Ryzen 3900x bios settings

[phill]

Hi @leo 10

For my 3900X system, I've just enabled XMP and set the voltages to the minimum I've needed to. The only thing that I have set is my CPU vcore. I've not had any issues with my system and I'm only on air cooling as well. I currently use a 14D cooler which is just dropped on top of the CPU, I've not clamped it down as I don't have the AM4 bracket for it.

Have you tried lowering the vcore further to control the temperature?

 

[leo 10]

Hi @leo 10

For my 3900X system, I've just enabled XMP and set the voltages to the minimum I've needed to. The only thing that I have set is my CPU vcore. I've not had any issues with my system and I'm only on air cooling as well. I currently use a 14D cooler which is just dropped on top of the CPU, I've not clamped it down as I don't have the AM4 bracket for it.

Have you tried lowering the vcore further to control the temperature?

my temp is around the 80°, not too bad i think, the problems are:
1 the cpu doesn t boost over 4.00 ghz and render time is too much (100 sec against my 120 sec of render time)
2 i cant set ram to 3600 but only 3200 or system will shut down under load..

so i set ram at 3200 and dram voltage at 1.35, cpu clock ratio 4.3 and cpu vcore at 1.31 (100 sec against my 105 sec)
i tested cpu clock ratio 4.3 and cpu vcore at 1.30 but crsh under load
these are the only things i chenged in bios and i was wandering if i should have change something else like pbo or others

for ram i tryed 3600 or enable xmp and dram voltage at 1.40 but it crashed under load
so i used 3200 with dram voltage at 1.35

i think that maybe i can reduce of one step the vcore that now is at 1.31 but 1.30 is unstable.

 

[phill]

I'd ignore trying to set the CPU speed, if you limit the voltage, the CPU will just speed up to whatever it can with the voltage you give it.
I've set my Vcore to 1.00v, I'm still able to hit 4.20GHz under a 100% load which my CPU is always at, it is never idle

I'll try and grab some bios pictures for you and upload them shortly

 

[manofthem]

I'd ignore trying to set the CPU speed, if you limit the voltage, the CPU will just speed up to whatever it can with the voltage you give it.
I've set my Vcore to 1.00v, I'm still able to hit 4.20GHz under a 100% load which my CPU is always at, it is never idle

I'll try and grab some bios pictures for you and upload them shortly

To be fair, your CPU seems awfully good to be stable at those settings.

Mine is stable at 4.0@1.15v, which is lame compared to yours chip.i haven't spent hours trying to get the best of this chip yet, but still...

think that maybe i can reduce of one step the vcore that now is at 1.31 but 1.30 is unstable.

I did something similar, little by little adjust the voltage(s) to see where it begins to become unstable.

I'll take a gander at my settings and report back.

 

[purecain]

Try running your ram at 1.5v if you want 3600mhz to work.
@phill Thats an interesting choice you've made. I may have to try it.

 

[tabascosauz]

Try running your ram at 1.5v if you want 3600mhz to work.
@phill Thats an interesting choice you've made. I may have to try it.

1.5V isn't a safe daily voltage for anything other than B-die and maybe deprecated 4Gb E-die. The common 3200 XMP ICs at this point in time should need no more than 1.35-1.45V max to hit 3600.

Unstable at speeds like 3600 could be anything from insufficient VSoC, poorly configured VDDG, poorly configured procODT, to a misguided attempt to change frequency from 3200 to 3600 without changing any of the timings accordingly, which does not work on lower tier, lower quality or lower-binned ICs.

 

[phill]

I knew I had them somewhere...



And a screen grab from Windows as I type this

I don't control the overclock, I don't touch the all core settings as you loose single core performance, but that is what I do and I've been running stable for months like it Oh bearing in mind that the heatsink on the CPU isn't mounted, it's just on top.. I'm very happy with the 3900X, I just wish I had the 3950X instead
Oh and the power consumption was with the two 1080 TI's in the system running FAH as well as WCG running as well I hope this helps guys

 

[leo 10]

1.5V isn't a safe daily voltage for anything other than B-die and maybe deprecated 4Gb E-die. The common 3200 XMP ICs at this point in time should need no more than 1.35-1.45V max to hit 3600.

