The guys at TweakTown take a look at the current state of DDR3 gaming performance & see if it actually has anything to offer over 1066MHz DDR2. The current price & latencies of DDR3 definitely aren't making a very solid case for adoption right now.

"Technically speaking, in pure megabytes per second, it is fast, thanks to the attainable speeds 1500MHz double data rate and beyond which can be achieved, without too much effort. However, the big issue with DDR-3 memory right now is the fact that its latency is high, much higher comparatively to more finely tuned DDR-2."