I am about to start a new configuration a QX9770 based on rampage extreme X48. It remains to be determined the choice of RAM. I will of course overclock everything and therefore I need advice/opinions on the type of RAM, the make, model etc. I personally throw my vest on FLEX EX OCZ 4GB 2x 2GB PC3-16000 2000MHz who are Section 8 of origin. Now I ask myself the question of possible incompatibilities and also the value to go up to 16,000 of the PC?