Share your AIDA 64 cache and memory benchmark here

[lawood]

Managed to tighten tRCDRD and tRP and some some subtimmings.
Stable on TM5, need further testing.
Sub 56 now, barely

A shame I can't boot with 1900 fclk, I'd rather have 3800.

 

[The King]

Managed to tighten tRCDRD and tRP and some some subtimmings.
Stable on TM5, need further testing.
Sub 56 now, barely


A shame I can't boot with 1900 fclk, I'd rather have 3800.

Has I stated earlier in this thread VSOC dude!, it will get the higher fclk to boot, Just check what is safe for your CPU.
With my B450 board i went has high has 1966 fclk single channel; and 3677 dual channel with Dual rank dimms on a 1700X, without my VSOC at 1.2V my CPU will never boot that high.

1.2V SOC is safe for my CPU you should try 1.15V and see if 3800 boots then.

 

[lawood]

I can't boot with 1900 fclk no matter the settings.
Searched a bit and it seems to be called a " fckl hole". I tried everything. I can boot at 1933 but not 1900.

 

[Det0x]

My new shining toy

 

[The King]

I can't boot with 1900 fclk no matter the settings.
Searched a bit and it seems to be called a " fckl hole". I tried everything. I can boot at 1933 but not 1900.

Its probably a lost cause then.

But I notice with B-die just changing something like tWR from 12 to 10 can get x Frequency to boot even changing SD DD from 5s and 7s to 4s and 6s it is so senstive. Even SCL 2 vs 3 or 4 can cause boot failure.

It can be really fuzzy one would have to go through a list of several different configs with B-die to rule out what will boot and not.

Then also there is voltage. I had x Frequncy not boot at 1.45V but dropping to 1.44V then it boots.

 

[lawood]

@The King

After much tinkering I found a fix, simply enabling LN2 mode fixed the issue. I'm so confused.
No other settings changed, I just double tested it and If I disable LN2 I don't get boot yet again.
I read disabling spread spectrum also helps but I had that disabled already.

Well, this is much better, I needed to bump the ccd and iod to crazy values to get rid of whea's on linkpack.
Hopefully now I can bring the voltage down and tighten timmings a bit.

 

[Dia01]

I've gotten to 3800 1:1 (16,16,16,32 1T) with GDM Enabled. ProcODT 43.6 & ClkDrvStr 40 which seems to help.

Latency is still a little high. Any recommendations with the settings?

 

[dgianstefani]

Yeah do 3800/14

 

[Dia01]

Yeah do 3800/14

I'll have to keep working on that one, CL14 is proving a little difficult atm

 

[The King]

I'll have to keep working on that one, CL14 is proving a little difficult atm

RTP should be 6. Have your tried 14-16-16 or 14-15-15 Primary ?

Flat 14s may not be possible on all B-Dies at 3800.

 

[tabascosauz]

I've gotten to 3800 1:1 (16,16,16,32 1T) with GDM Enabled. ProcODT 43.6 & ClkDrvStr 40 which seems to help.

Latency is still a little high. Any recommendations with the settings?

I have to ask - any reason why you run that monitoring program on the right? AIDA latency is very sensitive to background processes - you can see gains just from getting rid of HWinfo during the run.

Still think the big gap in latency (~1-2ns) is either because of your board or AGESA, and too much to be caused by background stuff.

 

[oobymach]

I've gotten to 3800 1:1 (16,16,16,32 1T) with GDM Enabled. ProcODT 43.6 & ClkDrvStr 40 which seems to help.

Latency is still a little high. Any recommendations with the settings?

View attachment 245028

cl14 is pushing it for a 32gb kit, I would try for 15 and see how it goes.

What monitoring software are you running on the right?

 

[Ibizadr]

I'll have to keep working on that one, CL14 is proving a little difficult atm

Try to get rid of GDM, go to 2T

 

[dgianstefani]

cl14 is pushing it for a 32gb kit, I would try for 15 and see how it goes.

What monitoring software are you running on the right?

Cl14 is fine, if it's B die just use more voltage.

 

[Dia01]

cl14 is pushing it for a 32gb kit, I would try for 15 and see how it goes.

What monitoring software are you running on the right?

Just a custom rainmeter skin

 

[zx128k]

4x8GB DDR4 4000

 

[The King]

Just a custom rainmeter skin

That will definitely affect Latency in AIDA64 even having an active internet connect will affect Latency as well.
If you disable all 3rd party apps and do another run you should see an improvement in Latency. Any program that is using CPU cycles in task-manager will affect latency.

It may look cool but if its affecting performance I would disable it when running benchmarks or gaming.

 

[Dia01]

That will definitely affect Latency in AIDA64 even having an active internet connect will affect Latency as well.
If you disable all 3rd party apps and do another run you should see an improvement in Latency. Any program that is using CPU cycles in task-manager will affect latency.

It may look cool but if its affecting performance I would disable it when running benchmarks or gaming.

Yeah I know, I've run a few in safe mode and also closed running programs before to bench, I'm aware and I appreciate your comments of course.

 

[tabascosauz]

Yeah I know, I've run a few in safe mode and also closed running programs before to bench, I'm aware and I appreciate your comments of course.

