Yes i checked everything,cpu proper in socket,memory does not work above 2133 either single or dual channel,either slot.2133 9-10-10 fully stable at 1.5,anything above 2133 get's 55,no matter what cas 11,12,13 etc.Guess it's the cpu itself,it's a terrible clocker too,needs 1.35 for 4.5 and won't go above 4.7 on air for a bench no matter what