CPU upgrade - Revision history

Bugmenot2: /* Upgrading your A20m/A20p/A21m/A21p/A22m/A22p, T20/T21/T22's CPU */

2020-11-17T12:03:39Z

‎Upgrading your A20m/A20p/A21m/A21p/A22m/A22p, T20/T21/T22's CPU

Bugmenot2: added section for Coppermine-based models

2020-11-16T12:55:07Z

added section for Coppermine-based models

Tonko: Reverted edits by Edotowiza (Talk) to last version by GL1zdA

2010-11-17T04:09:59Z

Reverted edits by Edotowiza (Talk) to last version by GL1zdA

Edotowiza at 15:48, 15 November 2010

2010-11-15T15:48:01Z

GL1zdA: Linked with 770Z

2009-05-31T20:00:16Z

Linked with 770Z

Pgan: /* Upgrading your Pentium II to a Pentium III */ copy-edit

2007-03-23T19:23:46Z

‎Upgrading your Pentium II to a Pentium III: copy-edit

Pgan: /* Upgrading your Pentium II to a Pentium III */

2007-03-23T19:19:22Z

‎Upgrading your Pentium II to a Pentium III

Dchallet: /* Upgrading your Pentium II to a Pentium III */

2006-04-07T10:59:53Z

‎Upgrading your Pentium II to a Pentium III

Dchallet at 10:51, 7 April 2006

2006-04-07T10:51:02Z

New page

== Upgrading your Pentium II to a Pentium III ==

Thinkpads dating from around 1999-2000 have MMC2 CPU daughter boards, hence, can be upgraded.

The hardware maintenance manual explains in details how to proceed. The only catch is that the BIOS cannot activate the L2 cache of a Pentium III, which is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].

The good news is that the memory bus speed goes from 66MHz to 100MHz.

The other bad news is that the bios produces errors of type 127 when booting (press ESC, then F1). Fortunately, modifying one byte in the bios with the integrated bios editor cures definitely the problem (see [http://www.wimsbios.com/phpBB2/viewtopic.php?t=4046 this post])

Be carefull when choosing the speed of the new MMC2 daughter board, since there might be some problems with voltages/speedstep. 500MHz is a safe choice.

← Older revision		Revision as of 12:03, 17 November 2020
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	As these models use Socket 495 for CPU swaps, the CPU can be upgraded up to a Mobile Pentium 3 @ 1 GHz. It is recommended to install the most capable heatsink before doing this however, as the heat dissipation will be dramatically increased.		As these models use Socket 495 for CPU swaps, the CPU can be upgraded up to a Mobile Pentium 3 @ 1 GHz. It is recommended to install the most capable heatsink before doing this however, as the heat dissipation will be dramatically increased.

−	The CPU upgrade itself is a straight-swap, but be aware that the Mobile Pentium 3 @ 1 GHz has three known versions which differ in specifications (SL53S, SL58S, SL5TF). SL53S and SL58S are identical, but SL5TF is different as it has a slightly lower temperature tolerance. Whereas SL53S and SL58S are capable of withstanding up to 100 C or 212 F of heat, SL5TF cannot withstand the same amount of heat. Instead of 100 C or 212 F, it is only rated to withstand up to 92 C or 198 F of heat. Please consider your model's heatsink performance, if it is more than capable of keeping the ~~temperatures~~ below 90 C, SL5TF would be fine. If that is not the case, purchase an SL53S or SL58S.	+	The CPU upgrade itself is a straight-swap, but be aware that the Mobile Pentium 3 @ 1 GHz has three known versions which differ in specifications (SL53S, SL58S, SL5TF). SL53S and SL58S are identical, but SL5TF is different as it has a slightly lower temperature tolerance. Whereas SL53S and SL58S are capable of withstanding up to 100 C or 212 F of heat, SL5TF cannot withstand the same amount of heat. Instead of 100 C or 212 F, it is only rated to withstand up to 92 C or 198 F of heat. Please consider your model's heatsink performance, if it is more than capable of keeping the core temperature below 90 C, SL5TF would be fine. If that is not the case, purchase an SL53S or SL58S.

