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Intel® Xeon® Processor 7400 Series Datasheet 9

Introduction

1 Introduction

ALL INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE.

The Intel® Xeon® Processor 7400 Series is a four or six core product for multi-

processor servers. The processor is a single die based on Intel’s 45 nanometer process

technology combining high performance with the power efficiencies of a low-power

microarchitecture. The processor maintains the tradition of compatibility with IA-32

software. Some key features include on-die, 32 KB Level 1 instruction data cache per

core and 3 MB of shared Level 2 cache per two processor cores with Advanced Transfer

Cache Architecture. The Intel® Xeon® Processor 7400 Series will be available with

12 MB or 16 MB of on-die level 3 (L3) cache. The processor’s Data Prefetch Logic

speculatively fetches data to the L2 cache before an L1 cache requests occurs, resulting

in reduced bus cycle penalties and improved performance. The 1066 MTS 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.

Enhanced thermal and power management capabilities are implemented including

Intel® Thermal Monitor (TM1), Intel® Thermal Monitor 2 (TM2) and Enhanced Intel

SpeedStep® Technology. TM1 and TM2 provide efficient and effective cooling in high

temperature situations. Enhanced Intel SpeedStep Technology allows trade-offs to be

made between performance and power consumption. This may lower average power

consumption (in conjunction with OS support).

Processor features include Advanced Dynamic Execution, enhanced floating point and

multi-media units, Streaming SIMD Extensions 2 (SSE2), Streaming SIMD Extensions 3

(SSE3) and Streaming SIMD Extensions 4 (SSE4). SSE4 extends the Intel

instruction set to accelerate applications that involve graphics, video, 3D imaging, and

Web services. Advanced Dynamic Execution improves speculative execution and branch

prediction internal to the processor. The floating point and multi-media units include

128-bit wide registers and a separate register for data movement. SSE3 instructions

provide highly efficient double-precision floating point, SIMD integer, and memory

management operations.

The Intel® Xeon® Processor 7400 Series supports Intel

64 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 64 and its programming model can be found in the Intel

and IA-32 Intel

Architectures Software Developer's Manual.

In addition, the Intel® Xeon® Processor 7400 Series supports 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 and can thus

help improve the overall security of the system. Further details on Execute Disable can

be found at http://www.intel.com/cd/ids/developer/asmo-na/eng/149308.htm.

The Intel® Xeon® Processor 7400 Series supports Intel

Virtualization Technology for

hardware-assisted virtualization within the processor. Intel Virtualization Technology is

a set of hardware enhancements that can improve virtualization solutions. Intel

Virtualization Technology is used in conjunction with Virtual Machine Monitor software

enabling multiple, independent software environments inside a single platform. Further

details on Intel Virtualization Technology can be found at

http://developer.intel.com/technology/vt.

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