Hey, 3 out of 5 times - when cold booting - I get extremely high RPM on my official Apple 5770. One way of fixing this is using the "Open GL Extension Viewer" app available in the app store. Running the cube test seems to fix this problem. I already tried SMC reset - did not help at all! I also checked if the card is connected to the "A" power socket on the motherboard, as I read that problems could occure if the card is in PCIe slot 1 but power connector B. It was connected to the A connector all the time. Now I won't dig into this problem to deep as I will upgrade to a GTX 780 in a few days anyways. but I am still eager to fix this Here are some pictures of before, and after the OpenGL test. Before: As you can see the fans are running over 2000 RPM!!! After: After the test the fans went down to 800 RPM - where they belong to. What kinda scares me too - is the PS RPM. (I guess this is the power supply?) It also was significantly higher before running the test. Or was this caused by the high RPM from the graphics card aswell? I also should mention that I ran no GPU intensive applications etc. I was simply booting to the desktop and started smcfancontrol.