AMD Phenom II X4 940 Black Edition Overclocking revisited
 

We also wanted to see how our power supply unit would hold in these difficult conditions. Marketing departments have recently managed to impress in users' minds that a powerful computer, especially when overclocked, cannot use a power supply unit below 750 W or even below 1000 W. Let's try to find out whether it's true.

As you may remember, AMD Black Edition processors are implied to allow modifying the multiplier. So any motherboard would do for CPU overclocking in this case. It doesn't have to raise chipset voltage and endure very high clock rates.

A nice feature of a motherboard in our testbed was an option to specify a CPU multiplier at 0.5 steps, not just at integer steps. It facilitates the overclocking procedure, leaving to an overclocker only final tweaking within 100 MHz.



http://ixbtlabs.com/articles3/cpu/phenom-940-oc-p1.html