I also wanted to say this card is factory overclocked as well. Stock clocks for 3870's are 775/1125. This one has 800/1170. However, max core clock is the CCC is 840 which as you can see it does (not sure why GPUz is only registering 837) but it won't allow me to overclock the memory at all. That doesn't give much if any gains anyway.
Also, I've replaced the stock thermal compound with arctic silver. With the fan at 55%, I never saw more than 68c.