The following overview and installation instructions are for professional system integrators building PCs that use Intel® Pentium® 4 processors in the 775-land package with industry-accepted motherboards, chassis, and peripherals. It contains technical information intended to aid in system integration. Boxed Intel Pentium 4 processor product information can also be found in the processor Product Brief, Frequently Asked Questions, and Selling Guide for the Pentium 4 processor. (The term "Pentium 4 processors in the 775-land package" refers to Pentium 4 processors in the Flip-Chip Land Grid Array (FC-LGA4) package.) Access Platform Compatibility Guide information here.
Table of Contents
The Boxed Intel® Pentium® 4 Processor in the 775-Land PackagePlatform Component SelectionIntegrating Systems Based on Intel Pentium 4 Processors in the 775-Land Package- Boxed Processor Installation
- Maintaining and Upgrading Systems Based on Intel Pentium 4 Processors in the 775-Land Package
- Boxed Processor Removal
The Boxed Intel® Pentium® 4 Processor in the 775-Land Package
Processor Overview
The Intel Pentium 4 processor is based on the Intel® NetBurst™ micro-architecture and includes several new performance enhancing features.
Hyper-Threading Technology:
The Pentium 4 processor supporting Hyper-Threading Technology increases processor efficiency by executing more than one instruction thread at a time. This technology is designed to deliver superior performance with multi-threaded applications and in multi-tasking environments.Enhanced Intel SpeedStep® technology (EIST):
When running applications that demand less processor power, the Operating System will slow the processor clock speed down. Enabling of EIST can lead to power efficient systems that can run quieter and cooler3. (This feature only available on certain Intel processors.) See the "EIST How To," document for specific requirements and integration procedures.Intel® 645:
The enhancement enables the desktop processor platform to access larger amounts of memory. With appropriate 64 bit supporting hardware and software, platforms based on an Intel processor supporting Intel® 64 can enable use of extended virtual and physical memory. Intel 64 provides flexibility for 32 bit now and future software that supports 64 bit computing. (This feature only available on certain Intel processors.) See the "Intel® 64 How to," document for specific requirements and integration procedures.Hyper Pipelined Technology:
A deeper pipeline allows instructions inside the processor to be queued and executed at the fastest possible rate. Eleven pipeline stages have been added to the processors to accommodate the bigger L1 and L2 cache sizes. The deep pipelines will provide headroom for additional frequency and performance scaling improvements.Streaming SIMD Extensions:
Thirteen additional instructions have been added to the existing 144 instructions, including SIMD double precision floating-point, SIMD 128-bit integer, and cache and memory management instructions. SSE3 enhances performance to accelerate the most demanding aspects of Internet computing, as well as video, speech, encryption, imaging, and non-threaded workstation applications.800-MHz Intel® NetBurst™ Micro-Architecture System Bus:
High speed system bus transfer rate that help speed the transfer of information from the processor to the rest of the system, improving throughput and performance. Also provides the user with the flexibility to take advantage of higher system memory bandwidth.Advanced Dynamic Execution:
This characteristic extends the dynamic execution features found in previous-generation P6 microarchitecture. Improved branch prediction accelerates the flow of work to the processor and helps overcome the deeper pipeline. Very deep, out-of-order speculative execution carries out over 100 instructions speculatively, ensuring that the processor’s superscalar execution units remain busy and deliver better performance overall.Enhanced Floating Point/Multimedia Unit:
A 128-bit floating-point port and a second port for data movement enable smooth lifelike 3D and graphics.65nm Process Technology:
The 65nm process technology is the latest in Intel manufacturing and technology providing industry-leading density, performance and power reduction features. Intel's leading strained silicon technology, first implemented in 90-nm process technology is further enhanced in the 65nm technology.90nm Process Technology:
The 90nm process technology is the previous generation technology in Intel manufacturing and technology leadership allowing for transistor advantages such as strained silicon lattice to deliver faster transistors and potentially increase performance.1 MB L2 Advanced Transfer Cache
Enhances performance by providing fast access to heavily used data and instructions.Execution Trace Cache
Advanced L1 instruction cache removes decoder pipeline latency, and caches "decoded" instructions, thus improving efficiency and hit rate to cached instructions. Greatly improves instruction cache efficiency, maximizing performance on frequently used sections of software code.Rapid Execution Engine
Integer Arithmetic Logic Unit (ALU) clocked at twice the core frequency provides four ALUs of computing bandwidth and allows lower latency execution increasing performance for certain integer operations.Execute Disable Bit
Execute Disable Bit allows the processor to classify areas in memory by where application code can execute and where it cannot. (This feature only available on certain Intel processors).Enhance Halt State
Enhance Halt State is activated when the Halt instruction is executed by the processor. Halt is executed when the OS goes into idle mode which lowers frequency and voltage (Dynamic VID) to reduce power consumption. (This feature only available on certain Intel processors).Intel® NetBurst™ micro-architecture
Intel® NetBurst micro-architecture enables the Pentium 4 processor to achieve breakthrough performance for visual computing, concurrent application environments, and the future of the Internet.
