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KTD-00781-A
2.5
KTG41 Graphics Subsystem
The KTG41 use the Intel G41 chipset for the graphical control. This chipset contains two separate, mutually
exclusive graphics options. Either the GMA X4500 graphics controller (contained within the AC82G41
GMCH) is used, or a PCI Express x16 add-in card can be used. When a PCI Expressx16 add-in card is
installed, the GMA X4500 graphics controller is disabled.
2.5.1 Intel® GMA X4500
Features of the Intel GMA (Graphic Media Accelerator) X4500 graphics controller includes:
•
High quality graphics engine supporting
DX10* and OpenGL* 2.0 compliant
o
Core frequency of 400 MHz
o
1.6 GP/s pixel rate
o
High-Quality 3D Setup and Render Engine
o
High-Quality Texture Engine
o
3D Graphics Rendering Enhancements
o
2D Graphics
o
Video Overlay
o
Multiple Overlay Functionality
o
•
Analogue Display (CRT)
350 MHz Integrated 24-bit RAMDAC
o
Up to 2048x1536 @ 75 Hz refresh
o
Hardware Colour Cursor Support
o
DDC2B Compliant Interface
o
•
Digital Display
SDVO ports in single mode supported
o
200 MHz dot clock on each 12-bit interface
o
Flat panels up to 2048x1536 @ 60 Hz or digital CRT/HDTV at 1400x1050 @ 85 Hz
o
Dual independent display options with digital display
o
Multiplexed digital display channels (supported with ADD2 Card)
o
Supports TMDS transmitters or TV-Out encoders
o
ADD2/MEC card uses PCI Express graphics x16 connector
o
Two channels multiplexed with PCI Express* Graphics port
o
Supports Hot-Plug and Display
o
•
Dynamic Video Memory Technology (DVMT 5.0) support up to 352 MB
2.5.2 DVMT 5.0 support
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 352 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) 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.
IMPORTANT: The use of DVMT requires driver support by the operating system.
KTG41 family
Page 17 of 78
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