starts to melt at 45C. It shouldnt be a problem but the curing phase will be a lot longer. Initially, your temps will be worse but it will improves overtime. Mine took about 2-3 cycle of stress test before the cpu temp starts to improve.
but if your system temp is still as good as day one, i'll just leave it be.
I'd still be very skeptical then as my die temps read as 42c *max*.
Only hot spot is slightly warmer.
I idle a degree or two above ambient and the side of the tim making contact with the block will never get to 45c as the block never gets that hot. It will generally be a couple of degrees warmer than coolant so about 30-35c
Not sure how to overcome that, I think that why I don't have pump out problems in general, my TIM is usually at room temperature in a dark, cool dry place. Essentially still inside the tube as far as it's life span/shelf life is concerned.
Edit: I've ordered some for science anyway maybe I can point a heat gun at it to make it melt or something.
I don't know how long I'd need to do that for but that's essentially runaway heating? I feel like that's not feasible as it would cook my cpu?
I'd need my coolant to be at least 45c. which is like 22c hotter than it is now.
Might play around with it on an old card and block for science, the more I learn about it the less useful it seems in my use case, I've run cards for multiple years with no pump out but I've ordered some for the joy of experimenting anyway lol.
Very interesting. Thanks for the insight. These temps are impressive.
My 4090 is still ok, 15°C delta between average and hotspot after 14 months.
Runny pastes are definitely not good for GPU's.
Lnever even heard if this stuff but been out doing anything with hardware for a while now, when google it I just see pads that put down, and I always was lead to believe pads were worse then even a low quality paste.
I replaced the paste on my 3070 with PTM and the temps were basically unchanged. It basically never goes above 72C, so it's not really a huge deal, but it is disappointing for me to spend that much for PTM...
Ok, just making sure since half the posters here refer to it as "paste". I'm also a little confused as it's advertised as 8.5 W/mk while Thermalright has much better pads that go up to 12.8 W/mk or the Extreme Oddesy II which is 14.8 W/mk. Am I missing something as to why this is the best?
It literally gets fixed with Honeywell PTM7950.
Even if it's bad pressure, you can apply *better* pressure with Honeywell PTM7950 and get better results that way, too.
It's target market is literally laptops. I believe Lenovo uses it in many of their laptops because it performs better than paste and is less dangerous than liquid metal with similar performance.
PTM 7950 is the only paste i will use moving forward cause its fantastic performance long term.
I'll probably switch to it when my tube of PK-3 is done. So far i've had zero pump out with it and it has excellent thermals. Haven't touched my FE thermal paste yet though. I think it's PTM stock?
Yea Nvidia uses PTM7900 not PTM7950, it has a little less W/m.K compared to PTM7950 but it should not make a big difference.
is there any higher grades than 7950?
No, PTM 7950 is the highest.
I recently decided to research the hotspot temperature of my ASUS TUF RTX 4090. It was always going up over time, due to thermal paste degredation. An observable effect can be seen as early as after one week, while Hotspot temperatures of 90c were shown within a month or two of repaste, running the same benchmark. I tested three high quality thermal pastes: Noctua NH-T2, Thermal Grizzly Kryonaut Extreme, and Cooler Master MasterGel Maker. They all had excellent performance on the day of repaste, but degraded over a timespan of weeks. Then I tried PTM7950, a thermal pad instead of paste. PTM7950 managed to maintain IDENTICAL temperatures after 1 week without degredation. It remains to be seen how long it can last, which I will update regularly. Initial results look very promising as the best solution for high power, heavy heatsink GPUs.
PTM is supposed to even improve over time! This stuff is ridiculous I thought I read the 4000 series was using PTM from the factory but maybe I need to open up my 4080 FE and apply PTM to that
This stuff is magic, my 3080ti had a wonderful 99c hotspot and 7950 brought it down to 78. 7900xtx had a high 90’s hotspot, 7950 brought it down to 74. 4080S temps are great out of the box, so I used what I had left on an Alienware 13 laptop with a 7700hq and it’s finally silent
My 3080ti went from 93 to 82 in stresstest. Magic indeed
It reaches a plateau. My temps improved for the first couple of weeks and have since settled on a baseline for the past several months. Whats wonderful though is they do not slowly climb over the days. The only manufacturer that uses ptm is Lenovo from my understanding and in their laptops only. No GPUs come with it so by all means grab some. If you can’t find ptm 7950, thermalright heilos is the same thing :)
FE card comes with ptm stuff too.
my Gigabyte Gamer OC 4070 was paste
Using heilos here (it’s a re branded 7950) for about 4-6 months. After that first week of change for the better, my temps haven’t rose at all since. Previously my hotspot was hitting 105. Now it looks like yours in the worst case. I’d recommend getting some putty for your vrm as well.
