Intel Pentium OverDrive Processor with MMX... User manual

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Copyright © 1997 Intel Corporation. All rights reserved.
Intel Corporation
5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
Intel Corporation assumes no responsibility for errors or omissions in this
guide, nor does Intel make any commitment to update the information
herein.
*Other brands and names are the property of their respective owners.
Check your computer's owner's manual......................................... 4
Installation steps ............................................................................. 4
Troubleshooting ........................................................................... 14
Getting help .................................................................................. 21
Registration .................................................................................. 22
Three-year limited warranty......................................................... 23
First Edition January 1997
Second Edition March 1997
Third Edition August 1997
Part number: 669409-003
Contents
This symbol indicates a CAUTION or WARNING.
It identifies operations or situations that may be
harmful or dangerous to you or your equipment.
For your safety and to protect your equipment,
read and observe all cautions and warnings.
Explanation of symbols used in this guide:
This symbol indicates a NOTE. It identifies items
of special interest that pertain to the section or
procedure you are reading. Notes typically clarify
or expand the material in the text.

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Step 1—Check your computer's BIOS.
Caution: Failure to update an incompatible BIOS will
cause your computer to lock up after installation.
The system control program (BIOS) in some computers doesn't support the
higher speed of the Pentium OverDrive processor with MMX technology.
You must update an incompatible BIOS before installing the processor.
Failure to update your incompatible BIOS will cause your computer to lock
up after installation. This lock-up may occur every time you start your
computer or only after you install new hardware such as graphics or audio
cards.
Follow these steps to determine whether your computer's BIOS must be
updated.
1. Insert the OverDrive Processor Diagnostic diskette in drive A.
2. Choose File (for Windows* 3.1 or Windows NT*)
or Start (Windows 95 or Windows NT 4.0).
3. Choose Run.
4. Type a:\diag, click OK, then choose Run Diagnostics from the menu.
If your computer's BIOS is incompatible with the Pentium OverDrive
processor with MMX technology, you must update the BIOS before
installing the Pentium OverDrive processor with MMX technology (see
"BIOS update needed" on page 17).
A successful result indicates that the likelihood of encountering a
problem due to a BIOS incompatibility is low. Please continue the
installation with Step 2. This diagnostic is limited to certain BIOS
tests only; it does not test for other possible incompatibilities
between the Pentium OverDrive processor with MMX technology and a
particular PC hardware configuration.
If you experience problems after installing the Pentium OverDrive
processor with MMX technology, contact Intel customer support for more
information. (See "Getting Help" on page 21.)
First check your computer owner's manual to see if it has a section on
installing computer upgrade hardware such as the Pentium OverDrive
processor with MMX technology. If it does, follow the owner's manual
procedure. Otherwise, use this manual.
Check your computer's owner's manual

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Step3—Unplugcomputerandremovecover.
Step 2—Ground yourself.
To prevent damaging the Pentium OverDrive processor with MMX
technology and your computer with a static discharge, ground yourself by
touching the metal back or side panel of your computer’s system unit.
Warning: Danger to equipment! The Pentium
OverDrive processor with MMX technology can be
damaged by static discharge. Before handling the
Pentium OverDrive processor with MMX technology,
be sure to ground yourself by touching the metal on
your computer. Limiting your movements during
installation reduces static electricity.
Warning: Don't burn yourself! Many components can
become hot enough to cause mild skin burns. Wait at
least 15 minutes after turning off the power before
handling any parts.
Turn off the computer and any attached equipment (such as a monitor or
printer), unplug the power cord, and remove the cover.
OFF
ON
OFF

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Step 4—Find the computer's Pentium
processor.
Find the Pentium processor in the computer. The Pentium processor in
most computers looks like the following:
Some computers have a power cable attached to the Pentium processor's fan
or have a passive heat sink (which may be attached with a clip) on top of
the Pentium processor .
Pentium
processor
Your computer's owner's manual may show the location of the processor. If
you can't locate your computer's original processor, contact your dealer or
your computer manufacturer for assistance.
Some computers have an empty second socket next to
the processor. For more information on the installation
process for these computers, see page 15.
PC-3785
PC-3786
Clip Fan power
cable
OverDrive
processor
socket

