Hey guys, I faced an interesting and annoying problem.
I have a 6 RX570 rig (5 samsung 1 hynix+elpida)
I successfully managed to get 29.5MH/s 1100/2000@838mV.
First minor problem, I couldnt lower the voltage below 838mV nomatter if I set it to 800, it stuck on 838 or higher.
But my main question is, I tried to increase the memory clocks, I set them to 2100 and only the card's (which one is connected to a display) hashrate increased to +31MH/s, all rest of the cards Hash did not changed. In afterburner I seen the clocks were applied to all cards, tried Cryptonight algo and the OC worked there so it shouldnt the cards.
I tried to increase voltage, Core clock, powerlimit, different versions of Claymore, different OC apps (Claymore too) nothing helped. I restarted the pc, the miner, used the numbers to disable the cards nothing.
What drivers are you running? Latest? Because then Afterburner wont work anyways.
You can overclock trough Claymore or OverdriveNTool.
However in my 12GPU rig i had to fine tune all cards seperately, since not all of them work on the same overclock. Some are @ 2200 and some @ 2020.