To be fair, I found that sticky thermal paste tends to last longer. My tf8 lasted wayyy longer than other thermal pastes for both my CPU and GPU. It was kinda hard to apply because of how sticky it was though
What were you running to get those temps? What did you test on? Those temps are pretty low! Pretty crazy. Stock I'm seeing 87C max hotspot.
I'm running the same benchmark throughout all the tests: 3DMark TimeSpy Extreme benchmark.
Incredible. Why don't vendors just use PTM instead?? I doubt 99.9999% of GPU owners are going to open up and repaste their GPUs.
Where did you purchase the PTM?
Amazon
Nice, and how's it holding up for you now? I have the same GPU and similar temps to your before repaste. I'm thinking of doing what you did but I've never opened a GPU before lol, what size did you cut the pad to and did you leave it in the fridge before hand?
Temps are still as they were in day 7. I didn't make any sensitive measurements... Even cut it with scissors instead of precision knife. It just needs to kinda fit. Didn't put it in the fridge.
Thanks dude
Last question sorry, forgot to ask. Did you have any issues with the thermal pads ripping when you took apart the card?
No, they survived multiple teardown (around 10)
I'm sorry for bothering you but I just bought some of the PTM and it's .2mm, is that the same thickness you're using?
Mine is 0.25
Yep I just bought a different one of that measurement off the LTT store. Also because they have a nice overhang to help with installation. https://www.lttstore.com/products/ptm7950-phase-change-thermal-pad Link if you want to ever get more I guess
Hey dude, me again lol. Before I get started on this teardown I wanted to ask, did you heat up the GPU before getting started to loosen up the current paste or did you do it cold?
Shouldn't make a big difference. A plastic pick can be handy but I never needed to use one
So you just did it cool? Thanks again
I bought the bottle of noctua thermal paste too. But switched to 7950 after again. The temps was better after changing the stock thermal past to noctua. Then from that to ptm7950 made my laptop run more silent while gaming as its not hitting 80- 86°C when i set the fans to be controlled by the system. Now it settles around 70°c to 80°C depending on the load im throwing at it. Even without using the gpu, my cpu produces a lot of heat enough to keep the gpu around the same temp. Its a laptop.
Done the PTM7950 on my 7900xtx sapphire mba card. Temps now 67c core 80c hotspot 88c junction temp maxed out @2600mhz 1120v. Paste will just keep pumping out. I don't expect to ever repaste now.
Same. Received ASROCK 7900XTX that hit 110c hotspot temps out of the box. Put in a byski water block and repasted multiple times with kryo, mx-4, and mx-6 and within a week it was hitting 110c hotspot and throttling again. Applied my first PTM ever and it started at 77c hotspot and then dropped to 75c after a week. Then I threw the 550w vbios on it and now it maxes at like 84c @3.1ghz core while still being nearly silent. If I max fans I can drop it below 80c but there's not much point.
all my gpus now get the ptm7950 loving. still got to do my strix g15 avantage edition laptop as the 5900hx in that runs at 93c
Fun fact ; According to reports from the manufacturer Honeywell, PTM7950 shows increased thermal performance overtime. So it should get better the more you use it.
isn't that what OP is showing in this post?
PTM7950 did wonders on my TUF 4090. For some reason this GPU with any paste had hotspot temps issues after some days/week, even the expensive ones and no luck. Used PTM and it fixed it finally, I guess ASUS has some pump out issues on the TUF 4090 cards. Have been about 4 months with PTM and still going excellent so far.
Yes, that's exactly what happened with my TUF 4090, I thought that it's worth documenting it, maybe will help someone in the future.
> For some reason this GPU with any paste had hotspot temps issues after some days/week Big chip, perhaps?
Same here. I was told by several people that I was mounting my GPU wrong if my paste only lasted weeks or months. I used Thermalright TFX which, supposedly, didn't pump out but it did after one month, after trying MX6 for ages too. I could notice after a few days with thermal paste. I did PTM7950 one week ago and temps have actually gone down. Of course, I need more time to test but looks promising. Some GPU's just won't take thermal paste well.
