I bought a motherboard that is coming in the mail. I noticed that 1866(O.C.)*/1333/1066 was in the description for supported memory afterwards. The RAM I bought is 2x4gig of 1600 MHz. Will my RAM work with this mobo?
it will most likely work, but not necessarily at the rated speed of the ram. the motherboard may reduce the clocks to work with your board/processor. also check the support list for ram on the manufacturers web page.