[NewerthRoleplay]

Quote:

Originally Posted by UpSMaX But why does it say 3GB is usable btw i hate my pc

Because some of your RAM is allocated to the OS, also of course you can install a 64bit OS since you have a x64 based processor... Oh and on 32bit you're limited to 4GB max.. So it wouldn't really make any difference in programs.

Oh and if you're wondering why you're limited to 4GB RAM on 32bit. It's because 2^32 = 4294967296, so therefore a program can only reference 4 billion bits of data (4GB). And on a 64 bit OS you can reference 2^64 which is an unholy amount of theoretical space for a computer to use.

tl;dr - Yes