SEP 22,2003       0:02 PACIFIC       3:02  EASTERN

( BW)(CA-SILICON-MOTION) Silicon Motion Announces SM501 Mobile
Multimedia Coprocessor; Enables Desktop-Quality, High-Resolution
Graphics and Video Acceleration for Mobile Devices

    Business Editors/High-Tech Writers

    SAN JOSE, Calif.--(BUSINESS WIRE)--Sept. 22, 2003--Silicon Motion
Inc., a leading supplier of multimedia storage and acceleration
solutions for mobile devices, today announced the SM501(TM), the first
entry in the company's new Voyager(TM) family of power-efficient,
high-performance mobile multimedia coprocessors. With the SM501,
Silicon Motion offers a multimedia companion chip targeted for mobile
devices that are optimized for increased battery life and
high-resolution desktop-equivalent graphics performance and
full-motion video. This combination of power and performance redefines
the mobile product segment by enabling previously unseen levels of
graphics and video acceleration for mobile and embedded devices.
    The SM501 is an ideal solution for a host of devices and
applications, including Video over IP, PDAs, videoconferencing,
convergence devices, car telematics and other non-PC products that
require the broadest range of multimedia performance and
functionality.
    In addition to a power-optimized, high-performance graphics and
video acceleration engine, SM501 provides key integrated features that
minimize external components and lower overall system cost. The SM501
supports all leading RISC CPU architectures in the mobile space
through a direct 32-bit CPU or standard PCI interface. The SM501
integrates numerous interfaces, including a TV encoder interface,
digital video input port (supports MPEG decoders or video capture
solutions), and an integrated USB 1.1 controller. Finally, the SM501
comes with integrated memory options eliminating cost and space
required for external memory.
    The SM501 provides complete embedded support by supplying a
complete range of embedded OS drivers, partnering with developers and
supplying a development kit to ease a customer's driver development
and enable fast time-to-market.
    "The introduction of the SM501 will redefine how design engineers
evaluate the capabilities and tradeoffs that have traditionally been
made for mobile products," said Michael Sanchez-Parodi, Vice President
of Sales & Marketing for Silicon Motion, Inc. "The incredible
energy-efficiency of our solution, combined with new levels of
graphics and multimedia acceleration, bring a new freedom to pursuing
cutting-edge, designs that still maintain great battery life and
excellent performance. We believe this is a real win for companies
that are seeking to redefine the mobile product segment with
multimedia and graphics capabilities previously unseen in this
category."

    Industry Quotes

    "By combining AMD's(TM) high-performance, low-power Geode(TM) and
Alchemy(TM) Solutions with Silicon Motion's expertise in low-power
graphics and multimedia, we are able to provide our customers with
leading-edge system solutions for the mobile multimedia space," said
Phil Pompa, Vice President of Marketing at AMD Personal Connectivity
Solutions group.
    "We are very impressed with both the functionality and the new
capabilities offered by the SM501 -- Silicon Motion is set to shake up
the established order in the mobile space with this product," said Jon
Peddie, Principal Analyst at Jon Peddie Associates (Tiburon, CA).
"Silicon Motion really thought through the issues that are specific to
the mobile product designer and the specific challenges they face. By
offering not just the SM501, but also some of the world's fastest
flash controllers, they offer a compelling argument to bring new
customers into their portfolio while demonstrating to existing
customers that they are a continued innovator in this market. This is
a company to watch."

    Pricing and Availability

    The SM501 is immediately available to customers in OEM quantities.
The base part is priced at $11.00 in 100K quantities.

    About Silicon Motion

    Silicon Motion delivers fast, low-power solutions that accelerate
the capture, use, storage and the retrieval of audio, video and images
for new mobile devices to provide a rich multimedia experience.
Silicon Motion delivers innovative and cost-effective solutions to its
worldwide customers, which include Intel, Lexmark NCR, NEC and Sharp.
Founded in 1995, Silicon Motion is a privately held, with headquarters
and development centers in Hsinchu, Taiwan and San Jose, CA and sales
offices located throughout the world.

    Silicon Motion is a registered trademark of Silicon Motion, Inc.
Other product or service names mentioned herein are the trademarks of
their respective owners.

    Editor's note: Images, logos and further press information on for
Silicon Motion may be found on the Horizon Communications Website at
http://www.horizonpr.com.

    --30--EL/sf

    CONTACT: Silicon Motion
             Julie Inouye, 408-501-5300
             jinouye@siliconmotion.com
             or
             Horizon Communications
             Jonathan Hirshon, 408-969-4888
             jh@horizonpr.com


REPEATS: New York 212-752-9600 or 800-221-2462; Boston 617-236-4266 or
         800-225-2030; SF 415-986-4422 or 800-227-0845; LA 310-820-9473