Ryzen DRAM Calculator by 1usmus

[Taraquin]

@Taraquin
what memtest are you using?
some will show errors only if sticks are defective (more or less), but not any problems with clocks/timings/voltage..
testing under win is usually not good (you cant test all ram), so i recommend hci (buy the 15$ deluxe, allows boot from stick),
and test to 100% to verify settings, to 400% to see if your stable, better to 1000%..

I use the buildin dram test. Test for 200% has been my choice so far. Last ramtweak was stable 24/7 for 1 month with put crash. I can check out hci, thx for advice.

 

[Taraquin]

Why are you so worried about voltage? DDR4 pulls very little power. 1.5v is perfectly fine for daily usage. And B-die scales very well with voltage. I have the same kit (two actually) running in 4x8 configuration and i just copied Buildzoid's settings for these from one of his videos:

Seems I was a bit unlucky in the lottery, tried various settings with little luck even at 1.5V. The above setting seems most promising so far, and a bit faster than the best rev E setting. I had a super tight 3733cl15-setting. Passed karhu memtest without problems at 1600% (98% coverage), but after a restart I got errors at 30%. Sticks don't feel warm at all to touch, max 35C during load. Even though B-die can run lower tRCDRD, tRC and tRFC, the rev E can run lower tWTRS/L, tRP and 1t without GDM at lower voltages than my B-die. Rev E 3733cl15@1.43V is very close in perf to the above B-die setting at 1.5V.

 

[vinkenzo]

hi guys
can you please help me with Timing of my RAM?
i have Gskil Ripjaws 2x8GB 4000mhz CL15+ asus b550 tuf Plus + ryzen 3950X
i use export report with Taiphoon and import it on DRAM CALCULATOR for Ryzen 1.7.3 and both of SAFE & FAST setting does not boot my system
what could be the problem ? can someone give me best option for my RAM according to info that i attached ?

 

[Tomorrow]

hi guys
can you please help me with Timing of my RAM?
i have Gskil Ripjaws 2x8GB 4000mhz CL15+ asus b550 tuf Plus + ryzen 3950X
i use export report with Taiphoon and import it on DRAM CALCULATOR for Ryzen 1.7.3 and both of SAFE & FAST setting does not boot my system
what could be the problem ? can someone give me best option for my RAM according to info that i attached ?

Try the Builzoid ones i posted here: https://www.techpowerup.com/forums/...culator-by-1usmus.246327/page-14#post-4465020

Obviously you may need to adjust to 3733 or 3600 if your IF does not go above 1800 or 1866.

 

[Taraquin]

I will agree with previous suggestions. As for voltage and what would be ok for 24/7 depends on Ram module temp. As said, b-dies scale nicely with voltage as long as you keep it cool. If you can keep it cool, even 1.6V is ok for 24/7. If cooling is inadequate errors will appear rather quickly. If your sticks have temp sensors then it would appear on ThaiphoonBurner.

After some further testing of the 4400cl19 kit I have it stable at 3733cl16-17-8-13-21 with gdm with tight subs at 1.43V. It seems that 17 tRCDRD helped a bit and CL16 allowed me to reduce voltage which lowered temps. Performance is 3 sec slower in dram test vs CL15@1.5V (best was 104,5, now I have 107,5, rev E has 113) and lost 1ns i aida, but overall perf is 5% better than rev E. A bit sceptical when we get to the summer with higher ambient temp, but so far so good.

 

[Zach_01]

So, what's the temp under RAM stress test?

 

[Taraquin]

So, what's the temp under RAM stress test?

There is no thermal readings and I have no thermal cam but they feel a bit warmer than my skin so guess 40C-ish. With the 1.5V CL15 settings they were uncomfortable to touch so I bet closer to 50C. Gpu blowing hot air at them is the issue so if I mine plus run mem stress test they begin to spit errors after 10-15minutes. In gaming they don't get as hot so apparently temp threshold is not reached. A different gpu without rear vent from second fan would be the best option, but getting a 3060ti/3070 now at a descent price is like finding a snowball in an active vulcano...

 

[Tomorrow]

After some further testing of the 4400cl19 kit I have it stable at 3733cl16-17-8-13-21 with gdm with tight subs at 1.43V. It seems that 17 tRCDRD helped a bit and CL16 allowed me to reduce voltage which lowered temps. Performance is 3 sec slower in dram test vs CL15@1.5V (best was 104,5, now I have 107,5, rev E has 113) and lost 1ns i aida, but overall perf is 5% better than rev E. A bit sceptical when we get to the summer with higher ambient temp, but so far so good.

Zentimings screenshot?

Im running them at 14-13-16-13-27 at 1.55v but occasionally there are errors (appcrashes). My temps are in the 0 range as i have active cooling on them.

 

[Zach_01]

Yeah, active cooling upon sticks is a must for 1.45+V. And around 40C, or lower, is the right temp for b-dies. At 45+C they start to spit errors.

 

[Taraquin]

Zentimings screenshot?

