Intel Desktop Board D915GAV/D915GAG Technical Product Specification
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1.7 Intel
®
915G Chipset
The Intel 915G chipset consists of the following devices:
• Intel 82915G Graphics Memory Controller Hub (GMCH) with Direct Media Interface (DMI)
interconnect
• Intel 82801FB I/O Controller Hub (ICH6) with DMI interconnect
• Firmware Hub (FWH)
The GMCH is a centralized controller for the system bus, the memory bus, the PCI Express bus,
and the DMI interconnect. The ICH6 is a centralized controller for the board’s I/O paths. The
FWH provides the nonvolatile storage of the BIOS.
For information about Refer to
The Intel 915G chipset http://developer.intel.com/
Resources used by the chipset Chapter 2
1.7.1 Intel 915G Graphics Subsystem
The Intel 915G chipset contains two separate, mutually exclusive graphics options. Either the
GMA900 graphics controller (contained within the 82915G 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 GMA900 graphics
controller is disabled.
1.7.1.1 Intel
®
GMA900 Graphics Controller
The Intel GMA900 graphics controller features the following:
• Integrated graphics controller
⎯ 32 bpp (Bits Per Pixel) graphics engine
⎯ 333 MHz core frequency
⎯ 256-bit 2-D engine
⎯ 32-bit 3-D engine
⎯ Motion video acceleration
⎯ Pixel Shader 2.0
⎯ 4-pixel pipes
⎯ DirectX* 9.0 Hardware Acceleration
⎯ Software Vertex Shader
• Up to 2048 x 1536 at 75 Hz refresh
• With Advanced Digital Display 2 (ADD2) card support flat panel displays up to 2048 x 1536 at
75 Hz or digital CRTs/HDTV displays at 1920 x 1080 at 85 Hz
• High performance 3-D setup and render engine
• High quality/performance texture engine
• Display
⎯ Integrated 24-bit 400 MHz RAMDAC
⎯ DDC2B compliant interface
