Should be good, so - do you have the latest BIOS? Go into BIOS and enable XMP then select profile 1, no joy? are the sticks in slots 1-3 if no joy there try in slots 2-4, still no joy, back to slots 1-3 and back into BIOS - raise DRAM voltage to 1.55 and raise CPUVTT to 1.14 and try - if still no joy then think you have a bad stick, mobo or CPU - for the sticks can try them in another rig and can try other sticks in yours - still problems can check the CPU socket for bent pins, and that's about it short of having a like rig so yu can cross swap CPU and mobo