what is this equal to?

[xxcoop42xx]

on cpu-z it says my core clock is at 1998MHz. does that mean 1.9GHz? and i thought a q9300 is supposed to be 2.5GHz. some one please explain.

 

[Maziar]

dont ask a question twice:
http://www.tomshardware.co.uk/forum/248652-11-tomshardware#t1771933