Check out this article on Toms (is more detailed than CPU boss). Maybe by chance they even tested your games:
http://www.tomshardware.com/reviews/gaming-processor-frame-rate-performance,3427-4.html
In my opinion, intel wins there... and integrates a graphics card.
Only exception: you really (I mean really) sure you do not need a graphics card (even for urgent work when your GPU died because of excess gaming....that happened to me) AND you want to overclock your CPU (multiplier is locked on that intel), which in turn makes the AMD more loved by many gamers who love to overclock...
OK this is an opinion, but the link is an "unbiased" review...