What does X mean on intel processors?

[computerbuildin]

No, im not getting one, I only need one reply, just wanted to know what the X means on the i7 3960x, I already know what K means

 

[XX55XX]

X means "extreme". Just nomenclature that you are a significant contributor to Intel's margins, by buying one of their most highest-margin products.

 

[greenhawk]

"K" + price = "X"

is about it