Hey ktmazter, you hit the nail on the head.
But yea stay with a good brand of pc 6400 (800) ram. If you're really looking for some good stuff check out the ocz reaper memory (EPP model, great if you got the 680i chipset on yur mobo) the EPP lets your timings automatically get set to 4-3-3-15. And if you overclock at 4-4-4-15 I've seen guys hitting the 1000fsb mark on these bad boys. And for 110$cdn, notta bad deal to. So gives you head room to. But the memory you got is fine if all you wanna do is hit 400 buss on your board.
Anywho heres the link to that memoryhttp://www.overclockercafe.com/Reviews/memory/OCZ_Reaper_PC2-6400/