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https://www.thinkwiki.org/w/index.php?title=Unofficial_maximum_memory_specs&diff=54960
Unofficial maximum memory specs
2013-11-28T17:40:15Z
<p>SteveMcIntyre: /* Working memory configurations */</p>
<hr />
<div>Some ThinkPads are known to support more memory than their specs say. This page gathers information about those models, how much memory they can take and what special requirements that memory must fulfill.<br />
<br />
Have a look at the [[Memory]] page for the official memory configs and partnumbers<br />
<br />
==Working memory configurations==<br />
The following table gives an overview of tested memory configurations that exceed the specified limits for that ThinkPad type.<br />
<br />
{| border="1" cellspacing="0" cellpadding="2"<br />
! ThinkPad !! Official Max !! Unoffical Max !! BIOS !! Embedded Controller !! Memory configuration successfully tested<br />
|- style="vertical-align:top;"<br />
| ThinkPad {{A31p}}<br />2653-R8U || 1 GB || 2 GB || 1.10 || 1.05 ||<br />
2 x Elpida 1 GB 200-pin DDR PC2700, FRU # 31P9835<br />
|-<br />
| ThinkPad {{A31p}}<br />2653-R?? || 1 GB || || 1.09 || 1.05 ||<br />
2 x Kingston 1GB 200-Pin DDR, Model# KTM - TP9828/1G<br />
|-<br />
| ThinkPad {{SL500}}<br /> || 4 GB || 8 GB || ?.?? || ?.?? ||<br />
2 x 4GB 200-Pin DDR2 PC2-5300<br />
|-<br />
| ThinkPad {{T30}}<br />2366-92U || 1 GB || || 2.08 || 1.06 ||<br />
2 x Kingmax 1GB 200-Pin DDR SO-DIMM DDR333 PC2700, Model# MSAD42D-KI<BR><br />
:But causes [[:Category:T30#Kernel_Panic|kernel to panic at boot]].<BR><br />
2 x Generic Brand 1GB 200-pin DDR SO-DIMM PC2700 (p/n 89898E):<br />
:BIOS recognizes 2048MB, but Gentoo sees only 1024MB<br />
|-<br />
| ThinkPad {{T42}} [[2373-CTO]] || 2 GB || || 3.17 || 3.04 ||<br />
??? <br />
|-<br />
| ThinkPad {{T42}} [[2373-CTO]] || 2 GB || || 3.23 || 3.04 ||<br />
??? <br />
|-<br />
| ThinkPad {{T43p}} 2668-WTB || 2 GB || || 1.29 || 1.06 ||<br />
* 2 x Kingston 1GB 200-Pin 533MHz DDR2, Model KTM-TP3840/1G DDR2 <br />
|-<br />
| ThinkPad {{T61}}<br />6466-9MG || 4 GB || 8 GB || [[BIOS_Upgrade#Alternative_BIOS:_Middleton_BIOS|2.29 middleton (SATA-II modified)]] || 1.08 ||<br />
2 x Crucial 4GB 200-Pin 800MHz DDR2, Model # CT51264AC800. (PC2-6400)<br />
|-<br />
| ThinkPad {{T61p}}<br />6457-5GG || 4 GB || 8 GB || 2.19 || 1.08 ||<br />
2 x Kingston 4GB 200-Pin 667MHz DDR2, Model # KTL-TP667/4GB.<br />
|-<br />
| ThinkPad {{T61p}}<br />6460-EEG || 4 GB || 8 GB || 2.27 middleton (SATA-II modified) || 1.08 ||<br />
2 x Samsung SODIMM 4GB PC2-5300 DDR2-667, Model # M470T5267AZ3-CE6 / 4GB.<br />
|-<br />
| ThinkPad {{T61p}}<br />6457-7XG || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x Crucial 4GB 200-Pin 800MHz DDR2, Model # CT51264AC800. (PC2-6400)<br />
