Intel DG33BU specifications Dynamic Video Memory Technology Dvmt, Configuration Modes

Intel Desktop Board DG33BU Technical Product Specification

•Video

⎯Software DVD at 30 fps full screen

⎯DVMT support up to 256 MB

•Display

⎯Supports analog displays up to 2048 x 1536 at 75 Hz refresh (QXGA)

⎯Dual independent display support

⎯DDC2B compliant interface with Advanced Digital Display 2 card or Media Expansion Card (ADD2/MEC), support for TV-out/TV-in and DVI digital display connections

1.6.1.2Dynamic Video Memory Technology (DVMT)

DVMT enables enhanced graphics and memory performance through highly efficient memory utilization. DVMT ensures the most efficient use of available system memory for maximum 2-D/3-D graphics performance. Up to 256 MB of system memory can be allocated to DVMT on systems that have 512 MB or more of total system memory installed. DVMT returns system memory back to the operating system when the additional system memory is no longer required by the graphics subsystem.

DVMT will always use a minimal fixed portion of system physical memory (as set in the BIOS Setup program) for compatibility with legacy applications. An example of this would be when using VGA graphics under DOS. Once loaded, the operating system and graphics drivers allocate additional system memory to the graphics buffer as needed for performing graphics functions.

NOTE

The use of DVMT requires operating system driver support.

1.6.1.3Configuration Modes

The video modes supported by this board are based on the Extended Display Identification Data (EDID) modes of the monitor to which the system is connected. Standard monitors are assumed.

1.6.1.4Advanced Digital Display (ADD2/MEC) Card Support

The GMCH routes two multiplexed SDVO ports that are each capable of driving up to a 225 MHz pixel clock to the PCI Express x16 connector. When an ADD2/MEC card is detected, the Intel GMA 3100 graphics controller is enabled and the PCI Express x16 connector is configured for SDVO mode. SDVO mode enables the SDVO ports to be accessed by the ADD2/MEC card. An ADD2/MEC card can either be configured to support simultaneous display or can be configured to support dual independent display as an extended desktop configuration with different color depths and resolutions. ADD2/MEC cards can be designed to support the following configurations:

•Low Voltage Differential Signaling (LVDS)

•Single device operating in dual channel mode

•HDTV output

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