Silicon Graphics Pioneers New Era in Desktop Realism with Indigo2 IMPACT
Workstations

POWERFUL NEW SYSTEMS DEVELOPED WITH TEAM OF LEADING-EDGE CUSTOMERS,
SOFTWARE DEVELOPERS

Mountain View, Calif. (July 10, 1995) - Silicon Graphics, Inc. (NYSE:SGI)
today unveiled Indigo2 IMPACT, a new line of powerful 3D graphics and
imaging workstations that bring unequalled capabilities to the power
desktop. Introduced with new customized third-party software solutions,
Indigo2 IMPACT is the result of a new strategy for accelerated
collaboration between Silicon Graphics engineers and the company's
leading-edge customers and software developers.

Third-party applications written to take advantage of these workstations
provide the foundation for a new breed of solutions in the most demanding
visual computing environments, including computer-aided design and
engineering, geographic information systems, film and video production,
chemistry, game development and visual simulation.

"The demands of our visual computing customers consistently outpace the
evolutionary curve that drives traditional computing technology," said
Edward R. McCracken, chairman and CEO of Silicon Graphics. "By working in
parallel with these customers and our software developers, we have
articulated with Indigo2 IMPACT a powerful new strategy that accelerates
the delivery of next-generation solutions into our most challenging
markets."

Indigo2 IMPACT is the only graphics platform to offer both the world's
fastest 3D graphics and imaging performance on the desktop. The result is
a fusion of geometry and texturing capabilities that is generations ahead
of other desktop graphics systems. Indigo2 IMPACT features three times the
3D performance - and as much as 100 times the complex visualization power
- of Indigo2 Extreme, previously the world's fastest desktop graphics
workstation. With texture mapping, volume rendering, HDTV resolution and
professional digital media features, Indigo2 IMPACT continues the Indigo2
line's leadership in power desktop workstation solutions.

The Indigo2 IMPACT graphics subsystem is driven by eight new
custom-designed ASICs designed by Silicon Graphics and manufactured by
Toshiba to process 3D graphics, imaging and photorealistic textures. The
integrated imaging subsystem generates a record 100 million trilinear
interpolations per second for advanced visualization. This new Indigo2
IMPACT architecture also utilizes new Rambus 500MHz DRAM technology for
unprecedented fill rates.

IMPACT SOLUTIONS

With the launch of these new systems, more than a dozen third-party
companies unveiled software and hardware solutions designed specifically
for the Indigo2 IMPACT line. Many of these will be available as the first
IMPACT systems reach customers. All applications currently available for
Indigo2 will also run without modification on Indigo2 IMPACT systems and
benefit from the workstations' increased performance.

"The collaborative development of Indigo2 IMPACT has enabled a variety of
completely new applications - and a host of new features for leading
applications," said Warren Pratt, vice president and general manager of
Silicon Graphics' Interactive Systems Division. "Customers in several
industries now have a new class of solutions available to them, all of
which are based on the Indigo2 IMPACT platform."

IMPACT solutions providers include Alias/Wavefront, Inc., BIOSYM, CADCentre
Limited, Deneb Robotics, Discreet Logic, Fakespace, ERDAS, High
Techsplanations, Landmark Graphics Corporation, MK Technologies, MultiGen,
Paradigm Simulation, Structural Dynamics Research Corporation (SDRC) and
Vision International. These solutions providers are customizing their
products to optimize fully the new volume rendering and texture mapping
designed into the IMPACT system architecture.

AVAILABLITY

Indigo2 IMPACT is available in two models, High IMPACT for leading 3D and
imaging performance, and Maximum IMPACT, which offers twice the 3D and
imaging capabilities of High IMPACT. Indigo2 High IMPACT is available this
quarter with both the 200MHz MIPS R4400 and the new 250MHz MIPS R4400
microprocessors.

Indigo2 Maximum IMPACT and POWER Indigo2 Maximum IMPACT were also announced
with the new 250MHz MIPS R4400 microprocessor and the 75MHz R8000
microprocessor, respectively. All Indigo2 IMPACT base configurations
feature 64 MB of memory, a 2 GB system disk, 2 MB of cache and a 19-inch
monitor with 1,280-by-1,024 resolution.

Silicon Graphics, Inc. is the leading manufacturer of high-performance
visual computing systems. The company delivers interactive
three-dimensional graphics, digital media and multiprocessing
supercomputing technologies to technical, scientific and creative
professionals. Its subsidiary, MIPS Technologies, Inc., designs and
licenses the industry's leading RISC processor technology for the computer
systems and embedded control markets. Silicon Graphics has offices
worldwide and headquarters in Mountain View, California.
 
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