Post
Topic
Board Mining (Altcoins)
Re: Any word on amd vega hash rates?
by
ninjam
on 20/11/2017, 11:37:40 UTC
I still can't reach the power draw of 130w for vega 56 like hellae

The reg mod for the flashed vega 56 is causing gpu core to run at 1410mhz and even if I reduce it to 1210mhz it still draws 977w at load for 4 cards. Idle is about 130+w.
I'm using the common setup of g4400, 4 Gb ram.

Another thing is, i can't change the hbcc ram level at all. The slider is Greyed out and stays at 97xx mb.
Nobody can. Cards use power on idle also, and that is not accounted in this 130w.
You should check VDCC voltage, it should be bellow 0.9V. Out of 4 vega 56 cards on one card it stays at 1V while other are bellow 900mV for the same settings (Vega_64_Reg_GPU_0000-1100HBM.reg). It's just silicon lottery I guess. Tried this card alone and get the same result. I can make it go bellow 900mV, when using MorePowerVega64_142_Modded_fix.reg file but then I get about 200H/s less (around 1700) then other 3 cards (1900+).
4GB is not enough to activate HBCC. HBCC is not important, I disabled it. Just reset cards before starting miner.