"To overclock the AMD Phenom II X4 940 I started with the multiplier since this is a "Black Box" Edition with an unlocked multi. I pushed the multi 1x at a time until the system would not boot or became unstable. Then I backed it down by a half to achieve stability. Next I pushed the BUS speed 1MHz at a time until again the system because unstable. Doing this gave me a nice stable overclock that passed all of the benchmarks with no problems at all. The final overclocking result was 3.755GHz which is about a 26% overclock. This is also 155MHz better than my first run with this processor when I attended the AMD Tech Day."