If you have enough RAM, the most likely hardware culprit on a slow-moving Vista machine is the video card. You need a fairly high-end card to run Aero at all, but some vendors are selling computers with graphics cards that run it badly. You can find out whether your video card is the bottleneck by checking your Windows Experience Index (WEI) score from the Performance Information and Tools applet in Control Panel.

Check Windows Experience Index — your graphics card might be holding back Vista’s performance.

The onboard video adapters in most systems aren’t powerful enough to run Vista properly. If you want to run Aero and be happy doing it, get a card that’s Vista Premium Certified. As with system RAM, the more video RAM you have the better, and if you want to play Vista games, be sure your card supports DirectX 10.

Title: Increase Vista’s Performance - Get a good video card
Author: Debra Littlejohn Shinder