[Dave Baumann]

UMC Delivers 20 Millionth RADEON 9200 Chip for ATI Technologies
Chip Brings Advanced Graphic Features to Desktop and Laptop PCs

HSINCHU, Taiwan & MARKHAM, Ontario - Oct. 27, 2004 - UMC has delivered the 20 millionth RADEON 9200 chip to ATI Technologies Inc.. The chips, created with 0.15 micron process technology and manufactured on UMC's 300mm fab 12A in Tainan and 8F 200mm fab in Hsinchu, Taiwan, bring well-needed graphic capabilities to personal computers.
Fu Tai Liou, president of America Business Group at UMC noted, "ATI, a long-term partner of UMC, continues to demonstrate its leadership in the PC graphic chip industry. We are enthusiastic about the delivery of the 20 millionth RADEON 9200 chip, particularly as we reached this goal with high-yield performance and exceptionally low-defect densities, and on 300mm silicon."

Rick Bergman, senior vice president, PC Business Unit, ATI Technologies Inc., stated, "Working with UMC has enabled ATI to very successfully deliver world-beating graphics to price-conscious customers. UMC has helped us make the RADEON 9200 the solution of choice for a wide range of PCs worldwide."

About the RADEON 9200
The RADEON 9200 graphics chip is powered by an advanced quad-pipe rendering architecture and features a full suite of performance and image quality-enhancing technologies including advanced shader support and streaming video de-blocking capabilities. The RADEON 9200 products deliver an enhanced visual experience for personal computers.

About UMC
UMC is a leading global semiconductor foundry that manufactures advanced process ICs for applications spanning every major sector of the semiconductor industry. UMC delivers cutting-edge foundry technologies that enable sophisticated system-on-chip (SOC) designs, including 90nm copper, 0.13um copper, and mixed signal/RFCMOS. UMC is also a leader in 300mm manufacturing; Fab 12A in Taiwan and Singapore-based UMCi are both in volume production for a variety of customer products. UMC employs over 10,500 people worldwide and has offices in Taiwan, Japan, Singapore, Europe, and the United States. UMC can be found on the web at http://www.umc.com.