8800GTX for Crysis? hmmm.....Not with 1920x1200 with AA and AF. Crysis will bring that card to it's knees. However CryEngine2 is does look very nice. The scenery is great, good lighting, and overall I think it looks phenomenal.
Unreal 3 engine looks fantastic too. But also requires a hardware premium. Alvin, you need to remember that R500 is not a bad video card at all...probably better than any 8600GTS, or HD 2600. Couple that with a cpu that has three cores, and wow....its amazing. Unreal 3 will also bring a system to it's knees.
With all that said, looking at both engines, they can't be compared. CryEngine 2 will probably not be licensed out to other companies as it is relatively new and probably the code for it is quite confusing. While Unreal 3 engine is made to be modular, made for it to be easy to understand, made so it is easy to bring to other platforms while maintaining the same efficiency that it has.
CryEngine 2 and Unreal 3 engine are all very optimized, fantastic graphics and the requirements are not insane. There are the requirements for crysis
See? not too bad. So you have to say that both of these engines are VERY optimized, unlike some engines....*cough*ea*cough*
So stop your bickering and just buy the games when they come out and appreciate that your computer doesn't blow up trying to run them.