|-<br />
| ThinkPad {{T61p}}<br />6457-BQG || 4 GB || 8 GB || 2.27 || 1.08 ||<br />
2 x Corsair 4GB 200-Pin 800MHz DDR2, Corsair ValueSelect SO-DIMM 4GB PC2-6400S CL6 VS4GSDS800D2 G .<br />
|-<br />
| ThinkPad {{T61p}}<br />6459-CTO || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x G.Skill 4GB 200-Pin 800MHz DDR2, Model # F2-6400CL6D-8GBSQ (PC2-6400)<br />
|-<br />
| ThinkPad {{T61p}}<br />6460-8YG || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x Crucial 4GB 200-Pin 667MHz DDR2, Model# CT2KIT51264AC667 ( 2x CT51264AC667)<br />
|-<br />
| ThinkPad {{T61p}}<br />6460-DVU || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x G.Skil 4GB 200-Pin 667MHz DDR2, Model# F2-5300CL5D-8GBSQ, CL5-5-5-15, PC2-5300<br />
|-<br />
| ThinkPad {{T61p}}<br />8889-3FG || 4 GB || 8 GB || TBA || TBA ||<br />
2 x Kingston 4GB 200-Pin 667MHz DDR2, KVR667D2S5/4G.<br />
|-<br />
| ThinkPad {{X31}} 2672-C2G || 1 GB || || 3.02 || 1.08 ||<br />
* 2 x 1GB Kingston KVR400X64SC3A/1G DDR400MHz. Newer documentation also states 2GB, but original one did not.<br />
* Boots with 1 bar.<br />
|-<br />
| ThinkPad {{X31}} 2673-C2G || 1 GB || || 3.02 || 1.08 ||<br />
* 2 x 1GB (Team Group Inc. TSDR1024M400 DDR400MHz)<br />
* Boots with 1 x TSDR1024M400<br />
|-<br />
| ThinkPad {{X41}} 2525-CTO || 1.5 GB || 2 GB || 2.09 || 1.02 ||<br />
* 1 x 2GB ( ??? )<br />
BIOS claims 2.5 GB. Diagnostic POST and memtest86+ both test only 2 GB. Linux and Windows XP recognize 2 GB.<br />
|-<br />
| ThinkPad {{X41}} 2528-5FU || 1.5 GB || || 2.09 || 1.02 ||<br />
* 1 x 2GB (Transcend TS2GIB3847 DDR2 667 MHz)<br />
* 1 x 2GB (FRU 73P3846 DDR2 PC2-4200)<br />
BIOS claims 2.5 GB. Diagnostic POST tests only 2 GB. Linux and XP recognize 2 GB.<br />
|-<br />
| ThinkPad {{X41}} 2525-F8G || 1.5 GB || 2 GB || 2.06 || 1.01 ||<br />
* 1 x 2GB (Crucial CT25664AC667 DDR2 PC2-5300)<br />
BIOS claims 2.5 GB. Diagnostic POST and memtest86+ both test only 2 GB. Linux and Windows XP recognize 2 GB.<br />
|-<br />
| ThinkPad {{X41_Tablet}} 1866-6HU || 1.5 GB || || 2.03 || 1.02 ||<br />
* 1 x 2GB (Transcend JM667QSU-2G DDR2 667 MHz)<br />
BIOS claims 2.5GB. Diagnostic POST tests only 2GB. Linux and Windows XP recognize 2GB.<br />
|-<br />
| ThinkPad {{X61}}<br />7675-K2U || 4 GB || 8 GB || ?.?? || ?.?? ||<br />
Kingston 8GB (set of 2x4GB) 200-Pin DDR2, KVR667D2S5K2/8G<br/>''Equivalent to 2 x Kingston KVR667D2S5/4G''<br />
|-<br />
| ThinkPad {{X61s}}<br />7666AK7 || 4GB || 8GB || 2.16 || 1.03 ||<br />
2 x Generic 4GB DDR2 SODIMM (200 pin) 667Mhz PC2 5400 / PC2 5300 CL 5.0<br />
|-<br />
| ThinkPad {{X61t}}<br />7764-CTO || 4 GB || 8 GB || 1.23 || ?.?? ||<br />
2 x Generic 4GB 200-Pin DDR2.<br />
