Xfx 7970 help

Hey guys. I decided to OC my xfx 7970 Double D card today. First things first. Ther is AMD Vision and AMD Catylist. Both of them seem the same to me. But anyways lets say your in Vision, and you go to GPU overdrive. There you see a bunch of things you can tinker with. I did tinker and change the GPU clock MHz from 1000 to 1050, and the memory clock speeds to 1430. I clicked apply and that was that. So is that it? its jsut magically OC now.

Yes, "its jsut magically OC now."