Included with the Boxed Intel® Pentium® 4 Processor in the 775-land Package
- Intel® Pentium® 4 Processor in the 775-land package
- Intel Designed Thermal Solution (includes high quality variable speed fan heatsink and attachment assembly)
- Thermal interface material (attached to the heatsink)
- Installation Instructions and Certificate of Authenticity
- Intel Inside® logo label
The Pentium 4 processor in the 775-land package refers to Pentium 4 processors in the 775-land Flip-Chip Land Grid Array (FC-LGA4) package with an Integrated Heat Spreader (IHS) that aids in heat dissipation to a properly attached fan heatsink.
| Figure 1. |
Top View |
Bottom View |
Figure 1. Intel® Pentium® 4 Processor in the 775-land FC-LGA4 Package
As processor power has increased, required thermal solutions have generated more noise. Intel has added an option to the boxed processor that allows system integrators to have a quieter system in the most common usage.
Previous generation boxed Intel fan heatsinks contain built in circuitry to control fan speed. They have a thermistor in the fan hub which measures the chassis ambient air temperature. The fan circuitry then adjusts the fan speed to properly cool the processor at the slowest speed allowable. If the chassis ambient temperature is cool then the fan will run slower and quieter. If the ambient temperature is hot, then the fan will run faster.
This fan was designed to work in a variety of operating conditions so it had to be designed in such a way that it would cool the processor when running at its maximum power at any given ambient temperature (up to 38ºC). In normal operating environments the processor is running at its maximum power only a fraction of the time.
Under most conditions the fan is spinning faster and louder than necessary. (The fan heatsink is required to work this way so that it will properly cool the CPU in all specified operating environments.)
Intel has been aware of customer concerns over increasing fan noise. Intel has now designed a new fan speed control technology to take advantage of the fact that the processor is not always running at its maximum power. This was done by basing the fan speed control on actual CPU temperature and power usage.
The speed of the new fan heatsink is controlled by the additional 4th wire of the fan cable. (The new technology is sometimes referred to as "4-wire fan speed control.")
The additional 4th wire sends a signal from the motherboard to the fan heatsink to control its speed. There is a thermal diode in the processor which measures actual CPU temperature. The processor sends information to the motherboard about its specific thermal requirements and the actual processor temperature. The motherboard then uses this information to optimally control the speed of the processor fan.
Figure 2 shows the current fan speed curve (Red) of a 3-wire, fan heatsink-thermistor based fan speed control. The additional curves in blue represent fan operations at lower CPU temperature and power consumption levels based on the 4-wire fan speed control fan heatsink.
Figure 2. Internal Chassis Temperature Affect On Boxed Processor Variable Speed Fan Heatsink Noise
The, "Max Temp," in Figure 2 represents the upper set point or worse case ambient temperature of 38°C. The, "Min Temp," represents the lower set point or the slowest possible fan speed at an ambient temperature of 30°C. (Also see Table 1.)
The acoustic benefits of the 4-wire based fan speed control may vary depending on the specific motherboard implementation. (The acoustic benefits are reliant on the motherboard design.)
If the new 4-pin active fan heat sink solution is connected to an older 3-pin motherboard CPU fan header it will default back to a fan heatsink thermistor controlled mode, allowing compatibility with existing 3-pin motherboard designs. The fan heatsink has onboard circuitry that will control the fan speed based on internal chassis ambient temperature.
A 4-wire fan does not guarantee a quieter system. If the processor is being used in a hot environment and under heavy loads the fan will have to run fast enough to properly cool the processor. The internal chassis temperature is required to be maintained at 38°C (or lower). Selecting the correct chassis (see Chassis Selection) and verifying proper thermal management is critical for integrating a high quality boxed Intel Pentium 4 processor-based system (see Thermal Management for Boxed Intel Pentium 4 Processor-Based Systems.)