|-<br />
| ThinkPad {{X61t}}<br />7762-94G || 4 GB || 8 GB || 1.23 || 1.02 ||<br />
2 x Kingston 4GB 200-Pin DDR2, KVR667D2S5/4G.<br />
|-<br />
| ThinkPad {{X61t}}<br />7762-95G || 4 GB || 8 GB || 1.23 || 1.02 ||<br />
2 x Kingston 4GB 200-Pin DDR2, KVR667D2S5/4G. Ubuntu 10.10 64bit shows installed memory size of 7,7 GiB.<br />
|-<br />
|ThinkPad {{X100e}}<br />3508-CTO || 4GB || 8GB || 1.29 || 1.22 ||<br />
2 x G.Skill 4GB 200-Pin 800MHz DDR2, Model # F2-6400CL6D-8GBSQ (PC2-6400)<br />
|-<br />
|ThinkPad {{X120e}}<br />0596-CTO || 4GB || 8GB || ?.?? || ?.?? ||<br />
2 x Kingston KVR1066D3S7/4G = 8GB SODIMM DDR3 1066MHz CL7<br />
|-<br />
| ThinkPad {{X200}}<br />7459-W2H || 4 GB || 8 GB || 3.13 || 1.06 ||<br />
2 x KVR1066D3S7/4G.<br />
|-<br />
| ThinkPad {{X200}}<br />7459-GH6 || 4 GB || 8 GB || 3.22 || 1.07 ||<br />
2 x Samsung M471B5273DM0-CH9 = 2x4GB SODIMM DDR 1333MHz<br />
|-<br />
| ThinkPad {{X200s}}<br />7466-9QG || 4 GB || 8 GB || 3.11 || 1.06 ||<br />
2 x KVR1333D3S9/4G.<br />
|-<br />
| ThinkPad {{X220}}<br />4290-2WG || 8 GB || 16 GB || 8DET58WW (1.28) || 8DHT29WW (1.13) ||<br />
2 x Micron CT102464BF160B.C16FER = 2x8GB SODIMM DDR3 1600MHz<br />
|-<br />
| ThinkPad {{240}}<br />2609-40U || 320MByte || || IRETWWW76 || n/a ||<br />
* Any PC100 256MB memory in 16-chip configuration<br />
|-<br />
| ThinkPad {{240X}}<br /> || 256MByte || || unknown || n/a ||<br />
* Some PC100 256MB memory in 16-chip configuration may work. Chipset cannot handle more than 256MB<br />
|-<br />
| ThinkPad {{570}}<br />2644-3AU || 320MB || || 1.16 IMET65WW 11/11/99 || n/a ||<br />
* Kingston KTM-TP390X/256 256MB MODULE FRU 16P6327 - 16 chips, 8 each side<br />
|-<br />
| ThinkPad {{600}}<br /> ? || 288MB || || ? || ? ||<br />
* 416MB = 256MB '''low density''' PC100 SODIMM + 128MB PC66 SODIMM + 32MB PC66 on-board. It matters which SODIMM you put in which slot. This was first reported working on the [http://zurich.csail.mit.edu/hypermail/thinkpad/2004-04/0797.html Thinkpad Mailing List], and it worked error-free for me.<br />
The 600E (2645-8A0) with Bios INET36WW accept two modules <br />
of 256MB.<br />
The ram modules have 8 chips on each side.<br />
That results in 544MB. (RAM Typ: Micron MT16LSDF3264HG-133E4 PC133 CL3 sync).<br />
Processor is an Intel PII 366 PE, installed platform is Windows XP Pro with SP3.<br />
|-<br />
| ThinkPad {{770X}}<br />9549|| 448MB || || 1.11 IIET42WW 09/10/99 || n/a ||<br />
* 448MB = 256MB PC100 + 128MB PC66 + internal 64MB using IBM 256MB MODULE FRU 33L3070 PC100 CL2 - 16 chips, 8 each side<br />
* 512MB = 2 x 256MB PC100 + 64MB internal booted up as well. 512MB is due to 440LX-Chipset limitations, 64MB are overlapping or unused.<br />
|-<br />
|}<br />
