page_title: Socket 478
hierarchical_section_title: Socket 478
caption_attribution_description: English: Pentium 4 - SL5TK Willamette with Socket 478 (2001), pin side, from a Compaq Deskpro Evo
context_page_description: Socket 478 is a 478-contact CPU socket used for Intel's Pentium 4 and Celeron series CPUs.
  Socket 478 was launched with the Northwood core to compete with AMD's 462-pin Socket A and their Athlon XP processors. Socket 478 was intended to be the replacement for Socket 423, a Willamette-based processor socket which was on the market for only a short time. Socket 478 was phased out with the launch of LGA 775 in 2004.
context_section_description: Socket 478 (also known as mPGA478, mPGA478B) is a 478-contact CPU socket used for Intel's Pentium 4 and Celeron series CPUs. 
  Socket 478 was launched with the Northwood core to compete with AMD's 462-pin Socket A and their Athlon XP processors.  Socket 478 was intended to be the replacement for Socket 423, a Willamette-based processor socket which was on the market for only a short time.  Socket 478 was phased out with the launch of LGA 775 in 2004.
caption: Pentium 4 Willamette with Socket 478 (2001), pin side
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