Ryzen DRAM Calculator by 1usmus

[tabascosauz]

Spent way more time than I expected on this. Ended up going back to version 1.7.0 of Dram Calculator to get these timings for G.Skill f4 3600c16 8GVKC ram now running at 3400 cl14. It's Hynix cjr or djr. The older version of Thaiphoon burner reported djr, the current version says cjr. How does this look. I couldn't seem to get above 3400 even at reduced cas latency. I have 2600x cpu so 3400 may be the highest frequency my memory controller is going to handle with this ram/motherboard (AsRock B450m Pro4).
View attachment 201619

If that's the lowest tRFC you can get to, it's definitely CJR. Mine is the same at 471, aka 261ns @ 3600. 250ns won't do, but should be a piece of cake for real DJR.

Looks pretty good, probably as tight as things will go on CJR. You can try going lower on tRTP but that's about it, CJR doesn't seem to handle 4/4/16/4/10/10 very well (tRRDS-tWR).

@Taraquin Hynix doesn't scale tRP, unlike Micron.

 

[GorbazTheDragon]

Maybe see what GDM on yields in terms of timings and perf.

 

[bfollett]

Looks good. Newest bios? You could try tRTP 6 or tWR 10 and tRTP 5, tWTRL might do 10 or 8. Have you tried lower tRP or is 19 lowest?

I'd tried lowering tRP to 18 but that generates errors. I haven't tried changing any of the other timings you listed. I'm not a memory guru. Which of those timings do I try solo and which are dependent on other timings being set at the same time?

Thanks,

Bob

 

[Taraquin]

I'd tried lowering tRP to 18 but that generates errors. I haven't tried changing any of the other timings you listed. I'm not a memory guru. Which of those timings do I try solo and which are dependent on other timings being set at the same time?

Thanks,

Bob

TRTP should be haf of tWR. Try 6 first. If that works try tWR 10 and tRTP 5. TWTRL can be done separately, but affects perf less than tWR/tRTP.

 

[bfollett]

Well, tWR 10 tRTP 5 and TWTRL 8 all worked (although I haven't run them through memtest86 yet). Unfortunately they show no improvements in Aida64 results. Should I just plug the original DRam Calc values back in or go through the trouble of running memtest86 with these new settings? In any case thanks for taking a look at my post.

 

[Taraquin]

Well, tWR 10 tRTP 5 and TWTRL 8 all worked (although I haven't run them through memtest86 yet). Unfortunately they show no improvements in Aida64 results. Should I just plug the original DRam Calc values back in or go through the trouble of running memtest86 with these new settings? In any case thanks for taking a look at my post.

They don't necissarily imprpve auda scores, but they can improve for instance gaming performance. On my setup I get 500 better write/read speed in aida with 10tWR/5tRTP vs 12/6.

 

[bfollett]

OK, I'll run with those settings today and let Memtest86 hit them hard overnight.

 

[brandon7171]

This is Really Amazing here been using this cpu about a week with the new bios update, this bios update has fixed my issue, with my cpu doing single and double restarts. About to go play with some timings and see if i get any better on numbers.

 

[Taraquin]

OK, I'll run with those settings today and let Memtest86 hit them hard overnight.

Forgot to ask: Have you tried lower tRFC? If you haven't that can impact performance quite a bit.

Educate me about Trfc behavior pls (2 vs 4 dimms)

www.overclock.net

According to this 425 should be doable. If you got a good bin then sub 400 might be possible On my rev E I can easily do 525 at 3733 though chart says 560.

 

[GorbazTheDragon]

B-die should do 00 RFC at 3800 1.45v, irrespective of single or dual rank.

 

[Taraquin]

B-die should do 00 RFC at 3800 1.45v, irrespective of single or dual rank.

He's got CJR.

 

[bfollett]

I've tried lowering lowering tRFC by 10, but that generated errors, not sure if I could lower it by a smaller amount but I'm not sure the pay off would be worth the hours of testing.

 

[Taraquin]

I've tried lowering lowering tRFC by 10, but that generated errors, not sure if I could lower it by a smaller amount but I'm not sure the pay off would be worth the hours of testing.

