PowerLeap Neo S370 Installation Guide

PowerLeap Neo S370 Installation Guide
An FC-PGA to PPGA Converter
--for use with-!"Intel
Pentium III “Coppermine” CPUs
Installation Guide
Copyright  2000 PowerLeap Products, Inc.
All Rights Reserved.
Manual edition 1.1, April 2000
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
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The PowerLeap Web site (www.powerleap.com/download.htm) contains links to utility files
available for FTP download.
Warning: Read Me First!
Special Features ________________________________________1
What You Have ________________________________________2
Inserting an FC-PGA CPU into the Neo S370
About the FC-PGA Form Factor___________________________3
Before Insertion ________________________________________4
Specifying the CPU Bus Settings ___________________________5
Inserting an FC-PGA CPU into the Neo S370 _________________5
Installing the Neo S370 in a ZIF Socket
Installing the CPU Heatsink/Fan
Frequently Asked Questions
Warning: Read Me First!
Warning: Read Me First!
There are many issues you need to be aware of before and during installation of
your FC-PGA (“Flip Chip” Pin Grid Array) CPU and Neo S370. We strongly
recommend you completely read this section before proceeding with your
CPU upgrade.
#" Take extreme care when inserting the FC-PGA CPU into the Neo S370.
The FC-PGA CPU (Intel Pentium III “Coppermine”) is a LOT more fragile
than PPGA CPUs (Celeron).
#" Avoid touching the FC-PGA silicon die. Always handle the FC-PGA CPU
by the edges.
#" BEFORE inserting the FC-PGA CPU into the Neo S370 converter, set
the correct S1 DIP switch settings. Refer to the section, “Specifying the
CPU Bus Settings”.
#" DO NOT try to remove your FC-PGA CPU from your Neo S370. If you
have wrongly inserted your FC-PGA CPU in the Neo S370 seek the help of
an experienced technician to help you remove it. Trying to remove it
yourself is very risky and an easy way to damage your new and expensive
#" DO NOT remove the Neo S370 if the power is still on. The Neo S370
LED emits a light if system power is still running through the
#" DO NOT use the fan that came included with your FC-PGA CPU.
Instead, use the custom PowerLeap Neo S370 CPU heatsink/fan. The
added height of the Neo S370 could cause problems if you try to use a
different CPU heatsink/fan. In addition, the thermal pad protects the
silicon die and increases thermal dissipation rate.
The PowerLeap Neo S370 is a unique, cost-effective FC-PGA to PPGA
converter that allows you to install an Intel Pentium III "Coppermine" into a
Socket 370 computer designed for an Intel Celeron CPU. With the Neo S370’s
unique technology, you can upgrade your Celeron CPU to a Pentium III while
still keeping your existing Socket 370 motherboard.
Although the FC-PGA and Celeron CPUs are designed for Socket 370, there are
differences in the pin definitions and voltage requirements for these CPUs. For
this reason, an FC-PGA CPU will not run when directly inserted in the
processor socket of a motherboard designed for the Celeron. The Neo S370
adapts the pin signals of FC-PGA CPUs so that they can run on motherboards
with the PPGA form factor.
Special Features
The PowerLeap Neo S370 provides the following advanced features:
#" Supports Intel Pentium III (100/133MHz) CPUs in the FC-PGA package.
(Note: In order to use the Pentium III at 100MHz or 133MHz, your
motherboard must support the 100MHz or 133MHz frontside bus,
#" When used with * SMP-compliant CPUs, supports SMP (Symmetric
Multi-Processing) on dual-Socket 370 motherboards.
It is important to note that not all Pentium III (FC-PGA) CPUs are SMP compliant. To see if Pentium
III CPU supports dual-processor operation, you need to know the version of the CPU (called
“stepping”). Check the Intel web site to see an updated list of the Pentium III CPUs and whether they
support dual-processor operation.
#" Includes a LED safety feature that signals whether there is still power
running through the motherboard. If the LED is emitting a light, do not
remove the Neo S370.
#" Allows drop-in CPU replacement, with no software drivers to install.
#" Compatible with the PowerLeap PL-PII and other slotkets.
What You Have
In addition to this Installation Guide, the PowerLeap Neo S370 converter upgrade
kit includes:
#" The PowerLeap Neo S370 converter
LED Indicator
Pin 1
S1 DIP Switches
PowerLeap Neo S370
#" PowerLeap CPU heatsink/cooling fan
#" Thermal conductive pad
Inserting an FC-PGA CPU into the Neo S370
Inserting an FC-PGA CPU into the
Neo S370
This section describes inserting an Intel FC-PGA Pentium III (100/133MHz)
CPU into your Neo S370 converter.
When inserting the CPU into the Neo S370, do not touch the FC-PGA
CPU Die.
