[Dave Baumann]

Workstation OEMs and System Integrators Select ATI's PCI Express(tm) FireGL(tm) Graphics Accelerators
High-end Performance and PCI Express Technology Combine to Make FireGL Visualization Series Graphics of Choice

MARKHAM, Ontario/ Munich, Germany - June 30, 2004 - ATI Technologies Inc. (TSX: ATY, NASDAQ: ATYT) today announces that FireGL(tm) graphics accelerators have been selected by over a dozen industry leading OEMs and Workstation System Integrators (WSIs) for their new PCI Express based workstations. Those who have selected from the FireGL Visualization series include HP, Alienware, Boxx, Coastline, Colfax, Leading Technologies, Maxivision, Polywell, Xi Computer and other tier-1 OEMs. ATI's FireGL Visualization series of products with the bandwidth and performance capabilities inherent in PCI Express, accelerate the most demanding of high-end 3D applications, such as Catia®, Maya®, Softimage|XSI® and SolidWorks®.

"At this important industry inflection point, ATI's superior solution for workstation graphics is a natural choice for OEMs and workstation system integrators," said Dinesh Sharma, Director, Workstation Products, ATI. "Our strength in being the only vendor with true PCI Express results in the highest quality product, enabling customers to take full advantage of the new PCI Express bandwidth, in both upstream and bandwidth directions simultaneously."

"Our customers look for an ideal configuration and graphics when purchasing a new workstation, and we're pleased to be able to provide them with the top of the line solution with ATI's FireGL workstation graphics accelerators," said Gautam Shah, President of Colfax International. "This superior solution provides our customers all the benefits of PCI Express, and is certified for all the leading 3D applications that our customers need."

"After evaluating various PCI Express workstation options, we believe that ATI's FireGL product line up will offer our customers the best combination of features, performance and value," said Bruce Imsand, CEO of Maxivision. "ATI's successful execution of PCI Express provides our customers with the most cost-effective, yet powerful solution available for the workstation market."

The FireGL Visualization series includes the entry-level FireGL(tm) V3100 with 128 MB of memory, 4 pixel pipelines and 2 vertex processors; the FireGL(tm) V3200 which adds stereo 3D capabilities; the mid-range FireGL(tm) V5100 with 128MB of memory, 12 pixel pipelines, 6 vertex processors and stereo 3D output and the high end FireGL(tm) V7100 with 256MB of GDDR3 memory, 16 pixel pipelines, 6 geometry engines, stereo 3D and dual link capabilities. ATI's FireGL products feature dual display output and are supported by a unified driver, which is tested and certified by professional 3D ISV partners, making system administration and upgrades cost effective and simple. All FireGL products come with a three year warranty and unlimited direct access to a dedicated workstation technical support team.

For more information about ATI's FireGL workstation graphics products, please visit www.ati.com/FireGL

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 2003 revenues in excess of US $1.3 billion, ATI has more than 2,500 employees in the Americas, Europe and Asia. ATI common shares trade on NASDAQ (ATYT) and the Toronto Stock Exchange (ATY).