Gaming PC Memory!!

Hi people! im currently got a list of componets im gettin for christmas! im planning to o/c! i need some suggestions for the best memory avaliable i want the most stability as gaming is my number priority !

Intel Pentium 4 2.6C 800FSB CPU - £140
Asus S478 Intel 865PE ATX A L R (P4P800) - £110
Sapphire Radeon 9800NP 128MB - £225
Western Digital Raptor 36GB SATA150 - £100
Enermax 550W PSU - £125
Creative Labs Audigy 2 ZS PCI - £85
Sony 19" LCD Monitor - £500

So far i'm leaning towards this mem : OCZ Copper 2x512MB 4000EL 3-4-4-8 I want dual channel and fst timings !! thnkss!

Its not about using ur cpu's speed! its knowing its there! ! ! ! !