Problem with this PCI-Express is Nvidia have until later this year only got a bridged form of it (called HTI or HCI) which means an agp speed card with a pci express socket. ATI have it native (jon - thats correct, do a search on google :p).
Basically pci express offers 4x the bandwidth of agp 8x, i believe, and you can have 2 or more pci express sockets on your pc, using 2 or more graphics cards = ULTRA GAMING :D
the cards in conjunction with HL2 are ATI 9600xt, 9800 pro, xt. I think doom 3 is better on nvidia, tho I dont know.
Post Edited (03-02-04 00:20)
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She says brief things, her love’s a pony
My love’s subliminal