I agree with some here in saying that while Crysis is the most visually advanced games available it is also one of the most poorly coded. Even Crytek themselves have admitted this! Sadly though there is currently nothing that can compare to it.
There are a number of titles coming "soon" that will offer it some real competition to Crysis, but CoD4 certainly is not one of them! As said above, it looks hideous in some places.
As for the most demanding game, while technically it is probably Crysis I think it should be ruled out due to the fact that it is clearly so badly coded. I'm not sure what would be the next demanding game on the list, but there is not many games that can currently bring a high end system to its knees quite like Crysis can.
There are a number of titles coming "soon" that will offer it some real competition to Crysis, but CoD4 certainly is not one of them! As said above, it looks hideous in some places.
As for the most demanding game, while technically it is probably Crysis I think it should be ruled out due to the fact that it is clearly so badly coded. I'm not sure what would be the next demanding game on the list, but there is not many games that can currently bring a high end system to its knees quite like Crysis can.