Datasheet

Product Description
21
1.6 Intel
®
945G Chipset
The Intel 945G chipset consists of the following devices:
• Intel 82945G Graphics Memory Controller Hub (GMCH) with Direct Media Interface (DMI)
interconnect
• Intel 82801G I/O Controller Hub (ICH7) with DMI interconnect
The GMCH component provides interfaces to the CPU, memory, PCI Express, and the DMI
interconnect. The component also provides integrated graphics capabilities supporting 3D, 2D and
display capabilities. The ICH7 is a centralized controller for the board’s I/O paths.
For information about Refer to
The Intel 945G chipset http://developer.intel.com/
Resources used by the chipset Chapter 2
1.6.1 Intel 945G Graphics Subsystem
The Intel 945G chipset contains two separate, mutually exclusive graphics options. Either the
GMA950 graphics controller (contained within the 82945G GMCH) is used, or a PCI Express x16
add-in card can be used. When a PCI Express x16 add-in card is installed, the GMA950 graphics
controller is disabled.
CAUTION
The PCI Express x16 connector on this board is intended for use with a PCI Express x16 riser card
only. Do not plug a PCI Express x16 add-in card into this connector. Doing so could damage both
the PCI Express x16 add-in card and the connector.
1.6.1.1 Intel
®
GMA950 Graphics Controller
The Intel GMA950 graphics controller features the following:
• 400 MHz core frequency
• High performance 3-D setup and render engine
• High quality texture engine
⎯ DX9* Compliant Hardware Pixel Shader 2.0
⎯ Alpha and luminance maps
⎯ Texture color-keying/chroma-keying
⎯ Cubic environment reflection mapping
⎯ Enhanced texture blending functions
• 3D Graphics Rendering enhancements
⎯ 1.3 Dual Texture GigaPixel/Sec Fill Rate
⎯ 16 and 32 bit color
⎯ Maximum 3D supported resolution of 1600 x 1200 x 32 at 85 Hz
⎯ Vertex cache
⎯ Anti-aliased lines
⎯ OpenGL* version 1.4 support with vertex buffer and EXT_Shadow extensions