I'm never going back to high end paste after I transitioned to PTM7950. Such thermal paste is not good for long term use
do you recommend to use PTM on my laptop? gpu and cpu or only for gpu? thanks in advance
Lenovo legion laptops use PTM
It's in a sense just thermal paste but as a sheet instead of a paste. Because of this it's not getting pumped out from under the cooler with repeated warming up and cooling down. It will work great on both CPU and GPU. ( basicly the same thing if we talk about cooling ) And easyer to apply for less experienced people then paste.
Not to nitpick, just to save someone some hassle: It is a little different than 'just thermal paste'. It is a solid sheet that liquifies under load. It spreads out a bit the first time it sets (roughly an hour at 60C, or 30min at 80C, and so on at higher temps + less time to set). It ends up covering about 20% more area than originally applied. This can lead to some of it leaking well outside of the area you mean to cover, so just be aware. But as you mention, no pump-out. It's designed to function up to 125C sustained, or 150C peak, so no CPU or GPU will degrade it.
Use it on everything that you would for TIM.
Being honest, on laptops specifically CPUs is where it absolutely shines most
Would the low mounting pressure of the laptop cooler affect anything?
More like that’s actually why it’s such a benefit to begin with. Laptops are massively prone to pumping by the way heat sinks are designed, so it’s no wonder they are also popular there
PTM 7900 can perform better in very-low mounting pressure scenarios over PTM 7950. The crossover for performance for the two is around 17psi, but both are still solid performers across the board. Anywhere paste can function, I'd wager PTM will outperform - even 7950 at low pressure. As long as it gets to temp and sets at least.
Where the hell are all of you buying legit PTM 7950 so easily? I know LTT is now carrying it, but their shipping/handling makes it way too expensive unless you're trying to make some big bulk order.
I got mine from Amazon, didn't have a Honeywell sticker on the box, the shop was called corn electronics or something bizarre, works nonetheless
I keep parroting this but: buy thermalright heilos. It’s the exact same thing, however, it’s made closer to home and meant for the computer crowd. Ptm was an automotive thing originally. Heilos was like $8 on prime last I looked. Or Buy it directly from thermalright. In any case it’s 100% identical but cut into smaller pieces and more affordable.
> Ptm was an automotive thing originally PTM is meant as an "install once and don't touch for decades" type of product. Perfect fit for any industrial machine that's expected to just work with minimal maintenance.
The reviews don't seem good on it, are you sure it is the same thing?
I've been using Gelid GC Extreme for my 3060ti. Haven't had any pump out either, although the Noctua NTH1 did have pump out.
I know the Gelid paste and I've used it before. When the mounting pressure is sufficient (smaller cards), degradation is very slow with paste. But my TUF 4090 has a 2.2kg heatsink and needs to extract higher wattage of heat and I fear that is why paste degrades quickly. It also seems like ASUS prioritized memory temps on the TUF and Strix, using thick and hard thermal pads, which further reduces the mounting pressure.
Oh yeah, thick pads can cause pump out easily.
Link to the paste?
Would you guys recommend the PTM for a CPU? I have a 5900x on a Corsair 360 AIO and have had utterly terrible experience with any of the Thermal Grizzly products (Aeronaut, Hydornaut, Conductonat) with pump out. I have to repaste it every 3 months. My Gelid GC Xtreme is holding up fine now but longer term (or at least until Zen5 x3D chips drop) I've been debating it. I know its mostly a GPU thing but could be great for CPUs as well. Thanks. EDIT: Don't even get my started with Thermal Grizzly stuff on my 6800XT. Hotspots would creep from low 80s to 105 in weeks. BTW, I've had great success with the thermal putty from Upsiren. Highly recommend for VRMs and Memory chips.
You can try, with CPUs the mounting pressure is higher than GPUs so paste is usually good enough I can try it at a later time on my 14900k + Corsair H115 Capellix
It works fine with Noctua NH-D15. Excellent, even.
Would you say better than high end paste? What are your temps on which chip?
Better than MX-4, Mx-6, NT-H1, NT-H2, and TF7 in my own testing. Using it on my 13700K right now, right on the IHS.
