Should have mentioned that I did run memtest with no errors, however that was with all 3 installed at default settings. I'll run it with just the 2x2 and report back.
Also I'm thinking of returning the 8gb stick and getting a 2x4 setup instead
UPDATE: Currently 1h15min @4.2ghz, 1.344v, 43c on the core and 2x2gb RAM. I may be imagining it, but the tests seem to be completing faster than before. Looks like that 8gb stick may have been the culprit after all.
UPDATE 2: Stopped the test at 2hr with no issues. Gonna run some benchmarks and play some games to test it out, then an overnight prime95 test just to be sure Im on the right track. Is it possible the motherboard can only run on dual channel RAM?
Edited by zx2ner88 - 7/6/16 at 7:35pm