Introduction
1
Introduction
The Dual-Core Intel
®
Xeon
®
Processor 5000 series are Intel dual core products for dual
processor (DP) servers and workstations. The Dual-Core Intel Xeon Processor 5000
series are 64-bit server/workstation processors utilizing two physical Intel NetBurst
®
microarchitecture cores in one package. The Dual-Core Intel Xeon Processor 5000
series include enhancements to the Intel NetBurst microarchitecture while maintaining
the tradition of compatibility with IA-32 software. Some key features include Hyper
Pipelined Technology and an Execution Trace Cache. Hyper Pipelined Technology
includes a multi-stage pipeline depth, allowing the processor to reach higher core
frequencies. The Dual-Core Intel Xeon Processor 5000 series contain a total of 4 MB of
L2 Advanced Transfer Cache, 2 MB per core. The 1066 MHz Front Side Bus (FSB) is a
quad-pumped bus running off a 266 MHz system clock making 8.5 GBytes per second
data transfer rates possible. The 667 MHz Front Side Bus (FSB) is a quad-pumped bus
running off a 166 MHz system clock making 5.3 GBytes per second data transfer rates
possible.
In addition, enhanced thermal and power management capabilities are implemented
including Thermal Monitor (TM1) and Enhanced Intel SpeedStep
®
technology. These
technologies are targeted for dual processor (DP) systems in enterprise environments.
TM1 provides efficient and effective cooling in high temperature situations. Enhanced
Intel SpeedStep technology provides power management capabilities to servers and
workstations.
The Dual-Core Intel Xeon Processor 5000 series also include Hyper-Threading
Technology (HT Technology) resulting in four logical processors per package. This
feature allows multi-threaded applications to execute more than one thread per
physical processor core, increasing the throughput of applications and enabling
improved scaling for server and workstation workloads. More information on Hyper-
Threading Technology can be found at
http://www.intel.com/technology/hyperthread.
Other features within the Intel NetBurst microarchitecture include Advanced Dynamic
Execution, Advanced Transfer Cache, enhanced floating point and multi-media units,
and Streaming SIMD Extensions 3 (SSE3). Advanced Dynamic Execution improves
speculative execution and branch prediction internal to the processor. The Advanced
Transfer Cache in each core is a 2 MB level 2 (L2) cache. The floating point and multi-
media units include 128-bit wide registers and a separate register for data movement.
Streaming SIMD3 (SSE3) instructions provide highly efficient double-precision floating
point, SIMD integer, and memory management operations. Other processor
enhancements include core frequency improvements and microarchitectural
improvements.
The Dual-Core Intel Xeon Processor 5000 series support Intel
®
Extended Memory 64
Technology (Intel
®
EM64T) as an enhancement to Intel's IA-32 architecture. This
enhancement allows the processor to execute operating systems and applications
written to take advantage of the 64-bit extension technology. Further details on Intel
Extended Memory 64 Technology and its programming model can be found in the
64-bit Extension Technology Software Developer's Guide
at
http://developer.intel.com/
technology/64bitextensions/.
In addition, the Dual-Core Intel Xeon Processor 5000 series support the Execute
Disable Bit functionality. When used in conjunction with a supporting operating system,
Execute Disable allows memory to be marked as executable or non executable. This
feature can prevent some classes of viruses that exploit buffer overrun vulnerabilities
Dual-Core Intel® Xeon® Processor 5000 Series Datasheet
9
INTEL [ INTEL CORPORATION ]
