AMD, in collaboration with XenSource, today announced that
it will port Xen, the leading open-source virtualization package, to AMD64
technology. This industry-first x86-based 64-bit open-source virtualization
solution is planned to be available in the first half of 2005. The Xen
hypervisor, a high-performance, x86 virtual machine monitor (VMM), enables a
single machine to run multiple operating systems efficiently while maintaining
secure, resource guaranteed isolation between them. AMD64 technology-enabled Xen will be
designed to allow users to benefit from server virtualization in a secure and
flexible environment without having to sacrifice performance or functionality.

In order to enable more efficient server virtualization, AMD plans to introduce
in its next generation AMD64 processors "Pacifica" technology. Designed to
enhance virtualization at the processor level, and building on the success of
the AMD Opteron processor in the enterprise computing market, "Pacifica" will
provide underlying support for virtualization solutions. This will directly
benefit users by delivering IT resource utilization advantages through server
consolidation, legacy migration and increased security benefits. Feature
enhancements are also planned for future single-core and dual-core AMD64
processors that will further leverage the performance of 64-bit virtualization
software.

AMD, in collaboration with XenSource, today announced that
it will port Xen, the leading open-source virtualization package, to AMD64
technology. This industry-first x86-based 64-bit open-source virtualization
solution is planned to be available in the first half of 2005 and will be
unveiled at the LinuxWorld Conference & Expo, taking place February 15-17 in
Boston, Massachusetts.

"Developing state-of-the-art computing solutions that meet the needs of our
customers is at the heart of what AMD does," said Marty Seyer, vice president
and general manager of the Microprocessor Business Unit, Computation Products
Group, AMD. "We have paved the way in making pervasive 32- and 64-bit processing
mainstream with AMD64 technology, and this on-going work with Xen will allow us
to continue our industry leadership and broaden our portfolio of server
virtualization solutions."

XenSource, Inc. was recently founded to develop and support the industry’s
leading open-source infrastructure virtualization technology, Xen. The Xen
hypervisor, a high-performance, x86 virtual machine monitor (VMM), enables a
single machine to run multiple operating systems efficiently while maintaining
secure, resource guaranteed isolation between them.

By porting Xen to the AMD Opteron(TM) processor with Direct Connect
Architecture, AMD believes XenSource will provide an enterprise-class server
virtualization software technology that more broadly enables open-source
virtualization development and deployment. AMD64 technology-enabled Xen will be
designed to allow users to benefit from server virtualization in a secure and
flexible environment without having to sacrifice performance or functionality.

"AMD believes that AMD64 is the best platform to enable server virtualization
solutions due to the unique architecture benefits that Direct Connect
Architecture delivers," continued Seyer. "AMD understands that our customers
require access to these solutions to enable more effective IT resource
utilization. We are pleased that XenSource is committed to the ongoing
enhancement of the Xen open-source hypervisor, and working together we plan to
support the wide availability of Xen."

In order to enable more efficient server virtualization, AMD plans to introduce
in its next generation AMD64 processors "Pacifica" technology. Designed to
enhance virtualization at the processor level, and building on the success of
the AMD Opteron processor in the enterprise computing market, "Pacifica" will
provide underlying support for virtualization solutions. This will directly
benefit users by delivering IT resource utilization advantages through server
consolidation, legacy migration and increased security benefits. Feature
enhancements are also planned for future single-core and dual-core AMD64
processors that will further leverage the performance of 64-bit virtualization
software.

"We are delighted by AMD’s commitment to Xen," said Ian Pratt, fellow,
University of Cambridge Computer Laboratory and founder of XenSource. "The use
of Xen by companies such as AMD to develop new solutions for the enterprise will
accelerate Xen’s adoption and lead to the development of richer, more efficient
virtualization technologies. XenSource believes the continuing development of
AMD64 technology will enable more robust open source virtualization
alternatives, and we look forward to an evolving relationship with AMD."

AMD plans to maintain its leadership role within the open-source community by
working to support the Xen project and with XenSource, the stewards of the Xen
code base. This is designed to extend AMD64 technology further into the open
source world and continues to illustrate AMD’s commitment to the development of
open-source technology.