Copyright: Copyright © 1998 Intel Corporation, All rights res
Citation: Copyright © 1998 Intel Corporation, All rights reserved


Contents

Purpose of this Utility

How the Utility works

Information provided by the Utility

Special Sections:  Multiprocessor and Multilanguage support

Intended Use of CPUID Utility for Windows*


How the Utility works

The Intel CPUID Utility for Windows* searches your processor for a precise instruction string embedded in your processor.  This instruction string is present on processors that were introduced after the Intel486 processor.  It is also included in some versions of the Intel386 and the Intel486 processors. This instruction string is “read” by this utility and the output is translated by the utility into terms and information that can be understood.

Once you have downloaded the utility to your hard drive or to a floppy disk, you can execute the utility simply by clicking on the “.exe” file.  This will launch the utility and  detected information about your processor will be displayed in eight (8) distinct field boxes.

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Information provided by the Utility

The Intel CPUID Utility for Windows* provides the following field boxes to help identify your Intel microprocessor:

Genuine Intel

This field box will display “Genuine Intel” in the situation where the utility detects the “GenuineIntel” ASCII text string in the CPUID signature of the processor in your system.  This confirms that your system contains an Intel microprocessor. If the utility doesn’t detect this string of text, one of two messages will be displayed, depending upon the other information that is provided in the CPUID string.

Note #1: The Intel CPUID Utility for Windows is intended to identify only Genuine Intel microprocessors.

Note #2: For Intel 386DX™ and early versions of the Intel 486DX™ processor family, the CPUID instruction string on the processor did not carry manufacturer information. The list includes the following processors:

All Intel386™ processors

Some IntelDX2™ processors

Some Intel486™ DX processors

Some Intel486™ SX processors

Please follow instructions provided in Genuine Intel detail message

Processor Description

This field box provides the name of the microprocessor, or the “marketing name” for the  Genuine Intel processor contained in your system (e.g. an Intel Pentium® processor). Note that if the utility is unable to detect the “GenuineIntel” ASCII text string, it will not return any value in this field.  Please follow directions in the “details” message.

Type

This field box describes the type of the Genuine Intel processor contained in your system (e.g. upgrade such as an Intel Overdrive® processor). The processor type indicates whether the processor is a single processor, dual processor, or an Intel OverDrive® processor.

Family

This field box describes the family number of the Genuine Intel processor contained in your system (e.g. Family 5) at the time of this documentation includes the Pentium processor and the Pentium processor with MMX™ technology.  This information can be useful for an end user if validating information from the “Quick Reference Guide” that is available for the specific family of your processor.

Model

This field box describes the model number of the Genuine Intel processor contained in your system (e.g. Model 4).  Model number is used along with family to determine which specific processor in a family of processors that your computer contains.

Stepping

This field box describes the production stepping of the Genuine Intel processor contained in your system (e.g. Stepping 4).  Stepping is used to indicate that a “revision” has been made to the processor.  In most cases, a new processor is first shipped with an “A” stepping, though this isn’t always the case.  Then, as revisions and changes are made, they are incorporated into later steppings of the processor.  By using unique steppings, it facilitates change control and tracking, and also allows an end user to identify more specifically which version of the processor their system contains.

Detailed Information

This field box provides more detailed information for each field box.  To see detailed information, select the Details Button adjacent to each field box.

For more information about the Details Button, see below.

Cache Information

If your system contains a Pentium® Pro or Pentium® II processor, this field box displays information about the amount of Level 1 and Level 2 Cache present. The information is located directly under the “Detailed Information” box and is displayed after execution of the utility. If your system does not contain a Pentium® Pro or Pentium® II processor, this field box will not be displayed.

Details Button

After execution of The Intel CPUID Utility for Windows*, you may click on any of the details buttons adjacent to a field box to obtain more detailed information about your processor. When a details button is pressed, more information is displayed in the “Detailed Information” field box.

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Intended Use of CPUID Utility for Windows*

The CPUID Utility for Windows*  is a tool provided by Intel Corporation intended for end-users for identification of the Intel microprocessor within a computer system.

The CPUID Utility for Windows* is intended only to operate on computer systems containing an Intel microprocessor. If this utility is executed on a system that does not contain an Intel microprocessor, it may return inaccurate results, however, it will not harm the computer system.

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Purpose of this Utility

The Intel CPUID Utility for Windows* allows Windows 95 or Windows NT users to identify what type of Intel microprocessor they have contained in their system. It is not intended to identify microprocessors manufactured by companies other than Intel nor is it intended to detect the speed of your Intel microprocessor.

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Special Sections:  Multiprocessor and Multilanguage support

Multiprocessor Capability

The Intel CPUID Utility for Windows* is capable of reading the CPUID signature in multiprocessor (2 or more processor) systems running Microsoft Windows* NT.  If you have a multiprocessor system running Microsoft Windows* NT, the “Multiprocessor” label on the menu bar will highlight in black all processors which can be queried for the CPUID instruction sting.  To switch between processors, select “Multiprocessor” from the Menu Bar and select the processor you wish to query (e.g. select Processor #2 to run the utility on Processor #2).

Note: If you are running Windows* 95, you will only be able to query Processor #1 even if more are present, since Windows 95 is a operating system designed for single processor use.

If you have a uniprocessor (1 processor) system, the Intel CPUID Utility for Windows will automatically detect your single processor. All other processor numbers under the “Multiprocessor” label will be colored gray and will be inoperable.

Multilanguage Capability

The Intel CPUID Utility for Windows* supports the following languages: English, French, German, Italian, Portuguese, and Spanish. To switch to a different language, select the desired language from the main Menu Bar.

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