Industry’s first DirectX 9 chipset for AMD platforms to drive HP's full-featured,PCI Express-enabled multimedia notebooks MARKHAM, ON - April 28, 2005 - ATI Technologies Inc. (NASDAQ:ATYT) (TSX:ATY), the global leader for notebook PC graphics, today announced that its Radeon® Xpress® 200M chipset for AMD platforms will be integrated into two new lines of full-featured multimedia consumer notebook PCs from HP - the HP Pavilion zv6000 series and the Compaq Presario R4000 series. The Radeon Xpress 200M platform enhances high-performance notebooks with industry-leading onboard DirectX 9 Radeon graphics and ATI’s innovative HyperMemory™ technology for superior graphics performance. The first to incorporate HyperMemory technology, the HP and Compaq notebooks provide consumers with a host of features that redefine on-the-road computing for digital entertainment, home office or educational needs. “Consumers are demanding higher levels of performance, power management and overall flexibility from their notebook PCs as the mainstream notebook market continues to rapidly expand,” said Reuven Soraya, Director of Marketing, Chipset Business Unit, ATI. “Our partnership with an industry leader such as HP enables us to extend our reach in the marketplace to deliver the only DX 9 Chipset for AMD platforms.” “We are pleased to be the first company to deliver notebook solutions with ATI’s HyperMemory technology to give our customers increased graphics performance,” said Jonathan Kaye, director of product marketing, Mobile Computing Global Business Unit, HP. “From digital entertainment to the home office and beyond, integrating Radeon Xpress 200M graphics into our notebooks enables a combination of rich visuals and high performance, presenting an extremely appealing proposition for our customers.” Featuring ATI’s pioneering HyperMemory technology, Radeon Xpress 200M for AMD is designed to build on the bandwidth of PCI Express, PC system memory and ATI software to deliver higher performance using lower amounts of local graphics memory. ATI is the leading supplier of integrated graphics chipsets for AMD mobile platforms. The HP Pavilion zv6000 series and Compaq Presario R4000 series notebook PCs support AMD Athlon™ 64 and Sempron™ processors and feature a 15.4-inch widescreen display, built-in stereo speakers, 4 USB 2.0 ports, and an S-Video (TV-Out) port. Select models include an integrated 6-in-1 media card reader and an ExpressCard 54/34 card slot for use of next-generation PC Card expansion products. These new notebooks are available now and can be purchased direct from www.hpshopping.com, by calling +1 888 999 4747 or by visiting thousands of popular retail locations.