This book constitutes the refereed proceedings of the 11th Asia-Pacific Computer Systems Architecture Conference, ACSAC 2006, held in Shanghai in September 2006.

The 60 revised full papers presented together with 3 invited lectures were carefully reviewed and selected from numerous submissions and they address issues as processor and network design, reconfigurable computing and operating systems, including both low- level design issues in hardware and systems. There are papers describing large and significant computer-based infrastructure projects and also many papers which reflect the move to concurrency on chip in multi-core devices and many more are concerned with the significant problems industry will face with stricter budgets in power dissipation.