9800x3d, 6000mhz 32 cl ram latency was 85ns in 1:2 mode, and in 1:1 mode its 81ns, shouldnt it be MUCH lower?

randomgamer414 · Nov 27, 2024

AdamK47 said:
I have the exact same memory.
View attachment 2684130
You can try some of the settings I have.

So far I’ve disabled the things imprezzion said above and changed my ram timings to almost the same as you’re but not quite agressive for example I’m on 30 instead of 32, , ram benchmark latency is down from 85 to 70 and massive cyberpunk 1080p benchmark improvements . However all games have a weird audio and graphical hitch/stutter about once a minute. Could it be because I have not raised my voltages? Wonder what I should lower or what would cause that ?

AdamK47 · Nov 28, 2024

randomgamer414 said:
So far I’ve disabled the things imprezzion said above and changed my ram timings to almost the same as you’re but not quite agressive for example I’m on 30 instead of 32, , ram benchmark latency is down from 85 to 70 and massive cyberpunk 1080p benchmark improvements . However all games have a weird audio and graphical hitch/stutter about once a minute. Could it be because I have not raised my voltages? Wonder what I should lower or what would cause that ?

The memory tuning shouldn't cause that. You can try reverting all settings and see if the problem still exists. I'm thinking you have some background process causing it. Check that out first.

Imprezzion · Nov 28, 2024

Audio stutter can also be caused by unstable FCLK / wrong vSOC voltage. Both too high or too low for the given FCLK. High FCLK 2133+ wants low vSOC.

randomgamer414 · Nov 29, 2024

AdamK47 said:
The memory tuning shouldn't cause that. You can try reverting all settings and see if the problem still exists. I'm thinking you have some background process causing it. Check that out first.

I reverted to stock ram timings and it went away instantly. It was doing it in every game and now it’s gone . Not sure how to proceed . Maybe it needed higher voltage to remain stable with those timings I’m not sure

AdamK47 · Nov 29, 2024

randomgamer414 said:
I reverted to stock ram timings and it went away instantly. It was doing it in every game and now it’s gone . Not sure how to proceed . Maybe it needed higher voltage to remain stable with those timings I’m not sure

Like mentioned before, a high FCLK can cause that since it is error correcting and not outright crashing.

If you know it's not FCLK you can try reenabling a subset of timings until you narrow down the bad ones.

randomgamer414 · Nov 29, 2024

AdamK47 said:
Like mentioned before, a high FCLK can cause that since it is error correcting and not outright crashing.

If you know it's not FCLK you can try reenabling a subset of timings until you narrow down the bad ones.

What’s crazy is that stock ram I got 280fps cyberpunk benchmark and after I changed the settings like you said I got 319. I then set the ram timings back to stock and now get 315. So it seems all the gains were actually from disabling GDM,SMEE,TSME,SVM,data scramble .
Does that sound right? I don’t know how it’s possible that just disabling that stuff made the benchmark that much better, but I have the screenshots to prove that’s all I did

AdamK47 · Nov 29, 2024

Doesn't really sound right to me. In situations like this I go back and revert things I've changed in order to narrow it down. If you're curious about it that is.

Redwoodz · Nov 30, 2024

randomgamer414 said:
What’s crazy is that stock ram I got 280fps cyberpunk benchmark and after I changed the settings like you said I got 319. I then set the ram timings back to stock and now get 315. So it seems all the gains were actually from disabling GDM,SMEE,TSME,SVM,data scramble .
Does that sound right? I don’t know how it’s possible that just disabling that stuff made the benchmark that much better, but I have the screenshots to prove that’s all I did

Could be the motherboard "learned" better secondary timings. Make sure you are comparing the whole RAM timing.

tunste · Jan 4, 2025

I would recommend tuning the DDR 5 ram sub-timings and using PBO to overclock your 9800x3d. I would also agree with getting DDR 5 Expo ram that is on the QVL comparability list for your AM5 motherboard.

I was having ram tuning problems until I got EXPO Teamgroup 32GB D5 6000 C30 BLK RGB compatible with my MSI X870 Tomahawk. The ram was only $95 @ Micro Center. I am running my ram @ 6400 Mhz with tight sub-timings.

I now getting 67.6ms ram latency, down from initial 75ms un-tuned sub-timings.

