Quote from: kibatronic on July 01, 2019, 11:32:56 AM

Quote from: seefatlow on July 01, 2019, 06:23:07 AM

Quote from: netmebtc on July 01, 2019, 05:00:55 AM

.....

Hello mate, very appreciate for your guiding.
Unfortunately, I set the core 1300mhz and mem 975mhz and voltage below 820mv, then vega does not work, it is easy to crash.

@netmebtc
I can't do <850mV voltage either for my Vega56s even though my settings and ppt tables are the same. Think this has something to do with the temperature are cards are running at. Like yours, my cards run at temp >60C. Just think this might be the reason why we can't run at lower voltages. This is also the reason why the mem tweak settings don't work on my cards either. Setting my REF higher than the default value will crash my cards.

Did you make sure to disable all other powertstates in Overdriventool except P5?

If you flash a Vega 64 BIOS you will also get a higher voltage to the HBM adding stability.
[/quote]

I done it. I just change the SOC clock to 1028Mhz, and set voltage to 810mv, then all vegas working normal.

GPU_P0=852;800;0
GPU_P1=991;800;0
GPU_P2=1084;800;0
GPU_P3=1138;800;0
GPU_P4=1150;800;0
GPU_P5=1202;800;0
GPU_P6=1212;810;0
GPU_P7=1337;810
Mem_P0=167;800;0
Mem_P1=500;800;0
Mem_P2=800;810;0
Mem_P3=975;810
Mem_TimingLevel=0
Fan_P0=30;11
Fan_P1=50;12
Fan_P2=55;25
Fan_P3=63;48
Fan_P4=75;78
Fan_ZeroRPM=0
Fan_Acoustic=2400
Power_Target=0

But with these setting, the power consumption on wall is still too high at 1400w, It seems that only lower the core clock could lower the power consumption.

By the way ,I have not used AMD Memory Tweak tool