Technical Specifications
Socket 478 was used for all Northwood Pentium 4 and Celeron processors. It supported the first Prescott Pentium 4 processors and all Willamette Celerons, along with several of the Willamette-series Pentium 4s. Socket 478 also supported the newer Prescott-based Celeron D processors, and early Pentium 4 Extreme Edition processors with 2 MiB of L3 CPU cache.
Celeron D processors were also available for Socket 478 and were the last CPUs made for the socket.
While the Intel mobile CPUs are available in 478-pin packages, they in fact only operate in a range of slightly differing sockets, Socket 479, Socket M, and Socket P, each incompatible with the other two.
Read more about this topic: Socket 478
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