What is your max infinity fabric on ryzen 5000? September 2021 edition

[tabascosauz]

I mostly agree, but tRTP should be half tWR so 12/6, tRFC is better off at 256 as it is best timed if diviable by 16 for dual rank or 8 for SR, these suggestions according to anta777 Except for that rest great advice

As for you own settings 272 tRFC might be better at 2T allows you to run 5 tRTP, changing tWR to 12 also might improve things Might not improve anything

I totally get why it is, but between the two there is no practical difference. I'll still run tRTP 5 just for OCD sake (doesn't appear to cost me VDIMM, I'll test tonight), but there's nothing going on with tRFC 256 aside from the obvious +0.02V of running 6ns lower tRFC, so not touching 266 if it works just fine. Not even any slight latency improvements as one would normally expect from dropping 6ns in tRFC.

PS: You won't like this, but disabling led will lower ram temp a bit since led draws a bit of power, thus creating heat, nit by much, but it can be the difference of overheating at 1.48V or 1.5V

This is actually a very good point, G.skill is annoying since the RGB OFF doesn't reliably stick unless you run the software at every boot, but it's about a 0.5-1C difference on mine

 

[Cowboystrekk]

I totally get why it is, but between the two there is no practical difference. I'll still run tRTP 5 just for OCD sake (doesn't appear to cost me VDIMM, I'll test tonight), but there's nothing going on with tRFC 256 aside from the obvious +0.02V of running 6ns lower tRFC, so not touching 266 if it works just fine. Not even any slight latency improvements as one would normally expect from dropping 6ns in tRFC.



This is actually a very good point, G.skill is annoying since the RGB OFF doesn't reliably stick unless you run the software at every boot, but it's about a 0.5-1C difference on mine

I`m not the expert on this, but anta777 said that WR\RTP is in a 2:1 relationship so performance should improve if kept at a 2:1 ratio You could try tRFC 272, it will probably give exact same performance as 266, but will be slightly easier to run voltagewise since DR counts in 16 ticks 256 and 272 are divideable by 16

 

[Deleted member 215115]

I`m not the expert on this, but anta777 said that WR\RTP is in a 2:1 relationship so performance should improve if kept at a 2:1 ratio You could try tRFC 272, it will probably give exact same performance as 266, but will be slightly easier to run voltagewise since DR counts in 16 ticks 256 and 272 are divideable by 16

There's a tRFC calculator made by a very knowledgeable person from OCN. Use the pre-release sheet.

DDR4/5 Helper by Veii

docs.google.com

 

[Ibizadr]

There's a tRFC calculator made by a very knowledgeable person from OCN. Use the pre-release sheet.

DDR4/5 Helper by Veii

docs.google.com

I'm this calculator from my understand you put frequency, TCL and trc and the calculator gives 3options for trfc?

 

[Deleted member 215115]

I'm this calculator from my understand you put frequency, TCL and trc and the calculator gives 3options for trfc?

Yes but you can also input your desired latency and get tRFC that way. Use the pre-release sheet.

 

[DLD]

I would go for 3800 if stable and no whea 19 in eventviewer. 3800cl15 is about as hard as 3600cl14, but 3800 is generally a bit faster.

As for temps, there is binning involved. Some B-dies can handle a bit over 50C while tweaked, while others need below 45C.

I can run up to 1.5V without direct fan over ram, but I have a airflow case whith intake partially blowing at ram, GPU-blows a bit of air above ram and CPU draws air over ram. Over 1.5V I get overheat after a few minutes in karhu/TM5.

Remember you must run 2T and gear down mode off for cl15 to work.

If you try 3800 keep most timings as tabasco recommends but run:
15 15 15 30 45
272 tRFC
14/7 or 12/6 tWR/tRTP
4/8 or 4/10 wtr if doable.

PS: You won't like this, but disabling led will lower ram temp a bit since led draws a bit of power, thus creating heat, nit by much, but it can be the difference of overheating at 1.48V or 1.5V


I mostly agree, but tRTP should be half tWR so 12/6, tRFC is better off at 256 as it is best timed if diviable by 16 for dual rank or 8 for SR, these suggestions according to anta777 Except for that rest great advice

As for you own settings 272 tRFC might be better at 2T allows you to run 5 tRTP, changing tWR to 12 also might improve things Might not improve anything


Change voltages back if it made no difference. Tried lowering tRFC, tWR/tRTP and scls yet?

I tried what you suggested for 3800. Required CMOS reset. This kit just does not seem to like to go above 3600. Kind of annoying since my cheaper Hynix kit did it without any adjusting.

