Intel Pentium II OverDrive User manual

  II

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Copyright © 1998 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.
First Edition May 1998
Part number: 696766-001
Information in this document is provided in connection with Intel
products. No license, express or implied, by estoppel or otherwise,
to any intellectual property rights is granted by this document.
Except as provided in Intel’s Three Year Limited Product Warranty
for this product, Intel assumes no liability whatsoever, and Intel
disclaims any express or implied warranty, relating to sale and/or
use of Intel products including liability or warranties relating to
fitness for a particular purpose, merchantability, or infringement of
any patent, copyright or other intellectual property right. Intel
products are not intended for use in medical, life saving, or life
sustaining applications. Intel may make changes to specifications
and product descriptions at any time, without notice.
The Pentium®II OverDrive®processor may contain design defects
or errors known as errata which may cause the product to deviate
from published specifications. Current characterized errata are
available on request.

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English
Contents
Check your Computer's Owner's Manual .....................................3
Single Processor Installation Instructions ....................................4
Dual Processor Installation Instructions.....................................19
Troubleshooting and Additional Information.............................23
Getting Help ...............................................................................28
Three Year Limited Warranty .....................................................30
First check your computer's owner's manual to see if it has a section
on installing computer upgrade hardware such as the Pentium® II
OverDrive®processor. If it does, follow the owner's manual
procedure, using this manual for addtional information.
Check your computer's owner's manual
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.
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.
Explanation of symbols used in this guide:

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Warning: Danger to equipment! The Pentium II
OverDrive processor can be damaged by static
discharge. Before handling the Pentium II OverDrive
processor, be sure to ground yourself by touching the
metal on your computer. Limiting your movements
during installation reduces static electricity.
Step 2 — Ground yourself
Step 3—U
Step 1—Run Diagnostics Program
Prior to installing the Pentium® II OverDrive® processor, run the
diagnostic program on the included diskette to verify proper
operation of your PC. The diagnostic program will also update
Windows* 95 to improve multimedia performance when running
software written for Intel’s MMX™ technology.
To run the diagnostic program (requires Windows 95 or Windows
NT* 3.51 or greater):
1. Insert the Pentium II OverDrive processor Diagnostic
diskette into drive A.
2. Choose File (for Windows NT 3.51) or Start (for
Windows 95 or Windows NT 4.0 or greater).
3. Choose Run.
4. Type a:\diag and click OK,wait for the menu to
appear on screen, then choose Run Diagnostics from
the menu.
Once the diagnostics are completed, continue the installation
process with Step 2. Be sure to run the diagnostics program again
after installing the Pentium II OverDrive processor to verify proper
operation of the new processor.
If you experience problems after installing the Pentium II
OverDrive processor, contact Intel customer support for more
information. (See "Getting Help" on page 28.)
Step 1 — Run Diagnostics Program

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To prevent damaging the Pentium II OverDrive processor and your
computer from a static discharge, ground yourself by touching the
metal back or side panel of your computer’s system unit.
Step 3 — Unplug computer and remove cover
Turn off the computer and any attached equipment (such as a
monitor or printer), unplug the power cord, and remove the cover.
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.
OFF
ON
OFF

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Step 4 — Find the computer's Pentium®Pro
processor
Back of
System
ATX Motherboard
Pentium Pro
processor
In some systems, the Pentium Pro processor may be partially
obscured from sight by the system power supply, add-in cards, or
floppy/hard drive mounting brackets. It may be necessary to
remove add-in cards or drives to gain access to the processor socket.
Refer to your system documentation for information on removing
those items.
Find the Pentium Pro processor in your computer. The Pentium Pro
processor in most computers looks like one of the following:
PC-3846

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PC-3786
Clip
Fan power cable
Pentium Pro
processorBack of
system
Baby AT Motherboard
On top of your Pentium Pro processor there should be a passive
heatsink (which may be attached with a clip) or a fan heat sink with
an attached power cable.
Processor
socket
PC-3844

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Step 4—Find the computer's
Pentium processor.
Typical ZIF socket
(with handle)
Socket
Handle
After locating the processor, examine the socket to determine the
socket type. There are two socket types:
Some computers have an empty second socket next to the
processor. For more information on the installation
process for these computers, see the dual processor
section on page 19.
The Owner's Manual for your computer 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.
Do not raise
socket handle
unless fan
heat sink
clip has been
undone first!
Step 5 — Determine the socket type
1) A socket with a handle that locks or unlocks called a zero
insertion force (ZIF) socket.

