...other about my video chipset.? 1.) I have 512 MB of RAM physically installed on my computer. Yet the system diagnostics only show me as having 504 MB. What is making those other 8 MB unavailable, and how can I change that?2.) My computer is a pre-built Compaq Presario SR1250NX, and apparently I don't have a video card per se, but some kind of built-in Intel chipset. It's the Intel 82915G/GV/910GL Express Chipset, specifically. I can't seem to find any way of analyzing or comparing this video chip to known real video cards, such as NVIDIA. What I want to know is how to determine, based on this mysterious video chipset that I have, whether or not my computer meets the requirements for various games. The game's requirements will say something like, "ATI X800 series, Nvidia GeForce 6800 series, or higher video card." How can I determine my chipset's equivalency with these standard cards?