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After locating the processor, examine the socket to determine the socket
type. Most Pentium processor-based computers use a socket with a handle
that locks and unlocks, called a zero insertion force (ZIF) socket.
If the socket in your computer doesn't have a handle,
Intel strongly recommends that you have a qualified
professional install the Pentium OverDrive processor
with MMX technology rather than installing it yourself.
TypicalLIFsocket
(nohandle)
Typical ZIF socket
(with handle)
Some computers use a socket without a handle, called a low insertion force
(LIF) socket.
• If your computer has either a power cable attached to the Pentium
processor's heat sink or a heat sink attached with a clip, go to step 5.
• If your computer doesn't have a power cable attached to the heat sink
and doesn't have a heat sink attached with a clip, skip step 5 and go to
step 6.
Handle

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The heat sink on your computer's original processor is either clipped to the
socket or fastened directly to the top of the processor. If the heat sink is
fastened directly to the processor without a clip and doesn't have a fan
cable, go to step 6 now.
You do not need the fan, fan cable, or clip to install the
Pentium OverDrive processor with MMX technology.
After removing these parts, store them with your
original processor.
Step5—Unplugthefanpowercableorunfasten
theheatsinkclip.
Unplugthefanpowercable
Some computers have a power cable attached to the fan. Carefully unplug
the fan power cable from the power source.
After unplugging the fan power cable, carefully fold the
power source cable out of the way so it doesn't touch
any computer components.
After unplugging
the fan power
cable from the
computer power
source, fold the
computer power
source cable out
of the way.
PC-3252
System power
source cable
Fan power cable

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PC-3312
Removingtheheatsinkclip
If the heat sink is clipped to the socket, remove the clip by pressing down
and unfastening it from the tab on the socket. Be sure to hold your hand
over the clip while unfastening it to prevent it from flying loose.
Heatsink
fins
Heatsinkclipsto
sockettab
Heatsink
fan
Socket
Typical fan heat sink clip
Heatsinkclip
surroundsfanand
hookstosocket
tabs.Removeheat
sinkfanandfinsas
onepiece.
PC-2822
Heatsinkclipsto
sockettab
Pressdownontabto
releaseheatsinkclip
Typical passive heat sink clip
Some heat sinks clamp tightly over the socket tab and require a tool such as
a screwdriver to loosen the clip enough to slide over the tab. Carefully
insert the tool between the heat sink and the socket, just above the socket
tab, and gently pry outward to allow the heat sink to slip over the tab. You
should then be able to completely release the heat sink from all the other
socket tabs.
Usescrewdrivertoloosenclipwhile
pressingdown
Fan
Processor
Socket

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Step6—Openthesockethandleandremovethe
existingprocessorfromthesocket.
Push the handle slightly sideways to slide it over the lever lock tab, then
move the handle to a 90-degree, upright position. Be sure the socket is
completely open. Don't use excessive force. Your computer’s motherboard
should not bend or flex while you are opening the socket. Once the socket
is open, remove the processor.
Be sure the socket is
completely open.
PC-2833
Some manufacturers use thermal grease to attach the
heat sink to the processor. Thermal grease is a
conductive material and can damage your computer if it
gets on socket pin holes, processor pins, or other
components. Avoid getting thermal grease residue on
your hands or the computer when you remove the heat
sink from the processor.
Save the original processor in case you need it later. Store it in a safe place,
such as in the box that the Pentium OverDrive processor with MMX
technology came in.

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Step 7—Insert the Pentium OverDrive
processor with MMX technology into the
socket.
Correctly orienting your Pentium OverDrive processor with MMX
technology in the socket is crucial to the success of your installation. The
Pentium OverDrive processor with MMX technology fits in the socket only
one way.
Incorrectly aligning your Pentium OverDrive processor
with MMX technology can damage the processor and
your computer.
Orient the notch on one corner of the OverDrive processor with MMX
technology to the notch on one corner of the socket. Place the Pentium
OverDrive processor with MMX technology on the socket and align the
pins with the pin holes.
Notch
Notch
Once the pins and pin holes are properly aligned, gently insert the processor
into the socket. Don't use force to insert the processor in the socket.
Don'tapplypressuretothe
center of the fan.
PODP5V
109X4405H6J05
DC 5V 0.14A
SANYO DENKI

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Step8—Closethesockethandle.
Close the socket handle to lock the OverDrive processor with MMX
technology in place.
Once it is locked in place, the OverDrive processor with MMX technology
should fit snugly in the socket.
Step9—Replacethecover,pluginthecomputer,
andturn iton.
Put the cover back on the computer. Reconnect all the cables and cords, and
plug the power cord into the wall outlet.
Turn on your computer. If your computer requires it, run the computer’s
setup or configuration program. Refer to your computer's owner’s manual.
If you have problems with your computer after installing the Pentium
OverDrive processor with MMX technology, turn to the "Troubleshooting"
section.
If your computer requires setting jumpers or switches,
refer to your computer's owner's manual or the
"Troubleshooting" section.

