It's fairly big. The Cooler Master Hyper 212+ it's a 120mm unit. 79.7 mm wide. I'll probably just go with the low profile but I'm still worried about it not being in the compatibility list. Google search hasn't turned up anything either.
U have the requirements for the RAM, correct? My Corsair RAM was not on the ASUS list also and works like charm.
OPTIMIZED FOR COMPATIBILITY WITH THE LATEST CPUS
Designed specifically for the latest CPUs, Corsair Vengeance modules run at 1.5V for maximum compatibility with all Intel Core i3, i5 and i7 processors, as well as the 2nd generation (Sandy Bridge) Intel Core processor family.
-------------------------Z68 Extreme3 Gen3
- Dual Channel DDR3 memory technology
- 4 x DDR3 DIMM slots
- Supports DDR3 2133(OC)/1866(OC)/1600/1333/1066 non-ECC, un-buffered memory
- Max. capacity of system memory: 32GB*
- Supports Intel® Extreme Memory Profile (XMP)