1.5v almost got to boot but BSOD before windows. Maybe it needs timings higher to get stable but at what point does it become worse than a tighter 3600mhz tune? Maybe I'm better off tuning it more at 3600 but Idk....

 

[Cowboystrekk]

I tried what you suggested for 3800. Required CMOS reset. This kit just does not seem to like to go above 3600. Kind of annoying since my cheaper Hynix kit did it without any adjusting.

1.5v almost got to boot but BSOD before windows. Maybe it needs timings higher to get stable but at what point does it become worse than a tighter 3600mhz tune? Maybe I'm better off tuning it more at 3600 but Idk....

Tried 3666 or 3733? A few Ryzen 5000 can't get 3800 or above stable. Did you get 3800 working with Hynix?

 

[DLD]

Tried 3666 or 3733? A few Ryzen 5000 can't get 3800 or above stable. Did you get 3800 working with Hynix?

Haven't messed with other speeds. Yes I was running 3800mhz with G.Skill F4-3600C16D-32GTZNC. Wanted to get my latency lower so bought the more expensive kit figuring I could still easily run 3800 with better timings. I was wrong lol.

 

[MxPhenom 216]

So GDM on and Command Rate at 1T, or GDM off and Command rate at 1T?

I see people running the former here. Im still confused on GDM, so i have it off running at 2T right now:

 

[freeagent]

Its a tougher load for me to run 1T GDM off. My tuning skills are not leet enough to make it far.

 

[Cowboystrekk]

Haven't messed with other speeds. Yes I was running 3800mhz with G.Skill F4-3600C16D-32GTZNC. Wanted to get my latency lower so bought the more expensive kit figuring I could still easily run 3800 with better timings. I was wrong lol.

Try the settings I suggested again, but try tRFC 272, wtrl 12, trrdl 6, trdwr 10, that should be a lot easier to run. If it doesn`t work, try it at 3733.

So GDM on and Command Rate at 1T, or GDM off and Command rate at 1T?

I see people running the former here. Im still confused on GDM, so i have it off running at 2T right now:

View attachment 226259

1T and GDM off is slightly faster than 2T and 1T+ gdm, but much harder to run if you are at 3800+. You usually need to configure DrvStr, sometimes ProcODT etc in order to make it work. Sometimes it just won`t work. At 3600 it`s a bit easier to run.

 

[DLD]

Try the settings I suggested again, but try tRFC 272, wtrl 12, trrdl 6, trdwr 10, that should be a lot easier to run. If it doesn`t work, try it at 3733.

That's a no go at both speeds. Screen just goes black and does nothing when I apply settings. Requires CMOS reset each time.

So far this seems to be my stable settings at the moment.

 

[Cowboystrekk]

That's a no go at both speeds. Screen just goes black and does nothing when I apply settings. Requires CMOS reset each time.

So far this seems to be my stable settings at the moment.

That's at 1.5V ram?

 

[DLD]

That's at 1.5V ram?

For my current settings? That's at 1.45v.

 

[Ibizadr]

For my current settings? That's at 1.45v.

At 1.5x volts you can get 3800 cl16 easy. Don't worry b die can run 1.5v daily they say.

 

[Cowboystrekk]

That's at 1.5V ram?

Did you try 1.5V at the settings I suggested? Another approach is 3800 1.45V 16 16 16 32
48 rc
288 rfc
4/6/16 rrds/l/faw
16/8 wr/rtp
4/12 wtr
16 cwl
4 rdrd/wrwr scl
10 rdwr
3 wrrd

Keep rest at auto, use gdm on and 1T. If that works you might need to adjust DrvStr, ProcODT etc for 2T to boot.

 

[DLD]

Did you try 1.5V at the settings I suggested? Another approach is 3800 1.45V 16 16 16 32
48 rc
288 rfc
4/6/16 rrds/l/faw
16/8 wr/rtp
4/12 wtr
16 cwl
4 rdrd/wrwr scl
10 rdwr
3 wrrd

Keep rest at auto, use gdm on and 1T. If that works you might need to adjust DrvStr, ProcODT etc for 2T to boot.

Yes pretty sure I tried 1.5 as well. Just did not want to boot with it. I'll give those settings a try later today.

 

[Dar1usElite]

Change voltages back if it made no difference. Tried lowering tRFC, tWR/tRTP and scls yet?

Yes... Lowering tRFC beyond 496 gave errors I'll have to check about the others.

