No problem, thanks for stopping by.

Firstly, processors these days are so powerful that it is most likely going to be relatively insignificant when it comes down to making your decision. Gaming relies so heavily on GPU rather than CPU that quite often your bottleneck occurs in your graphics card long before you push the limits of your processor.

To answer your question, both are definitely adequate, the following excerpt from a PC Magazine article explains it clearly:

"With graphics performance largely down to the graphics card, there's little difference in gaming performance between the two. Occasional differences of one or two frames per second do occur however, and usually in favour of the AMD-based PC."

http://www.pcworld.idg.com.au/…..ore_i5_750/

Of course, this is a better Phenom than you were looking at, but the core is the same. If it were up to me, I'd opt for the Core i5 if I were doing alot of work based processes as well as gaming – otherwise, for strict gaming, I'd opt for the Athlon just to cut costs…

Hope this helps.