MODEL- AMDOSA275CBBOX     

    

FEATURES- Opteron Dual Core Server Processor 275                                                                   

       64-bit, 2.2 GHz Dual Core Server Processor.

       Each core has separate L1/L2 cache hierarchies, as well as the                                     

        integrated memory controller, HyperTransport technology, AMD 

        PowerNow! technology, or AMD's Cool'n'Quiet technology.

       Dual-Core AMD Opteron processors can be inserted into existing 940-

        pin sockets that support 90nm products. 

       AMD64 processors were designed from the start to add a second core.

       Port already existed on crossbar/SRI.

       One die with 2 CPU cores, each core has its own 1MB L2 cache.

       A BIOS update is all that is necessary to get a compatible system up 

        and running with dual-core processors.

       The 2 CPU cores leverage the same memory and HyperTransport 

        technology resources available in single-core processors.

* X86-64 Technology

   The AMD x86-64 architecture is an AMD innovation that extends x86, the 

   industry's most widely supported instruction set, and is designed to 

   enable 64-bit computing while remaining compatible with the existing x86 

   software infrastructure and industry experience.

   AMD's 64-bit strategy allows the latest in processor innovation to work 

   smoothly with the existing installed base of 32-bit applications and 

   operating systems, while establishing an installed base of systems that 

   are 64-bit capable.

   AMD X86-64 Technology enables the industry to advance software 

   development on all fronts, with x86 compatibility, while providing the 

   capability of delivering 64-bit technology benefits.

* AMD HyperTransport Technology

   HyperTransport technology is a high-speed, low latency, point-to-point 

   link designed to increase the communication speed between integrated 

   circuits in computers, servers, embedded systems, and networking and 

   telecommunications equipment up to 48 times faster than some existing 

   technologies. 

   HyperTransport technology helps reduce the number of buses in a system, 

   which can reduce system bottlenecks and enable today's faster 

   microprocessors to use system memory more efficiently in high-end 

   multiprocessor systems. 

   HyperTransport technology is designed to: 

    - Provide significantly more bandwidth than current technologies.

    - Use low-latency responses and low pin counts 

    - Maintain compatibility with legacy PC buses while being extensible to 

      new SNA (Systems Network Architecture) buses. 

    - Appear transparent to operating systems and offer little impact on 

      peripheral drivers. 

* Integrated DDR DRAM

   As processor microarchitecture capabilities have advanced, one of the 

   greatest performance limitations has become the system architectures 

   ability to provide sufficient low-latency memory bandwidth to the 

   processor core. The AMD Athlon 64 processor and the AMD Opteron

   processor directly addresses this bottleneck by integrating a DDR memory 

   controller into the processor, revolutionizing the way x86-based 

   processors access main memory. By running at the processor s core 

   frequency, an integrated memory controller greatly increases bandwidth 

   directly available to the processor at significantly reduced latencies. 

   The performance-enhancing effect is even more dramatic within an AMD 

   Opteron multiprocessing environment, because each additional processor 

   has its own memory controller thereby scaling over all memory bandwidth. 

   Features of Integrated DDR DRAM Memory Controller:

   - Available memory bandwidth scales with the number of processors added.

   - 128-bit wide integrated DDR DRAM memory controller capable of 

     supporting up to eight (8) registered DDR DIMMs per processor.

   - Available memory bandwidth up to 5.3GB/s (with PC2700 memory) per 

     processor.

 http://www.amd.com