Yeah...the Unreal Engine 3 is a very well optimized engine. I personally didn't have any problems running BioShock wide open with 1 Gig of RAM, an 8800 GTX and a dual core Athlon X2 4600. Too bad Crysis runs like crap and doesn't really look that much better than the Unreal 3 based games; at least not enough to warrant the huge decrease in performance.