Well ive got a Leadtec Winfast A280 TD Vivo Card which is a 128 meg Geforce 4 TI4800SE GPU card and have found it to perform excellently. My fps increased and 3dmark tests improved dramaticly. If i remember rightly i brought it from www.overclockers.co.uk for about £150, and for that money its one hell of a card
Well I've got a Leadtec Winfast A280 LE Vivo Card TI 4200. Easily clocks to 300/600 with Leadtek's own software. Which is almost TI4600 speeds. And they stay on top of their drivers, which do appear to be slightly tweaked over NVIDIA's reference set. Plus their WinFast software will tell you everything you might want to know and more.