that rig is very old....... vista will struggle
but this will run Aero....as johngalt said its not a bad card
ATi Radeon X1650 AGP 512MB DVI Graphics Video Card on eBay, also Graphics Video Cards, Graphics, Video TV Cards, Desktop PC Components, Computing (end time 18-Aug-08 14:25:06 BST)
this card also requires no external power source
& is far better than the 3 you listed
