POWERLEAP PL-PROMMX

Pentium CPU Upgrade Kit

--for--

!"Intel Pentium (P54C) and Pentium w/MMX Technology (P55C)

!"AMD K6 and K6-2
!"Cyrix/IBM 6X86, 6X86L, 6X86MX, and MII
!"IDT C6

Version 6.xx
Copyright  1997-2000 PowerLeap Products, Inc.
All Rights Reserved.
v6.0, November 1999
v6.1, February 2000

This document contains proprietary information protected by copyright. All rights are reserved. No
part of this manual may be reproduced by any mechanical, electronic, or other means in any form
without prior written permission of the manufacturer. The information in this document is subject to
change without prior notice in order to improve reliability, design and function and does not represent
a commitment on the part of the manufacturer.

Trademarks

PowerLeap is a registered trademark of PowerLeap Products Inc. Renaissance/AT, PL-Pro/II,

PL-PII, PL-ProMMX, IPS, PL-54C/MMX, PL-C6/200, PL-OD54C, PL-386, and PL-586 are
trademarks of PowerLeap Products Inc. IBM, EGA, VGA, XT/AT, OS/2, and PS/2 are registered
trademarks of International Business Machines Corporation. Intel and Pentium are registered
trademarks of Intel Corporation. Microsoft, Windows, Windows NT, and MS-DOS are either
trademarks or registered trademarks of Microsoft Corporation. VIA is a registered trademark of VIA
Technologies, Inc. Other product names mentioned herein are used for identification purposes only
and may be trademarks and/or registered trademarks of their respective companies.

Limitation of Liability

While reasonable efforts have been made to ensure the accuracy of this manual, the manufacturer and
distributor assume no liability resulting from errors or omissions in this manual, or from the use of
the information contained herein. In no event will the manufacturer be liable for direct, indirect,
special, incidental, or consequential damages arising out of the use or inability to use the product or
documentation, even if advised of the possibility of such damages.

Visit our Web sites at:

http://www.powerleap.com

http://www.friendtech.com

The PowerLeap Web site (http://www.powerleap.com/download.htm) contains links to utility files

available for FTP download.
Table of Contents i

Table of Contents

Introduction 1
About the MMX Technology 1
About the 3DNow! Technology 1
Some Commonly Used Abbreviations 2
Special Features 2
What You Have 3

The PowerLeap™ PL-ProMMX 5

Quick Start: CPU Settings 5
SW1 Settings: Clock Multiplier and Voltage Settings 7

Installing the PL-ProMMX 9

Technical Reference 17
SW1: Core Voltage Settings 20

Windows 95 Updates for AMD CPUs 23

Windows 95B (OSR2) Patch for AMD CPUs 23
Windows 95A (OSR1) Patch for AMD CPUs 24

PowerLeap™ Installation Guide

 ii Table of Figures

Table of Figures
Figure 1. PL-ProMMX (SVRM)________________________________9
Figure 2. Sliding the CPU onto the CPU plate ____________________10
Figure 3. Tightening the hex nuts______________________________11
Figure 4. Inserting the CPU into the upgrade adapter ______________12
Figure 5. Raising the ZIF socket arm ___________________________13
Figure 6. Installing the CPU upgrade adapter into the ZIF socket _____14
Figure 7. Locking the CPU upgrade adapter into the ZIF socket ______15
Figure 8. Connecting the power cables _________________________16

PowerLeap™ Installation Guide

Introduction 1

Introduction
Your PowerLeap™ PL-ProMMX CPU upgrade adapter allows Pentium socket 5
and socket 7 systems to take advantage of the latest MMX CPU technology from
Intel, AMD, Cyrix, and IDT.
The CPU upgrade adapter employs patented technology to adapt socket 5 and
socket 7 systems to the voltage and pinout requirements of this new generation of
processors. It provides an upgrade solution that would otherwise require the
replacement of the motherboard.

About the MMX Technology

Intel’s MMX technology extends the performance of Pentium processors with 57
new instructions, a 32K L1 cache, four new 64-bit data types, and more. For
multimedia and communications applications, MMX can significantly enhance
audio/video playback and image processing. MMX technology is compatible with
a wide range of existing operating systems (including MS-DOS, Windows, OS/2,
and UNIX) and 16/32-bit applications.

About the 3DNow! Technology

AMD’s 3DNow! technology is an innovative group of 21 new instructions for the
x86 architecture that bring powerful performance enhancements for multimedia
and floating-point-intensive applications. With 3DNow! technology, applications
can achieve more detailed 3D imaging, faster frame rates for video playback, and
dramatic improvements in audio. 3DNow! technology appears in the AMD K6-2
processor and works with all existing operating systems and x86 applications.

