Your system is gonna be old in a few months, even if you buy DDR3.
Wouldn't buy DDR3 at this moment (it's to expensive and doesn't give that much more preformance) I think its better to buy some more DDR2 memory
If you want to stick to the X38 you can always buy one that supports DDR2
- Asus Maximus Formula
- Abit IX38-QuadGT
But i would personaly buy a P35 board
Your psu is going to be overkill if your only gonna use one gfx
buy the 8800GT or new GTS ^^^^^^
Why do you buy the Q6600 if youre gonna change it next year?
would buy low dual core if youre going to upgrade in a few months