Control panel reports wrong cpu speed

I have a dell i ordered an athlon 64 x2 dual core 5000+ 2.6ghz
and SIW reports it as that as does belarc adviser
but the control panel reports it as athlon 64 x2 dual core 5000+ (from there the speed is always wrong it usually says 1.80ghz and i just looked and it said 989mhz) is this something with the bios should i worry about it is it throttling my system or just getting reported wrong

all of the sudden i close it and reopen and now it says 2.61 WTF is the deal here

Probably nothing to worry about. I think you are just seeing the effects of AMDs Cool'n'Quiet technology which usually can be disabled in the bios

Yea... probably clock speed adjustments based on CPU load.

Ok ty

I'll not worry with it then