There is something very wrong with the design of the 5760. Please, no comments about super powerful graphics - that's an excuse.
Using mobmeter, I saw the system temperature start rising when I turned on the computer. It went up to about 38C, then the fan kicked in. Now, the temperature is 32C and the fan is running continuously. This is just plain broken - the components can all operate at 50C reliably. Why create so much noise to run the system 18C below where it needs to be?
Yes, this is the CPU temperature, not the GPU temperature. But, as swim pointed out, they share a common heat pipe, so the temperatures are probably pretty darned close...