Assassin's Creed PC benchmarked - DX10 faster than DX9
 

PCGH.de did some benchmarks with the gold master of Assassin’s Creed PC. To our surprise, the Phenom 9700 performed very well. So did the DX10 version of ***. Creed, but only in minimum detail. If you crank up the settings, DX9 under XP is faster than DX10 or DX9 under Vista.

http://www.pcgameshardware.de/?menu=...=797259&page=1