Even 10 is not worth it. If it was 50 it might be 1% fps in games

 

[bfollett]

Well, I'm pretty happy with my results. I bought my 3600cl16 16gb memory kit about a year ago for $68 (U.S. dollars). I've managed 3400 cl14 for about half of what 3200 cl14 would cost(although with somewhat looser timings). I'm just curious why I had to use the older v1.7.0 of Dram Calc to get those timings. Did 1usmus experience too many problems with those settings? The current version of Dram Calc suggests cl15 now.

 

[GorbazTheDragon]

He's got CJR.

oops mixing the posts (x

 

[Dirtyoliver]

Hi guys, first time messing with Ram optimization, this is what I got so far, using 1.36v

XMP (16-19-19-39) wont boot with 1.4v but will do with 1.45,

where can I improve?

 

[brandon7171]

Hi guys, first time messing with Ram optimization, this is what I got so far, using 1.36v

XMP (16-19-19-39) wont boot with 1.4v but will do with 1.45,

where can I improve?

View attachment 206835View attachment 206836

Thats looks really good, here is mine. Ur latency is awesome!!

 

[Makaveli]

Thats looks really good, here is mine. Ur latency is awesome!!
View attachment 206881View attachment 206883

Your latency would be better than his if you were on a Zen 3 chip considering your both at 1900 but you have lower timings.

 

[brandon7171]

Your latency would be better than his if you were on a Zen 3 chip considering your both at 1900 but you have lower timings.

Yes, i agree with u but i got what was affordable which was this 3700X at the time, they still pricy tho lol. My next is going to be the 5900X r the 5950.

 

[Makaveli]

Yes, i agree with u but i got what was affordable which was this 3700X at the time, they still pricy tho lol. My next is going to be the 5900X r the 5950.

I've already seen price drops plenty so it won't take too much longer xmas time maybe some great sales

 

[Wickedt]

Hi guys, first time messing with Ram optimization, this is what I got so far, using 1.36v

XMP (16-19-19-39) wont boot with 1.4v but will do with 1.45,

where can I improve?

View attachment 206835View attachment 206836

You should try 3600 with tighter timings, i have my ram, different ram, but running at 14 14 14 14 28, you never know what it will do till you test it at diff timings, 55ns latency is very good though. Also, don't be afraid to try higher voltages, if you notice most high end cl 14 3800 bdie sold by gskill are xmp 1.5 volts. I have the royal silver, and i asked their tech guys if 45c on the ram was too high, he told me my ram could be pushed much higher then that. I was happy there, then i tried 3600 at super tight timings, lower voltage, and im pretty happy there

 

[Taraquin]

Hi guys, first time messing with Ram optimization, this is what I got so far, using 1.36v

XMP (16-19-19-39) wont boot with 1.4v but will do with 1.45,

where can I improve?

View attachment 206835View attachment 206836

Can you run 4000/2000 infinity fabric? That will improve scores a bit.

Things you can improve:
2t instead of gear down mode and 1t.
Try tRP 15, tRC 47, tRFC 282, tWR 10 and tRTP 5. Don't change all at once, change one and one. You might have to increase volt a bit, but not much. Set vddp to 900mv, that can increase stability.

 

[Dirtyoliver]

Can you run 4000/2000 infinity fabric? That will improve scores a bit.

Things you can improve:
2t instead of gear down mode and 1t.
Try tRP 15, tRC 47, tRFC 282, tWR 10 and tRTP 5. Don't change all at once, change one and one. You might have to increase volt a bit, but not much. Set vddp to 900mv, that can increase stability.

I had a problem here, cant use my pc right now, but xmp with 4000 16-19-19-39 runs with 1.45v but latency increases... ill try your steps once I get back...

thx for your feedback.

 

[Wickedt]

I had a problem here, cant use my pc right now, but xmp with 4000 16-19-19-39 runs with 1.45v but latency increases... ill try your steps once I get back...

thx for your feedback.

This is something i noticed too, i can run 4000, but the latency is higher, which negates the whole purpose. Im now running it at 3600 cl14 but with super tight timings, and much better latency.

 

[Pictus]

Thats looks really good, here is mine. Ur latency is awesome!!
View attachment 206881View attachment 206883

Your CLDO VDDP is too high!
I would use at 0.900 and would not go above 0.950V