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Installation of your Intel Pentium OverDrive processor with
MMX technology is complete.
When you ran the diagnostics in step 1, the program stored information
about your old processor. Run the diagnostics again to see how much faster
your computer performs with your new Pentium OverDrive processor with
MMX technology. The disk also contains the following diagnostics to test
your installation:
Processor Instruction Test Tests various processor functions to see
whether they are working properly.
Floating Point Tests the processor's floating-point unit by
Conformance Test comparing the value the floating-point unit
calculates to the value established by the
IEEE standard.
MMX Instruction Test Tests the various MMX technology
instructions to see whether they are working
properly.
MMX Technology Checks whether your computer is
Video Test compatible with the MMX technology
instructions.
In addition, you can test your installation by running software programs
you use frequently and experiencing the increased performance.
If you don't see increased performance, or if you have difficulty getting the
computer to run successfully, see the "Troubleshooting" section to
determine possible problems. If you still need help, contact your dealer.
Step 10—Test the installation of the Pentium
OverDrive Processor with MMX Technology.

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Troubleshooting
Read through the symptoms below. If you find one that resembles the
problem you’re having, try the corresponding possible solutions.
The computer doesn’t power on when you turn on the switch, or the
operating system prompt doesn’t appear on the screen.
• Be sure:
• The power cord is plugged into the wall outlet.
• Thecablesandcordsareattachedcorrectly.
• Anycardsyouremovedarereinstalledproperly.
• ThePentiumOverDriveprocessorwithMMXtechnology
andthesocketarecorrectlyaligned.
• Didyousetthejumpersorsystemswitchescorrectly,asdescribedinyour
computerowner'smanual?Forfurtherinformationonjumpersandswitches,
see page 20.
• Your computer may need an updated control program (BIOS). Contact
the technical support department at your computer vendor or dealer for
BIOS information.
• If you have access to another Pentium processor-based computer,
remove your Pentium OverDrive processor and install it in the second
computer.
Your application programs don’t run any faster with the Pentium
OverDrive processor with MMX technology installed.
• Did you set the jumpers or system switches correctly, as described in
your computer's owner’s manual? For further information on jumpers
and switches, see page 20.
• Does your computer require you to run its setup program? Check your
computer'sowner'smanualorcontactyourdealertoverify.
• Ifyourcomputerappearstobefunctioningnormallyandyouhaveeliminated
jumpersettingsandsetuprequirementsastheproblem,butyoustilldon'tsee
a speed improvement, see the "Getting Help" section on page 21.
Some of the pins on the Pentium OverDrive processor with MMX
technology are bent.
• Carefully straighten any bent pins with needlenose pliers or tweezers
before inserting the Pentium OverDrive processor with MMX technol-
ogy in the socket.

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Your computer has an extra processor socket.
• Some computers have two processor sockets that can be used for dual
processing as well as for single processing. The Pentium OverDrive
processor with MMX technology does not support dual processing.
However, if you use your two-socket computer in single-processing
mode, you can upgrade your computer with the Pentium OverDrive
processor with MMX technology.
To install:
1. Remove the original processor from the socket. Refer to instal-
lation steps 4 through 6 for more information on removing the
original processor.
2. Align and seat the Pentium OverDrive processor with MMX
technologyinanupgradesocket.(Usuallythisisthe samesocket
that contained the original processor. Refer to your computer's
owner's manual for information on locating the upgrade socket.)
Refer to installation step 7 for more information on aligning and
seating the OverDrive processor with MMX technology.
3. Continue with installation step 8.
Motherboardwithtwoprocessorsockets
Caution: After operating for several hours, many chips
in your computer, including the Pentium OverDrive
processor with MMX technology, can become hot
enough to cause mild skin burns if handled. Let the
computer cool off before handling the Pentium
OverDrive processor with MMX technology.
ThePentiumOverDriveprocessorwithMMXtechnologyfeelshot.
• ItisnormalforthePentiumOverDriveprocessorwithMMXtechnologyto
generateheatwhileoperating.
PC-3787

