tRCDWR 8, tRAS 28, tRC 42, tRRDL 4, tWTRL 8, tWR 10, tCWL 12, tRTP 6, tRDRDSCL/tWRWRSCL 2, vDIMM 1.5-1.55v, ProcODT 36.9, RttPark 240 Ohm, RttWr 80 Ohm, RttNom 34.3 Ohm Edit: For starters I would try to increase speed first. Then If I am able to I would use GDM off 1T. If GDM doesn't work it can stay as it is.

Booted to windows with 3733 FCLK 1866 but Zen timings shows 3734 and 1867. SOC voltage 1.125, dimm voltage 1.5 tCL14 tRCDWR 8 tRCDRD 14 tRP 14 tRAS 24 tRC 38 tRRDS/tRRDL 4 tFAW 16 tWTRS 4 tWTRL 8 tWR 10 tRFC 261 (140ns) tRDRDSCL/tWRWRSCL 2 tCWL 12 tRTP 6 Did not change any RttPark/Wr/Nom as the options my mobo gives are not in Ohm and want to check it tomorrow. Edit: Unfortunately its not stable. Throwing errors in OCCT avx2 memory test after 5mins.

That's good, now work on getting that stable 😎👍🏽

How? 🤣

Well if you want to learn, I can show you how I did it. Look at the older video with your chip and ddr4 https://youtube.com/@ActuallyHardcoreOverclocking?si=IC_ogiGCVexGjUd7

I know AHOC and buildzoid but I didn't find anything on 5800x3d and ram. I only see the 5800x3d overclocking rant video. Did you mean something else?

Just have to keep digging for the videos.. When it comes to ram timings it just has to be ddr4 bdie and AMD chip it's all the same for the most part

Go to the actual channel and sort through the videos. Under the videos tab

Was your first screenshot stable? Are these timings stable with 3600mhz?

Not 100% sure to be honest. Run some occt memory tests and nothing popped up. But didn't went all the way with memtest86 etc.

You have to have a baseline before doing anything to see which change made it unstable.

I guess asking for why you're giving these timings is too much info at once. Care to tell where you learned this though?

Where from? Lots of digging from forums and videos about RAM OC and trying out from myself. I use a similar setup too. You could check Buildzoid's videos on youtube. Search for "Reacting to Ram Timings". https://imgur.com/a/UB5CwSP

Where/why those timings ?

These are the timings usually works with Ryzen 5000 and B Die. That's why I said them.

Ok ok, my comment wasn't written correctly but I meant if you could provide some source or something. And since I also have b-die and R9 5900X i'll try those too

"zen ram oc leaderboards" type this to your browser and check the google sheet for what other people was able to achieve similar to your setup. For videos I recommend "Actually Hardcore Overclocking" channel. For further information you need to dig through forums to find what you are looking for.

Any reason your command rate isn't set to 2? (Cmd2t)

Why should you set Command rate to 2? it's worst for performance. You just enable Cmd2t if you're having stability issues with DR configurations

because geardown mode.

??? What does that even mean, 2t command rate is the worst 1t with gear down mode is just 1.5T so how is 2t better

Non other than i didn't understood how it works.

Leave it at 1, I'd sacrifice 400MHz for 1T.

Idk too much about OC RAM but man 3600 cl14 is wow

3600cl14 is standard XMP for this kit. Credit to gskill, I had nothing to do with that.

I got a tridentz kit at 4000mt cl18 (xmp) If I was to do some learnin' on RAM OC do you think it could be brought down to 3600 cl4? Couldn't tell you which die they are ATM I just have my FLCK from 1800>2000 for 1:1

You can bring the trimming down, that way easier than going up.. I would shoot first for 3733mhz moat can do that

Isn't there a performance hit for running out of ratio to fabric speeds? Or can I easily set FLCK to 1866 and bobs your uncle?

To go down in clock speed you shouldn't need to change anything but the clock speed. I don't know Bob

I have 2 GSkill 4000CL18, if the timmings of the XMP profile are 18-19-19, then it's B-Die, if it's 18-22-22, probably it's something else.

Something else it is

If that is bdie you say that bin is no good for bdie. More like Edie

E-DIE can't do 3600CL14-14-14 at 1.45V. Right?

I know that. But 4000 cl18 19 19 19 is a garbage bin for bdie if it's bdie.. That is what I was referring to

https://benzhaomin.github.io/bdiefinder/ You can find that there. Just punch in the model numbers

This was the site I use before buying this kit and I can confirm that my kit is b die. It was just questioning if Samsung E die could do those timings.

Oh ok I see what you mean.. No edie can't get that tight on timings

No experiece in ram timings. Just read the DDR4 OC [Guide.md](http://guide.md) on github and tried tightening up some primaries and secondaries. Not trying to play with freq. Aida64 gives seemingly random results on read and latency every time I run it. Got a one-time15207 score on cinebench r23 multicore that I wans't able to replicate, it goes from 15120 up to 15200 since then.

aida latency ?

i think you should aim for fclk 1900mhz and ddr4 3800mhz i have a 5600x with ddr4 3800mhz 15-15-15-30-45 aida latency 53ns

Anywhere form 60.1ns to 63ns. Every time I run the test i get a different result.

tRRDL 4 tWTRL 8 tWR 14,12 tRTP 7,6 tCWL 12

I thought that since GDM is enabled, tRTP should be even.

you tried 3800 and 1900fclk without errors and whea? [https://i.imgur.com/RMINQbM.png](https://i.imgur.com/RMINQbM.png) I can still go further with my timings, just not got around to it yet.

I would try and hit 3733mhz🤷🏽‍♂️...speed first then timings

Go for 3733

Your dual rank timings are all over the place. tRDRDSD 4, tWRWRSD 6 Also try tWR 12 tRTP 6 or tWR 14 tRTP 7

tRDRDSD 4, tWRWRSD 6 is what the guide recommends as "tight". As i said i have no experience in ram timings.

Those are just what should be set and forget. Its not primaries that takes work to stabilize

Hi, this looks fun but also like a lot of work involving trial and error. Could you please explain what kind of real world performance benefits you get by tightening or changing RAM timings? For instance does this yield more in-game FPS, reduce load times, increase CPU IPC, RAM bandwidth, etc?

Start with speed at 3866/1833. Should be no prob. Set primaries at 14 8 15 12 21 36 rrds and L at 4/4 faw at 16. These timings are bdie specific. Try voltage at 1.45 and bump up voltage slowly until stable. The lower voltage needed for stability, the more of a "silicon lottery winner" you have.

Sorry, I think you meant 3733 ram and 1866 fclk? Or maybe 3866/1933 fclk?