Im running them at 14-13-16-13-27 at 1.55v but occasionally there are errors (appcrashes). My temps are in the 0 range as i have active cooling on them.

Can post when I'm back from work

 

[Space Lynx]

Yeah, active cooling upon sticks is a must for 1.45+V. And around 40C, or lower, is the right temp for b-dies. At 45+C they start to spit errors.

this is very good to know.

 

[Taraquin]

Zentimings screenshot?

Im running them at 14-13-16-13-27 at 1.55v but occasionally there are errors (appcrashes). My temps are in the 0 range as i have active cooling on them.

If you wonder about my low VDDP and VDDG they are totally stable as is, but since I mine 24\7 except when gaming I run them as low as I can to get lower CPU temp. I have also tried 1050 vddg and 950 vddp, made no difference whatsever at current or fast timings, but CPU gets hotter and uses a bit more power. if I wanna run 3800\1900 I need 1.175 soc and 1.125 vddg, but I even the get rare reboots so I stick with 3733. Some timings like bottom 4 on left and bottom 6 on right cannot be adjusted in my bios.

 

[Taraquin]

Was able to lower tRFC to 260, 255 gave me a error in karhu after 800% and 250 was unstable. Any further tweaks that is doable without raising voltage? tRCDRD wont budge, 16 is unstable, must raise voltage to stabilise. Increasing vddg iod did not help.

 

[Taraquin]

Did some further tweaking. Getting 106.5 sec on dram test now. Still at 1.43V

 

[jesdals]

Been tweaking my Patriot Viper 4400MHz kits and ended up with these settings at 1.5v

Found that Tomb Raider was a good vay to see if my settings was stable

Changeing voltage belove 1.5 or changeing Tfc or tCL to a lower level would make the benchmark crash - at 20 runs it was proved stable and actually managed to use more than 16GB at the last runs

 

[HD64G]

Been tweaking my Patriot Viper 4400MHz kits and ended up with these settings at 1.5v
View attachment 196529View attachment 196530
Found that Tomb Raider was a good vay to see if my settings was stable

View attachment 196531
Changeing voltage belove 1.5 or changeing Tfc or tCL to a lower level would make the benchmark crash - at 20 runs it was proved stable and actually managed to use more than 16GB at the last runs

Some good ram chips in there and great effort in finding stable but ultra-fast timings also!

 

[Taraquin]

Been running this stable for over a week now. Going lower on SOC or IOD voltage reduces performance so there seems to be some sort of protection mechanism there. Poor binning on ram and insufficient cooling makes it hard to tighten further or go higher voltage.

 

[Taraquin]

Tried in many different ways now and the closest I got to tighter timings was 1.47V and tRCDRD 15, tRAS 31 and tRFC 276, but got he overheat error in TM5 after 5 mins. Also tried 1T and GDM off, stable at 1.47V, but got the overheat error after 5 mins. 1.44V and my current timings it is then. If this GPU-crisis could end so I could get at GPu that does not blow hot air straight at my ram maybe I could go further

 

[jesdals]

did some small improvements, but tCL and tRFC still locked at their max for now

 

[FilipM]

@Taraquin - I struggled at CL15 on 4x8 on TM5...so I went CL16. I altered some subtimings, it may seem weird but, thing is performing as quick as my previous setup at 4000 CL15... interesting

1.46VDimm

 

[Taraquin]

View attachment 196803

View attachment 196805


@Taraquin - I struggled at CL15 on 4x8 on TM5...so I went CL16. I altered some subtimings, it may seem weird but, thing is performing as quick as my previous setup at 4000 CL15... interesting

1.46VDimm

I get 99sec A few timings you can tighten are tRP 15 and then lower tRC 1 and tRFC 6, trrdl 6 or 4, tWTRL 12 or 10, tRDWR 10, 9 or 8. That should help a bit more

 

[jesdals]

@Taraquin - I struggled at CL15 on 4x8 on TM5...so I went CL16. I altered some subtimings, it may seem weird but, thing is performing as quick as my previous setup at 4000 CL15... interesting

1.46VDimm

Interesting results with my settings i get

 

[Taraquin]

Interesting results with my settings i get
View attachment 196836

Try tRAS=tCL+tRCDRD and tRC= tRAS+tRP. Then try tRFC=tRCx6. tRRDL works better as 4 or 6, tWTRL should be 12, 10 or 8, tWTRS should be 4 or 3. tWR 12, tRTP 6. Try that and see how it goes

 

[FilipM]

This is what I mean @Taraquin, I had em tighter but scored worse when I went to CL16, over 100 sec, hence why I said its interesting


These changes brought it back

 

[HD64G]

This is what I mean @Taraquin, I had em tighter but scored worse when I went to CL16, over 100 sec, hence why I said its interesting


These changes brought it back

Don't bother. Less than 0,2" isn't difference at all. And most boards turn odd numbers to even, so your cl15 setting might be cl16 in the end, and that is why performance is almost exactly the same. Have fan using your system now and keep it stable. That's the most important thing.