ROM undervolt the RAM, so they are more power efficient for mining ... I don't know if they can handle the 500Mhz anymore after the voltage reduction.
I will overvolt with afterburner..
Correct me if I'm wrong, I don't think the RAM will increase its voltage with clock increase through Afterburner.
Only the GPU clock does.
correct.. but if i push ram clock do 325 I must do +30/40mv on core to run stable. I don't know why