Legion Hardware has done a very thorough test about the performances of DDR memory type and the new DDR2 memory type. The results were very interesting. Even though DDR2 has twice the bus speed of DDR, it still is reletivly slower than the DDR Ram type, mainly due to bad latency problems. According to Legion Hardware the DDR2 will not dominate DDR untill DDR667 will be released.
More information at Legion Hardware
