Okay, little progress. Putting memory in black slots, able to POST and boot into Windows and doing Everest benchmark. For the past hour or so, it seems stable, but haven't done any stress test yet, so stability remains in question. Right now, it's at 7x499 and 1.4V vcore. Doing OCCT and temp is around 65 with the Ultra-120 Extreme. Seems high, but this is only for benching as I will never use my PC regularly at this OCed state.