I got my fx 8120 to run at 4ghz with 1.28v. I would try a lot less and manual your cpu load line so that it does not dip when under full load, i would try high.
use hyper pi as a quick test, 1m takes a minute and give you your full load voltage.
also try lowering your cpu-nb if you can, takes out a bit of heat and I never tried, but might also be able to be stable for less than stock voltage.
the 8120 had 2200mhz with 1.225v 2000 at 1.175v, but the 8350 has only...