Table 1. Boxed Processor Variable Fan Heatsink Set Points
| For Boxed Intel® Pentium® 4 Processors in the 775-land package | |
| Internal Chassis Temperature (°C) | Boxed Processor Fan Heatsink Set Points |
X <= 301 | Lower Set Point: Fan speed constant at lowest fan speed. Recommended temperature for nominal operating environment. |
Y = 34 | Recommended maximum internal chassis temperature for boxed Intel Pentium 4 processor-based systems. |
Z >= 381 | Higher Set Point: Fan speed constant at highest fan speed. |
1 Set point variance is approximately ±1°C from fan heatsink to fan heatsink.
Identifying a Boxed Processor
Boxed processor test specifications (or S-Specs) marked on the integrated heat spreader of the Pentium 4 processor identify specific information about the processor. Using the S-Spec Reference Table (PDF) or the Processor Spec Finder and the information marked on the processor, a system integrator can verify the appropriate processor number, speed rating, stepping, lot number, serial number and other important information about the processor. The numbers marked on the processor should match the numbers on the processor box label (Figure 3).Figure 3. Processor Box Label
Larger View >
Once the boxed processor is installed into a system, the fan heatsink covers the integrated heat spreader and all the markings on the processor. The label on the box of the boxed processor (that has the processor number, speed information, test specification, and lot number) should be photo copied and taped to the inside of the chassis for reference. This will allow quick access to the information that is no longer available on the top of the processor when the heatsink is installed. If a system's processor is later upgraded or replaced causing the photocopied information inside the chassis to have incorrect information, the photocopy should be replaced, removed or visibly marked as obsolete to avoid confusion.
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Motherboard Selection
Motherboards used with the Pentium 4 processor in the 775-land package must specifically support the Intel NetBurst micro-architecture 800MHz system bus. Also, the Pentium 4 processor in the 775-land package must be used in a motherboard with a Land Grid Array 775 (LGA775) socket. It is important to verify that the specific motherboard model and revision support the specific Pentium 4 processor number being used.
Motherboards that support the Pentium 4 processor and are based on the ATX form factor specification utilize power supplies that follow the ATX12V power supply design guide. Similarly, microATX form factor motherboards that support the Pentium 4 processor utilize power supplies that follow the ATX12V or SFX12V power supply design guides. Both the ATX12V and SFX12V power supply design guides are available on the Form Factors website.
Platform Compatibility Guide
To reduce confusion in proper motherboard selection, Intel has created a compatibility naming convention called, "Platform Compatibility Guide." "04B," and "04A," will be the first Platform Compatibility Guides to be introduced. (Future specifications will use similar Platform Compatibility Guides where the first two digits represent the year the Guide is introduced and the 3rd digit stands for the market segment. "A," applies to processors that fall in the Mainstream 2, 1 and Value market segments; where "B," applies to processors that fall in the Performance and Mainstream 3 market segments. Intel product dealers can view the Desktop Processor Roadmap (PDF) which shows which processors fall under the various market segments. Additionally, Platform Compatibility Guide information for a specific processor can be found on the Processor Spec Finder.)
All of the Boxed Intel® Pentium® 4 processors in the FC-LGA4 package will have markings on the box with either, "Platform Compatibility 04B," or, "Platform Compatibility 04A." See figure 4 for example of how processors will be marked.
| Figure 4. Platform Compatibility Guide Location On Box |
Motherboards that support processors with the Platform Compatibility Guide (PCG) 04B specification will support processors with the PCG 04B and 04A. (In other words, Motherboards designed to PCG 04B are backwards compatible with 04A processors.) Motherboards that only support processors with the PCG 04A will not support PCG 04B processors. These motherboards have been designed to provide customers with a lower cost platform.
Platform Compatibility Guides do not promise compatibility. Platform Compatibility Guides specify likely motherboard compatibility with processor electrical requirements. Compatible BIOS, drivers, hardware, and operating system are required.
Some boxed Intel processors in the 775-land package may not indicate a Platform Compatibility Guide such as the boxed Intel® Pentium® 4 processor with HT Technology Extreme Edition. This processor has additional electrical requirements that are not captured in the Platform Compatibility Guides.