@@ Line 1: / Line 1: @@
-== Upgrading your Pentium II to a Pentium III ==
+=== Upgrading your Pentium 2 to a Pentium 3 ===
-Thinkpads dating from around 1999-2000 have MMC2 CPU daughter boards, and so can be upgraded.
+The [https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/37l5152.pdf hardware maintenance manual] explains in details how to proceed. The catch is that the BIOS cannot activate the L2 cache of a Pentium 3. This is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
-The [http://www-307.ibm.com/pc/support/site.wss/product.do?template=%2Fproductselection%2Flandingpages%2FbrowseByProductLandingPage.vm&sitestyle=lenovo&brandind=10&validate=true hardware maintenance manual] explains in details how to proceed. The catch is that the BIOS cannot activate the L2 cache of a Pentium III.  This is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
+The good news is that the memory bus speed goes from 66 MHz to 100 MHz. Although, the BGA RAM (or on-board RAM) may not be able to handle the increased bus speed. If this happens and instability occurs, you can bypass this problem by disabling the on-board RAM by setting byte 2B in the BIOS to 81.
-The good news is that the memory bus speed goes from 66MHz to 100MHz.
+The catch is that the BIOS produces an 'Error 127' message when booting (press ESC, then F1). This is solved by setting byte 0x20 in the BIOS to 0A, by using the integrated BIOS editor [http://www.wimsbios.com/phpBB2/viewtopic.php?t=4046 from this post].
-The catch is that the BIOS produces errors of type 127 when booting (press ESC, then F1).  This is solved by modifying one byte in the BIOS, using the integrated BIOS editor ([http://www.wimsbios.com/phpBB2/viewtopic.php?t=4046 this post]).
+Be careful when choosing the speed of the new MMC2 daughterboard, since there may be problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work too but stay at their lowest speed unless one uses physically modifies the daughter board (see the post above).
-Be careful when choosing the speed of the new MMC2 daughter board, since there may be problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work too but stay at their lowest speed unless one uses physically modifies the daughter board (see the post above).
+This upgrade does not apply to the {{390}}, {{600}}, {{770}}, {{770E}}, and the {{770ED}}, as they use a Pentium 2 MMC1 daughterboard. Such daughterboards that contain the Pentium 3 and are compatible with the MMC1 socket, does not exist.
-== Supported ThinkPads ==
+=== Upgrading your A20m/A20p/A21m/A21p/A22m/A22p, T20/T21/T22's CPU ===
-* ThinkPad {{770Z}}
+As these models use Socket 495 for CPU swaps, the CPU can be upgraded up to a Mobile Pentium 3 @ 1 GHz. It is recommended to install the most capable heatsink before doing this however, as the heat dissipation will be dramatically increased.

@@ Line 1: / Line 1: @@
->== Upgrading your Pentium II to a Pentium III ==
+== Upgrading your Pentium II to a Pentium III ==
 Thinkpads dating from around 1999-2000 have MMC2 CPU daughter boards, and so can be upgraded.
-The [http://www-307.ibm.com/pc/support/site.wss/product.do?template=%2Fproductselection%2Flandingpages%2FbrowseByProductLandingPage.vm&amp;sitestyle=lenovo&amp;brandind=10&amp;validate=true hardware maintenance manual] explains in details how to proceed. The catch is that the BIOS cannot activate the L2 cache of a Pentium III.  This is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
+The [http://www-307.ibm.com/pc/support/site.wss/product.do?template=%2Fproductselection%2Flandingpages%2FbrowseByProductLandingPage.vm&sitestyle=lenovo&brandind=10&validate=true hardware maintenance manual] explains in details how to proceed. The catch is that the BIOS cannot activate the L2 cache of a Pentium III.  This is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
 The good news is that the memory bus speed goes from 66MHz to 100MHz.
@@ Line 10: / Line 10: @@
 Be careful when choosing the speed of the new MMC2 daughter board, since there may be problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work too but stay at their lowest speed unless one uses physically modifies the daughter board (see the post above).
 == Supported ThinkPads ==
 * ThinkPad {{770Z}}

