Technology White Paper
- 1 -
CrossFire is an exciting new technology developed by ATI that allows the power of multiple Graphics
Processing Units to be combined in a single system.
Key benefits include:
• Up to two times the frame rates of a single GPU.
Ultimate Image Quality
• Up to twice the anti-aliasing quality of a single GPU, at full speed.
Improves the experience in any 3D application.
Simple upgrade for single GPU systems, driving single or multiple displays.
ATI CrossFire system with dual graphics cards
- 2 -
The world around us possesses an infinite level of detail. The process of creating virtual worlds that approach
this level of detail can consume practically any amount of computing power made available to it. However, by
breaking the task down into a finite set of elements (such as pixels and polygons), parallel processing can be
used to perform calculations on multiple elements at once.
The most straightforward way to drive processing
power upward is to add more transistors dedicated to
the task. However, the cost of a microprocessor starts
to increase exponentially as its size and transistor
count increases beyond a certain point. Performance,
on the other hand, does not necessarily continue to
increase at the same rate.
The goal of multi-processor technology is to allow
performance increases to scale linearly with cost,
independent of manufacturing process technology or
ATI is one of the pioneers of multi-processor technology
for graphics. In 1999, ATI introduced MAXX
technology, using a patented Alternate Frame Rendering
technique. The Rage Fury
MAXX graphics card
combined two Rage 128 PRO
processors on a single
board for high-end gaming. Despite the limitations
imposed by the AGP bus interface, it was able to
achieve over 50% higher frame rates in games like
Quake 3 at high resolutions.
ATI Rage Fury MAXX with dual
Rage 128 Pro graphics proces