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Your computer powers on and runs normally for a few minutes then
hangs up or shuts down.
• Is the Pentium OverDrive processor with MMX technology socket
handle fully locked?
• Is the Pentium OverDrive processor with MMX technology fully
inserted?
• Didyousetthejumpersorsystemswitchescorrectly,asdescribedinyour
computer'sowner'smanual?
• Check to see if your fan is functioning properly.
Warning: When your computer is plugged in, the power
is on, and the cover is off, don't touch your computer or
the fan. Exercise extreme care, as injury may occur
from moving parts or death may occur from
electrocution. If uncertain, seek expert technical
assistance.
1. Remove the computer cover.
2. Checkthatnothingisblockingtheairflowfromthefan.Arethere
cables, cards, or other components that prevent good airflow to
the vents in the chassis?
3. Observethe fanonthePentiumOverDriveprocessorwith MMX
technology. The fan blades should be turning. If the fan works,
turn off and unplug your computer, then replace the cover.
Note: There must be adequate clearance between the
top of the fan and the nearest object to ensure proper
airflow. After unplugging your computer, you can
measure the space above the fan. It should be at least
0.4 inch, or about the thickness of your finger.
• Yourcomputermay not beprovidingenoughairflow to adequatelycool
the Pentium OverDrive processor with MMX technology. Call your
computer manufacturer for information about evaluating a possible
thermal condition in your computer.

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BIOS update needed
Here's what to do when the Intel diagnostic tells you to update your
computer's BIOS before installing the OverDrive processor with MMX
technology.
1. Collect this information:
BIOS serial number. The BIOS serial number is usually displayed on
the initial power-on screen. Most computers can be halted at this screen
by pressing the Pause key. Press the Enter key to continue.
Motherboard model number. Check your computer's owner's manual.
Computer name, model, and serial number. Check your computer's
owner's manual and the back of the computer.
2. Determine the proper BIOS update for your computer. With the
information you collected in the previous step, the motherboard's or
computer manufacturer's customer support can help determine the BIOS
update you need. Intel supplies information on contacting many
manufacturers of motherboards and computers: on the World Wide Web,
www.intel.com/overdrive/bios; on the Intel Bulletin Board Service (BBS),
[phone] (ask for the BIOS update document on the OverDrive area
of the BBS); and by FaxBack, [phone] (ask for FaxBack document
1522).
3. Obtain the proper BIOS update file for your computer. Either
download a file containing the new BIOS from the motherboard or
computer manufacturer's web site or BBS (see the Intel web site at
www.intel.com/overdrive/bios for links to many manufacturers) or get a
disk directly from the manufacturer.
The BIOS file or disk typically contains two parts: a flash update utility
program and a BIOS data file. Most Pentium processor-based
motherboards store the system BIOS in a flash memory component, which
lets the BIOS be easily updated through a flash update utility program.
This program is provided by most manufacturers and provides the
capability to save, verify, and update the system BIOS. The BIOS file(s) is
specific to your computer. Some manufacturers distribute the utility
program and the data file in a single compressed file (such as
NEW_BIOS.ZIP) that you must uncompress.

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4. Install the new BIOS on your computer. The procedure for updating
the BIOS is different for every model of computer. Read and follow your
motherboard's or computer manufacturer's instructions exactly. The
following is just an outline of the BIOS update procedure. Use your
motherboard or computer manufacturer's instructions.
a) Record the current BIOS settings. Most computers prompt you
during power-up to press a specific key (such as F1) to view the setup
screens.
b) Create a DOS-bootable diskette. Most BIOS update utilities require
that they be run from a disk from which the computer is started. This
requires the computer to run in a basic mode without memory
managers or drivers in memory. Refer to your operating system's
manual for instructions on creating a DOS-bootable disk.
c) Update the BIOS. Before starting the update, be sure you read and
understand the manufacturer's instructions. Often the instructions are
in a README file on the disk.
In general, you'll copy the BIOS utility and data files to the bootable
disk you created earlier and restart your computer from the disk.
Then run the BIOS update utility, following the manufacturer's
instructions. If the utility allows it, save your old BIOS. Do not turn
off the computer while the BIOS update utility is running. An
interruption in power can corrupt the BIOS code, making your
computer non-functional.
d) After the update, verify the BIOS settings against the settings you
recorded in step a.
If updating the BIOS sounds risky, have a qualified technician update the
BIOS for you. If you update the BIOS yourself, follow the manufacturer's
instructions exactly.
Your computer's BIOS or CMOS setup program doesn't identify the new
Pentium OverDrive processor with MMX technology, but the Intel
diagnostic program indicates that it is working correctly.
The BIOS in many older computers cannot identify the Pentium OverDrive
processor with MMX technology; however, those systems might still
operate correctly with the new processor. If the processor passes the Intel
diagnostic program and the system seems to be operating correctly with
satisfactory performance, then the fact that the BIOS does not correctly
display the name of the Pentium OverDrive processor with MMX
technology probably will not affect the system's or the processor's
operation, and it probably is not worth the effort to update the BIOS.

