you won't know till you start the process. baseline your voltage on manual settings, and then start adding clock speed and voltage. with good fortune from the silicone gods you'll get over 4.0 with voltage under 1.2 volts or better under 1.1 volts.
CPU Cooler:CRYORIG H7 49.0 CFM CPU Cooler ($34.50 @ Newegg) Total: $34.50 Prices include shipping, taxes, and discounts when available Generated by PCPartPicker 2015-10-21 20:35 EDT-0400