History

• The Pentium 4 processor chip was first introduced in 2000. The Willamette series of Pentium 4 processors was the first to be launched by Intel.
  
  

Specifications

• The Pentium 4 family ranges in processing speeds from 1.3 GHz to 3.8 GHz. It also varies in front-side bus speeds of 400 MHz, 533 MHz, 800 MHz and 1066 MHz. L2 cache sizes also differ, with sizes of 256KB, 512KB, 1MB and 2MB. The Extreme Edition of Pentium 4 chips also contains L3 cache sizes of 2MB. Pentium 4 socket types include Socket 423 (Willamette), Socket 478 (Willamette, Northwood, Prescott, Extreme Edition, Mobile 4-M and Mobile) and Socket 775 (Prescott, Cedar Mill and Extreme Edition).
  
  

Types

• The Pentium 4 processor family is made up of the Pentium 4 Willamette, Northwood, Prescott, Cedar Mill, Extreme Edition, Mobile Pentium 4-M and the Mobile Pentium 4.