Microsoft® Products - Windows Server 2003       Windows® Server 2003 64-bit The 64-bit architecture is based on 64-bit extensions to the x86 instruction set and supports both AMD64 and Intel Extended Memory 64 Technology (EM64T), found in the latest Xeon and Pentium processors. Windows Server 2003 x64 Editions support this architecture.         Product Overview   Windows Server 2003 R2, Standard x64 Edition, is well-suited for high-performance computing (HPC) clusters, Terminal Services, Active Directory data stores larger than 2 GB, databases, business applications, Internet Information Services (IIS) 6.0, and memory-bound applications that do not require more than four processors. Windows Server 2003 R2, Standard x64 Edition, supports up to 32 GB of RAM on 1- to 4-way servers. Supported processors include: • AMD Opteron • AMD Athlon 64 • Intel Xeon with Intel EM64T • Intel Pentium with Intel EM64T       System Requirements   Component Requirement Minimum CPU x64 architecture-based computer with Intel Pentium or Xeon family with Intel Extended Memory 64 Technology, or AMD Opteron family, AMD Athlon 64 family, or compatible processor (Windows Server 2003 R2, Standard x64 Edition, supports up to four CPUs on one server) Minimum RAM 512 MB Multiprocessor Support Up to 4 Minimum Disk Space for Setup 4 GB       Product Information     Mainstream 64-Bit Computing Windows Server 2003 Standard x64 Edition, is well-suited for high-performance computing (HPC) clusters, Terminal Services, Active Directory data stores larger than 2 GB, databases, business applications, Internet Information Services (IIS) 6.0, and memory-bound applications that do not require more than four processors.   Maximum Flexibility Windows Server 2003 x64 Editions are designed for the new class of industry-standard x64 hardware. By running both 32-bit and 64-bit software at peak performance, this new platform will extend our customers' current investment in Windows-based technology. x64-based systems give IT professionals the option of running 32-bit Windows today, while moving to 64-bit Windows at their own pace. Once they have deployed the x64 versions of Windows, they can combine 32-bit and 64-bit software on the same system. Providing multiple paths to 64-bit computing maximizes flexibility and eases migration to this new architecture, as illustrated below.   Compatibility and Performance Early benchmark results show that Windows Server 2003 x64 Editions live up to the promise of running both 32-bit and 64-bit software at high speed. Consider the February 2005 SAP Sales and Distribution Two-Tier benchmark results that combine x64 versions of Windows and SAP R/3 with the 32-bit version of SQL Server 2000 Service Pack 4. In these tests, Windows Server 2003 x64 Editions posted the fastest scores among all 2-way servers,3 and the second-fastest score among all 4-way servers.   Microsoft®, Windows® XP Pro and Windows® Server 2003 are either registered trademarks or trademarks of Microsoft Corporation in the United States and / or other countries. www.howtotell.com