I see this used in a lot of setups. I'm using dual 7970s, should I add -k diablo? What does it do? ^_^;;

SECOND QUESTION:
I use --gpu-engine 1155. It is not dynamic. When I try to use a static memclock --gpu-memclock 350, it doesn't work, and sets it to 1375. Why does it do this? ;-;