This Graphics and Memory Controller Hub (GMCH) datasheet is for the Intel®82845G GMCH,Intel
®82845GL GMCH, and Intel®82845GV GMCH. The 82845G GMCH is part of the Intel®845G chipset, the 82845GL GMCH is part of the Intel®845GL chipset, and the 82845GV GMCH is part of the Intel® 845GV chipset. Each chipset contains two main components: Graphics and Memory Controller Hub (GMCH) for the host bridge and I/O Controller Hub for the I/O subsystem. The GMCH provides the processor interface, system memory interface, hub interface, and additional interfaces in an 845G / 845GL / 845GV chipset desktop platform. Each GMCH contains an integrated graphics controller (IGD). The 845G chipset, 845GL chipset, and 845GV chipset use the 82801DB ICH4 for the I/O Controller Hub.