ATI's Mobility 9000 Power Lenovo E310 and A820 Notebooks

<p align="center">ATI's Award-Winning Mobile Graphics Processors Chosen by Legend to Power Lenovo
E310 and Lenovo A820 Notebooks
The Industry's Most Successful Mobile Graphics Chips Now Available in Designs by China's Largest Notebook PC Maker</p>MARKHAM, Ontario - May 22, 2003 - The world's number one notebook graphics supplier, ATI Technologies Inc. (NASDAQ:ATYT - News; TSX:ATY - News), today announced that major Chinese PC manufacturer Legend has selected ATI's industry-leading RADEON(TM) IGP 340M to power the Lenovo E360 notebook PC, and ATI's powerful, feature-rich MOBILITY(TM) RADEON(TM) 9000 mobile visual processor to power the Lenovo A820 notebook PC, which features Intel Centrino® Mobile Technology.

Both notebooks will begin shipping immediately.

"With the announcement of the Lenovo E360 and A820 notebook PCs, Legend has delivered two exciting new notebooks that provide outstanding graphics performance and features while maximizing portability and wireless connectivity for business users on the move," said Reuven Soraya, Director of Marketing, Mobile Business Unit, ATI Technologies.

Legend is one of the major vendors which deliver the thinnest wide-screen value notebooks on the market today "We commend their commitment to delivering excellent multimedia features and the latest display technology to notebook users at an affordable price."

"ATI's award-winning mobile graphics family has allowed Legend's new notebook series to maximize the user's visual experience while also prolonging battery life to increase productivity. ATI and Legend are working closely together to empower business notebook users with the world's most captivating mobile graphics technologies," said Xia Yang, General Manager of Legend's Notebook Business.

ATI's RADEON IGP 340M integrated graphics processor delivers unsurpassed performance to value-oriented mobile solutions, and supports Mobile Intel® Pentium® 4-M CPUs. Both integrated graphics solutions target the mainstream and value notebook PC markets.

Built to usher in the new generation of advanced digital functionality and deliver an unmatched visual experience even under the most extreme conditions, MOBILITY RADEON 9000 is the first notebook visual processor to include support for programmable pixel shaders, which breathe life into the newest and most advanced 3D games. MOBILITY RADEON 9000 also features the world's first mobile quad-pipe 3D architecture - four parallel rendering pipelines to power the most challenging games and 3D business multimedia applications with amazing speed.

About ATI Technologies
ATI Technologies Inc. is a world leader in the design and manufacture of innovative 3D graphics and digital media silicon solutions. An industry pioneer since 1985, ATI is the world's foremost visual processor unit (VPU) provider and is dedicated to deliver leading-edge performance solutions for the full range of PC and Mac desktop and notebook platforms, workstation, set-top and digital television, game console and handheld markets. With 2002 revenues in excess of US $1 billion, ATI has more than 1,900 employees in the Americas, Europe and Asia. ATI common shares trade on NASDAQ (ATYT) and the Toronto Stock Exchange (ATY).