Pretty good without adding voltage no? It's not an exact max OC because this is just to test 1500 Mhz, which it stayed at the entire run. Memory is at 3954 Mhz because BF4 crashed with little red squares on the screen at 4000 Mhz memory for some reason. Seems fine is benches though. Also note this is with modded BIOS that quits voltage throttling and that's it.