Overclock your AMD Epyc

[evolucian911]

Anybody had an EPYC 7551? I would like to know what voltage readings you get stock at the different P States/ Clocks.

 

[leejo]

bro any mod or H11SSL-I bios 3.2?

 

[steev666]

Hi, I'm new to the forum, but it helped me see that it was possible to OC the EPYC processors, and I really couldn't be happier. However, I feel like there's a lot more headroom for these CPUs. However, I don't think the Zenstates tool works very well, or maybe I'm using the wrong one. I'd like to know if anyone has the link. The original link from which I initially downloaded the tool no longer works, and I don't know if it's updated since I have version 1.5.

I'd also like to take this opportunity to share my values. So far, I haven't been able to get above 3.5 on the 128 cores at a maximum temperature of 40°C. However, I've noticed some inconsistencies when activating the P-states. It seems that the maximum voltage is handled by P1, the multiplier frequency is handled by P0, and I'm not entirely sure, but the FSB seems to be handled by P2 or P3.

I've also noticed that with certain values, the The system crashes or is not applied, which makes me think that the HEX values could be arranged under a different pattern, or that perhaps the Zen app I have is not the correct one.

I should also mention that I have the original Supremicro H11DSi-NT BIOS in version 3.0
when i used with the modified version, it simply didn't matter what I tried, I couldn't get past 3.15 GHz and the sistem just crash.

These are my current values.

CPUs: 2
CPUID: 00800F12
Package Type: 4
P0 - Enabled - FID = 59 - DID = 5 - VID = 40 - Ratio = 35.60 - vCore = 1.15000
P1 - Enabled - FID = 99 - DID = C - VID = 58 - Ratio = 25.50 - vCore = 1.00000
P2 - Enabled - FID = 99 - DID = 10 - VID = 69 - Ratio = 19.12 - vCore = 0.89375
P3 - Enabled - FID = 99 - DID = 2 - VID = 40 - Ratio = 153.00 - vCore = 1.15000
P4 - Disabled
P5 - Disabled
P6 - Disabled
P7 - Disabled

And I have to say that I'm at 3.5 Gh at .9500V and with 1.0V according to CPU-X and no matter how much I take my voltage up to 1.2500V I simply can't get above 3.5, I've also noticed that the order in which the P-States are applied influences stability, if I activate P2, P1, P0, I get certain values, if I activate P1, P2, P0, I get others and P0, P1, P2, I get different speeds even on the bus, where I see differences in the bus from 50MHz, 75.5MHz, 125MHz, depending on the order of setting the PX-States

At the moment, when starting the system, I simply activate it like this:

sudo /home/user/Programas/Zenstates/ZenStates-Linux-master/zenstates.py --no-gui -p 0 --enable -f 59 -d 5 -v 40
sudo /home/user/Programas/Zenstates/ZenStates-Linux-master/zenstates.py --no-gui -p 1 --enable -f 99 -d C -v 58
sudo /home/user/Programas/Zenstates/ZenStates-Linux-master/zenstates.py --no-gui -p 2 --enable -f 99 -d 10 -v 69
sudo /home/user/Programas/Zenstates/ZenStates-Linux-master/zenstates.py --no-gui -p 3 --enable -f 99 -d 2 -v 40

I have a customized RL, so I'd like to see if I can get maybe 4GHz, and also to learn a little bit about it, since I've noticed that after a while, performance simply drops. It caught my attention that a user who uses a computer EPYC for gaming (like me, haha), has the same pattern, where after gaming for a while even though it marks the same hardware frequency, the general performance stagnates as if it were in energy saving mode

i share some screen captures

 

[steev666]

Anybody had an EPYC 7551? I would like to know what voltage readings you get stock at the different P States/ Clocks.

I got those:

Current P0: Enabled - FID = 64 - DID = A - VID = 5E - Ratio = 20.00 - vCore = 0.96250
Current P1: Enabled - FID = 60 - DID = C - VID = 63 - Ratio = 16.00 - vCore = 0.93125
Current P2: Enabled - FID = 60 - DID = 10 - VID = 69 - Ratio = 12.00 - vCore = 0.89375