PowerLeap™ Installation Guide

 2 Introduction

Some Commonly Used Abbreviations

This manual uses the following abbreviations and acronyms.
MMX: Multimedia Extension
P54C: Intel Pentium CPU
P55C: Intel Pentium with MMX CPU

Special Features
PowerLeap PL-ProMMX (switching) offers the following advanced features:
#" Supports both Socket 5 & Socket 7 Pentium systems’ MMX-Enabled CPU
upgrade
#" Employed the patented IPS (Independent Power Source) technology. Which
provides pure, sufficient & durable power to the V/Core of split-voltage type
CPUs
#" Switching VRM (Voltage Regulating Module) circuitry
#" Supports Intel Pentium, Pentium w/MMX, AMD K6, K6-2, Cyrix/IBM
6x86L, 6x86MX, MII, and IDT C6 CPUs
#" Large On-Chip 64KB L1 Cache (AMD K6, K6-2, Cyrix/IBM 6x86MX, MII,
and IDT-C6) or 32KB L1 Cache (Intel Pentium w/MMX) for High
performance implementation
#" Chip-for-Chip replacement, with no software drivers to install
#" The most cost effective MMX CPU upgrade solution

PowerLeap™ Installation Guide

Introduction 3

What You Have

Your PowerLeap™ PL-ProMMX CPU upgrade adapter includes the following
items:
#" The PowerLeap™ PL-ProMMX upgrade adapter
#" Power connector cord
#" PowerLeap™ Utility Diskette
#" CPU cooling fan & heatsink

PowerLeap™ Installation Guide

 4 Introduction

PowerLeap™ Installation Guide

The PowerLeap™ PL-ProMMX 5

The PowerLeap™ PL-ProMMX

This chapter describes setting the clock multiplier and voltages for your
PowerLeap PL-ProMMX CPU upgrade adapter.

Quick Start: CPU Settings

This section shows how to use the SW1 DIP switch to choose the correct clock
multiplier and voltages for your new Intel, AMD, or Cyrix/IBM processor.

Intel CPU SW1 Settings

O N

Pentium w/MMX-200 (66/3.0x)

1 2 3 4 5 6 7 8

O N

Pentium w/MMX-233 (66/3.5x)

1 2 3 4 5 6 7 8

AMD K6 CPU SW1 Settings

O N

K6-200 (66/3.0x)
1 2 3 4 5 6 7 8

O N

K6-233 (66/3.5x)
1 2 3 4 5 6 7 8

O N

K6-266 (66/4.0x)
1 2 3 4 5 6 7 8

O N

K6-300 (66/4.5x)
1 2 3 4 5 6 7 8

PowerLeap™ Installation Guide

 6 The PowerLeap™ PL-ProMMX

AMD K6-2 CPU SW1 Settings

O N

K6-2 /300 (66/4.5x)

1 2 3 4 5 6 7 8

O N

K6-2 /333 (66/5.0x)

1 2 3 4 5 6 7 8

O N

K6-2 /366 (66/5.5x)

1 2 3 4 5 6 7 8

O N

K6-2 /400 (66/6.0x)

1 2 3 4 5 6 7 8

O N

#K6-2 /450 (75/6.0x)

1 2 3 4 5 6 7 8

# For systems with an external clock speed faster than 66MHz.

IDT CPU SW1 Settings

O N

C6 MMX-200 (66/3.0x)
1 2 3 4 5 6 7 8

O N

C6 MMX-240 (60/4.0x)
1 2 3 4 5 6 7 8

O N

WinChip2-240 (60/4.0x)
1 2 3 4 5 6 7 8

O N

WinChip2-266 (66/4.0x)
1 2 3 4 5 6 7 8

O N

#WinChip2-300 (75/4.0x)
1 2 3 4 5 6 7 8

# For systems with an external clock speed faster than 66MHz.

PowerLeap™ Installation Guide

The PowerLeap™ PL-ProMMX 7

Cyrix/IBM 6x86MX CPU SW1 Settings

O N

6x86MX-PR233GP (66/3.0x)
1 2 3 4 5 6 7 8

O N

#6x86MX-PR233GP (75/2.5x)
1 2 3 4 5 6 7 8

O N

#6x86MX-PR266GP (83/2.5x)
1 2 3 4 5 6 7 8

# For systems with an external clock speed faster than 66MHz.

Cyrix/IBM MII CPU SW1 Settings

O N

MII-300GP (66/3.5x)
1 2 3 4 5 6 7 8

O N

#MII-333GP (75/3.5x)
1 2 3 4 5 6 7 8

# For systems with an external clock speed faster than 66MHz.

SW1 Settings: Clock Multiplier and Voltage

Settings
This section shows the SW1 clock multiplier and voltage settings for Intel, AMD,
Cyrix/IBM and IDT CPUs. To reduce power consumption, dual-voltage CPUs
use two separate supply voltages: an I/O interface voltage and a lower core voltage
for the processor.

