MARKHAM, ONTARIO, Sep 26, 2006 (CCNMatthews via COMTEX News Network) -- Underlining the company's leadership in developing hardware and drivers to support Microsoft Corp.'s Windows Vista operating system, ATI Technologies Inc. (TSX:ATY)(NASDAQ:ATYT) today announced that its driver has been granted the graphics industry's first Windows Hardware Quality Lab (WHQL) certification for Windows Vista by Microsoft. WHQL certification sets a high bar for quality and reliability, and is considered essential by many business and home users. Windows Vista is the first version of the Microsoft operating system that requires hardware for 3D acceleration. WHQL certification reassures businesses and consumers that ATI graphics processors are fully ready to unlock the stunning graphical features of the powerful Windows Vista platform, including Windows Vista Premium(1). "ATI is working closely with Microsoft to ensure the best performance and most reliable Vista experience through our top-to-bottom line of graphics processors," said Ben Bar-Haim, vice president of software, ATI Technologies Inc. "With Windows Vista, 3D graphics now matter to everyone and ATI's WHQL certification gives businesses and consumers alike the confidence that their ATI system is ready for Vista." (1) Currently shipping ATI boards certified for Windows Vista Premium include the X1300, X1350, X1400, X1600, X1700, X1800, X1900 and X1950. About ATI Technologies ATI Technologies Inc. is a world leader in the design and manufacture of innovative 3D graphics, PC platform technologies and digital media silicon solutions. An industry pioneer since 1985, ATI is the world's foremost graphics processor unit (GPU) 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 device markets. With fiscal 2005 revenues of US $2.22 billion, ATI has more than 4,000 employees in the Americas, Europe and Asia. ATI common shares trade on NASDAQ (ATYT) and the Toronto Stock Exchange (ATY). Important Information Regarding Forward-looking Statements Certain statements in this news release, including but not limited to the features, performance, reliability and Windows Vista-readiness of ATI's hardware and drivers, and the importance of 3D graphics to consumers, may be considered "forward-looking". Such forward-looking statements are based on current expectations and assumptions and, accordingly, entail various risks and uncertainties. Assumptions applied in making, and potential risks that could cause actual results to differ materially from, such forward looking statements include, among others, software and hardware-related issues and conflicts, the development of new products or technologies, overall system performance and customer preferences and requirements. We therefore cannot provide any assurance that such forward-looking statements will materialize. We assume no obligation to update or revise any forward-looking statement, whether as a result of new information, future events or any other reason. Additional information concerning risks and uncertainties affecting our business and other factors that could cause actual results to differ materially from any forward-looking statement is contained in our filings with Canadian and U.S. securities regulatory authorities, including our 2005 Annual Information Form and 2005 Annual Report filed on SEDAR at www.sedar.com. Our Form 40-F and other filings we make with the U.S. Securities and Exchange Commission are available on EDGAR at www.sec.gov.