@@ Line 1: / Line 1: @@
-== Upgrading your Pentium II to a Pentium III ==
+>== Upgrading your Pentium II to a Pentium III ==
 Thinkpads dating from around 1999-2000 have MMC2 CPU daughter boards, and so can be upgraded.
-The [http://www-307.ibm.com/pc/support/site.wss/product.do?template=%2Fproductselection%2Flandingpages%2FbrowseByProductLandingPage.vm&sitestyle=lenovo&brandind=10&validate=true hardware maintenance manual] explains in details how to proceed. The catch is that the BIOS cannot activate the L2 cache of a Pentium III.  This is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
+The [http://www-307.ibm.com/pc/support/site.wss/product.do?template=%2Fproductselection%2Flandingpages%2FbrowseByProductLandingPage.vm&amp;sitestyle=lenovo&amp;brandind=10&amp;validate=true hardware maintenance manual] explains in details how to proceed. The catch is that the BIOS cannot activate the L2 cache of a Pentium III.  This is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
 The good news is that the memory bus speed goes from 66MHz to 100MHz.
@@ Line 10: / Line 10: @@
 Be careful when choosing the speed of the new MMC2 daughter board, since there may be problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work too but stay at their lowest speed unless one uses physically modifies the daughter board (see the post above).
 == Supported ThinkPads ==
 * ThinkPad {{770Z}}

← Older revision		Revision as of 20:00, 31 May 2009
Line 10:		Line 10:

	Be careful when choosing the speed of the new MMC2 daughter board, since there may be problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work too but stay at their lowest speed unless one uses physically modifies the daughter board (see the post above).		Be careful when choosing the speed of the new MMC2 daughter board, since there may be problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work too but stay at their lowest speed unless one uses physically modifies the daughter board (see the post above).
		+
		+	== Supported ThinkPads ==
		+	* ThinkPad {{770Z}}

@@ Line 3: / Line 3: @@
 Thinkpads dating from around 1999-2000 have MMC2 CPU daughter boards, hence, can be upgraded.
-The hardware maintenance manual explains in details how to proceed. The only catch is that the BIOS cannot activate the L2 cache of a Pentium III, which is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
+The [http://www-307.ibm.com/pc/support/site.wss/product.do?template=%2Fproductselection%2Flandingpages%2FbrowseByProductLandingPage.vm&sitestyle=lenovo&brandind=10&validate=true hardware maintenance manual] explains in details how to proceed. The only catch is that the BIOS cannot activate the L2 cache of a Pentium III, which is solved by using a [http://www.maths.ox.ac.uk/~challet/module/module.html kernel module].
 The good news is that the memory bus speed goes from 66MHz to 100MHz.

← Older revision		Revision as of 10:59, 7 April 2006
Line 9:		Line 9:
	The other bad news is that the bios produces errors of type 127 when booting (press ESC, then F1). Fortunately, modifying one byte in the bios with the integrated bios editor cures definitely the problem (see [http://www.wimsbios.com/phpBB2/viewtopic.php?t=4046 this post])		The other bad news is that the bios produces errors of type 127 when booting (press ESC, then F1). Fortunately, modifying one byte in the bios with the integrated bios editor cures definitely the problem (see [http://www.wimsbios.com/phpBB2/viewtopic.php?t=4046 this post])

−	Be carefull when choosing the speed of the new MMC2 daughter board, since there might be some problems with voltages/speedstep. 500MHz is a safe choice.	+	Be carefull when choosing the speed of the new MMC2 daughter board, since there might be some problems with voltages/speedstep. 500MHz is a safe choice. Processors with SpeedStep seem to work as well although they stay at their lowest speed unless one uses modifies physically the daughter board (see the post above).