Intel® G31/P31 Express Chipset Datasheet

— For the 82G31 Graphics and Memory Controller Hub (GMCH) and the 82P31 Memory Controller Hub (MCH)

This document is the datasheet for the Intel® 82G31 Graphics and Memory Controller Hub (GMCH) and Intel® 82P31 Memory Controller Hub (MCH). Topics covered include; signal description, system memory map, PCI register description, a description of the (G)MCH interfaces and major functional units, electrical characteristics, ballout definitions, and package characteristics.

The primary difference between the Intel® 82G31 GMCH and 82P31 MCH is that the 82G31 GMCH has an integrated graphics device (IGD) plus the associated display interfaces. The 82P31 does not contain an IGD and the associated interfaces.

Specification Update for this document: 317496

† Hyper-Threading Technology (HT Technology) requires a computer system with an Intel® Processor supporting HT Technology and an HT Technology enabled chipset, BIOS, and operating system. Performance will vary depending on the specific hardware and software you use. See www.intel.com/products/ht/hyperthreading_more.htm for more information including details on which processors support HT Technology.

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