Ive had issues with my Q9550 2.83ghz quad core.. i have yet to test it with a program that shows the heat.

After a while of boxing or even crysis the computer shuts it self off... No warnings, nothing it just shuts down and if i try to restart and run wow again it takes 1 stressed situation and boom its off again.

I also run with water cooling and i will be calling the place i bought the pc today because i mean WTF it even shuts down after 1 hour of downloading on my blizzard updater!