CPU speed is the CPU clocking. You CPU is probaly a 3.0GHz one. 3.0GHz is 3000MHz. The CPU is derived from its FSB speed and its multiplier. This CPU has a default clock speed of 200MHz, quad-pumped to 800MHz. The multiplier for this CPU is 15. 800 X 15 = 3000MHz.
Download a program called CPU-Z and post a screenshot of what it shows.