What kind of computer?

[Hitman]

The fact that its a 64bit OS does not make a difference on the amount of RAM it uses

it does, because an 64bit OS emulates every 32-bit task (which are almost all tasks) to an 64bit task by simply adding 32-"Zero's" behind the command, so that it is a "fake" 64bit task.

That doesnt take a lot of Ram, but still, it takes some