Paddon

Do i need this voltage mod to be able to overclock ? tried over clocking on afterburner but when i click apply the values changes back to default :S and i cant download this yet without 5 comments lol ( thats 1 down ) but if anyone can help me with my overclocking issue would be great !

Hey everyone, im having real problems overclock. I've watched many videos on youtube. where they use afterburner, but when i set the values to the same as them and click apply it reverts to the original value, ive tried saving before apply as well and i just cant figure out why its not working ! lol any help please