Additionally, a BIOS upgrade may be required in order to properly recognize and initialize the latest stepping of the Pentium 4 processor. Motherboards must also meet the electrical and mechanical specifications of the Pentium 4 processor, as documented in the Datasheet. Intel tests motherboards for basic compatibility and lists passing boards on the Tested Motherboard List for the Boxed Intel Pentium 4 processor.
Motherboard Compatibility for Intel® Pentium® 4 Processors Supporting Hyper-Threading Technology2:
Ensure that you are using a motherboard that is compatible with the Pentium 4 processor supporting Hyper-Threading Technology. Enabling HT Technology functionality for your system requires a Pentium 4 processor supporting HT Technology, a motherboard that supports HT Technology (a BIOS upgrade may be required in order to enable HT Technology support), and an operating system that includes optimizations for HT Technology (Windows* XP or certain versions of Linux*). Consult your motherboard manufacturer for compatibility.
For additional information on integrating systems based on the Pentium 4 processor supporting Hyper-Threading Technology, refer to the Integration Overview for Systems Based on the Intel Pentium 4 processor Supporting Hyper-Threading Technology.
Motherboard Compatibility for Intel® Pentium® 4 Processors with 65nm technology:
Processors with 65nm technology require motherboards with specific versions. This is especially important for Intel® 915 chipset based boards and third party chipset based boards. Support of these processors on later chipsets may require a BIOS update.
Motherboard Compatibility for Intel® Pentium® 4 Processors with support for Enhanced Intel SpeedStep® technology (EIST):
See the "EIST How To," document for specific requirements and integration procedures.
Motherboard Compatibility for Intel® Pentium® 4 Processors with support for Intel® 64:
See the "Intel® 64 How to," document for specific requirements and integration procedures.
Motherboard Compatibility for the Intel® Pentium® 4 processor with HT Technology2 Extreme Edition:
Ensure that you are using a motherboard that is compatible with the Pentium 4 processor with Hyper-Threading Technology Extreme Edition in the 775-land package. Enabling HT Technology functionality for your system requires a Pentium 4 processor supporting HT Technology, a motherboard that supports HT Technology (a BIOS upgrade may be required in order to enable HT Technology support), and an operating system that includes optimizations for HT Technology (Windows* XP or certain versions of Linux*). Consult your motherboard manufacturer for compatibility.
The Pentium 4 processor with Hyper-Threading Technology Extreme Edition in the 775-land package requires a motherboard that meets more stringent electrical requirements. For this reason, the outside of the box wil not include Platform Compatibility Guide information. Consult your motherboard manufacturer for compatibility.
Fan Heatsink Support
The boxed processor includes a high quality unattached fan heatsink specifically designed to provide sufficient cooling to the Pentium 4 processor when used in a suitable chassis environment. The fan power cable must be connected to the motherboard power header as shown in the processor installation notes (included in the boxed processor package).
The motherboard 4-pin header uses two pins to supply +12V (power) and GND (ground). The fan uses the third pin to transmit fan-speed information to motherboards. The fourth pin allows motherboards that support 4-wire fan-speed control to control the fan speed based on actual processor power consumption. The 4-pin connector is keyed to be backwards compatible with a 3-pin motherboard header. The motherboard must have a 4-pin or 3-pin fan power header located close to the socket.
Note: Refer to your motherboard manual for the location of the CPU fan power header.
Chassis Selection
Systems based on the Pentium 4 processor in the 775-land package must use a chassis that comply with the ATX specification (revision 2.01 or later) or microATX specification (revision 1.0 or later), depending on the motherboard form factor. Intel recommends system integrators using ATX form factor motherboards to choose a chassis that complies with the ATX specification (revision 2.01 or later). Likewise, system integrators using microATX form factor motherboards should choose a chassis that complies with the microATX specification (1.0 or later).
The chassis must also support a lower internal ambient temperature than many standard ATX and microATX desktop chassis. The internal chassis temperature for systems based on Pentium 4 processors in the 775-land package should not exceed 38°C when the chassis is used in a maximum expected room temperature of 35°C. Most chassis designed for the Pentium 4 processor use extra internal chassis fans to improve airflow and many include ducting to bring cool air directly to the processor fan heatsink. Intel tests chassis with the boxed Intel Pentium 4 processor and the Intel® Desktop Boards for minimum thermal requirements. These chassis meet Intel's processor specifications with the Intel Desktop Boards. It is strongly recommended that system integrators perform thermal testing on the chassis selected for each configuration of Pentium 4 processor-based systems, even when using a chassis on the tested chassis list.
