BTW -Yes, the DDR will fit easily under your Cooler Master Hyper 212.
Oh... crap. I guess this RAM technically isn't listed in the QVL for the P6X58D Premium.
The QVL lists the F3-12800CL8T-6GBPI by G.Skill. I copied and pasted that into Newegg which took me to the link I originally posted, but that RAM is actually F3-12800CL8TU-6GBPI.
Round and round I go... well, does anyone have a triple channel RAM recommendation that's certified for use in a P6X58D Premium up to six modules? (For a CS5 Master Collection and 3ds Max workstation.)