Unstable at speeds like 3600 could be anything from insufficient VSoC, poorly configured VDDG, poorly configured procODT, to a misguided attempt to change frequency from 3200 to 3600 without changing any of the timings accordingly, which does not work on lower tier, lower quality or lower-binned ICs.

my ram are 2 ddr4 tridentz neo 3600 16gb so xmp is going auto to 3600 but system shut down under load.
i can try 1.45 max dram voltage if it is safe or just leave at 3200

I'd ignore trying to set the CPU speed, if you limit the voltage, the CPU will just speed up to whatever it can with the voltage you give it.
I've set my Vcore to 1.00v, I'm still able to hit 4.20GHz under a 100% load which my CPU is always at, it is never idle

I'll try and grab some bios pictures for you and upload them shortly

at stock values cpu isn t limited at all in voltage or speed, everything is set to auto,
but my bench are bad, under load while rendering doesn t go above 4.00 ghz, never....why?

 

[tabascosauz]

my ram are 2 ddr4 tridentz neo 3600 16gb so xmp is going auto to 3600 but system shut down under load.
i can try 1.45 max dram voltage if it is safe or just leave at 3200

No, because there's no reason in hell your 3600 16-19-19 DJR kit should need its max safe voltage to run 3600 XMP, and Gigabyte already automatically overvolts any RAM anywhere up to 0.03V higher than whatever you set it to on some boards.

Take the DRAM calculator Safe recommendation and go from there. Go up to 1.40V DRAM if it's absolutely necessary, there should not be any reason for DJR memory to need more than that just to sustain loose XMP timings at 3600.



Leave XMP on, as it sets the minor voltages for you automatically. Manually change the timings and voltages in the above picture, then test again.

By default, Gigabyte is setting SoC voltage rather low on your board. On my Gigabyte ITX B450, it's set automatically to 1.05V @ 3200 XMP and 1.1V @ 3600 XMP. Manually set SOC VOLTAGE to 1.1V right on the dot, don't touch Dynamic.

Download Zentimings, post a screenshot after you've changed everything. https://github.com/irusanov/ZenTimings/releases
Also, take a full screenshot of the memory section in Ryzen Master.

 

[leo 10]

so i still don t know if cpu clock ratio 4.3 and cpu vcore at 1.31 are safe settings and if there are other change to be made??
the core boost to 4.5-4.6 ghz for really short time so i don t think that loosing single core performance is really a big deal
but with these setup render time decrease is appreciable...
so should i stay with these setup and maybe try lowering vcore if i can, and try 1.45 dram voltage with xmp set to 1 (3600) ??

Take the DRAM calculator Safe recommendation and go from there. Go up to 1.40V DRAM if it's absolutely necessary, there should not be any reason for DJR memory to need more than that just to sustain loose XMP timings at 3600.

i ve allready tryed 1.40 dram voltage and system shut down under load.
sorry but using calculator and change timings seems a little bit complicated for me...this is the first time i
assembled a pc and mess with bios...
a question: if i set manually ram to 3200 infinity fabric change automatically??

 

[phill]

It's because of the temps. The CPU will downclock till the temps are in check, this is why I lowered my vcore rather than kept it to auto. If I kept it to auto, within 1 minute I was hitting 90C+ when I was running WCG which is unacceptable and of no use to me.

