Hmm, when I looked it up, I saw that it was something that needs to be turned on in the BIOS, but these were generally older posts/articles. Was this the case at one point?
A friend of mine who has an i7 2600K had an option, that called itself Turbo and turning this on produced a significant boost in performance, though this may have been an overclocking feature built into the motherboard rather than Intel's.