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• If your computer has a power cable attached to the Pentium
Proprocessor'sfanheatsinkproceedwithStep6. Ifthefanheat
sink is attached with a clip go to Step 7. Otherwise, go directly
to Step 8.
Step 6 — Unplug the fan power cable
The fan power cable may be attached to your computer's power
supply or to a connector on the motherboard. If other cables are
in the way, carefully fold them out of the way so they don't touch
computer components. Then carefully unplug the heatsink's
power cable from the computer's power supply or slide the
power cable off the motherboard connector.
Your new OverDrive processor does not need the older
processor's fan, cable, or clip; after removing these
parts, store them with your Pentium Pro processor.
Typical LIF
socket
(no handle)
Warning: Damage to equipment! The Pentium II
OverDrive processor is incompatible with a LIF socket.
Attempting to install the Pentium II OverDrive processor
into a LIF socket will result in processor damage!
2) A socket without a handle is called a low insertion force
(LIF) socket.

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If your system uses a software program, such as Intel’s LANDesk®
Client Manager, to monitor the processor fan operation, the
Pentium II OverDrive processor may be compatible with that
feature. Refer to the Getting Help section on page 28 for more
information.
PC-3843N
System power
supply cable
Fan power cable
System Power Supply

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Fan
PC-2822
Heat sink clips
to socket tab
Press down on
tab to release
heat sink clip
Typical passive heat sink clip
Socket
If there is no clip on your processor, go to step 8. If the heat sink is
clipped to the socket, remove the clip by pressing down and
unfastening it from the tab on the socket, as shown in the following
illustrations. Be sure to hold your hand over the clip while
unfastening it to prevent it from flying loose.
Warning!: You must be very careful on removing the clip
from the processor. It may be under considerable tension
and may cause injury or system damage if not removed
carefully.
Heat sink
fins
Typical fan heat sink clip
Heat sink clip surrounds fan and hooks to socket tabs.
Remove heat sink fan and fins as one piece. Be careful
not to break the socket tabs.
Heat sink clips
to socket tab
Push
down
and
unclip
Step 7 — Remove fan heat sink clip assembly
Heat sink clip

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PC-3312
Carefully use screwdriver to loosen
clip while pressing down
Fan
Processor
Socket
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. See the illustration on the next page.
Step 8 — Open the socket handle and remove the
existing processor from the socket
Carefully insert the tool between the heat sink and the socket, just
above the socket tab. 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.
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.
See the illustration below.
Warning!: Damage to equipment! 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.

English
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PC-3885
Step 9 — Insert the Pentium II OverDrive
processor into the socket
Correctly orienting your Pentium II OverDrive processor in the
socket is crucial to the success of your installation. The Pentium II
OverDrive processor fits in the socket only one way.
Be sure the
socket is
completely
open.
Save the original processor in case you need it later. Store it in a
safe place, such as the box in which the Pentium II OverDrive
processor shipped.
90 deg.
Caution: The fan heat sink and processor may come out
as two separate pieces.
Before opening the ZIF socket lever, make sure to first
remove the fan heat sink clip assembly from the
processor.
Note: If your system’s processor socket is not easily
accessible, you may want to skip ahead to Step 13 and
connect the Pentium II OverDrive processor’s fan cable
before inserting the processor in the socket. After the fan
cable is connected, return to this step to complete
installation of the processor.
Fan Heat Sink
Pentium Pro
Processor

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PC-3848
PODP5V
109X4405H6J05
DC 5V 0.14A
SANYO DENKI
Don't apply pressure
to the center of the fan.
Warning!: Damage to equipment: Never attempt to
remove the fan from the Pentium II OverDrive processor.
Serious damage to the processor could result and this
action will void the processor warranty.
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.
Align the overhang area of the processor with the side of
the socket where the cam lever attaches.
Place the Pentium II OverDrive processor over the socket and align
the pins with the pin holes. Notice that the pin arrangement of the
socket matches the pin arrangement of the processor.
Step 10 — Insert the Pentium II OverDrive
processor into the socket (continued)
90 deg.
Processor
Ledge
Socket
Socket Handle

