Very easy to overclock even with auto Asus Z87A. Switch to very stable (for 1 month without crashing) from 3.4GHz to 4.126Ghz. Same test, always self to 4.9Ghz overclock of 45% and remains stable for test but OCCT plant in duration. Must be manually refined. By cons with a cooler Be quiet Dark Rock C1 in normal use the fan does not exceed 420T / min and a temperature of 28 °.
Overclock 25% and max temperature under OCCT h during a 71 ° and a fan to 750t / min only. 4.9Ghz overclock pushed to a temperature of only 82 ° and a fan almost thoroughly with 1450 l / min (max 1500t / min). Very good CPU. In use offers good perfs.