NEC POWERMATE 5100 - SERVICE, Service Manual

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4-18 System Board
Graphics Capabilities
The system contains a Rage IIC-compatible AGP controller mounted on the
system board that supports graphics-intensive, 3D applications. The system
board also contains 2 MB of SGRAM video memory. The AGP is plug and play
compatible, operates independently of the PCI bus, and supports 133-MHz data
transfer rates, allowing 500 MB of data to be transmitted per second.
The system also supports PCI graphics boards. A PCI graphics board installs in
one of the computer’s PCI expansion slots.
NEC CSD offers the ATI XPERT@Work 4-MB AGP PCI graphics board as a
Build-to-Order option. This board contains 4 MB of SGRAM.
To view photorealistic images, enhance presentation graphics, and view
TV-quality MPEG video, connect a standard VGA-compatible monitor to the
VGA monitor connector on the rear of the system or on the PCI graphics board.
Graphics Controller
The graphics controller is specifically designed for graphics-intensive
operations, including 3D and 2D effects, texture mapping, text and color pixel
amplification, and video acceleration. The controller minimizes bus traffic by
off-loading the tasks normally performed by the processor, providing 64-bit,
high resolution performance for demanding True Color displays and other
sophisticated graphics functions.
Motion Video Controller
The motion video controller integrates a Windows graphical user interface
(GUI) engine and motion video playback hardware.
Support includes:
„
MPEG-1 or MPEG-2
„
Video for Windows
„
Active Movie (Windows 95 only).
MPEG is a compression/decompression standard developed by a professional
video group called the Motion Picture Experts Group. MPEG produces full-
screen, 30-frames-per-second (fps), broadcast-quality digital video.
Graphics Support
With the ATI XPERT@Work PCI graphics board installed, the system supports
the following resolutions and refresh rates for systems with 4 MB of video
memory (see the following table).