The ACC (Advanced Clock Calibration) deception in the BIOS of motherboards with the AMD SB710 or SB750 Southbridge also works on the Sempron 140 processor. By activating this aspect in the BIOS, the stop second core of the chip will be wide open, spinning it into an Athlon II X2.

The trick needs a motherboard with AMD SB710 or SB750 Southbridge that supports the Advanced Clock Calibration characteristic. Not all motherboards, but, support this mod. By merely enabling the aspect in the BIOS setup program, the system will be capable to address mutually processor cores, with the total feature-set of Athlon II X2. The staff behind the feat over tested for the unlocked core's constancy with much achievement. At 3.71 GHz (13.5 x 275 MHz @ 1.536 V), the processor stood SuperPi, WPrime, as well as WinRAR bandwidth tests. Validation can be established here.