http://www.nzone.com/object/nzone_batmanaa_downloads.html Note that the download is about 2.03 GB in size. I just tested this demo out on my 15'' NP8662 Gaming laptop running Windows 7 RC 7100 X64. I have settings at very high detail level, resolution at 1680 X 1050, AA disabled, everything else on and Physx set to high. I get from 35-40 fps, sometimes 50-60 fps. With Physx disabled I get a more constant 45-50 fps and a lot of the time 59-60 fps. I guess this is where SLI would come into play in terms of being able to use Physx without frame rate drops. Either way, this game is perfectly playable and I love the combat. It does look much better with Physx enabled though. It would be interesting to know anyone elses performance.