<br />
==Non-working memory configurations==<br />
{| border="1" cellspacing="0" cellpadding="2"<br />
! ThinkPad !! max. Specs !! BIOS !! Embedded Controller !! Memory configuration unsuccessfully tested<br />
|- style="vertical-align:top;"<br />
| ThinkPad {{A21m}}<br /> || 512MB || ? || ? ||<br />
* 2 x Microx 144-pin 512MB PC133 SDRAM SODIMM 32x16 8C<br />
* 1 x Microx 144-pin 512MB PC133 SDRAM SODIMM 32x16 8C<br />
* 1 x Microx 144-pin 512MB PC133 SDRAM SODIMM 32x16 8C<br />
:+ 1 x 144-pin 256MB PC133 SDRAM SODIMM<br />
|- style="vertical-align:top;"<br />
| ThinkPad<br>{{T61p}}<br>6460-DVU || 4GB || 7LETC7WW (2.27)<br>04/08/2010 || 1.08 || 6GB:<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4GB: Micron MT16HTS51264HY<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2GB: Kingston KTH-ZD8000C6<br><br />
Passed Windows Memory Diagnostic (Standard),<br><br />
but system became slightly unstable, app crash every 1-2 hours,<br><br />
failed Lenovo Toolbox memory test.<br />
|-<br />
|- style="vertical-align:top;"<br />
| ThinkPad<br>{{T43}} || 3GB || 1YET62WW (1.27 ) || 1YHT29WW-1.06 || 3GB:<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2GB: Micron<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1GB: Kingston<br><br />
In 2+1 configuration system doesn't starts (black screen constantly).<br />
In 1+2 configuration system works, but sees only 2GB in BIOS and Linux.<br />
|-<br />
| ThinkPad<br>{{X200s}} || 4GB || 3.17 || 1.06 || 8GB:<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4GB: Kingston<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4GB: Kingston<br><br />
0 + 4: System starts but stops before bootloader (GRUB).<br><br />
4 + 4: System starts, OS boots. But several issues:<br><br />
''Segmentation faults'': Memory intensive apps crashing randomly (eclipse)<br><br />
''WLAN instability issues'': driver keeps disconnecting under load<br><br />
''Graphic card errors'': [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung<br />
|-<br />
|}<br />
<br />
==External Sources==<br />
* [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-55644 IBM's official Memory compatibility page]</div>
SteveMcIntyre
https://www.thinkwiki.org/w/index.php?title=Unofficial_maximum_memory_specs&diff=54959
Unofficial maximum memory specs
2013-11-28T17:36:11Z
<p>SteveMcIntyre: Added X220 16GB configuration</p>
<hr />
<div>Some ThinkPads are known to support more memory than their specs say. This page gathers information about those models, how much memory they can take and what special requirements that memory must fulfill.<br />
<br />
Have a look at the [[Memory]] page for the official memory configs and partnumbers<br />
<br />
==Working memory configurations==<br />
