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Old 22-08-2020, 09:47 PM   #4936
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Those temps look ok. Btw. How much did you undervolt ? I tried 0.05 yesterday, not much difference to temps though, and at the same time lost like 80 cinebench points
you got turn on pbo?

set values manually and should see increase results.
iirc is in 2 places
nbio common option/xfr. set ppt: 280 edc: 200 tdc: 200
amd overclocking, autooc +200mhz
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Old 22-08-2020, 10:17 PM   #4937
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you got turn on pbo?

set values manually and should see increase results.
iirc is in 2 places
nbio common option/xfr. set ppt: 280 edc: 200 tdc: 200
amd overclocking, autooc +200mhz
Got it. I read that once you set stuff at the AMD oc submenu, that you can't change it after aside from a bios pill of sorts. Valid still ?
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Old 22-08-2020, 10:20 PM   #4938
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You doing static OC or what? I was referring to negative voltage offset.
I am using the same mobo as you but on rev 1.1. I left my Vcore to "Normal" and offset at -0.0685. Performance was on par with Vcore on Auto and load temps went down by at least 7degrees.

I must say YMMV due to the silicon and you are haivng 3950X where I am using 3700X
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Old 22-08-2020, 10:23 PM   #4939
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Got it. I read that once you set stuff at the AMD oc submenu, that you can't change it after aside from a bios pill of sorts. Valid still ?
ya heard of it, so i never touch settings in amd oc, except for the autooc +200, which cannot be found eslewhere
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Old 23-08-2020, 10:26 AM   #4940
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I am using the same mobo as you but on rev 1.1. I left my Vcore to "Normal" and offset at -0.0685. Performance was on par with Vcore on Auto and load temps went down by at least 7degrees.

I must say YMMV due to the silicon and you are haivng 3950X where I am using 3700X
Actually yesterday I did a test... No difference in speeds and benches with the offset but max temps reduced by 1.5c. idle also 1.5c. maybe I'll try ur offset value.

On a side note, my trident 3200 rams:
1. Clock is running 158x MHz. Never reaches 1600 even on load. Bios setting ? Fclk is 1600 so that's ok.
2. Trc value. It's now 78 but my xmp is 45 I think. Safe to put to 45?

EDIT: I tried your offset value and I got a bump of around 60 CPUZ points and around 50 CB R20 points. Was able to get a good 35-40mhz more clocks as well.

Temps are also down by a good 1C

Last edited by AnTiLooP; 23-08-2020 at 11:52 AM..
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Old 23-08-2020, 11:53 AM   #4941
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ya heard of it, so i never touch settings in amd oc, except for the autooc +200, which cannot be found eslewhere
think i will not play with that, or PBO. Happy with the processor the way it is
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Old 23-08-2020, 11:58 AM   #4942
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Anyone knows if setting only negative voltage offset without OC (others on auto) will lower the performance level?
Because read online that some people said it will.
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Old 23-08-2020, 12:01 PM   #4943
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Anyone knows if setting only negative voltage offset without OC (others on auto) will lower the performance level?
Because read online that some people said it will.
I'm playing with what you have just described.

1. Voltage offset : tried Neg 0.05 then 0.068
2. No Auto OC
3. PB set to Auto, PBO off
4. Memory XMP
5. Everything else Auto

@ neg 0.05 - all I saw was 1.5C reduced idle and load temps
@ neg 0.068 - Temps dropped by a further 1C, small tiny performance boost but consistent. (CB, CPUz, clock speeds all up by a tiny notch).

I'm most amazed by the temp reduction to be honest. Right now, I can idle as low as 38C...

EDIT: Just as I was type this PC BSOD HAHAHA. So now I'm going with 0.0625

Last edited by AnTiLooP; 23-08-2020 at 12:06 PM..
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Old 23-08-2020, 12:42 PM   #4944
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think i will not play with that, or PBO. Happy with the processor the way it is
just do it!
pbo is no different from xmp, probably safer as regulated by the cpu parameters.

pbo + ram oc can extend around 10% more perf.

as for your 158x ram is because you tun on svm in bios for vm purposes. iirc, it makes your pc boot up in virtual mode and bclk will always change at each boot, so results are not constant, could be why you saw the tiny 'boost'.

i also on svm, same thing.
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Old 23-08-2020, 12:45 PM   #4945
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just do it!
pbo is no different from xmp, probably safer as regulated by the cpu parameters.

pbo + ram oc can extend around 10% more perf.

as for your 158x ram is because you tun on svm in bios for vm purposes. iirc, it makes your pc boot up in virtual mode and bclk will always change at each boot, so results are not constant, could be why you saw the tiny 'boost'.

i also on svm, same thing.
its ok, i think i stick with PB2 for now, save the testing of PBO for another day. I need some entertainment. hehe

good shout on the SVM. Yes, i have that on.
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Old 23-08-2020, 12:59 PM   #4946
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Interesting.

I just tried undervolting my 3700x by -0.075.
Noticed that my cpuz score increased a little.

But I read that undervolting by too much can cause lower performance known as "clock stretching".

Last edited by Beefsteak; 23-08-2020 at 01:13 PM..
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Old 23-08-2020, 01:25 PM   #4947
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Interesting.

I just tried undervolting my 3700x by -0.075.
Noticed that my cpuz score increased a little.

But I read that undervolting by too much can cause lower performance known as "clock stretching".
Yup, that’s true. What are you getting for R20 with that negative offset?

I am getting between 4960 lowest and the highest I got was 5002 on MC, 510 on SC.

It boost to 4.150Mhz all core for R20 for MC.
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Old 23-08-2020, 01:42 PM   #4948
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Yup, thatís true. What are you getting for R20 with that negative offset?

I am getting between 4960 lowest and the highest I got was 5002 on MC, 510 on SC.

It boost to 4.150Mhz all core for R20 for MC.
Did you do any negative offset?
I'm running running the cinebench test now.
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Old 23-08-2020, 01:53 PM   #4949
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Did you do any negative offset?
I'm running running the cinebench test now.
Yes. -0.0685. Manual PBO
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Old 23-08-2020, 02:16 PM   #4950
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Yes. -0.0685. Manual PBO
What settings are you using ?
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