Why worry about your CPU Cooler being able to clear your ram chips? Buy Lo Profile and you'll be happy! These work well, overclock easily, and are rock-solid. Everything you want in your game build-- and none of the ridiculous heat spreaders that fight with today's monster air-coolers. Plus- they're blue and match the ASUS motherboard! Bought 16GB kit from Amazon - and I'm set. No worries about trying to add on later - all four ram slots filled, Noctua DH-14 monster air cooler sits on top, clearance to spare. I'm 100% satisfied with these ram chips, and my ASUS motherboard was able to push them over 1600 up to 1633 or so with no crashes or lockups.