Simply by lowering the temps, I was able to get the temps undercontrol and get the CPU boosting to a decent speed. Before I was hitting 80C+ and lowering my core speed below 3.20GHz in Ryzen master which was in my experience, doing jack all anyways, so I just use the bios and set it there, everything else is manual set to the base voltages..

so i still don t know if cpu clock ratio 4.3 and cpu vcore at 1.31 are safe settings and if there are other change to be made??
the core boost to 4.5-4.6 ghz for really short time so i don t think that loosing single core performance is really a big deal
but with these setup render time decrease is appreciable...
so should i stay with these setup and maybe try lowering vcore if i can, and try 1.45 dram voltage with xmp set to 1 (3600) ??


i ve allready tryed 1.40 dram voltage and system shut down under load.
sorry but using calculator and change timings seems a little bit complicated for me...this is the first time i
assembled a pc and mess with bios...

If you are using XMP and the RAM is causing the crashes then check the RAM, it could be faulty or did you check with the qualified RAM list? There's no way you should need more volts than XMP gives it to get the system running at 3600.

 

[Chomiq]

No, because there's no reason in hell your 3600 16-19-19 DJR kit should need its max safe voltage to run 3600 XMP, and Gigabyte already automatically overvolts any RAM anywhere up to 0.03V higher than whatever you set it to on some boards.

Take the DRAM calculator Safe recommendation and go from there. Go up to 1.40V DRAM if it's absolutely necessary, there should not be any reason for DJR memory to need more than that just to sustain loose XMP timings at 3600.

View attachment 163906

Leave XMP on, as it sets the minor voltages for you automatically. Manually change the timings and voltages in the above picture, then test again.

By default, Gigabyte is setting SoC voltage rather low on your board. On my Gigabyte ITX B450, it's set automatically to 1.05V @ 3200 XMP and 1.1V @ 3600 XMP. Manually set SOC VOLTAGE to 1.1V right on the dot, don't touch Dynamic.

Download Zentimings, post a screenshot after you've changed everything. https://github.com/irusanov/ZenTimings/releases
Also, take a full screenshot of the memory section in Ryzen Master.

I own the same board as OP, going for primary timings and auto for everything else will give him shitty performance.

 

[tabascosauz]

so i still don t know if cpu clock ratio 4.3 and cpu vcore at 1.31 are safe settings and if there are other change to be made??
the core boost to 4.5-4.6 ghz for really short time so i don t think that loosing single core performance is really a big deal
but with these setup render time decrease is appreciable...
so should i stay with these setup and maybe try lowering vcore if i can, and try 1.45 dram voltage with xmp set to 1 (3600) ??

i ve allready tryed 1.40 dram voltage and system shut down under load.
sorry but using calculator and change timings seems a little bit complicated for me...this is the first time i
assembled a pc and mess with bios...

Literally didn't ask you to use the DRAM calc, I provided the screenshot for you. You didn't even provide an answer as to whether you've ever tried manually setting 1.1V SoC Voltage in your tests. DRAM Voltage isn't the only one that matters at higher speeds.

There's nothing confusing about the timings. They're all listed openly in the Advanced Memory Settings menu, and you only need to change the ones inside the red box in the picture. You're already in BIOS, and it's one extra step.

@Chomiq I mean, he's paranoid about the Advanced Memory Settings menu. Slow 3600 with primary settings that doesn't crash under load still seems to be a better option than slow 3600 that crashes under load or slow 3200. Auto on most reasonable boards should just default DJR to pretty much what is recommended under the Safe settings.

 

[Chomiq]

Changing cpu vcore and soc voltage from auto to normal should help with temps.

 

[leo 10]

Changing cpu vcore and soc voltage from auto to normal should help with temps.

my temp under load are around 80°, isn t that good?

Literally didn't ask you to use the DRAM calc, I provided the screenshot for you. You didn't even provide an answer as to whether you've ever tried manually setting 1.1V SoC Voltage in your tests. DRAM Voltage isn't the only one that matters at higher speeds.

i was thinking that i have to find out by myself the right timings...but now i understand that i can copy yours, is that right??
no i only change dram voltage to 1.35

 

[tabascosauz]

i don t have normal..or auto or i can set a value
my temp under load are around 80°, isn t that good?

i was thinking that i have to find out by myself the right timings...but now i understand that i can copy yours, is that right??
no i only change dram voltage to 1.35

Those aren't mine, those are what the Calc suggests for its "Safe" profile. "Safe", because it should be achievable for just about anyone.

