Socket 479

Socket 479
TypePGA-ZIF
Chip form factorsFlip-chip pin grid array (FC-PGA2)
Contacts479 on the socket, 478 or 479 pins on the processor, 478 contacts used
FSB protocolAGTL+
FSB frequency400 MT/s, 533 MT/s
ProcessorsIntel Pentium M
Intel Celeron M
VIA C7-M
PredecessorSocket 495
SuccessorSocket M

This article is part of the CPU socket series

Socket 479 (mPGA479M) is a CPU socket used by some Intel microprocessors. It is the socket used by the Pentium M and Celeron M mobile processors normally used in laptops,[1] but has also been used with Tualatin-M Pentium III processors. The official naming by Intel is μFCPGA and μPGA479M.

There exist multiple electrically incompatible, but mechanically compatible processor families that are available in PGA packages using this socket or variants thereof:[1]

Even the Intel's CPU specifications seem to be not clear enough on the distinction and instead use the package/socket designations PGA478 or PPGA478 for more than 1 of the above sockets.[2][3]

Perhaps adding yet more confusion, some of the PGA-based CPUs above are also available in a BGA (or more precisely, μBGA or even μFCBGA) package which has all of the 479 contacts (balls) populated. For these CPU variants, the Intel's CPU specifications use the designations BGA479,[2] PBGA479[3] or H-PBGA479.[4] It should be however pointed out that these designations denote rather the CPU package itself and not the socket, which the BGA variants do not use at all (they are intended to be directly soldered to the mainboard, e.g. in an embedded system). The non-BGA counterparts of these CPUs use any one of the above mentioned sockets, not only the Socket 479.

  1. ^ a b Socket 479 (μPGA479M), CPU-World, retrieved 2009-01-07
  2. ^ a b Intel Core 2 Duo Processor T9900 Specifications, Intel, retrieved 2016-07-13
  3. ^ a b Intel Celeron M Processor 440 Specifications, Intel, retrieved 2016-07-13
  4. ^ Intel Pentium M Processor 750 Specifications, Intel, retrieved 2016-07-13