We're always talking about how the faster your RAM is the better and such. Then there's this deal with RAM:CPU ratio when OC'ing. Now I'm wondering whether the size of the RAM or the speed matters the most. Because I got this gateway and everything in the motherboard's awesome, except the RAM. It's DDR, and it came with 1GB clocked at 400MHz. Now, I know there's probably a huge difference from this when compared to DDR2 @ 800MHz, but how much of it is really noticeable?