So on amazon there's 2400 Mhz ram for $20 less than 2133. Since the 2400 is 1.65 volts and the 2133 down is 1.5 and my mobo only supports 2133, could I like "turn down" my voltage/speed to fit my requirements? Thanks!
yeah you can turn down the speed, Just remember that ram speed does not affect gaming performance almost at all. Make sure the CAS latency is important too.
CHECK pcpartpicker.com to find the cheapest RAM with certain specs
What mobo, the Fury sticks operate off PnP, so you'll need (and prob have) a newer mobo, 1155, 1150 or one of AMDs newer lines (cam out after 2011 or so