With Phenom II we doubled the number of p-states, with Phenom we only had Div 2 but like Phenom II frequency is modulated for each core individually. In addition 45nm and much better p-state regulation for the memory controller are what have dramatically llowered the idle and load power consumption.

Increasing the FSB should result in scaling of p-states, in other words, CNQ will work fine. However, if you touch the multiplier with a BE part all bets are off. The exception is if you use AMD OD which should allow you to employ CNQ p-states even for a multiplier modified system.

I have not tested all the permutations, and BIOS implementation is a major issue in determining outcomes.