Re: Any word on amd vega hash rates?

Thanks for this. I've been playing with the power settings with a Sapphire RX Vega 64 Liquid Cooled and got 1990.7 H/s stable @ 0.875 VDDC. Couldn't get power draw at the wall because I need a kill-a-watt thing.

About 145W. More details in the next video this weekend.

Highly doubt if it is stable.
One of my cards needs 910mV voltage (gpu-z) to run 1408/1100 stable, other can handle 900mV. If yours is stable - you are the silicon lottery winner ))

It still running in the same session and I don't see any speed fluctuations, it seems stable. As a matter of fact the pool is reflecting my hashrate very well too. Try lowering the HBM voltage to the same voltage as Vega 56 version. I think this is what did the trick.

True HBM2 voltage can be changed only via bios - it is 1.25 for Vega56 and 1.3+ (don't remember exactly) for Vega64. So called memory voltage in Wattman and OverdriveNtool memory profiles can be either mem controller voltage or some other staff voltage or even can mean nothing ))