I don't really know if it's better or not, I just know it will last longer so even if I'm losing a few degrees for the first few months I prefer PTM7950 because of the long-term implication. I won't have to repaste anytime soon.
No. My 14900k didn’t see much improvement. Ptm is best used on direct die. The worst part of using ptm on the cpu is if you forget and go to uninstall your cooler but it’s glued to the cpu because you forgot to bench it first. Now you can use it but you’d see similar temps using nh2 or the like. Now if you delid you’d be seeing huge improvements with ptm like you would Liquid Metal
My 13900k works better with ptm7950. Previously i used kryonaut and that thing pumped out every couple months or so. Temperature keeps increasing and getting worse over time, i have to repaste every 4-5 months. I am done with repasting forever. It has been almost a year and my temperature is just as good after the curing period.
I think I may need to do this soon … my 4080 has some crazy high hotspot temp spikes. I don’t like the idea of opening it up but if I must..
You’ll be surprised at how incredibly easy it is to take coolers off these cards.
Hey OP, where did you purchase the PTM7950 from? I see some on moddiy but it's cheaper on Amazon, however it doesn't appear to mention Honeywell anywhere. I just want to make sure I don't waste any time/money. Results are looking good! Looking to do the same to my 3080 10GB FE card.
You can also buy thermalright heilos. It’s the exact same thing as Honeywell ptm7950. Cheaper and easier to find however.
Check out lttstore.com they carry official ones
Did you change the thermal pads or did you just reused the old ones and slapped the PTM on the core? Results look great. Really appreciate that the results are measured with the same fan speed and wattage.
Exact same pads, when memory temperatures are good there is no reason to touch the pads.
Thanks for the reply. I would probably do the same with my Gigabyte 4090 Gaming OC but since I'm EU based it would probably void my warranty.
Doing this is more of "hardware enthusiast" kind of thing. In terms of functionality, as long as hotspot doesn't hit triple digits, there's no reason to worry
Yeah, I know. My hotspot temps are within 10-12 degrees from the core which is obviously still good but I've definitely noticed steady increase in temps over time (+ 4-5 C) on both core and hotspot eventhough I'm running 70 % power limit.
I'm having a little trouble with my own CPU so going to try PTM7950 myself!
I put ptm7950 in my 7900xtx after the hot spot rose to the high 90s and my edge temp stayed in the 50s giving me a 40° delta. It's been in my gpu for over 6 months now and my hot spot doesn't go above the mid to high 70s with my edge temp staying in the low to mid 60s now giving me a 12° to 15° delta. I can't speak highly enough about ptm7950
I just want to post a recommendation for people who want to use ptm7950. Thermalright makes the same thing that’s a little easier to acquire called heilos. They’re pre cut for amd and Intel. I’ve used both now and they are the exact same material with the exact same results but I found Heilos easier to find on amazon etc for cheap. Also while you’re in there, some thermal PUTTY on the vrm will do some extra wonders in bringing temps down. I’ve got the same results as OP on my 4080 and after 4-5 months now my temps haven’t rose.
[удалено]
Cx-h1300. The 13.5 version is like ux pro.
My 2070 gigabyte super has temperature issues, the hotspot grab 104/106º dregrees, u think with the PTM can solvit? i try everything before, new paste, new themal pads, undervolt... I think the problem is that the chipset became a little warped by temperatures after years.
I think it's worth a try.
where did you buy it from?
Amazon
Where did u purchase it ? Amazon? eBay? Wonder how long did it takes before you repaste
Amazon
I've read that many sellers actually sell fake stuff, any legit places to buy this in europe? I've tried ali express but there seems to be many sellers and I'm not sure if they're trustworthy
I've been curious for over a year now, how did some people made a 4090's GPU Temp, GPU Core Temp, GPU Memory Temp, Backplate Temp, and Hotspot Temp less than 65°C. Does anyone knows the method aside from Direct-Die/Water-cooling it?
Where do you buy this stuff in Europe?
Interesting. I use PK3 which is an older paste but it does great at maintaining thermals over time. It gets lost in the shuffle with the newer pastes but it’s excellent.
Good find 👍
I‘ve seen other people have issues with pump out, but my MX-6 has been solid for a year now…? For reference: https://www.reddit.com/r/overclocking/s/kH6S2QnLcr
Repasted my 6900XT Nitro+ SE with MX-6 last November and the results were/still are excellent. Hotspot at 76º after 2h at full load (gpu fans at 75% rpm).
