Are you using Vista?
There's some settings in Vista for different power management options. It might already be on the correct one, or might not.
However, I do not use vista so I can't recall which is the best setting - doh!!
If you turn off CnQ, you will be racing at 3.2ghz while typing an email - while this is a moderately exciting idea; it is quite a waste in the transforming world of "green". You could turn it off, just so you feel better; but really it's better on, esp. if you are the one paying the electric bill.
Another thing people don't know is that oclox settings might be undone on reboot - and this depends on which mobo you have. Asus will retain oclox settings and perform beautifully with CnQ - this is an overclocker's dream - because, again, typing a text file at 3.6ghz is rather wasteful. I recently heard also that some MSI boards will support CnQ combined with oclox. Gigabyte appears not to - and an oclock setting will be undone on reboot (except a mild oclox MIGHT be retained, or, a socalled "fsb" oclock might be retained, if not too high.
This is really inconclusive info discovered at amdzone by a few members there. Giga is supposedly working to fix this; but not yet fixed. I have no additional info re MSI mobos. But Asus is good to go.
Perhaps that will help - dunno if you are oclox or what mobo you have - but that's the scoop.
Reading mobo manuals is not just for noobs - although sometimes it may not be helpful re such situations involving bios settings, still, it might. Googles works wonders sometimes too.
Also 800 mhz is the lowest of four p-states (power states). Approx frequencies, depending on how busy cpu is:
800/1800/2200/3200 (or similar).
The cpu will change seamlessly between these 4 states when working properly, and it depends on the load. Transition is immediate and seamless.
Also - funny - re Prime95 - a 955 was observed to run at 2200mhz while running Prime. Some of us concluded that the 955 cpu just did not consider Prime to worthy of it's attention - so much for benchmarks.

HOWEVER - this occured on a win XP system o/s, and XP is rather old for newer cpu's. Vista or W7 respond appropriately and use full speed. - so much for benchmarks


.
Sorry I can't recall the correct best setting in windoze power management.
Perhaps someone else can.
Whatever is happening on your pc it's ok - a 955 does not always run at 800 mhz. really.