Power Supply Selection
Power supplies must comply with either the ATX12V or SFX12V design guidelines (see the Form Factors website, for details) and supply additional current on the 12V power rail through a 2x2 connector. All Pentium 4 processor-based systems require either the standard 2x10, 20-pin ATX power connector or the new 24 pin ATX power connecter as well as the 2x2, 4-pin 12V connector. Consult the motherboard documentation to determine power supply requirements. Intel tests power supplies to determine a minimum level of electrical compliance. Consult the Tested Power Supply List for more information.
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Integrating Systems Based on Intel Pentium 4 Processors in the 775-land Package
Motherboards supporting the boxed Intel Pentium 4 processor include a manual with installation instructions. Consult this manual in addition to the boxed processor manual before building a Pentium 4 processor-based system. The boxed Intel Pentium 4 processor in the 775-land package integration video also shows the installation process using a boxed Intel Desktop Board. In addition, the following information can aid system integrators in successfully integrating a system based on the boxed Intel Pentium 4 processor in the 775-land package.
Note: When integrating a Pentium 4 processor-based system, be sure to take the proper electrostatic discharge (ESD) precautions. Consider using ground straps, gloves, ESD mats, or other protective measures to avoid damaging the processor and other electrical components in the system.
| Figure 5. Do Not Touch Socket Contacts |
Socket Preparation
| Figure 6. Opening the Socket Figure 7. Remove Protective Cover NOTE: Glove images are for illustrative purposes only. Please consult local safety guidelines for specific requirements |
5 Types Of Contact Damage to look for are:
(See table 2 for potential causes and solutions)
1. Contact is bent backwards upon itself | 2. Content is bent forward or downward | 3. Contact is bent sideways |
4. Content tip is bent up | 5. Content tip is missing |
Table 2: Bent Contact Causes and Corrective Actions
| Failure Type | Potential Causes | Possible Corrective Action |
| 1,5 |
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| 1,5 |
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| 2 |
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| 3 |
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| 4 |
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Boxed Processor Installation
As a supplement to the manual provided with the boxed processor, install the processor and fan heatsink in the following manner.
Processor Handling
| Do not touch processor contacts |
Processor Installation
| Figure 8. Protective Cover Removal Figure 9. Figure 10. Figure 11. Figure 12. |
Boxed Intel Fan Heatsink Handling
| Figure 13. |
Boxed Fan Heatsink Installation
NOTE: The thermal solution integration procedures should be performed with the motherboard in the Chassis to provide proper clearance under the motherboard for the fastener mechanisms.
| Figure 14. Image no longer availableFigure 15. Figure 16. Figure 17. Figure 18. Figure 19. |
Maintaining and Upgrading Systems Based on the Pentium 4 Processors in the 775-land Package
Boxed Processor Removal
Every time the heatsink is removed from the processor, it is critical that the thermal interface material be replaced, in order to ensure proper thermal transfer to the boxed processor fan heatsink. Note: Be sure to take the proper electrostatic discharge (ESD) precautions (ground straps, gloves, ESD mats, or other protective measures) to avoid damaging the processor and other electrical components in the system.
Caution: If you find that considerable force is required to remove the boxed processor assembly, consider wearing gloves to protect your hands and take care to keep your hands away from any metal edges on the chassis when removing components.
Thermal Interface Material Attached to the Heatsink
Intel does not recommend the removal of the thermal interface material located on the bottom of the boxed processor fan heatsink. Removal of this material may cause damage to the processor and will void the boxed processor warranty. If you must remove and re-use the fan heatsink, it will require replacement. Also, if the thermal interface material is at all damaged, you must also replace the fan heatsink. Contact Intel Customer Support to receive a replacement fan heatsink.
Follow these steps to remove the boxed processor fan heatsink from the system:
| Figure 20. Figure 21. |
Follow these steps to remove the boxed processor fan heatsink from the system:
| Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. |
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Software and Operating System Considerations
The Pentium 4 processor is a completely different micro-architecture from Intel's prior microprocessors that were based on the P6 micro-architecture. The Intel NetBurst micro-architecture supports the entire IA32 instruction set including Intel's MMX™ technology and the Streaming SIMD (Single Instruction Multiple Data) Extension. It also includes 144 more instructions called the Streaming SIMD Extensions 2 or SSE2. The SSE2 instructions compliment MMX technology and SSE instructions by supplying increased computation capability, support for larger data types (e.g. double-precision floating point numbers and 64-bit packed integer numbers), and several data handling and conversion instructions. In addition, the Intel NetBurst micro-architecture enhances the P6 micro-architecture's floating-point unit.
