Would I benefit with anything else by going 64 bit even though 32 bit can support my RAM?
Is it more optimized? Better for gaming or anything like that?
Well actually, 32-bit Windows 7 uses less than 4GB of RAM, more like 3.5GB by some estimates. 64-bit will be able to use all of it.
And if you ever want to add more RAM, 64-bit will be able to support it.
And also, 64-bit Windows 7 handles memory more effectively than its 32-bit cousin. At least, that's what Microsoft says.