heat problem with
GPU-Graphic Process Unit not
CPU it's all. Go to graphic driver inter face and open the temperature of GPU dysplay, let it open and run the game, IF your game shut down the computer after 5 minute than press the WINDOWS key after 4 minutes and check the temperature after 3D activity, if they are over 60° C is an abnormal temperature, buy and mount a cooler they respect this name "ZALMAN"