Socket 478

In computing, Socket478 is a type of CPU socket used for Intel's Pentium 4 and Celeron series CPUs. Socket 478 is going away with the launch of LGA 775 (LGA stands for Land Grid Array, referring to the fact that the pins are on the motherboard).

Socket 478 has been used for all of the Northwood Pentium 4s, the first Prescott Pentiums, and some Willamette Celerons. The socket was launched with the Northwood core to combat AMD's 462-pin Socket A and their Athlon XP processors. Socket 478, which accomodates high- and low-end processors, was also the replacement for Socket 423, a Willamette processor socket that did not have a long life.