They are bios undervolted -150mv. I mined without problems equihash (before the fork), ethash, etc. It starts mining and then the driver crashes. I guess the UV is too much...
My rig on 6x390 mined without problems 144/5 24/7 with 6alpha2, H/r: 33-36H/s per card
Undevolt GPU customize until the frequency is stable.
Lolly, thank you VM.
Curious what your previous hash rate was and what coin are you on? Thank you
BTG/BTCZ
1075/1500
18.3.4
on old 0.38 H/r was ~17 per card
on 0.5stable ~26
on 0.6alpha1/2 ~35
decrease PL until the core frequency in AB starts to swim, after do small increase.
core volt -19 on sapphire
core volt -37 on MSI
PL -12 on all
stable
PS on undervolt -100mV bios my card very unstable. I use orig bios.