I have a couple of computers at home but my primary machine is a DELL desktop running Vista. This is a dual-core machine with 4 GB of RAM but it ran sloooooooooooowwwwww. So I just upgraded the machine with a new 500w power supply and a NVIDIA GeForce 8800 GT video card. The NVIDIA GeForce 8800 GT is an amazing video card that’s SLI ready with 112 stream processors and a 256-bit framebuffer interface running at 900MHz, DirectX 10, PCI Express 2.0 and the second generation NVIDIA PureVideo engine with full acceleration and post processing for HD DVD and Blu-ray movies.

Here are the screenshots of the Performance Information and Tools screen with the before and after Windows Experience Index number. Guess I need to upgrade the processor next.

The power supply I chose was the PC Power and Cooling PPCS500D Silencer.