Just set manual SOC to 1.1V, don't touch Dynamic offset for SOC, change DRAM to 1.4V, and just the timings inside the red box for now. See where that gets you, see if it stops the crashing.

And get both Zentimings and Ryzen Master so that you can show us your timings, minor voltages, procODT and CADBUS settings after you're done testing.

As for Command Rate (it's at the very bottom of the timings list in BIOS), make sure it's either set to 1T along with Gear Down Mode set to Enabled, or make sure it's set to 2T. Either should work. Just make sure Command Rate isn't 1T and Gear Down Mode isn't Disabled at the same time.

 

[leo 10]

If you are using XMP and the RAM is causing the crashes then check the RAM, it could be faulty or did you check with the qualified RAM list?

i didn t check but i have a Mobo : x570 aorus elite and ram are 2 ddr4 tridentz neo 3600 16gb
are they incompatible with each other?
i found on this page

Memorie compatibili con Gigabyte X570 AORUS ELITE

Non preoccuparti della compatibilità con Memorie. Con la nostra lista di componenti compatibili supportati per Gigabyte X570 AORUS ELITE, troverai sempre il prodotto perfetto per le tua configurazione.

pangoly.com

that my ram is compatible with my mobo

Those aren't mine, those are what the Calc suggests for its "Safe" profile. "Safe", because it should be achievable for just about anyone.

Just set manual SOC to 1.1V, don't touch Dynamic offset for SOC, change DRAM to 1.4V, and just the timings inside the red box for now. See where that gets you, see if it stops the crashing.

And get both Zentimings and Ryzen Master so that you can show us your timings, minor voltages, procODT and CADBUS settings after you're done testing.

As for Command Rate (it's at the very bottom of the timings list in BIOS), make sure it's either set to 1T along with Gear Down Mode set to Enabled, or make sure it's set to 2T. Either should work. Just make sure Command Rate isn't 1T and Gear Down Mode isn't Disabled at the same time.

ok i ll try that now
but before i have to undo cpu ratio and vcore changes, so basically load default setting or i can leave these ones like i have set

 

[tabascosauz]

ok i ll try that now
but before i have to undo cpu ratio and vcore changes, so basically load default setting or i can leave these ones like i have set

I'm not sure what you're asking. It would probably be ideal to load defaults before proceeding? I thought you had only set DRAM voltage, enabled XMP, and not touched anything else.

Also, are you completely sure that your 4.3GHz @ 1.3V is actually stable? ie. an hour or more of Prime95 Small and continuous runs of Intelburntest? Because if your CPU overclock isn't stable, then you'd just be chasing ghosts with the RAM because it wouldn't be the reason why you're crashing.

 

[leo 10]

Just set manual SOC to 1.1V, don't touch Dynamic offset for SOC, change DRAM to 1.4V, and just the timings inside the red box for now. See where that gets you, see if it stops the crashing.

manual soc to 1.1 you mean vcore soc??
inside advanced timing control i don t have tCl value i have tCWL , is that one?? or tcl is cas latency?
i found all the other these are my two doubt..

I'm not sure what you're asking. It would probably be ideal to load defaults before proceeding? I thought you had only set DRAM voltage, enabled XMP, and not touched anything else.

