ASRock only lists two 4gb RAM sticks in their Memory QVL (neither of which I can find on newegg). Given this board is supposed to be able to handle 16gbs, that's kind of a joke. What RAM modules have you successfully used on a 770 Extreme3? I was considering the G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL . Anyone used these? Have another I should consider? Thanks!