FOR IMMEDIATE RELEASE
July 31, 2001

ATI now shipping XCLAIM? TV USB EDITION, $99 external TV tuner for
Macintosh systems

MARKHAM, Ontario ? ATI Technologies Inc. (TSE:ATY, NASDAQ: ATYT), a world
leader in the supply of graphics, video and multimedia solutions, announced
today that it is now shipping the highly anticipated XCLAIM? TV USB EDITION
external TV tuner to the Macintosh consumer market for just (USD) $99
manufacturer’s suggested retail price.

“ATI has always been committed to the Macintosh market and continues to
deliver great graphics products,” said Jewelle Schiedel-Webb, Director,
Desktop Marketing, ATI Technologies Inc. “XCLAIM TV USB EDITION, now on
store shelves, is yet another example of the innovative solutions ATI is
producing for Mac users.”

XCLAIM TV USB EDITION is ideal for Mac users to watch TV on Apple desktops
or mobile systems through an easy, single cable installation into the
computer’s USB (Universal Serial Bus) port. Features include: Channel
Preview for quick previews of “what’s on”; Hot Words to identify key words
and phrases in a desired TV program using the closed captioning stream; and
Parental Control to allow parents to lock in or lock out selected channels
and monitor or limit their children’s exposure to adult programming.

XCLAIM TV USB EDITION enables Mac users to easily multitask by watching TV
while downloading from the Internet or keeping an eye on a favorite TV show
while responding to e-mail messages.

Compatibility and system requirements
XCLAIM TV USB EDITION adds TV capabilities to Apple=AE systems that have a
USB port, including the iMac?, PowerBook=AE, iBook?, or G3/G4 Macintosh=AE. =
No
additional power supply is required. A cable TV signal or amplified antenna
is also required. The OS support includes Mac=AE OS 8.6 to 9.1 and QuickTime=
?
4.0 or higher.

Company background
Founded in 1985, ATI Technologies Inc. is a world leader in the supply of
graphics, video and multimedia solutions for personal computer and Mac
platforms. The pioneer, innovator and market leader in the graphics
industry, ATI provides cutting-edge technologies for the PC, set-top box,
game console and other consumer appliances markets. The Company has more
than 1,900 employees supporting customers from its headquarters in Markham,
Ontario, Canada, as well as from offices in Barbados, France, Germany, Hong
Kong, Ireland, Japan, Malaysia, the United Kingdom and the United States.
ATI common shares trade on NASDAQ (ATYT) and the Toronto Stock Exchange
(ATY).