Counter-Strike: Source Benchmarked
 

The R420 based cards that we saw were able to give the best performance at high resolutions with Anti-Aliasing and Anisotropic Filtering enabled, and therefore I do have confidence in saying that the ATI Radeon X800 XT Platinum Edition will be the fastest graphics card for games based on the Source Engine, particularly Half Life 2 and Counter-Strike: Source

http://www.vr-zone.com/?i=1181&s=1

from firings squad, these are benchmarks at the unholy resolution of 2045*1536 with 4*aa and 16*af!!!!!!!!!!!!!!
holy cow, when I overclock this card, and strap it on the fx53 Oc-ed this will be playable...