The Gigabyte Vega 64 Gaming OC is a really wierd card.
So I made some progress and am getting just over 50MH @ 170W ATW. Here’s what I did:
Used this BIOS:
Its the July 2019 version of the BIOS
Used these tweaks:
amdmemtweak --CL 20 --RC 37 --RP 17 --WR 14 --CWL 8 --FAW 12 --RAS 20 --REF 65535 --RFC 248 --RTP 5 --RRDL 6 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 12 --RCDWR 12
Used these OC:
Core: 1000
Core Volts: 800mV
Memory: 940
Aggressive Undervolting: On
I get this in Hive:
I measured 170W at the wall by measuring the rig with and with out the card inserted.
So while the software reports much higher than the other Vega cards I have it seems that the power ATW is very close to the other cards. It seems the software power reporting is closer to ATW than it is on other cards.
Also taking the memory above 940 was a no go for me. But maybe better tweaks can help there.
HTH!