The 3470 is pretty basically a stock CPU, if the Hyper X you are looking at are 1.65 sticks, I'd stay away from them, the 3570 at stock can generally run 1600 and some 1866 at stock, there should be no need for sticks to require 1.65 on 1600 sticks (in fact only about 13% of the 1600 sets out there are 1.6 and higher. Intel recommends 1.5 sticks for CPUs at stock....all you really get from 1.65 is more heat from the voltage, most of the sets are entry level 1600/9....might look at the Ripjaws X sets or GSkill Snipers at 1600/9