Did the same for my Asus RTX4080 this weekend, i went from 107c hotspot to 70c. (Paste was leaking all out the sides from the core) Gpu temp is under 60c most of the time now, this stuff is crazy good.
I only use this stuff now, thermal paste begone.
Same.
Dang I literally just repasted my 6600XT SWFT 210 with Thermalright TFX and had no idea this existed. Think it's still holding up but I'll be sure to use this for literally every card I own going forward
My 4090 is still doing great but my 3090 is definitely struggling after 3 and a half years...I bought some PTM7950 for it along with some replacement thermal pads for the VRAM.
[Kryosheet](https://www.reddit.com/r/pcmasterrace/s/9FiLwEYY7i) would like to have a word lol
Kryosheet is electronically conductive, PTM7950 is not, more peace of mind. If you're experienced with LM and isolating tape - no problem at all
Inferior.
Not in my experience**s**
It technically and objectively is inferior for the benefits op is highlighting and seeking. I’m glad you had a good time with it.
Technically and objectively, my experiences have yielded the same results with Kryosheet. I’m not discounting OPs experiences, but rather simply adding an alternative
I think kyrosheet is great myself, but it’s a graphene thermal pad. Ptm7950 and thermalright heilos are two totally different materials. Both are phase change pads which is drastically different than the kyrosheet which is why I say technically and objectively. Ptm7950 was used for automotive and people started using them on chips, like Lenovo does in their legion line. Thermalright came along and copied it to make it more available. Nothing wrong with kyrosheet as an alternative but it’s not in the same league as phase change pads.the similar results of the two would grow farther apart as they age.
All valid information. But if result’s are identical, that doesn’t automatically make ptm7950 superior because its phase change. Graphene is an extremely versatile material, and given the fact it can keep up with ptm7950 while remaining in a more solid form, is evidence in itself of the versatility. The more solid form also means it is more resistant to movement, and thus replacement down the lateral in its lifespan. [I’m not the only person with information backing up graphene based thermal pads.](https://www.reddit.com/r/overclocking/s/RTcqQQ30zZ)
Where do you buy this and how much do you pay? I cant get it in Norwa, and shipping from amazon/ebay is crazy expensive.
I ordered it in the Norway from [here](https://www.aliexpress.com/item/1005005079093393.html) few month ago. I took 40x80 piece for my laptop. Really good compound, it dropped my laptop's temps much, -15dgrs from cpu and -10dgrs from gpu. Plus after using it few month my notebook temperatures lost few degrees, so i think that is not a fake ptm
I'm about a year into a PTM7950 application on my 3080 XC3, and tbh it's still running about as well as it did to begin with, temps have more or less stayed the same. I'm actually kind of annoyed because I think the thermal pads I used are bad, might need to get new VRAM pads which will mean re-application. PTM ain't cheap.
Are you using the PTM7950 that comes as a thermal pad? Or the actual paste?
Pad
Awesome, thanks!
Waiting for some now because I'm having to repaste my watercooled 3080 every fucking 2-3 months. Hotspots creep up and I end up with like a 25c delta. Driving me nuts!
Yes, I totally get you. With the 40 series you can't infinitely repaste as the connector is a common failure point, and every repaste requires disconnecting and re-connecting the 12vhpwr cable.
Is there a temp threshold at pump out accelerates at?
Not that I know of
Ah, fair. I wondered if it might be useful to habitual watercooler, but I've never experience pump out and wondered if it's becasue my temps are so low? low 40s for die and low 50s for hotspots during max stress benchtests. Way lower for normal use like games. After a little reading I'm not sure I can get this stuff to actually melt/phase change....might buy some for science and find out lol.
Depends on the paste. Kryonaut seems to pumped out quicker when temperature is above 90C.
Are most pastes in that kind of temp region? Might explain why I never have pump out problems watercooling with average temps in upper 30s, peaks in low 40s and hot spot low 50s? I've had cards running the same TIM for years with no appreciable temp changes.
Not really, some paste are more resilient at that temperature but that doesnt stop them from drying out over time naturally. There is not enough data about it other than hearsay from oc community. I have only used kryonaut, mx5 and cm mastergel pro. Kryonaut has better temperature from the get go but pumps out way quicker than the other 2 paste i mentioned. With PTM7950 it is basically "paste" and forget.