The following table gives an overview of tested memory configurations that exceed the specified limits for that ThinkPad type.<br />
<br />
{| border="1" cellspacing="0" cellpadding="2"<br />
! ThinkPad !! Official Max !! Unoffical Max !! BIOS !! Embedded Controller !! Memory configuration successfully tested<br />
|- style="vertical-align:top;"<br />
| ThinkPad {{A31p}}<br />2653-R8U || 1 GB || 2 GB || 1.10 || 1.05 ||<br />
2 x Elpida 1 GB 200-pin DDR PC2700, FRU # 31P9835<br />
|-<br />
| ThinkPad {{A31p}}<br />2653-R?? || 1 GB || || 1.09 || 1.05 ||<br />
2 x Kingston 1GB 200-Pin DDR, Model# KTM - TP9828/1G<br />
|-<br />
| ThinkPad {{SL500}}<br /> || 4 GB || 8 GB || ?.?? || ?.?? ||<br />
2 x 4GB 200-Pin DDR2 PC2-5300<br />
|-<br />
| ThinkPad {{T30}}<br />2366-92U || 1 GB || || 2.08 || 1.06 ||<br />
2 x Kingmax 1GB 200-Pin DDR SO-DIMM DDR333 PC2700, Model# MSAD42D-KI<BR><br />
:But causes [[:Category:T30#Kernel_Panic|kernel to panic at boot]].<BR><br />
2 x Generic Brand 1GB 200-pin DDR SO-DIMM PC2700 (p/n 89898E):<br />
:BIOS recognizes 2048MB, but Gentoo sees only 1024MB<br />
|-<br />
| ThinkPad {{T42}} [[2373-CTO]] || 2 GB || || 3.17 || 3.04 ||<br />
??? <br />
|-<br />
| ThinkPad {{T42}} [[2373-CTO]] || 2 GB || || 3.23 || 3.04 ||<br />
??? <br />
|-<br />
| ThinkPad {{T43p}} 2668-WTB || 2 GB || || 1.29 || 1.06 ||<br />
* 2 x Kingston 1GB 200-Pin 533MHz DDR2, Model KTM-TP3840/1G DDR2 <br />
|-<br />
| ThinkPad {{T61}}<br />6466-9MG || 4 GB || 8 GB || [[BIOS_Upgrade#Alternative_BIOS:_Middleton_BIOS|2.29 middleton (SATA-II modified)]] || 1.08 ||<br />
2 x Crucial 4GB 200-Pin 800MHz DDR2, Model # CT51264AC800. (PC2-6400)<br />
|-<br />
| ThinkPad {{T61p}}<br />6457-5GG || 4 GB || 8 GB || 2.19 || 1.08 ||<br />
2 x Kingston 4GB 200-Pin 667MHz DDR2, Model # KTL-TP667/4GB.<br />
|-<br />
| ThinkPad {{T61p}}<br />6460-EEG || 4 GB || 8 GB || 2.27 middleton (SATA-II modified) || 1.08 ||<br />
2 x Samsung SODIMM 4GB PC2-5300 DDR2-667, Model # M470T5267AZ3-CE6 / 4GB.<br />
|-<br />
| ThinkPad {{T61p}}<br />6457-7XG || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x Crucial 4GB 200-Pin 800MHz DDR2, Model # CT51264AC800. (PC2-6400)<br />
|-<br />
| ThinkPad {{T61p}}<br />6457-BQG || 4 GB || 8 GB || 2.27 || 1.08 ||<br />
2 x Corsair 4GB 200-Pin 800MHz DDR2, Corsair ValueSelect SO-DIMM 4GB PC2-6400S CL6 VS4GSDS800D2 G .<br />
|-<br />
| ThinkPad {{T61p}}<br />6459-CTO || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x G.Skill 4GB 200-Pin 800MHz DDR2, Model # F2-6400CL6D-8GBSQ (PC2-6400)<br />
|-<br />
| ThinkPad {{T61p}}<br />6460-8YG || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x Crucial 4GB 200-Pin 667MHz DDR2, Model# CT2KIT51264AC667 ( 2x CT51264AC667)<br />
