my gskill 2133Mhz perfect storm working perfectly.... XMP being detected properly... been playing with a 2600K stable at 4.7 ghz with venomous x and temps around 70's-75's when running IBT's but have not optimized the voltages yet ... vcore @ 1.4V ... if I go beyond 4.7 ghz, then vcore needs to be bumped to 1.45v ... and btw i am only using one fan on the VEX a delta 0.8A fan