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Intel® 855GM Chipset

Intel® 855GM Chipset

The Intel® 855GM chipset graphics memory controller hub (GMCH-M) is a highly integrated mobile chipset solution that has been optimized to support the Intel® Pentium® M processor.

Intel® 855GM Chipset

Chipset Diagram

Features and benefits
400 MHz low power processor system bus Supports 400 MHz system bus for single processor configurations.
Support for up to 2GB of DDR 266/200 memory technology Higher performance & flexibility.
Intel® Extreme Graphics 2 technology Delivers intense, realistic 3D graphics with sharp images, and enables balanced memory usage between graphics and system for optimal performance.
Integrated high-speed USB 2.0 Support for USB 2.0 peripherals for 40X faster data transfer rate and backward compatible to support USB 1.0 devices.
Dynamic input/output buffer disabling for processor system bus & memory Reduces chipset power consumption by Intelligently activation or power-down of the processor system bus or memory.
Optimized internal clock gating for 3D & display engines Reduces chipset power consumption by intelligently clocking 3D & display engines based on application needs.
Integrated low voltage differential signal (LVDS) interface Higher integration to enable smaller laptop designs.
Dual independent display View two independent video sources when external monitor or panel is connected to the laptop.
Image rotation Ability to rotate the screen image.
Intel® Stable Image technology Enables chipset HW changes, minimizing impact to IT SW image stability. Additionally, Intel® 855GM chipset supports unified graphics driver which reduces TCO by converging to one driver for multiple clients.
Packaging information
82855GM (MCH) 732 pin Micro-FCBGA
82801DBM (ICH4-M) 421 pin Micro-BGA