Here's the difference between 32bit and 64bit, in an analogy....
Bike = 32bit
Car = 64bit
To travel to the next block, the bicycle and car will arrive at almost the same time.
To travel 5 miles across town, the car will whip the bicycle's ass.
So the bigger and more intense a system operation is, the better 64bit will be. In smaller stuff, you'll see no difference between 32 and 64. This is the way it applies to 3D animation, from my experience -- so I'd guess its that way for most computations.
You can never have a computer that is too fast or too efficient. Go 64 and don't look back. I've been using it for 5 years.
__________________
|