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Intel® 855GM ChipsetOverview

The Intel® 855GM chipset graphics memory controller hub (GMCH-M) is a component of Intel® Centrino® processor technology. A highly integrated mobile chipset solution that has been optimized to support the Intel® Pentium® M processor, the Intel® 855GME chipset is designed to deliver breakthrough performance at lower power.

Product information

Features and benefits

400 MHz low power processor system busSupports 400 MHz system bus for single processor configurations.
Support for up to 2GB of DDR 266/200 memory technologyHigher performance & flexibility.
Intel® Extreme Graphics 2 technologyDelivers intense, realistic 3D graphics with sharp images, and enables balanced memory usage between graphics and system for optimal performance.
Integrated high-speed USB 2.0Support 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 & memoryReduces chipset power consumption by Intelligently activation or power-down of the processor system bus or memory.
Optimized internal clock gating for 3D & display enginesReduces chipset power consumption by intelligently clocking 3D & display engines based on application needs.
Integrated low voltage differential signal (LVDS) interfaceHigher integration to enable smaller laptop designs.
Dual independent displayView two independent video sources when external monitor or panel is connected to the laptop.
Image rotationAbility to rotate the screen image.
Intel® Stable Image technologyEnables 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.


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Packaging information

82855GM (MCH)732 pin Micro-FCBGA
82801DBM (ICH4-M)421 pin Micro-BGA

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