ok that memory has great timings. the stock voltage is 2.0-2.05V, and i am willing to wager that your mobo doesn't run it that hot on "auto". it's probably 1.8-1.9V or something. so, change that.
also, that ram has a command rate of 1T @ 800mhz, which makes it very unlikely that it will overclock much (if at all) with its stock timings (which are 4-4-4-15). i would raise the voltage first. if that doesnt solve the problem, i would loosen the timings to 5-5-5-15, leaving the command rate at 1T. if that doesnt work, i would then raise the command rate to 2T. your ram is made to be fast without overclocking, so it probably doesnt overclock that well (but...it doesnt really need to...good job on picking that out).
lemme know how that goes.