dx10 crysis will work ur 8800gt more. problem solved. summer increases ambient temp and thats not helping it at all. plus, u are overclocking which isnt good for 8800gt because its temps are high as it is. my 8800gt hits 81C max so far and it hasnt crashed or anything, its at stock. try playing crysis in dx9 mode since 8800gt cant handle very high at high resolutions, it looks the same and will help keep ur card cooler.
The point is it's not just Crysis, it's every game, even idle temps. I changed out the cheap thermal tape for Arctic Silver and temps dropped a few but still, that still doesn't show why i could OC by 50 mhz core, and mem, and 125 mhz in shaders and get the same temps I have now.