ARMA II – DX9
Bohemia Interactive’s latest military sim, ARMA II, is known for its ability to bring systems to their knees. With its large outdoor environments and advanced physics engine it’s pretty demanding on your CPU and GPU, and as our results show it performs best in Windows XP at this moment: both the Radeon 4890 and GeForce GTX 275 cards run at least 10% faster under XP, if not more.
Considering this is a pretty new title, neither ATI or NVIDIA have had much time to optimize their driver for it. NVIDIA just get SLI support added to ARMA 2 with ForceWare 190.38, while the latest Catalyst drivers (including 9.8) lack CrossFire support for ARMA 2.