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PLEASE NOTE:
This product is no longer being manufactured by Intel. THESE DOCUMENTS ARE PROVIDED FOR HISTORICAL
REFERENCE PURPOSES ONLY AND ARE SUBJECT TO THE TERMS SET FORTH IN THE "LEGAL INFORMATION" LINK BELOW.
For information on currently available Intel products, please see
www.intel.com and/or developer.intel.com
End of Interactive Support
Intel is announcing the end of interactive support for the Intel® PR440FX Motherboard. See the End of Interactive Support Announcement for details.
The Intel®
PR440FX Motherboard supports 2.1 V to 3.3 V Pentium® Pro processors
operating at 180 MHz and 200 MHz. For motherboards with two processors
installed, a voltage regulator module (VRM) is required for the second
processor. The Pentium Pro processor integrates an internal nonblocking
second-level (L2) cache and cache controller. The motherboard supports
processors with 256 KB or 512 KB L2 cache. Changing the processor
requires changes in several jumper settings.
The Intel PR440FX Motherboard also supports the Pentium
II OverDrive® processor.
Warning: Processors not specifically listed by type and
rated speed may have requirements that are not supported by the
motherboard's design. Use of unsupported processors may result in
improper operation, damage to the motherboard or processor, or reduced
product life.
The following table shows the processor steppings that have been
qualified with the Intel PR440FX Motherboard:
Qualified Processor Steppings
| Speed/Cache
Size |
Qualified
Steppings |
| S-Spec |
Manufacturing
Stepping |
Cache
Stepping |
| 180/256 |
SY031 |
sA1 |
B |
| SY039 |
sA1 |
A |
| 200/256 |
SY032 |
sA1 |
B |
| SY040 |
sA1 |
B |
| SL22T |
sB1 |
B |
| SL22V |
sB1 |
B |
| 200/512
| SY048 |
sA1 |
B |
Intel PR440FX Motherboards with BIOS versions 1.00.02.DI0 or earlier
cannot be reliably operated with sB1 stepping Pentium Pro processors.
The failure symptoms include a) no video accompanied by a blinking
power LED, b) failure to recognize the second processor in a dual
processor configuration, or c) random system crashes. If BIOS version
1.00.02.DI0 is installed, you may be able to upgrade to the latest
BIOS version; this must be done with a single processor installed.
If the system has two processors installed, remove the second processor
before attempting the upgrade. If the BIOS upgrade procedure fails,
or if BIOS version 1.00.01.DI0 is installed, replace the sB1 stepping
processor with an sA1 stepping processor and then upgrade to the
latest BIOS version. Once the BIOS upgrade is complete you may reinstall
the sB1 stepping processor(s).
Type of second Pentium Pro processor that should be used on
the Intel PR440FX Motherboard
The second Pentium Pro processor on the Intel PR440FX Motherboard must
be the same speed and asecond-level cache size as the first processor.
The second processor must also be the same stepping as, or no more
than one stepping higher or lower than the primary processor. In
the following table, only the combinations of primary and secondary
processors marked "YES" are qualified for use in dual processor
Intel PR440FX Motherboards.
Combinations of Primary and Secondary Processors
| Speed/Cache
Size |
Primary
Processor |
Secondary
Processor |
| SY031 |
SY039 |
SY032 |
SY040 |
SL22T |
SL22V |
SY048 |
| 180/256 |
SY031 |
YES |
YES |
|
|
|
|
|
| SY039 |
YES |
YES |
|
|
|
|
|
| 200/256 |
SY032 |
|
|
YES |
YES |
YES |
YES |
|
| SY040 |
|
|
YES |
YES |
YES |
YES |
|
| SL22T |
|
|
YES |
YES |
YES |
YES |
|
| SL22V |
|
|
YES |
YES |
YES |
YES |
|
| 200/512 |
SY048 |
|
|
|
|
|
|
YES |
When the
Intel VRM need to be used
Motherboards with two processors require a VRM. There are two types
of VRMs: 5V and 12V. The Intel PR440FX Motherboard supports 5V modules.
Please refer to the Intel PR440FX Technical
Product Specification and Motherboard
Specification Update for details.
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