PowerLeap™ Installation Guide

 8 The PowerLeap™ PL-ProMMX

SW1: Pins 1, 2, & 3

Pins 1, 2, & 3: Clock Multiplier
CLKMUL 6x 5.5x 5x 4.5x 4x 3.5x 3x 2.5x
SW1: Pin 1 ON OFF OFF ON ON OFF OFF ON
SW1: Pin 2 OFF OFF ON ON OFF OFF ON ON
SW1: Pin 3 OFF ON ON ON ON OFF OFF OFF

SW1: Pins 4, 5, 6, 7, & 8

Pins 4, 5, 6, 7, & 8: Core Voltage

Core Volt. 3.5V 3.2V 2.9V 2.8V 2.4V 2.2V
CPU TYPE C6 K6-233 K6-200 P55C K6-2/450 K6-266
WinChip2 6x86MX K6-300
MII K6-2
SW1: Pin 4 ON OFF ON OFF OFF OFF
SW1: Pin 5 ON OFF OFF OFF OFF ON
SW1: Pin 6 ON ON OFF OFF ON OFF
SW1: Pin 7 ON ON ON ON OFF OFF
SW1: Pin 8 OFF OFF OFF OFF OFF OFF

For systems with an external clock speed of less than 66MHz,

there may be a slight performance sacrifice for your new
CPU. For example, changing to a K6-2/400 from a
Pentium-75 will result in a system upgrade speed of 300MHz
(not 400MHz). In this case, you can get improved
performance by adjusting the external clock speed to
66MHz.

PowerLeap™ Installation Guide

Installing the PL-ProMMX 9

Installing the PL-ProMMX

This chapter describes installing your CPU upgrade adapter in your computer.

Figure 1. PL-ProMMX (SVRM)

To compare the performance increase provided by the PL-ProMMX CPU

upgrade adapter, we suggest running the PowerLeap CPU Control Panel®
software both before and after installation. If you are uncertain about the speed of
your existing CPU, you can determine the speed by running the PowerLeap CPU
Control Panel®.

The PowerLeap web site (http://www.powerleap.com)

contains links to files available for downloading, including
the PowerLeap CPU Control Panel® software.

PowerLeap™ Installation Guide

 10 Installing the PL-ProMMX

$" To install a CPU in the PL-ProMMX upgrade adapter:

1. Loosen the hex nuts at each corner of the provided CPU cooling fan/heatsink.
You should be able to freely move the heatsink up and down.
2. Turn your new CPU over (so that the pins are facing upward) and slide it under
the grooves at the sides of the CPU cooling fan/heatsink.

Power
Cable

Pin 1

Figure 2. Sliding the CPU onto the CPU plate

Pin 1 of the CPU must occupy the corner diagonally opposite

the fan’s power cable. If necessary, remove the CPU from the
CPU plate and insert it again, with pin 1 in the correct
position.

PowerLeap™ Installation Guide

Installing the PL-ProMMX 11

3. Tighten the hex nuts. The CPU should be firmly attached to the CPU plate.

Figure 3. Tightening the hex nuts

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 12 Installing the PL-ProMMX

4. Turn the assembled CPU cooling fan/heatsink and CPU over and insert the
CPU into the socket on the upgrade adapter, making sure that pin 1 of the
CPU corresponds to pin 1 of the socket. Be sure the CPU is firmly seated in
the socket.

Pin 1
Pin 1

Figure 4. Inserting the CPU into the upgrade adapter

$ To install the CPU upgrade adapter in your computer:

1. Place your computer where you will have plenty of space to work.
2. Turn the computer off and disconnect all power cords and cables from
the rear of the computer.
3. Remove the cover from the computer (as described in the computer
documentation).

PowerLeap™ Installation Guide

Installing the PL-ProMMX 13

4. Locate the CPU ZIF socket on the computer’s motherboard. The CPU itself
may be concealed under a CPU cooling fan and/or heatsink.
5. If your computer has a CPU cooling fan/heatsink, remove it.
6. Raise the ZIF socket arm and remove the CPU from the ZIF socket.

Figure 5. Raising the ZIF socket arm

PowerLeap™ Installation Guide

 14 Installing the PL-ProMMX

7. Install the CPU upgrade adapter into your computer’s ZIF socket, making
sure that pin 1 of the upgrade adapter is installed in pin 1 of the ZIF
socket.

