CP605
Functional Description
ID 25095, Rev. 07
© 2004 Kontron Modular Computers GmbH
Page 2 - 11
2509
5.07.UG.VC.041005/14145
9
2.5.4
Graphics Controller
The 845GV chipset includes a highly integrated graphics accelerator delivering high perfor-
mance 2D and 3D video capabilities. The internal graphics controller provides interfaces to a
standard progressive scan monitor.
Integrated 2D/3D Graphics:
• 3D Setup and Render Engine
• High Quality Texture Engine
• 3D Graphics Rasterization Enhancements
• Full 2D hardware acceleration
• Intel 845GV D.V.M. Technology graphics core
Intelligent Memory Management
• Integrated 350 MHz DAC
• Resolution up to 1920x1080 at 85 Hz and 2048x1536 at 60 Hz.
2.5.4.1
Video Memory Usage
The 845GV chipset supports the new Dynamic Video Memory Technology (DVMT). This new
technology ensures the most efficient use of all available memory for maximum 3D graphics
performance. DVMT dynamically responds to application requirements allocating display and
texturing memory resources as required.
The operating system requires up to 1 MB of system memory to support legacy VGA. System
properties will display up to 1 MB less than physical system memory available to the operating
system.
The graphics driver for the Intel 845GV configuration will request up to 64 MB of memory from
the OS. By reallocating memory to the system, memory is freed up for other applications when
not needed by the graphics subsystem. Thus, efficient memory usage is ensured for optimal
graphics and system memory performance.
2.5.4.2
Video Resolution
The 845GV has an integrated 350 MHz RAMDAC that can directly drive a progressive scan
analog monitor up to a resolution of 1920x1080 at 85 Hz and 2048x1536 at 60 Hz.
Table 2-8: Partial List of Display Modes Supported
RESOLUTION
COLOR RESOLUTION AT FREQUENCY
8-BIT
16-BIT
24-BIT
640x480
60, 75, 85,120
60, 75, 85,120
60, 75, 85,120
800x600
60, 75, 85,120
60, 75, 85,120
60, 75, 85,120
1024x768
60, 75, 85,120
60, 75, 85,120
60, 75, 85,100
1280x1024
60, 75, 85,120
60, 75, 85,120
60, 75, 85,100
1600x1200
60, 75, 85,100
60, 75, 85,100
60, 75, 85
1920 x 1440
60, 75
60, 75
--
2048 x 1536
60
60
--