Xbox 360 redefines the visual experience: unparalleled performance drives new levels of realism and immersion E3 - LOS ANGELES, CA – May 17, 2005 – The era of HD gaming is in full effect at E3 2005 with ATI Technologies Inc. (TSX: ATY, NASDAQ:ATYT) showcasing the next-generation of visual entertainment on Xbox 360. Powered by a custom graphics processor from ATI, Xbox 360’s elegant design combines raw power and gaming performance to deliver the absolute best console experience. Developed from the ground up for the HD world, the graphics processor in Xbox 360 provides unparalleled computational power and memory bandwidth, rendering games with striking image quality and immersive realism. Nearly two years in the making, the graphics technology behind Xbox 360 represents a quantum leap in technology and provides tremendous amounts of headroom for the HD gaming generation. At E3 2005 (booth 600), ATI Technologies Inc. will demonstrate an early glimpse of where Xbox 360 graphics are going with a next-generation demo featuring Ruby. In addition to the Ruby demo, the ATI booth at E3 2005 will show off some of the industry’s most anticipated new game titles running on an award-winning portfolio of PC and consumer products.