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Socket G2

CPU socket for Intel mobile processors

Wikipedia contributorsAdapted for Fathomly · View authors
1 min read
Source updated September 1, 2026
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Socket G2, also known as rPGA 988B, is Intel's CPU socket used with their line of mobile Core i7, the successor to the Core 2 line, and also with several mobile Core i5 and Core i3 processors. It is based on Intel's Sandy Bridge and Ivy Bridge architecture. Like its predecessor, socket G1 systems, it can only run in dual-channel memory mode, but with data rates up to 1600 MHz (as opposed to the triple-channel mode which is unique to the LGA-1366 platform and subsequent Xeon sockets). Socket G2 CPUs are also known as FCPGA988 socket processors, which should be pin compatible with PPGA988. It and LGA 1155 are the last two Intel sockets to officially support Windows XP and Windows Vista.

Although nearly all motherboards using this socket are intended for mobile products like laptops, a few desktop boards using this do exist. Supermicro, for example, produced a number of mini ITX motherboards using the QM77 chipset.

01Technical specifications

  • Pins arranged in a 35 × 36 grid array (it is incompatible with G1 socket due to different placing of one pin)
  • 18 × 15 size grid removed from the center
  • Utilization of cam-actuated retention mechanism
  • The r in rPGA refers to reduced pitch which is 1 mm × 1 mm in this socket design.

rPGA 989 (as shown on the right) is a socket that can take Socket G1 (rPGA988A) or Socket G2 (rPGA988B) processors.

Supported memory:

  • DDR3 SoDIMM (1066-1333 MHz, Sandy Bridge); DDR3\DDR3L 1600 may work without DDR3L power optimisations and with 1333 MHz clock speed.
  • DDR3 SoDIMM (1066-1600 MHz, Sandy Bridge Core i7-2720QM and faster).
  • DDR3/DDR3L SoDIMM (1066-1600 MHz, Ivy Bridge).
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Sources and credits

This article is adapted from the Wikipedia article “Socket G2”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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