I gonna get a p-4 @ 2.4Ghz and I would like to know which type of memory would be the best for overclocking ? I'm not goiong to go beyond 3Ghz so what would give me best performace "DDR" or "RDRAM"... I know there are differenct types of DDR, but are the different types of RDRAM ? whats "1066"RDRAM?