My GPU was running hot because my Sound Card was blokking it's Fan. Any other placement (pci-e slot) resulted in reduced Graphics, or no sound . . . Running: Motherboard: -MSI 975x Platinum Powerup Edition CPU: -Intel E6600 Memory: -Kingston HyperX pc6400 2Gb 800MHz x2, makes 8 GPU: -Asus en9800GT 512Mb Soundcard: -Asus Essence STX II 7.1 Problem solved by moving the Soundcard with a Pci-e 1x to 16x - USB 3.0 riser cable, which has an extra molex to get it's power directly from the PSU. And installed an aftermarket Cooling from Arctic, called Accelero X1. This was only by resoldering one knobby component from the bottom of the Card, to the Top, and using the original fanplug from Asus on the Arctic Cooler, so had 2 Soldering job,two little pins were in the way, just bend them down, Job done result : -before . . . idle 70'C . . . under load . . . 100'C -after . . . idle 40'C . . . under Load . . . 70'C