You on 21H2 Win 11? I've been running some AIDA and noticing that latency is consistently 2ns worse on both 5900X and 5700G, for this Win 11 version. Previously on 21H1 the difference was negligible compared to 10. Bandwidth and cache results are good, it's just DRAM latency.

If you account for the 2ns difference, then your 3600CL14 is in roughly the right place for a 5950X.

I'm still not sure what is going on, whether it's just Windows, bad AGESA, or if there's a specific AGESA that has to be paired with 21H2.

 

[Dia01]

You on 21H2 Win 11? I've been running some AIDA and noticing that latency is consistently 2ns worse on both 5900X and 5700G, for this Win 11 version. Previously on 21H1 the difference was negligible compared to 10. Bandwidth and cache results are good, it's just DRAM latency.

If you account for the 2ns difference, then your 3600CL14 is in roughly the right place for a 5950X.

I'm still not sure what is going on, whether it's just Windows, bad AGESA, or if there's a specific AGESA that has to be paired with 21H2.

Yeah I'm on the latest build W11, thinking it's a combination of both really.

 

[zx128k]

I've gotten to 3800 1:1 (16,16,16,32 1T) with GDM Enabled. ProcODT 43.6 & ClkDrvStr 40 which seems to help.

Latency is still a little high. Any recommendations with the settings?

The rule I was given for tFAW was tRRDS * 4. If your tRRDS is 4 then tFAW is 16 not 26. GDM to disabled if you can. Also try to get CL at 15 if possible, will help with latency.
View attachment RAM-Latency-Table.webp
As you can see 3800 CL16 is not too good at 8.28ns. CL15 would be approx. 7.76ns. Latency is better at 3733 CL15 8.04ns. Even better at 3600 CL14 7.78ns. I am 4000 CL15 which is 7.50ns. tRFC was another good for latency when I was overclocking the ram on my Ryzen 3800x.

tRDRDSCL tWRWRSCL = 3 and not 4 might work. 4 is safe and 3 is tight and 2 is extreme.
tRFC (ns) on b-die can go as low as 120 - 180ns but I working on that atm with my RAM. This scales with voltage on b-die, same with tCL. You are 136.8421ns.
tCWL = tCL is safe, tCL-1 is tight but tCL-2 is extreme. You are tCL=16 and tCWL = tCL-2 which is extreme.
tWTRS tWTRL = 4,10 which is tight and so fine as is. 4,8 is extreme.
tRTP = 10 which is tight. 12 is safe and extreme is 8.

The latency for these settings is 40.9ns in Aida64. Feedback is welcome.

 

[Dia01]

That will definitely affect Latency in AIDA64 even having an active internet connect will affect Latency as well.
If you disable all 3rd party apps and do another run you should see an improvement in Latency. Any program that is using CPU cycles in task-manager will affect latency.

It may look cool but if its affecting performance I would disable it when running benchmarks or gaming.

A few tests below at 3800. 4ns lower with 3rd party apps disabled and also safe mode results.

The rule I was given for tFAW was tRRDS * 4. If your tRRDS is 4 then tFAW is 16 not 26. GDM to disabled if you can. Also try to get CL at 15 if possible, will help with latency.
View attachment 245146
As you can see 3800 CL16 is not too good at 8.28ns. CL15 would be approx. 7.76ns. Latency is better at 3733 CL15 8.04ns. Even better at 3600 CL14 7.78ns. I am 4000 CL15 which is 7.50ns. tRFC was another good for latency when I was overclocking the ram on my Ryzen 3800x.

tRDRDSCL tWRWRSCL = 3 and not 4 might work. 4 is safe and 3 is tight and 2 is extreme.
tRFC (ns) on b-die can go as low as 120 - 180ns but I working on that atm with my RAM. This scales with voltage on b-die, same with tCL. You are 136.8421ns.
tCWL = tCL is safe, tCL-1 is tight but tCL-2 is extreme. You are tCL=16 and tCWL = tCL-2 which is extreme.
tWTRS tWTRL = 4,10 which is tight and so fine as is. 4,8 is extreme.
tRTP = 10 which is tight. 12 is safe and extreme is 8.


View attachment 245145
The latency for these settings is 40.9ns in Aida64. Feedback is welcome.

Cheers, I'll adjust the calcs and try

tCWL = tCL is safe, tCL-1 is tight but tCL-2 is extreme. You are tCL=16 and tCWL = tCL-2 which is extreme.

Won't boot with tCWL=tCL or tCWL=tCL-1 just hangs at boot. tCWL=tCL-2 for some reason works only.

 

[zx128k]

Won't boot with tCWL=tCL or tCWL=tCL-1 just hangs at boot. tCWL=tCL-2 for some reason works only.

Remember Game Down mode. Geardown mode (GDM) is automatically enabled above DDR4-2666, which forces even tCL, even tCWL, even tRTP, even tWR and CR 1T.

 

[tjtremor999]

Here's my 4x8 on the 5900x

 

[Dia01]

Remember Game Down mode. Geardown mode (GDM) is automatically enabled above DDR4-2666, which forces even tCL, even tCWL, even tRTP, even tWR and CR 1T.

GDM is disabled in my latest tests