Now AMD has finally joined Intel in leaving behind DDR for DDR2, the market for overclockable DDR memory has almost collapsed completely. All memory manufacturers are geared towards DDR2 at the moment, and particularly towards memory rated 800 MHz or higher for the upper reaches of the market. This is because the memory controllers within AMD's dual core Socket AM2 processors as well as the Intel 965 and 975 chipsets support this DDR2-800 standard. Overclockers will always try to squeeze as much performance as possible out of their memory, be it through higher clockrates or lower latencies.



Link: Hardware Info