 

[DLD]

Did you try 1.5V at the settings I suggested? Another approach is 3800 1.45V 16 16 16 32
48 rc
288 rfc
4/6/16 rrds/l/faw
16/8 wr/rtp
4/12 wtr
16 cwl
4 rdrd/wrwr scl
10 rdwr
3 wrrd

Keep rest at auto, use gdm on and 1T. If that works you might need to adjust DrvStr, ProcODT etc for 2T to boot.

So far ran 1 hr 10 min with 2600 % coverage and 0 errors at those settings.

 

[Ibizadr]

There's a tRFC calculator made by a very knowledgeable person from OCN. Use the pre-release sheet.

DDR4/5 Helper by Veii

docs.google.com

This calculation for trfc gives me a slightly boost.

 

[Cowboystrekk]

So far ran 1 hr 10 min with 2600 % coverage and 0 errors at those settings.

That is good. It seems you need some custom settings to run cl15. Check aida for performance. For tweaking performance further you can try 272 rfc, but it might not work. 9 rdwr also might work, 12 wr and 6 rtp might work, 10 or 8 wtrl might work.

 

[tabascosauz]

Yes pretty sure I tried 1.5 as well. Just did not want to boot with it. I'll give those settings a try later today.

That is good. It seems you need some custom settings to run cl15. Check aida for performance. For tweaking performance further you can try 272 rfc, but it might not work. 9 rdwr also might work, 12 wr and 6 rtp might work, 10 or 8 wtrl might work.

Yesterday my Impact freaked out when I made a mistake and set some unallowable timings under GDM. Booted once then crashed to BIOS recovery mode and needed a clear cmos), so there are absolutely little things that will cause no boot on settings that should be okay. Ended up reflashing a clean 3601 just in case. Even on Asus which ime has decent autorecovery and good BIOS resilience amongst AM4 vendors.

There is obviously some variation in binning, but imo no kit as high end as 3600CL14 should need 1.45V just for 3800CL16.......my kit is pretty middle of the road honestly for this bin (some others similar quality with 3200CL14). Currently running 3800CL15 @ 1.42, 16 cycles stable anta777

You can keep the looser sub timings but outside of tRFC all of them combined should really only make a 0.01-0.02V difference to these.

 

[DLD]

That is good. It seems you need some custom settings to run cl15. Check aida for performance. For tweaking performance further you can try 272 rfc, but it might not work. 9 rdwr also might work, 12 wr and 6 rtp might work, 10 or 8 wtrl might work.

Ran over 2 hours without an error. This is the benchmark results.

Yesterday my Impact freaked out when I made a mistake and set some unallowable timings under GDM. Booted once then crashed to BIOS recovery mode and needed a clear cmos), so there are absolutely little things that will cause no boot on settings that should be okay. Ended up reflashing a clean 3601 just in case. Even on Asus which ime has decent autorecovery and good BIOS resilience amongst AM4 vendors.

There is obviously some variation in binning, but imo no kit as high end as 3600CL14 should need 1.45V just for 3800CL16.......my kit is pretty middle of the road honestly for this bin (some others similar quality with 3200CL14). Currently running 3800CL15 @ 1.42, 16 cycles stable anta777

You can keep the looser sub timings but outside of tRFC all of them combined should really only make a 0.01-0.02V difference to these.

View attachment 226362

Yes I thought my kit would be a high bin. Which is why I'm surprised I'm having so much issue getting it stable at 3800. I was hoping to maybe even go above that if my IF allowed. I never tried anything beyond 3800 / 1900 so I don't even know what my CPU limits are.

Just played Warzone for a few hours with no issues as well. So I will try lowering what you suggested tomorrow and see what it can do.

 

[Cowboystrekk]

Ran over 2 hours without an error. This is the benchmark results.


Yes I thought my kit would be a high bin. Which is why I'm surprised I'm having so much issue getting it stable at 3800. I was hoping to maybe even go above that if my IF allowed. I never tried anything beyond 3800 / 1900 so I don't even know what my CPU limits are.

Just played Warzone for a few hours with no issues as well. So I will try lowering what you suggested tomorrow and see what it can do.

You latency is kinda high. Try the following: set soc volt to 1.1v, see if latency improves, try 1.12V and 1.06v iod, see if that improves more. You should be getting around 55ns with current settings. As for further tweaks cl 15 should be possible at 2T gdm off, but you probably need to change cad, procODT etc. You can try 48 proc, 40 20 30 20 or 60 20 30 20 and see if it helps. If you can boot 2T we have room for improvement and maybe cl15 can work Let us know how this goes.

 

[damric]

Screwing around with these Micron E die sticks with my Ryzen 1600. So far so good.