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YourPentiumOverDriveprocessorwithMMXtechnologyfanisnotworking.
• Is the fan fully seated? The Pentium OverDrive processor with MMX
technologyfanispoweredfromthreepowerconnectionsontheprocessortop.
Toensureyourfanisfullyseated:
1. Ground yourself by touching the metal on your computer, then
unplug your computer. Limiting your movements during instal-
lation reduces static electricity, which can damage the part and
your computer.
2. Release the corner of the fan assembly by gently squeezing
together the two retaining clips.
3. While keeping the clips squeezed together, slowly lift up the
corner, pivoting it against the opposite corner.
4. When the fan assembly is at an approximately 45-degree angle,
gently lift straight up from the processor.
5. Hold the fan at an approximately 45-degree angle, and align the
fanassemblyover the baseunit,startingwith the corneropposite
the retaining clip.
Take special care to align the contact pins on the fan assembly
to the three pads on the base unit.
6. Carefully lower the fan onto the base.
7. Secure the fan assembly to the base unit by ensuring that the
retaining clips have snapped into place.
If the fan still does not work properly after reseating, see the "Getting Help"
section.
RetainingClips
Baseunitcontactpads
Lift 45o
Contactpins

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You need to set jumpers or switches to configure your computer for the
PentiumOverDriveprocessorwithMMXtechnology.
• Inmostcomputers,thejumperandswitchsettingsfortheoriginalPentium
processorandthePentiumOverDriveprocessorwithMMXtechnologyare
thesame.Insomecases,however,youmayneedtospecificallyconfigure
yoursystemforaPentiumOverDriveprocessorwithMMXtechnology. Your
computer'sowner'smanualoryourcomputermanufacturershouldhavethe
correctsettingsforyourcomputer.Intelalsohasinformationaboutsome
computers. Seethe"GettingHelp"sectionforhowtogetthisinformation.
Jumpersareverysmallpinsfastenedtothemotherboard. Ifyoulookclosely,
youcanseethateachjumperislabelledwithanumberorletterthattypically
isprintedonthemotherboard,asshownbelow.
Thepinsareconnected(ON)whenatinyplasticconnectorcoverstwopins.
Theconnectorhasametalpieceembeddedintheplasticthatallowscurrent
topassbetweenthepins.
ToturntheconnectionOFF,removethejumperconnectorfromthepins. You
canalsoplacetheconnector over only one ofthepinsforsafekeepingas
shown. ToturntheconnectionON,placetheconnectoroverthetwoindicated
pins. Notethatwhilesomejumpersappearinpairs,othersmayappearinsets
offourormore,asshown.
PC-2913
J1 JP1
1 2 3 4 5
J1 JP1

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Getting Help
Intel Customer Support on the World Wide Web
Support information for Intel Brand products is available on the Internet for
downloading by anonymous FTP and for viewing or downloading on the
World Wide Web. Try Intels newsgroup forum for answers to common
questions or post your question to be answered.
Intel web site http://www.intel.com
Customer support web site http://support.intel.com
Intel FTP hostname ftp.intel.com
Customer support files ftp.intel.com/pub/support
Intel Internet newsgroup news://cs.intel.comor http://cs.intel.com
Intel Customer Support FaxBack* Service
Have documents sent to your fax machine or fax/modem. For information
about Intel support services options, order FaxBack document #8549. For
information about support for discontinued Intel products, order FaxBack
document #8715.
In North America (Oregon, USA) 800-525-3019
In Europe (Swindon, UK) [phone]
Intel Customer Support Technicians
If you are unable to find the information you need on one of our electronic
services, you may need to call a customer support technician.
Country Customer Support Hours (Local Time)
Telephone Number Monday through Friday
U.S. and Canada 1-800-321-4044 07:00-17:00
Swindon, UK
English [phone]:00-24:00
French [phone]:00-17:00
German [phone]:00-17:00 (Tuesday 08:00-16:00)
Italian [phone]:00-17:00 (Tuesday 08:00-16:00)
Japan 03-5350-0860 09:00-17:00
Asia-Pacific
Australia (Sydney) [phone]:00-15:00
Hong Kong [phone]:00-15:00
Korea [phone]:00-15:00
Singapore [phone]:00-15:00
Taiwan [phone]:00-15:00
From anywhere in the world, contact your local dealer or distributor, or call the
North American Service Center at [phone] (hours are 07:00-15:00, Pacific
Time).