I have

3gb PC3200
AMD Athalon 64 3700+ (single core)


Would it be better for me to run Windows 7 32-bit or 64-bit? I primarily game on this computer.

I know it's more forward thinking to move up to 64-bit, but I plan on just building a whole new rig entirely a year from now. Just wondering with my current set up if I should install Windows 7 32 or 64 for optimal performance?