I have asus p67 saber tooth b3 has served me great can take anything i throw at it. Recently i updated to a i7 3770k & i can barely get over 4.2ghz without blue screens. I've followed guides,updated bios & cooling is efficiency enough. Previously before i was running my older 2600k at 4.7ghz stable. My question is has anyone that's updated to ivy bridge on p67 came across any issues in overclocking.