Datasheet

Intel® 855GM/855GME Chipset GMCH Overview

Datasheet 23

2 Intel

855GM/855GME Chipset

GMCH Overview

2.1 System Architecture

The Intel 855GM/855GME GMCH components provide the processor interface, DDR SDRAM

interface, display interface, and Hub interface. The Intel 855GME also has an option for AGP

external graphics port, in addition to integrated graphics support for added board flexibility

options.

2.1.1 Intel

855GM Chipset GMCH

The Intel 855GM GMCH is in a 732-pin Micro-FCBGA package and contains the following

functionality listed below:

• AGTL+ host bus supporting 32-bit host addressing with Enhanced Intel SpeedStep

technology support

• Supports a single channel of DDR SDRAM memory

• System memory supports DDR200/266 MHz (SSTL_2) DDR SDRAM

• Integrated graphics capabilities: Display Core frequency at 133 MHz or 200 MHz

• Render Core frequency at 100 MHz ,133 MHz, and 200 MHz

• Provides supports four display ports: one progressive scan analog monitor, dual channel

LVDS interface and two DVO port.

2.1.2 Intel

855GME Chipset GMCH

The Intel 855GME GMCH is in a 732-pin Micro-FCBGA package and contains all features listed

above and the additional functionality list below:

• Display Core frequency at 133 MHz, 200 MHz, or 250 MHz

• Render Core frequency at 100 MHz ,133 MHz, 166 MHz, 200 MHz, or 250 MHz

• System memory supports 200/266/333- MHz (SSTL_2) DDR SDRAM.

• Enhanced Power Management Graphics features