Sweet rig, love it, I've got the Z87 and the Z97 Heros with a 4770K in each, the Z79 Hero handles DRAM better and OCs better (and with the 4770K or 4790K the skies the limit) think i'd look at 2133 anyway and if in the budget might even look at 2x8GB so you don't need to upgrade a year or so from now, DDR3 prices are continuing to rise