bit-tech just published a comparative review of AMD's ATI Radeon HD 2600 XT GDDR4 and Nvidia's GeForce 8600 GT

We've evaluated performance across three resolutions in six games against six other cards. Additionally, we've also tested HD video playback with both Blu-ray and HD DVD discs and evaluated power consumption. If you could post a link on your site that would be very much appreciated.

AMD ATI Radeon HD 2600 XT GDDR4 vs. Nvidia GeForce 8600 GT Review