I'm upgrading the motherboard, cpu, and memory in my computer box and would like anyone's input on the AMD quad core processors (Phenom) versus the dual core (X2). I notice that the clock speeds on the Phenoms are around 2.2GHz while the X2s are at 3.0GHz and up. I have read in other forums that many users preferred the single core over the dual core (years ago) as the latter had some compatibility problems in MS Windows - not sure if the quad core has any limitations over the dual core. I use the PC for general home computing (in Vista) along with occasional light photo / video / audio processing and light gaming. The X2 combos I’m looking at are in the $120 - $150 range while the Penom combos are in the $140 - $180 range. Any thoughts?