|-<br />
| ThinkPad {{T61p}}<br />6460-DVU || 4 GB || 8 GB || 2.26 || 1.08 ||<br />
2 x G.Skil 4GB 200-Pin 667MHz DDR2, Model# F2-5300CL5D-8GBSQ, CL5-5-5-15, PC2-5300<br />
|-<br />
| ThinkPad {{T61p}}<br />8889-3FG || 4 GB || 8 GB || TBA || TBA ||<br />
2 x Kingston 4GB 200-Pin 667MHz DDR2, KVR667D2S5/4G.<br />
|-<br />
| ThinkPad {{X31}} 2672-C2G || 1 GB || || 3.02 || 1.08 ||<br />
* 2 x 1GB Kingston KVR400X64SC3A/1G DDR400MHz. Newer documentation also states 2GB, but original one did not.<br />
* Boots with 1 bar.<br />
|-<br />
| ThinkPad {{X31}} 2673-C2G || 1 GB || || 3.02 || 1.08 ||<br />
* 2 x 1GB (Team Group Inc. TSDR1024M400 DDR400MHz)<br />
* Boots with 1 x TSDR1024M400<br />
|-<br />
| ThinkPad {{X41}} 2525-CTO || 1.5 GB || 2 GB || 2.09 || 1.02 ||<br />
* 1 x 2GB ( ??? )<br />
BIOS claims 2.5 GB. Diagnostic POST and memtest86+ both test only 2 GB. Linux and Windows XP recognize 2 GB.<br />
|-<br />
| ThinkPad {{X41}} 2528-5FU || 1.5 GB || || 2.09 || 1.02 ||<br />
* 1 x 2GB (Transcend TS2GIB3847 DDR2 667 MHz)<br />
* 1 x 2GB (FRU 73P3846 DDR2 PC2-4200)<br />
BIOS claims 2.5 GB. Diagnostic POST tests only 2 GB. Linux and XP recognize 2 GB.<br />
|-<br />
| ThinkPad {{X41}} 2525-F8G || 1.5 GB || 2 GB || 2.06 || 1.01 ||<br />
* 1 x 2GB (Crucial CT25664AC667 DDR2 PC2-5300)<br />
BIOS claims 2.5 GB. Diagnostic POST and memtest86+ both test only 2 GB. Linux and Windows XP recognize 2 GB.<br />
|-<br />
| ThinkPad {{X41_Tablet}} 1866-6HU || 1.5 GB || || 2.03 || 1.02 ||<br />
* 1 x 2GB (Transcend JM667QSU-2G DDR2 667 MHz)<br />
BIOS claims 2.5GB. Diagnostic POST tests only 2GB. Linux and Windows XP recognize 2GB.<br />
|-<br />
| ThinkPad {{X61}}<br />7675-K2U || 4 GB || 8 GB || ?.?? || ?.?? ||<br />
Kingston 8GB (set of 2x4GB) 200-Pin DDR2, KVR667D2S5K2/8G<br/>''Equivalent to 2 x Kingston KVR667D2S5/4G''<br />
|-<br />
| ThinkPad {{X61s}}<br />7666AK7 || 4GB || 8GB || 2.16 || 1.03 ||<br />
2 x Generic 4GB DDR2 SODIMM (200 pin) 667Mhz PC2 5400 / PC2 5300 CL 5.0<br />
|-<br />
| ThinkPad {{X61t}}<br />7764-CTO || 4 GB || 8 GB || 1.23 || ?.?? ||<br />
2 x Generic 4GB 200-Pin DDR2.<br />
|-<br />
| ThinkPad {{X61t}}<br />7762-94G || 4 GB || 8 GB || 1.23 || 1.02 ||<br />
2 x Kingston 4GB 200-Pin DDR2, KVR667D2S5/4G.<br />
|-<br />
| ThinkPad {{X61t}}<br />7762-95G || 4 GB || 8 GB || 1.23 || 1.02 ||<br />
2 x Kingston 4GB 200-Pin DDR2, KVR667D2S5/4G. Ubuntu 10.10 64bit shows installed memory size of 7,7 GiB.<br />
|-<br />
|ThinkPad {{X100e}}<br />3508-CTO || 4GB || 8GB || 1.29 || 1.22 ||<br />
2 x G.Skill 4GB 200-Pin 800MHz DDR2, Model # F2-6400CL6D-8GBSQ (PC2-6400)<br />
|-<br />
|ThinkPad {{X120e}}<br />0596-CTO || 4GB || 8GB || ?.?? || ?.?? ||<br />
2 x Kingston KVR1066D3S7/4G = 8GB SODIMM DDR3 1066MHz CL7<br />
