DDR5 RAM timing

[ilyKimchi]

Hello, I have a set of Crossair DDR5 6000MHZ rams 32GB and I wanted to optimize my timing's

my components are

7800xt / 7800x3d / m.2 2TB 980 / MSI X670P - WIFI / 360mm AIO by deepcool

I am new to this I've met set changes to the bios from disabling things and PBO settings and Dram voltages but mainly I want to focus on the timings which im having difficulties understanding to begin with, I would also appreciate any advices and assistance outside of the timings!

 

[Woomack]

If you shared more details about the RAM, it would be much easier to say something. On the other hand, if you use X3D CPU then it doesn't matter much as overclocking RAM barely helps on these CPUs.

 

[ilyKimchi]

If you shared more details about the RAM, it would be much easier to say something. On the other hand, if you use X3D CPU then it doesn't matter much as overclocking RAM barely helps on these CPUs.

i am using am5 hynix 6000mhz crossair!

 

[ilyKimchi]

if anything needed to be specified id gladly do so i just wanna know how to fix my timings and further more bios optimization.

 

[JLK03F150]

Download CPUz if you don't already have it. Open two instances of it showing the Memory & SPD tabs. Screen-shot it & post. That will help other to help you. Here is an example...



edit: I think spelling autocorrect it playing with you. It is Corsair, not Crossair.

 

[ilyKimchi]

There you go !

 

[Woomack]

1. Check how low you can go with CL without losing stability
2. Check tRCD and tRP at 38/39 or anything lower than 44
3. Check if you can make it run at 6200 or 6400 at the same settings as in the XMP profile
4. If the answer to 3 was yes, then check points 1-2 at 6200 or 6400

To be honest, you can't overclock it much to see any significant performance gain. You can lower tRFC (typically around 400-500) or tREFI (higher is better) in additional timings, but everything will give you 0-1% better performance.

 

[ilyKimchi]

1. Check how low you can go with CL without losing stability
2. Check tRCD and tRP at 38/39 or anything lower than 44
3. Check if you can make it run at 6200 or 6400 at the same settings as in the XMP profile
4. If the answer to 3 was yes, then check points 1-2 at 6200 or 6400

To be honest, you can't overclock it much to see any significant performance gain. You can lower tRFC (typically around 400-500) or tREFI (higher is better) in additional timings, but everything will give you 0-1% better performance.

Current timings are

tCL - 30trcd - 40trp - 40tras - 30trc - 68twr - 48(TREFI) refresh - 65535trfc1 - 500TRFC2- 400TRFCsb- 300trtp - 12trrdl - 8tRRDs - 8tfaw - 32twtrl - 16twtrs - 6trdrdscl - 4trdrdsc - 1trdrdsd - autotrdrddd - autotwrwrscl - 4twrwrsc - 1twrwrsd - autotwrwrdd - autotwrrd - 2trdwr - 16

how would i benchmark / stress test? (currently on Y-cruncher) VT3 stress testing..

 

[Woomack]

So you covered the timings well. I'm surprised this kit can run like that.
Y-cruncher is fine. Can use memtest86, HCI memtest, Prime95 blend, AIDA64 stability test and many more. Some tests aren't free. The best is to use 2-3 tests as each one has a different test pattern and one test may pass, but another may crash at the same settings. I noticed that even if some stability tests pass, then some games still randomly crash. In short, there is no one perfect stability test and it's good to run more of them to be sure.

 

[ilyKimchi]

So you covered the timings well. I'm surprised this kit can run like that.
Y-cruncher is fine. Can use memtest86, HCI memtest, Prime95 blend, AIDA64 stability test and many more. Some tests aren't free. The best is to use 2-3 tests as each one has a different test pattern and one test may pass, but another may crash at the same settings. I noticed that even if some stability tests pass, then some games still randomly crash. In short, there is no one perfect stability test and it's good to run more of them to be sure.

I kinda left my pc running while i was at the gym kinda over kill but it is fine so far i will keep gaming on it until further notice if anything pops up

Post magically merged: Aug 27, 2024

I kinda left my pc running while i was at the gym kinda over kill but it is fine so far i will keep gaming on it until further notice if anything pops up

So you covered the timings well. I'm surprised this kit can run like that.
Y-cruncher is fine. Can use memtest86, HCI memtest, Prime95 blend, AIDA64 stability test and many more. Some tests aren't free. The best is to use 2-3 tests as each one has a different test pattern and one test may pass, but another may crash at the same settings. I noticed that even if some stability tests pass, then some games still randomly crash. In short, there is no one perfect stability test and it's good to run more of them to be sure.

In addition ill check on other stress tests i recognize that i've done all of these before just wanting to double check.

Fclk running at 2200 is the most i couldve achieved and with the curve optimizer i noticed highest i can go is -20 and i kept crashing at -30

 

[Woomack]

FCLK usually ends at 2166-2200. I think my 7800X3D was working at 2200 before I gave it to my brother.
Everything you posted seems fine or is expected for the 7800X3D CPUs.
Regarding memory, you can't make much more because these CPUs already perform well and because of large and fast cache, all the RAM delays are covered. I was trying various settings up to 8000, and there was barely any difference. The best is still something like you already set. Maybe dual-rank RAM is a bit faster, but it's not so much better to be worth paying twice as much for RAM.