This would be from Anand -- and I suspect the OP's results would be even greater as Anand is not really very objective toward AMD. That may not be fair -- let's say Anand is not very consistent when testing AMD.
Here is an example of the 720BE (not surprisingly similar to the example above) scaling with over-clocking the CPU and the IMC/NB ...
With a 955BE easily reaching 3.6+GHz and 2500MHz IMC/NB, I'm going to change that 25-30% increase to 35-40%
That 'heater' 9750 at 2.4GHz with 2MB L3, no OC headroom, 65nm process and much weaker IMC just can't hang, especially in gaming.