odd. i mean, it must be a board issue, as i was able to clock to 3.8ghz rock stable on my gigabyte X48T-DQ6 with 4gb DDR3 1600 ram with much less voltage and no gtl tweaks.
if you have the means i'd pick up another board, maybe that biostar tpower, to reference. http://www.newegg.com/Product/Produc...2E16813138118R <---open box board for 100 bones sweet deal