About the FC-PGA Form Factor
The FC-PGA ("Flip Chip" Pin Grid Array) form factor is a new chip packaging
designed for Intel Pentium III "Coppermine" processors. On the FC-PGA
package, the processor's silicon core faces up and is exposed. In contrast, the
silicon core of a PPGA (Plastic Pin Grid Array) form factor faces down toward
the socket.
The FC-PGA allows the core to have direct contact with a heatsink. However,
this also makes the CPU much more fragile than a PPGA form factor CPU.
Silicon Die
Inserting an FC-PGA CPU into the Neo S370
Before Insertion
Prior to installation, take your Neo S370 from its packing and remove the
protective wrapping, taking care not to damage the pins. Next remove the
included CPU heatsink/cooling fan.
Always handle the Neo S370 and your new FC-PGA CPU by the edges and avoid
touching its pins.
Before installing the Neo S370 or handling your new FC-PGA CPU, we strongly
recommend the following:
#" Use a grounding strap or touching the power supply of the computer
before installation to release any static electricity build-up. If possible
work in a clean and static-free area. For example, carpeted areas are very
susceptible to static electricity build-up. Concrete or other non-carpeted
surfaces are less likely to create static electricity build-up.
#" Do not touch the silicon die on the CPU. The silicon die is the blue or
silver square on the surface of the FC-PGA CPU.
Your PowerLeap Neo S370 converter is a static-sensitive device. It is
susceptible to damage if not protected during installation.
Inserting an FC-PGA CPU into the Neo S370
Specifying the CPU Bus Settings
This section shows you the correct S1 DIP switch settings to choose depending
on your CPU bus speed.
You must apply the correct S1 DIP switch settings before you insert your new
CPU into the Neo S370.
CPU Bus Speed
S1 Settings
100MHz (D efault)
S1 Settings
Inserting an FC-PGA CPU into the Neo S370
This section describes inserting an FC-PGA CPU into the Neo S370.
$ " To insert an FC-PGA CPU into the Neo S370:
1. Place the Neo S370 on a flat surface.
2. Set the S1 DIP switch settings to correspond to your CPU bus speed.
Refer to “Specifying the CPU Bus Settings”.
Inserting an FC-PGA CPU into the Neo S370
3. Locate pin 1 on the CPU and the Neo S370. A triangular tab indicates the pin
1 corner of a Pentium III CPU.
Pin 1
Pin 1
4. Align both pin 1 corners and place the FC-PGA CPU on the Neo S370.
Pin 1
Make sure the CPU is properly inserted in the Neo S370 before applying
5. Pick up the combined unit by the edges with both hands and verify pin 1
alignment is correct.
Inserting an FC-PGA CPU into the Neo S370
6. Squeeze the unit together using evenly applied pressure.
If the FC-PGA CPU does not easily fit, do not force it. Verify pin 1 alignment
is correct.
7. Make sure the new CPU is firmly seated in the Neo S370.
DO NOT try to remove the FC-PGA CPU yourself if you have incorrectly
inserted it into the Neo S370.
Inserting an FC-PGA CPU into the Neo S370
Installing the Neo S370 in a ZIF Socket
Installing the Neo S370 in a ZIF
This section describes placing the Neo S370 into a ZIF socket on your
motherboard. In addition, it shows you how to place the thermal conductive
pad on the FC-PGA silicon die.
You must correctly apply the conductive thermal pad. The silicon die of a
FC-PGA form factor CPU is mounted directly on the topside of the CPU. The
thermal pad not only acts as a cushion to protect the exposed silicon die, but
also helps dissipate heat evenly.
Before continuing with this section, make sure you have properly inserted your
new FC-PGA CPU into the Neo S370. Refer to the Correct and Incorrect
pictures in the previous chapter to verify correct position.
$ " To install the Neo S370 in a ZIF socket:
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
4. Locate your existing CPU on the computer’s motherboard.
5. Remove the existing CPU cooling fan.
Installing the Neo S370 in a ZIF Socket
6. Remove the existing CPU from the ZIF socket.
7. Make sure that pin 1 of the Neo S370 is properly aligned with pin 1 of the ZIF
8. Install the new Neo S370 into your computer’s ZIF socket. If the Neo S370
does not easily fit, do not force it. Verify pin 1 alignment is correct.
Silicon Die
Pin 1
Installing the Neo S370 in a ZIF Socket
Pin 1 of the Neo S370 must match the pin 1 hole of the ZIF socket.
9. Lock the Neo S370 into the ZIF socket by pressing the socket arm down.
10. Place the thermal pad squarely on the FC-PGA silicon die.
Installing the Neo S370 in a ZIF Socket
Installing the CPU Heatsink/Fan
Installing the CPU Heatsink/Fan
This section describes installing your new CPU heatsink/fan. Do not use your
old CPU heatsink/fan with your CPU upgrade.
In addition to the added height of the Neo S370 converter, a heatsink designed
for use with a PPGA CPU (Celeron) does not work with a FC-PGA CPU because
it applies load to the center of the socket body. This places uneven force on the
exposed silicon die and results in a tilted heatsink reducing thermal transfer rate.
