Intel Desktop Board D815EEA2/D815EPEA2 Technical Product Specification
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1.10 Graphics Subsystems
This section describes the graphics subsystems used by the D815EEA2 and D815EPEA2 boards:
• The D815EEA2 board uses the Intel 815E graphics subsystem, described below.
• The D815EPEA2 board uses the Intel 815EP graphics subsystem, described in Section 1.10.2,
beginning on page 42.
1.10.1 Intel 815E Graphics Subsystem
The 815E chipset, used on the D815EEA2 board, contains two separate, mutually exclusive
graphics options. Either the integrated graphics controller (contained within the 82815 GMCH) is
used, or an add-in AGP adapter can be used.
The GMCH includes an integrated display cache SDRAM controller that supports a Graphics
Performance Accelerator (GPA) card. The GPA card is a 32-bit 133 MHz 4 MB SDRAM array for
enhanced integrated 2D and 3D graphics performance. This interface is multiplexed between the
display cache interface and the AGP connector. When an AGP card is installed, the integrated
graphics controller is disabled and the display cache interface is not used.
For information about Refer to
GPA support Section 1.10.1.3.1, page 41
1.10.1.1 Integrated Graphics Controller
The GMCH features the following:
• Integrated graphics controller
3-D Hyperpipelined architecture
Full 2-D hardware acceleration
Motion video acceleration
• 3-D graphics visual and texturing enhancement
• Display
Integrated 24-bit 230 MHz RAMDAC
Display Data Channel Standard, Version 3.0, Level 2B protocols compliant
• Video
Hardware motion compensation for software MPEG2 decode
Software DVD at 30 fps
• Integrated graphics memory controller
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