How to tell my CPU speed?

[cHk4]

I have an i7 I got from OcUK in the bundle which should be at 4.2. However Windows states its 2.67 which is fine. Now I got CPU-Z now unless I'm being thick how do I see if it's 4.2?

Thanks

-edit-
Changed image as that one was huge!

-edit-

By the way encase anyone else reads this and is interested in a OcUK bundle, when I originally got it, it was running at 4.2 just since then I must have done something

 

[cHk4]

Thanks both of you. Para, I did what you said and saw it only went to 2.8 so knew there is something wrong.

Then going by what RJC said I checked BIOS and for some reason it had changed profile. Loaded up the 4.2 one in there and now

Thank you