$ " To install the CPU heatsink/fan:
1. Make sure the area around the heatsink clip hooks is clear and tall
components do not interfere with the CPU heatsink/fan.
2. Place the CPU heatsink/fan on the FC-PGA CPU. The thumb tab of the clip
should face the housing of the socket arm.
3. Make sure the CPU heatsink/fan’s thermal pad rests squarely on the silicon
die. The die will be a blue or silver color.
Installing the CPU Heatsink/Fan
4. Attach the clip on the opposite side of the socket arm housing to its socket
5. Fasten the thumb tab side of the clip to its socket tab.
6. Connect the fan cable to the appropriate header on the motherboard.
Frequently Asked Questions
Frequently Asked Questions
Will I be able to use my current heatsink/fan when the Neo S370 is installed?
I have read that because the FC-PGA core is so close to the top of the CPU
package, the CPU is incompatible with current Socket 370 heatsinks.
We've designed the Neo S370 with a thin 2-layer PCB, but to eliminate any
potential problems that could arise with incompatible heatsinks/fans, we will
bundle a custom heatsink/fan with the Neo S370. We strongly recommend that
you not use your original CPU heatsink/fan with the Neo S370. In addition, each
Neo S370 will be bundled with a conductive thermal pad to protect the FC-PGA
die (the pad will act as a cushion for the heatsink/fan).
Does the Neo S370 support SMP (Symmetric Multi-Processing)?
The Neo S370 supports dual-CPU operation with SMP-enabled CPUs. However,
at the time of this writing Intel had not made SMP-enabled FC-PGA Pentium III
CPUs available.
For dual processor systems, is it possible to mix processors of different
steppings or types (for example, a 466MHz Celeron and a Pentium III 550)?
Intel supports mixed steppings for the Pentium III, but only with processors
that have identical family and model number as indicated by the CPUID
instruction (for more information, refer to "Intel Pentium III Processor
Specification Update, March 2000"). Intel does not support dual processors
running at different frequencies--"uncharacterized errata" may result. In dual
processor systems, the processor with the lowest feature set (as determined by
the CPUID Feature Bytes) must be the Bootstrap Processor (BSP). Using the
Neo S370, your system may function with dual processors of different
types--but the performance will not be significantly better than using the
Bootstrap Processor alone. For example, with a Celeron 466 and Pentium III 550
running on a 66MHz frontside bus, the Celeron must be the Bootstrap
Frequently Asked Questions
Processor and the Pentium III would operate at only 333MHz (66MHz x 5.5). In
addition, only 128KB of the Pentium III's L2 cache will be used.
Why does the Neo S370 use a LIF (Low Insertion Force) socket instead of a
ZIF socket?
The Neo S370 employs a customized 370-pin PGA socket. Using a ZIF socket
for the FC-PGA will cause mechanical problems.
Won't there be a problem with the FC-PGA CPU's operation if the
motherboard doesn't support a voltage as low as 1.6V?
This depends on your motherboard's VRM version. Motherboards released
prior to VRM v8.2 (including Slot 1 motherboards in the Pentium II
233/266/300 'Klamath' era) won't support a core voltage of less than 2.0V. These
boards can't take the 1.6V Pentium III even with the current Neo S370. (We're
considering designing a version of the Neo S370 that employs a stepping VRM.)
By the way, the Abit BP6 motherboard supports as low as 1.3V.
My motherboard will only go down to a CPU core voltage of 1.8V. Will the
Neo S370 lower the voltage to the 1.6V that is necessary for the Pentium III
We've decided not to offer this feature in the current version. All recent Socket
370 PGA motherboards support 1.6V. However, for the old Slot 1
motherboards, we'll add the step-down voltage support to the forthcoming
PL-PIII adapter (our latest Slot 1 upgrade). It'll use PowerLeap's patented IPS
(Independent Power Source) technology and give you as low as 1.3V VCore.
Can I use the Neo S370 with a slotket?
Yes. You can install the Neo S370 on PowerLeap's PL-PII and other
slot-to-socket adapters (slotkets).
Frequently Asked Questions
I inserted my FC-PGA CPU into the Neo S370 incorrectly. How can I remove
The pins on an FC-PGA CPU are more fragile than those on a Celeron CPU, and
are easily broken. If you insert the FC-PGA CPU in the Neo S370 incorrectly, do
not attempt to remove it by yourself. Instead, seek the help of an experienced
technician to help remove it. This precaution may prevent damage to your CPU.
Since the Pentium III CPU needs 1.6 volts, will my motherboard adjust itself
accordingly (assuming that the board supports that voltage) or will I need to
manually select a voltage of 1.6V?
Your motherboard will automatically adjust to the CPU voltage requirements
(assuming that the board supports under 2.0V).
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