Which ntegrated GPU is best AMD HD Graphics 7520 or Intel HD 4000 graphics ??

I don't know if the HD4000 is slower than the 7520, but I can tell you that the HD4000 is not good for gaming. Can't run a simple game of FIFA13 without crashing. From what I've heard, the integrated amd graphics processors fare much better than the intel ones.

Are you talking about the A-8 or A10 series processors from AMD with the FM2 socket?