Nvidia doesn't have 8800 GTS 320MB on its roadmaps any more and it looks that the company plans to entirely replace this product with new and cheaper to produce Geforce 8800 GT 512 MB card.

Performance wise we would expect that 8800GT lose from 8800GTS but we still don't know enough about the performance. It will be very tight.

The 8800GTS 640MB version remains and this is the card that fights Radeon HD 2900XT and it wins in this scenario.