Right, forget the 10x, that was an error or typo on my part (must have been the early hours). It is definitely 11x.
I now see the reason for the rest of the confusion because the CPU frequency increases when I have AM2 Boost enabled.
With AM2 Boost disabled BIOS/Everest/CPU-Z all agree placing the CPU frequency around 200MHz and the core speed around 2200.
With AM2 Boost enabled the BIOS no longer reports CPU frequency but Everest and CPU-Z report the core speed at around 2362MHz, and CPU-Z now gives the bus speed as 214.8MHz.
So it all boils down to AMC Boost jacking up the CPU from 200MHz to 214.8MHz. As I probably got my original posting spec from Everest (set well before the recent BIOS reset) then it looks like AM2 Boost was originally "enabled" in BIOS.
I've since changed my posting spec to the basic 2200MHz which is "probably" less confusing as it now matches published figures.
Thx for your interest - hope it all now makes sense.