Chapter 1: Introduction
5
1.2 Performance
The ATI Radeon™ HD 3800 series is a graphics accelerator card.
Computer functions like disk access and numerical calculation are not
accelerated by the ATI Radeon™ HD 3800 series. It is not unusual to
obtain an overall system speed increase of 2 times for graphics-heavy
applications after installing the ATI Radeon™ HD 3800 series. The
speed of pure graphics operations, like dragging objects with a mouse,
scrolling, and resizing, will be remarkably improved.
1.3 Software Compatibility
The key function of the ATI Radeon™ HD 3800 series is its VGA
compatibility. Unlike coprocessor-based, or IBM
®
8514A-type display
cards, the ATI Radeon™ HD 3800 series is 100% compatible with your
DOS computer. This means that all DOS software will run correctly with
the ATI Radeon™ HD 3800 series VGA without modification.
The VGA compatibility includes backward compatibility with the EGA,
CGA and MDA standards. All DOS software will include drivers for at
least one of these display types and will be fully compatible with the ATI
Radeon™ HD 3800 series. The ATI Radeon™ HD 3800 series is also
fully compatible with VESA BIOS extensions for resolutions higher than
640x480.
When the ATI Radeon™ HD 3800 series is used in VGA, backward
compatibility, the graphics engine of the ATI Radeon™ HD 3800 series
card is not used. The speed in these modes will be comparable to the
fastest type of standard VGA card.
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