There have been many debates regarding this and at this point I'm not exactly sure myself as I do not have a quad core to fool around with.
At this time I'm edging to the fact that this game can indeed use all four cores. The reason?
I have a dual core CPU, and it'll use both cores to their full potential, but on a quad core CPU we do not see this. This leads me to the conclusion that while Crysis is quad core optimized, though the game doesn't need all the CPU resources available to it and the game is severely bottlenecked by the GPU.
I have also seen computer were there is very little activity one 2 cores, but the other two cores are getting all the work. What this would imply is that Crysis is dual core optimized, and the OS is being offloaded onto the inactive CPU cores.
Again, these are only my impressions at this time. Once I get a quad core CPU, I might do a little fool around to look closer into this issue. Also, as you have shown us, the benchmarks are not really a good way to determine this question, you need to play in game to achieve accurate results. Till I myself get a quad core CPU, I'm not going to draw any final conclusions regarding this issue as there is a way to much conflicting evidence.
Edited by james_8970, 19 December 2007 - 11:10 AM.