I have just built a new rig, and ive gone for Dual core again ..E6750 it is in a Sugo SG01 case, so i wanted something that runs quite cool, and quiet and this machine is for gaming only (i have my mini-ITX system for everything else) so i couldnt see the point in getting a quad core. If your happy with it then its all that matters. depending on what you use it for you probarbly wont see much difference, as quad core isnt utilised much at the moment