I moved from a tuned Intel 14900K system to AM5 9800x3d, I could not be happier.

I recommend Youtube for advice on overclocking and ram tuning.
I recommend watching Buildzoid on Youtube for overclocking and ram tuning advice.

System: AMD Ryzen 7 9800X3D – MSI X870 Tomahawk Gaming Wifi 7- 32 GB Teamgroup D5 6000 C30 BLK RGB - ASUS TUF Gaming GeForce RTX® 4080 Graphics Card -Samsung 980 2TB NVME SSD - SUPERFLOW SF1300F LD7 80+G FM ATX3 PSU - 7000D AIRFLOW Full-Tower ATX PC Case (Black); CPU cooled on custom waterloop on 420 Corsaire radiator.

iLIKE2STAYU · Feb 16, 2025

randomgamer414 said:
What Shiism I set it at? Default tras is 102. Guy above has his at 32. How is that even possible

Tras can actually do lower then 30 if you’re on an asus board. lowest I’ve seen is 28

iLIKE2STAYU · Feb 16, 2025

AdamK47 said:
Lowering tRFC, increasing tREFI, and turning off GDM will have a big impact on latency. If your RAM is truly exactly the same as mine (Hynix A die), then tRFC can go as low as ~380ish at 6000. I set mine at 400 to be safe. tREFI can safely be maxed out. If you aren't afraid of voltage, 1.5V VDD can get you cl28. I've been running 1.5V for about a year and a half with mine.

CL28 only needs 1.43vdd…

Bazzucutz · Mar 5, 2025

Imprezzion said:
Few things. 9xxxX3D has inherently higher latency than 7xxxX3D by about 5-8ns.
If that BIOS is 1.2.0.2a or b AGESA it will add another 5-6ns over 1.2.0.2.
Further, with PDM/MCR enabled it will add even more.
Then we have the stock timings. That high tRFC and pretty loose primary timings aren't exactly helping either.
Hypervisor present so SVM is enabled so even more added latency. Probably also didn't turn off TSME, SMEE, Data Scramble, iGPU and such to help latency.

I don't think 81ns is that unreasonable for stock timings with 2000 FCLK.

Is the CPU stock or at least with PBO? Core clocks help with latency too.

For reference I get about 63ns on AGESA 1.2.0.2a and 59ns on 1.2.0.2 with highly tuned 6400C26 with 2133 FCLK and 5650 all core CPU with PBO and eCLK. That's as good as it's going to get.

Will these not just run at least 6400 with 2133 FCLK with stock xmp timings?

Você poderia explicar em detalhes o que pdm e mcr seriam? Já desabilitei todos os outros.

Bazzucutz · Mar 6, 2025

Imprezzion said:
Few things. 9xxxX3D has inherently higher latency than 7xxxX3D by about 5-8ns.
If that BIOS is 1.2.0.2a or b AGESA it will add another 5-6ns over 1.2.0.2.
Further, with PDM/MCR enabled it will add even more.
Then we have the stock timings. That high tRFC and pretty loose primary timings aren't exactly helping either.
Hypervisor present so SVM is enabled so even more added latency. Probably also didn't turn off TSME, SMEE, Data Scramble, iGPU and such to help latency.

I don't think 81ns is that unreasonable for stock timings with 2000 FCLK.

Is the CPU stock or at least with PBO? Core clocks help with latency too.

For reference I get about 63ns on AGESA 1.2.0.2a and 59ns on 1.2.0.2 with highly tuned 6400C26 with 2133 FCLK and 5650 all core CPU with PBO and eCLK. That's as good as it's going to get.

Will these not just run at least 6400 with 2133 FCLK with stock xmp timings?

Could you explain in detail what pdm and mcr would be? I have already disabled all the others.

9800x3d, 6000mhz 32 cl ram latency was 85ns in 1:2 mode, and in 1:1 mode its 81ns, shouldnt it be MUCH lower?

randomgamer414

AdamK47

Imprezzion

randomgamer414

AdamK47

randomgamer414

AdamK47

Redwoodz

tunste

Attachments

iLIKE2STAYU

iLIKE2STAYU

Bazzucutz

Bazzucutz

Top Contributors this Month

Recommended Communities