I have a Dell Optiplex GX280 with two DIMMs installed, 2GB each. Properties shows 2.99 GB ram. Why? Please do not post your @mail (that way u are helping to spread the spam), u will be automatically notified if some one post fresh line in your thread. Thanx : )
To use more RAM than 3.25GB, u really need x64bit windows.
And integrated graphics will allocate your RAM too.