This thing comes clocked at 1.8 GHz. Does anyone know what's a good overclock for it. I've turned it up to 2.1 GHz ... and it doesn't really make that much of a difference I don't think. Also, what about the AGP speed. It was set to 66 ... and I turned it up to 70 ... I suppose it's also multiplied? That would make it a jump from like 594 to 630 MHz I guess? Not really sure about that one.