Is it better to flash vega 56 with 64 bios or stay with original one ( VEGA 56 reference BlowER ).
Some of them are already hard to get stable ( 1407clock /900 mem : 930 mV for the bad ones)
Ive had all my ref V56 flashed to V64 for such a long time now, I honestly cant say much about stock 56 bios with Samsung HBM.
I think you should try it though. The mem voltage is actually hardcoded in the bios, the names in eg OverdriveNTool are misnomers. The V64 bios drives mem with a higher voltage, so you might have a better (mem) experience. Just save the old bios and you can revert in a matter of minutes.