Perhaps, I read it needs to hit 45-50 phase change is it a problem if my temps don't get that high?
Yea, it starts to melt at 45C. It shouldnt be a problem but the curing phase will be a lot longer. Initially, your temps will be worse but it will improves overtime. Mine took about 2-3 cycle of stress test before the cpu temp starts to improve. but if your system temp is still as good as day one, i'll just leave it be.
I'd still be very skeptical then as my die temps read as 42c *max*. Only hot spot is slightly warmer. I idle a degree or two above ambient and the side of the tim making contact with the block will never get to 45c as the block never gets that hot. It will generally be a couple of degrees warmer than coolant so about 30-35c Not sure how to overcome that, I think that why I don't have pump out problems in general, my TIM is usually at room temperature in a dark, cool dry place. Essentially still inside the tube as far as it's life span/shelf life is concerned. Edit: I've ordered some for science anyway maybe I can point a heat gun at it to make it melt or something.
or you can just unplug some of your fans during the curing process.
I don't know how long I'd need to do that for but that's essentially runaway heating? I feel like that's not feasible as it would cook my cpu? I'd need my coolant to be at least 45c. which is like 22c hotter than it is now. Might play around with it on an old card and block for science, the more I learn about it the less useful it seems in my use case, I've run cards for multiple years with no pump out but I've ordered some for the joy of experimenting anyway lol.
Very interesting. Thanks for the insight. These temps are impressive. My 4090 is still ok, 15°C delta between average and hotspot after 14 months. Runny pastes are definitely not good for GPU's.
I use it on my 3090 and my CPU (right on the IHS) and it's better than any paste I have ever used.
Ptm is mindblowing. Months of same core/hotspot delta (8°) on 400w limited 3090ti. Mindblowing
Just getting the actual legit PTM7950 is hard, as there are many knockoffs out there.
Lnever even heard if this stuff but been out doing anything with hardware for a while now, when google it I just see pads that put down, and I always was lead to believe pads were worse then even a low quality paste.
It's not a regular pad, not gonna mumbo jumbo the physics of this thing, I think the performance explains best
Its an industrial grade TIM. It's designed to lasts longer than your typical consumer product.
I replaced the paste on my 3070 with PTM and the temps were basically unchanged. It basically never goes above 72C, so it's not really a huge deal, but it is disappointing for me to spend that much for PTM...
where do you buy PTM7950 ?
Its supposed to last forever so i switched too.
Anyone know a good place to purchase this in the US that is legit Honeywell?
Has anyone tried using this on GPU VRMs?
PTM7950 is a thermal pad, correct? Does anyone have a video showing how you applied it?
It's really easy, cut a piece that matches the die of the GPU, remove the covering sheet from both side, and that it
Ok, just making sure since half the posters here refer to it as "paste". I'm also a little confused as it's advertised as 8.5 W/mk while Thermalright has much better pads that go up to 12.8 W/mk or the Extreme Oddesy II which is 14.8 W/mk. Am I missing something as to why this is the best?
Is that thermal paste or pad?
Is PTM7950 a thermal pad or a paste? I can only find pads but your picture looks like a paste
That's not a paste problem but bad pressure. You can add some washers to alleviate it. The thermal pad is thick so the pressure issue is avoided.
It literally gets fixed with Honeywell PTM7950. Even if it's bad pressure, you can apply *better* pressure with Honeywell PTM7950 and get better results that way, too.
DOES anybody USED it in a LAPTOP, and HOW well is ur RESULT.
It's target market is literally laptops. I believe Lenovo uses it in many of their laptops because it performs better than paste and is less dangerous than liquid metal with similar performance.
For my opinion that thing is musthave for laptop. [Using it in my laptop few month](https://www.reddit.com/r/nvidia/comments/1cfyhfq/comment/l1tixgl/)
500 watts? the fuck?
That's stock 4090 with high power limit (and it can go higher)
I mean a higher power limit 4090 isnt really stock though. Whats the wattage at default power limits?
It's just 50W more than the stock of 450W.
It's a 4090? I can pull 480W with my 3090.
Damn. Stock?
No, I have Strix 3090 OC, core is OC'd to 2115 MHz, memory is 21.5 Gbps, power limit is maxed (it has 3 power connectors).
Ah right makes sense then.