Pin 1
Pin 1

Figure 6. Installing the CPU upgrade adapter into the ZIF socket

Pin 1 of the CPU upgrade adapter must match the pin 1 hole
of the ZIF socket. If the upgrade adapter is installed
incorrectly, the CPU may be damaged.

PowerLeap™ Installation Guide

Installing the PL-ProMMX 15

8. Lock the CPU upgrade adapter into the ZIF socket by pressing the socket arm
down.

Figure 7. Locking the CPU upgrade adapter into the ZIF socket

PowerLeap™ Installation Guide

 16 Installing the PL-ProMMX

9. Plug the PL-ProMMX’s power cable and the cooling fan’s power cable into the
power connector and fan connector, respectively, on the CPU upgrade adapter.

Fan
Cable Power
Cable

Fan Power
Connentor Connentor
Figure 8. Connecting the power cables

The CPU upgrade adapter must have an independent

(external) power supply in order to operate properly.

For maximum reliability, do not use the unused connector on

the power connector cord to supply power to a CD-ROM
drive or other device. In other words, use the power
connector cord to connect only the upgrade adapter to the
computer’s power supply.

PowerLeap™ Installation Guide

Technical Reference 17

Technical Reference
You can achieve the best CPU performance by adjusting the system board’s
external clock speed according to the tables below. Or use the formula below to
calculate the CPU upgrade adapter’s clock multiplier.

System Upgrade Speed = External Clock Speed x Upgrade

Adapter Clock Multiplier

Intel CPU External Clock Upgrade Adapter Internal Clock Speed

Speed Clock Multiplier
Pentium - 75 50 MHz 1.5x 75 MHz
Pentium - 90 60 MHz 1.5x 90 MHz
Pentium - 100 66 MHz 1.5x 100 MHz
Pentium - 120 60 MHz 2x 120 MHz
Pentium - 133 66 MHz 2x 133 MHz
Pentium - 150 60 MHz 2.5x 150 MHz
Pentium -166 66 MHz 2.5x 166 MHz
Pentium - 200 66 MHz 3x 200 MHz
P55C MMX - 166 66 MHz 2.5x 166 MHz
P55C MMX - 200 66 MHz 3x 200 MHz
P55C MMX - 233 66 MHz 3.5x 233 MHz

PowerLeap™ Installation Guide

 18 Technical Reference

AMD CPU External Clock Upgrade Adapter Internal Clock Speed

Speed Clock Multiplier
K6 - 166 66 MHz 2.5x 166 MHz
K6 - 200 66 MHz 3x 200 MHz
K6 - 233 66 MHz 3.5x 233 MHz
K6 - 266 66 MHz 4x 266 MHz
K6 - 300 66 MHz 4.5x 300 MHz
K6-2 /266 66 MHz 4x 266 MHz
K6-2 /300 66 MHz 4.5x 300 MHz
K6-2 /300 75 MHz 4x 300 MHz
K6-2 /333 66 MHz 5x 333 MHz
K6-2 /333 75 MHz 4.5x 337 MHz
K6-2 /366 66 MHz 5.5x 366 MHz
K6-2 /400 66 MHz 6.0x 400 MHz
K6-2 /450 75 MHz 6.0x 450 MHz

IDT CPU External Clock Upgrade Adapter Internal Clock Speed

Speed Clock Multiplier
C6 - 200 66 MHz 3x 200 MHz
C6 - 225 75 MHz 3.5x 225 MHz
C6 - 240 60 MHz 4x 240 MHz
WinChip-2 - 240 60 MHz 4x 240 MHz
WinChip-2 - 266 66 MHz 4x 266 MHz
WinChip-2 - 300 75 MHz 4x 300 MHz

PowerLeap™ Installation Guide

Technical Reference 19

Cyrix/IBM CPU External Clock Upgrade Adapter Internal Clock Speed

Speed Clock Multiplier
6x86 - P120+ 50 MHz 2x 100 MHz
6x86 - P133+ 55 MHz 2x 110 MHz
6x86 - P150+ 60 MHz 2x 120 MHz
6x86 - P166+ 66 MHz 2x 133 MHz
6x86 - P200+ 75 MHz 2x 150 MHz
6x86L - P120+ 50 MHz 2x 100 MHz
6x86L - P133+ 55 MHz 2x 110 MHz
6x86L - P150+ 60 MHz 2x 120 MHz
6x86L - P166+ 66 MHz 2x 133 MHz
6x86L - P200+ 75 MHz 2x 150 MHz
6x86MX - PR166 60 MHz 2.5x 150 MHz
6x86MX - PR200 66 MHz 2.5x 166 MHz
6x86MX - PR200 75 MHz 2x 150 MHz
6x86MX - PR233 75 MHz 2.5x 188 MHz
6x86MX - PR233 66 MHz 3x 200 MHz
6x86MX - PR266 83 MHz 2.5x 207 MHz
MII-300GP 66 MHz 3.5x 233 MHz
MII-333GP 75 MHz 3.5x 263 MHz

