Phenom II and C'n'Q 3.0 - Reviewers were wrong :p:

[Lightman]

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.

Thanks for inside info Simon!
Now I've tried multis in AOD but they don't work. As soon as I change Power Profile to one using C'n'Q everything goes to default, including voltages.
That is on my GA-MA790FX-DQ6 with final F6 BIOS (not yet on GBT page).
I know some motherboards allow you to set C'n'Q lowest and highest multi from BIOS (if I remember properly it was MSI K9N or DFI for S939).

Oh, and do you know why Vista and XP are using p-states differently? (as explained in first post)