I'm using Windows 7 SP1, 64-bit, and the system only uses 3 GB out of the 4 GB I have.
Why? How I can make it use more?
While monitoring my system memory, I see I always have ~1024 MB free even when I know the system needs much more memory because I "fell" the paging when re-accessing an application after 15 minutes.
I'm now with 4 instances of VS10 open with really big solutions; Google Chrome, and Internet Explorer 9 are open, each with a few tabs; OutLook is running, and there are few more small applications running at the same time.