Also, are you completely sure that your 4.3GHz @ 1.3V is actually stable? ie. an hour or more of Prime95 Small and continuous runs of Intelburntest? Because if your CPU overclock isn't stable, then you'd just be chasing ghosts with the RAM because it wouldn't be the reason why you're crashing.

yes i was asking that because of the vcore and cpu ratio changes
4.3 ghz and 1.31 V i m using this for a while to render benchmarks and game without crash...i start crash when i set ram to 3600
i start a render and it crash at the middle of it, with ram at 3200 i can do several render and hours of gaming but i m not scure that is stable

so now i m in this spot

 

[tabascosauz]

manual soc to 1.1 you mean vcore soc??
inside advanced timing control i don t have tCl value i have tCWL , is that one?? or tcl is cas latency?
i found all the other these are my two doubt..

yes i was asking that because of the vcore and cpu ratio changes
4.3 ghz and 1.31 V i m using this for a while to render benchmarks and game without crash...i start crash when i set ram to 3600
i start a render and it crash at the middle of it, with ram at 3200 i can do several render and hours of gaming but i m not scure that is stable

so now i m in this spot

Yeah. Now go to the bottom and make sure either:
- Command Rate is 1T, and Gear Down Mode is Enabled, or
- Command Rate is 2T, and Gear Down Mode is Disabled

Disable Power Down Mode as well. Then start testing.

Once you're in Windows, send a screenshot of Zentimings, and one of Ryzen Master (specifically CPU on die termination).

 

[leo 10]

Yeah. Now go to the bottom and make sure either:
- Command Rate is 1T, and Gear Down Mode is Enabled, or
- Command Rate is 2T, and Gear Down Mode is Disabled

done the first one

Disable Power Down Mode as well. Then start testing.

where is this??

 

[phill]

so i still don t know if cpu clock ratio 4.3 and cpu vcore at 1.31 are safe settings and if there are other change to be made??
the core boost to 4.5-4.6 ghz for really short time so i don t think that loosing single core performance is really a big deal
but with these setup render time decrease is appreciable...
so should i stay with these setup and maybe try lowering vcore if i can, and try 1.45 dram voltage with xmp set to 1 (3600) ??


i ve allready tryed 1.40 dram voltage and system shut down under load.
sorry but using calculator and change timings seems a little bit complicated for me...this is the first time i
assembled a pc and mess with bios...

If you are using XMP and the RAM is causing the crashes then check the RAM, it could be faulty or did you check with the qualified RAM list? There's no way you should need more volts than XMP gives it to get the system running at 3600.

 

[leo 10]

If you are using XMP and the RAM is causing the crashes then check the RAM, it could be faulty or did you check with the qualified RAM list? There's no way you should need more volts than XMP gives it to get the system running at 3600.

i didn t check but i have a Mobo : x570 aorus elite and ram are 2 ddr4 tridentz neo 3600 16gb
are they incompatible with each other?
i found on this page

Memorie compatibili con Gigabyte X570 AORUS ELITE
Non preoccuparti della compatibilità con Memorie. La nostra lista di componenti compatibili raccomandati per Gigabyte X570 AORUS ELITE, troverai sempre il prodotto perfetto per le tue esigenze.

pangoly.com



that my ram is compatible with my mobo

Disable Power Down Mode as well. Then start testing.

can t find this !!

 

[phill]

manual soc to 1.1 you mean vcore soc??
inside advanced timing control i don t have tCl value i have tCWL , is that one?? or tcl is cas latency?
i found all the other these are my two doubt..

yes i was asking that because of the vcore and cpu ratio changes
4.3 ghz and 1.31 V i m using this for a while to render benchmarks and game without crash...i start crash when i set ram to 3600
i start a render and it crash at the middle of it, with ram at 3200 i can do several render and hours of gaming but i m not scure that is stable

so now i m in this spot

I noticed the timings weren't the same as the XMP settings, so it might be worth to change them and then tweak them further should you need/want to

 

[leo 10]

ok for now pc doesn t crash while render but cpu stay under 4.00 ghz and render time is high
now i try cpu ratio 4.30 and cpu vcore 1.31
still can t find how to disable power down mode...

now with these new settings cpu ratio 4.30 and cpu vcore 1.31 crash under load
trying 4.20 and 1.298