It has been almost five years since I reviewed a Corsair product. In that time, ASE Labs and the industry have evolved. Five years ago it was DDR that was the memory of choice and DDR2 wasn't even on enthusiast's tongues. Fast forward to 2008 and we've got DDR3 just coming on the market. DDR2 is still alive and is the king of value right now. Corsair's 4GB XMS2 PC2-6400 kit is the subject for review.