For systems with an external clock speed slower than 50MHz, there may be
a slight performance sacrifice for your new CPU. For
example, changing to a K6-166 from a Pentium-75 will result
in a system upgrade speed of 150MHz (not 166MHz).

PowerLeap™ Installation Guide

 20 Technical Reference

SW1: Core Voltage Settings

Core Voltage Pin 4 Pin 5 Pin 6 Pin 7 Pin 8

3.5V ON ON ON ON OFF
3.4V OFF ON ON ON OFF
3.3V ON OFF ON ON OFF
3.2V OFF OFF ON ON OFF
3.1V ON ON OFF ON OFF
3.0V OFF ON OFF ON OFF
2.9V ON OFF OFF ON OFF
2.8V OFF OFF OFF ON OFF
2.7V ON ON ON OFF OFF
2.6V OFF ON ON OFF OFF
2.5V ON OFF ON OFF OFF
2.4V OFF OFF ON OFF OFF
2.3V ON ON OFF OFF OFF
2.2V OFF ON OFF OFF OFF
2.1V ON OFF OFF OFF OFF
2.0V OFF OFF OFF OFF OFF
2.05V ON ON ON ON ON
2.00V OFF ON ON ON ON
1.95V ON OFF ON ON ON
1.90V OFF OFF ON ON ON
1.85V ON ON OFF ON ON
1.80V OFF ON OFF ON ON

PowerLeap™ Installation Guide

Technical Reference 21

Core Voltage Pin 4 Pin 5 Pin 6 Pin 7 Pin 8

1.75V ON OFF OFF ON ON
1.70V OFF OFF OFF ON ON
1.65V ON ON ON OFF ON
1.60V OFF ON ON OFF ON
1.55V ON OFF ON OFF ON
1.50V OFF OFF ON OFF ON
1.45V ON ON OFF OFF ON
1.40V OFF ON OFF OFF ON
1.35V ON OFF OFF OFF ON
1.30V OFF OFF OFF OFF ON

PowerLeap™ Installation Guide

 22 Technical Reference

PowerLeap™ Installation Guide

Windows 95 Updates for AMD CPUs 23

Windows 95 Updates for AMD CPUs

If you are running Windows 95 on a computer with an AMD K6-2, K6-III, or
K6-2+ processor running at speeds of 350MHz and above, you may receive one of
the following error messages:
• Windows Protection Error.
• Device IOS failed to initialize.
• You must reboot your computer.

These error messages are not an issue under Windows 98,

Windows NT, or Linux.

Depending on your version of Microsoft Windows 95, you can correct this
problem with a patch file.

Windows 95B (OSR2) Patch for AMD CPUs

Microsoft has released a patch for Windows 95 OSR2 (OSR2, OSR2.1, or
OSR2.5) to correct a timing problem with the AMD K6-2 at speeds of 350MHz
and higher. This file is available from the PowerLeap web site. For complete
information on this patch, please go to
http://www.microsoft.com/windows95/downloads/contents/wurecommended
/s_wuservicepacks/amdpatch/default.asp?site=95.
Please note that this patch will not resolve issues associated with any versions of
Windows 95 other than the OEM SR2 version.
If you are not sure which version of Windows 95 you have, you can find out by
checking your System Properties. An OEM SR2 system will show a version

PowerLeap™ Installation Guide

 24 Windows 95 Updates for AMD CPUs

designator such as "4.00.9500 B". The number may vary slightly, but the letter
designator will be a "B" for the OSR2 version. Version designators without a "B",
such as an "A" or nothing after the number, cannot use the patch.

Windows 95A (OSR1) Patch for AMD CPUs

A patch available on www.friendtech.com fixes the "Windows Protection Error"
problem that occurs when running AMD K6-2/K6-III CPUs at speeds of
350MHz (or higher) under Win95a (OSR1).
IMPORTANT: Use this patch for Windows 95a (OSR1) only. If you have
Windows 95b (OSR2), use the OSR2 patch provided by Microsoft. Windows 98
users are not affected by this problem. For more information on this issue, read
the PL-ProMMX Troubleshooting Guide.

PowerLeap™ Installation Guide