better GFX. I have one on my desk and would love to be able to play games... Don't want an iMac, don't need a MacPro, already have a macbook from 2008 which do

better GFX. I have one on my desk and would love to be able to play games... Don't want an iMac, don't need a MacPro, already have a macbook from 2008 which does its job...