luther138, If your case vents from the top, mounting the cooler horizontally should be fine as long as it isn't in the way of your memory slots. I used the True that way on my p45 rig with good results. I have the same ram as you but run it using the 2:8 divider, it helps lower QPI/VTT, and you can just use tighter timings, those Dominators should do 1800+ cas7. I am not crazy about that Corsair fan for the memory, I took it off and have a fan sitting on the gfx card blowing on the ram.