Processor manufactured on the 90nm and 65nm process technologies included Streaming SIMD Extensions 3. These thirteen additional instructions have been added to the existing 144 instructions, including SIMD double precision floating-point, SIMD 128-bit integer, and cache and memory management instructions.SSE3 enhances performance to accelerate the most demanding aspects of Internet computing, as well as video, speech, encryption, imaging, and non-threaded workstation applications.
The Pentium 4 processor supporting Hyper-Threading Technology makes a single physical processor appear as two logical processors; the physical execution resources are shared and the architecture state (which tracks the flow of a program or thread) is duplicated for the two logical processors. For additional information on integrating systems based on the Pentium 4 processor supporting Hyper-Threading Technology, refer to the Integration Overview for Systems Based on the Intel Pentium 4 Processor Supporting Hyper-Threading Technology.
Operating System Support
Nearly all modern operating systems designed for the Intel Architecture have support for the Pentium 4 processor, although some may require specific versions or processor support files. Microsoft* Windows* Vista* or Microsoft* Windows* XP supports the Pentium 4 processor. Additionaly, Linux* distributions based on the Linux* 2.4 core support the processor. Also, many other vendors have support for the Pentium 4 processor in their operating systems. System integrators should verify that the operating system they have selected supports the Pentium 4 processor.
Note: Windows* Vista*, Windows* XP or certain versions of Linux are required for Hyper-Threading Technology2 support for the Pentium 4 processor. For additional information on integrating systems based on the Pentium 4 processor supporting Hyper-Threading Technology, refer to the Integration Overview for Systems Based on the Intel Pentium 4 Processor Supporting Hyper-Threading Technology.
Software Optimization
With specific drivers that use the SSE3 instructions, graphics accelerators, audio hardware and software, and other system resources can experience substantial performance gain. Graphics card vendors typically highlight support changes with new driver releases. Download and install the latest drivers from the vendor's website. Also, verify that the driver version contains optimization for the Pentium 4 processor.
Many applications also use the SSE3 instructions to experience the breakthrough performance of the Pentium 4 processor. System integrators should contact software vendors to verify support and determine version information.
Hyper-Threading Technology increases processor utilization by executing more than one instruction thread at a time. This increased efficiency provides better responsiveness and immediate performance in multi-tasking environments and for multi-threaded applications. Download and install the latest drivers from the vendor's website. Also, verify that applications and driver versions contain optimizations for Hyper-Threading Technology for the Pentium 4 processor.
System performance is greatly affected by proper operating system and driver installation processes. For example, it is important to install the latest Intel® Chipset Software Installation Utility immediately after installing most Microsoft operating systems to ensure proper drivers for the chipset are installed prior to installation of other drivers. System integrators should confirm boxed Intel Pentium 4 processor-based systems are optimally configured and integrated.
Conclusion
Boxed Intel Pentium 4 processor-based systems require proper integration. System integrators that follow the guidelines in this document will experience higher customer satisfaction by providing higher quality systems.
2 Hyper-Threading Technology requires a computer system with an Intel® Pentium® 4 processor supporting HT Technology and a Hyper-Threading Technology enabled chipset, BIOS and operating system. Performance will vary depending on the specific hardware and software you use. That includes optimizations for this technology. See www.intel.com/products/ht/hyperthreading_more.htm for more information including details on which processors support HT Technology.
3 Power savings from Enhanced Intel SpeedStep® technology may vary depending on system usage and design.
4 Execute Disable Bit requires operating system support. See http://www.intel.com/business/bss/infrastructure/security/xdbit.htm for more information on how to implement this feature.
5 Intel® 64 requires a computer system with a processor, chipset, BIOS, OS, device drivers and applications enabled for Intel 64. Processor will not operate (including 32-bit operation) without an Intel 64-enabled BIOS. Performance will vary depending on your hardware and software configurations. Intel 64 enabled OS, BIOS, device drivers and applications may not be available. Check with your vendor for more information.