Hello,

I have a 6 nitro+ Vega 64 Limited Edition mining rig, each card is doing 51+ Mhs, but it happens time to time, that randomly, 1 card, (or more) from the 6, drops its hashrate for like 30 to 60 seconds and then goes back to 51mhs.

I am using Claymore 14.7 with -strap 4 option.

My overclock settings are :

GPU : 1408 Mhz 905 Mv;
Memory : 1100 Mhz 900Mv

Fans are set at 90% and the power draw is around 155W.

I think my overclocking is not stable. Or maybe some settings are wrong in the Bios? (motherboard : MSI Z270 A PRO)

The drop can be down to 49 or 44 or even 42 Mhs. And when the drop happens the power draw is reduced to like 140W.

Any one can assist? Your help would be very appreciated.