Awrite guise.

I'm trying to play Crysis at Very high Settings on 1024x178 with 2x anti aliasing to get 25-30 FPS.

with stock clock settings i get about 15 FPS, it's annoying. when i oveclock it about ~600Mhz with memory clock 450Mhz. it plays nice for about 30 minutes.
then it freezes the game.

If you guys know anything about overclock post here. this thread is on Guru3d forums aswell.

My specs are:
Intel Quad Core 2.4Ghz
2x RAM Kingston DIMM !GB (2GB Total)
2x Point of View Ge Force 8600GT 512MB (1GB Sli Mode Enabled)
500GB HDD
MotherBoard GIGABYTE i650 SLi
Power Supply 450 WATT

here is a screenshot.








And here is the stock settings: