bigjohnny :
just curious i currently have a seagate 1tb barracuda 7200rpm hard drive
Is it necessary? No.
Does it make the whole system run and feel faster? Yes.
Specifically, for games...your level load times will decrease. Maybe a LOT.
FPS change? Not so much.
But if you can be first (or at least not last) into a new level...all the better for you.