Corsair 675MHz DDR2 Review
 

Surely, by now you've all heard that DDR2 currently doesn't offer any compelling performance gain worthy of a serious upgrade involving a new DDR2 motherboard and PCI-Express video card. I emphasize "currently" because it probably won't be long before DDR2 really starts to show off its true muscle as newer, lower-latency, and faster modules are developed.

http://www.bjorn3d.com/read.php?cID=703