Post
Topic
Board Mining (Altcoins)
Re: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v9.7 (Windows/Linux)
by
NavyCuda
on 26/07/2017, 19:54:57 UTC
Does anyone know the maximum safe voltage I can run HBM2 at?  I seem to have hit a wall at 1100MHz @ 1050mV.  I've risked as high as 1200mV but only managed an unstable 1125MHz on the memory clock.  1100 @ 1050 is rock solid for mining.

Your not changing HBM2 voltage. If your changing memory voltage via wattman your probably not doing anything(if anything your changing VDDCI). Vega's HBM2 voltage is locked at 1.35v for highest state. There is not much headroom to over volt it much more, since they are already over-volting it from the HBM2 spec of 1.2v.

I did notice that wattman said 1000mV when I switched it off of auto.  I did need to go from 1000 to 1050mV to get 1100MHz stable, though it's possible other factors effected my results.