Sun X4100 0915ALEB30-HD 0915ALEB30 User Manual
Product codes
0915ALEB30
Sun Microsystems, Inc.
computing, including many high-performance computing (HPC) cluster applications
• Provide digital content creation capabilities such as computer-aided design (CAD), computer-aided manufacturing (CAM), and
computer-aided engineering (CAE), digital music production and video editing, and real-time media streaming solutions
• Require maximum performance for realistic and cinematic consumer experiences, including computer games, digital video,
and real-time collaboration.
x64 processors are designed to maintain full compatibility with x86 while providing the architectural enhancements that provide
world-class 64-bit performance. With the x64 ISA, relevant instructions and encodings have evolved to support 64-bits, increasing the
resources available to hardware and software. Major enhancements over legacy x86 include:
• Sixteen 64-bit general-purpose integer registers that quadruple the general purpose register space available to applications
and device drivers as compared to x86 systems
• Sixteen 128-bit XMM registers for enhanced multimedia performance to double the register space of any current SSE/SSE2
implementation
• Full 64-bit virtual address space with 40 bits of physical memory addressing that can support systems with up to 4 petabytes of
physical memory—65535 times the amount of RAM supported by 32-bit x86 systems
• 64 -bit operating systems to provide full, transparent, and simultaneous 32-bit and 64-bit platform application multitasking
x64 processors include HyperTransport Technology and are designed for flexibility and scalability. HyperTransport
Technology provides links-based multiprocessing, simplifying the design of multiprocessor workstations and servers. Compatibility
with x86 makes the x64 computing platform the first 64-bit platform designed to be compatible with
mainstream PC applications while offering world-class performance, making it suitable for solutions ranging from
consumer client PCs to high-performance clusters. The combination of flexibility and scalability reconciles the broad range of capa-
bility and performance requirements IT professionals face today.
AMD Direct Connect Architecture
AMD Direct Connect Architecture helps eliminate the bottlenecks inherent in a front-side bus by directly connecting the processors,
the memory controller, and the I/O to the CPU to enable overall system performance and efficiency. Directly connected CPUs pro-
vide more linear, symmetrical multiprocessing. A memory controller directly connected to a CPU optimizes memory performance.
I/O directly connected to a CPU provides more balanced throughput and performance. Dual-core processors extend the benefits of
the AMD Direct Connect Architecture by connecting two CPU cores to each other on one die to reduce latencies between those cores.
HyperTransport
TM
Technology
HyperTransport
TM
Technology is a high-speed, high-performance, point- to-point link for directly connecting integrated circuits. Hyper-
Transport Technology also directly connects the I/O to the processors at a rate of 8 GB/sec. Aggregate bandwidth per link, enabling a
peak bandwidth of 24 GB/sec. per processor. The AMD Opteron processor with HyperTransport Technology provides a scalable direct
connection between processors, I/O subsystems, and other chipsets. 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.
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