Well I didn't understand it at all... How should I stop the CPU?

Hello World, I mean Bitcointalk-community.

I have a question to you:

I use GPU for Mining now, after I saw I get only (8x4,0GHz=)5,5MHash with CPU

Now I have my AMD 6570 working and am only getting 60 MHash (2 worker = 30 MHash/Worker)
I've seen I can get more... well, i gonna OC my GPU soon. Will it help? And how do I get more MHash/s?

Thank you!