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Step 11—Dual Processor installation instructions.
PC-3849
Close the socket handle to lock the Pentium II OverDrive processor
in place.
Once it is locked in place, the Pentium II OverDrive processor
should fit snugly in the socket.
Step 11 — Close the socket handle
Step 12 — Connect the fan power cable
This is essentially the reverse of step 6. You should use the fan
power cable provided with the Pentium II OverDrive processor.
Carefully attach the small connector on the fan cable to the small
connector on the top of the Pentium II OverDrive processor fan.
The connector should snap into place. The cable’s small connector
is notched so it will only connect one way.
Then connect the large fan cable connector into one of the available
connectors from the system’s power supply. See the illustration on
the following page for details.
Note: If your system uses a software program, such as
Intel’s "LANDesk Client Manager", to monitor the
processor operation, refer to the "Troubleshooting" section
on page 23 for information on configuring the Pentium II
OverDrive processor to support the fan monitoring feature.
This feature can only be supported if fan power is supplied
by the motherboard.

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Step 10—Connect the fan power cable.
Step 13 — Connect the fan power cable
(continued)
PC-3843N
System power
supply cable
Fan power cable
provided with the
OverDrive processor
System Power Supply

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Re-install any add-in cards or any internal cables that you may
have removed in Step 4. Put the cover back on the computer.
Reconnect all the cables and cords, and plug the power cord
into the wall outlet.
Step 14 — Replace the cover, plug in the
computer, and turn it on
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 II OverDrive processor or don't see improved performance,
turn to the "Troubleshooting" section on page 23.
If your computer requires setting jumpers or switches,
refer to your computer's owner's manual or the
"Troubleshooting" section.
Step 15 — Test the installation of the Pentium II
OverDrive processor
Run the diagnostics again to see how much faster your computer
performs with your new Pentium II OverDrive processor. When
you ran the diagnostics in step 1, the program stored information
about your old processor. The disk also contains the diagnostics to
test your installation.

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Step 10—Replace the cover, plug in the
computer, and turn it onStep 10—Replace the
cover, plug in the computer, and turn it on.
.Step 11—Test the installation of the Pentium
II OverDrive
Processor Instruction Test Tests various processor functions
to see whether they are working
properly.
Floating Point Tests the processor's floating-
Conformance Test point unit by comparing the value
the floating-point unit calculates
to the value established by the
IEEE standard.
MMX ™ Technology Tests the various MMX™
Instruction Test technology instructions to see
whether they are working
properly.
MMX Technology Video Test Demonstrates the MMX™
technology features of your
Pentium II OverDrive processor.
In addition, you can test your installation by running software
programs you use frequently to experience 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.
Installation of your Intel Pentium II OverDrive processor
is complete.

English
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Some computers have two processor sockets that can be used for
dual processing as well as for single processing. The Pentium II
OverDrive supports dual processing. You must have two Pentium II
OverDrive processors to configure a system for dual processing.
The Pentium II OverDrive processor is not designed to
support more than two processors in a system.
Dual Processor installation overview of the
Pentium II OverDrive processor
Motherboard with two processor sockets
Back of
System
PC-3845

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Upgrading a single Pentium Pro processor-
based system with two Pentium II OverDrive
processors
If you are installing two Pentium II OverDrive processors into a
dual processor-capable system equipped with only one Pentium Pro
processor, please consult your system manual and/or manufacturer
for information on configuring the motherboard to support dual
processors. Some motherboards may require jumper changes to
recognize the second processor.
Note: Mixing of processor types is not supported. You
cannot use the Pentium II OverDrive processor with the
Pentium Pro processor.
Note: Some dual processor motherboards may require a
Voltage Regulator Module (VRM) for the second
processor. Contact your system manufacturer for
information on obtaining a second VRM if one was not
included with your system/motherboard.
Note: Some operating systems may need to be
reconfigured or re-installed to recognize the second
processor. Some operating systems, such as Windows* 95
and Windows 98, do not support dual processors.
Follow Steps 1 through 13 on pages 4 to 17 to remove the
Pentium Pro processor and install the Pentium II OverDrive
processors. Install the second Pentium II OverDrive processor
the same way as the first. Install a second VRM and change
motherboard jumpers if necessary.
Note: Each Pentium II OverDrive processor will require
a fan power cable, included with each processor.