|-<br />
| ThinkPad {{X200}}<br />7459-W2H || 4 GB || 8 GB || 3.13 || 1.06 ||<br />
2 x KVR1066D3S7/4G.<br />
|-<br />
| ThinkPad {{X200}}<br />7459-GH6 || 4 GB || 8 GB || 3.22 || 1.07 ||<br />
2 x Samsung M471B5273DM0-CH9 = 2x4GB SODIMM DDR 1333MHz<br />
|-<br />
| ThinkPad {{X200s}}<br />7466-9QG || 4 GB || 8 GB || 3.11 || 1.06 ||<br />
2 x KVR1333D3S9/4G.<br />
|-<br />
| ThinkPad {{X220}}<br />4290-2WG || 8 GB || 16 GB || ?.?? || ?.?? ||<br />
2 x Micron CT102464BF160B.C16FER = 2x8GB SODIMM DDR3 1600MHz<br />
|-<br />
| ThinkPad {{240}}<br />2609-40U || 320MByte || || IRETWWW76 || n/a ||<br />
* Any PC100 256MB memory in 16-chip configuration<br />
|-<br />
| ThinkPad {{240X}}<br /> || 256MByte || || unknown || n/a ||<br />
* Some PC100 256MB memory in 16-chip configuration may work. Chipset cannot handle more than 256MB<br />
|-<br />
| ThinkPad {{570}}<br />2644-3AU || 320MB || || 1.16 IMET65WW 11/11/99 || n/a ||<br />
* Kingston KTM-TP390X/256 256MB MODULE FRU 16P6327 - 16 chips, 8 each side<br />
|-<br />
| ThinkPad {{600}}<br /> ? || 288MB || || ? || ? ||<br />
* 416MB = 256MB '''low density''' PC100 SODIMM + 128MB PC66 SODIMM + 32MB PC66 on-board. It matters which SODIMM you put in which slot. This was first reported working on the [http://zurich.csail.mit.edu/hypermail/thinkpad/2004-04/0797.html Thinkpad Mailing List], and it worked error-free for me.<br />
The 600E (2645-8A0) with Bios INET36WW accept two modules <br />
of 256MB.<br />
The ram modules have 8 chips on each side.<br />
That results in 544MB. (RAM Typ: Micron MT16LSDF3264HG-133E4 PC133 CL3 sync).<br />
Processor is an Intel PII 366 PE, installed platform is Windows XP Pro with SP3.<br />
|-<br />
| ThinkPad {{770X}}<br />9549|| 448MB || || 1.11 IIET42WW 09/10/99 || n/a ||<br />
* 448MB = 256MB PC100 + 128MB PC66 + internal 64MB using IBM 256MB MODULE FRU 33L3070 PC100 CL2 - 16 chips, 8 each side<br />
* 512MB = 2 x 256MB PC100 + 64MB internal booted up as well. 512MB is due to 440LX-Chipset limitations, 64MB are overlapping or unused.<br />
|-<br />
|}<br />
<br />
==Non-working memory configurations==<br />
{| border="1" cellspacing="0" cellpadding="2"<br />
! ThinkPad !! max. Specs !! BIOS !! Embedded Controller !! Memory configuration unsuccessfully tested<br />
|- style="vertical-align:top;"<br />
| ThinkPad {{A21m}}<br /> || 512MB || ? || ? ||<br />
* 2 x Microx 144-pin 512MB PC133 SDRAM SODIMM 32x16 8C<br />
* 1 x Microx 144-pin 512MB PC133 SDRAM SODIMM 32x16 8C<br />
* 1 x Microx 144-pin 512MB PC133 SDRAM SODIMM 32x16 8C<br />
:+ 1 x 144-pin 256MB PC133 SDRAM SODIMM<br />
|- style="vertical-align:top;"<br />
| ThinkPad<br>{{T61p}}<br>6460-DVU || 4GB || 7LETC7WW (2.27)<br>04/08/2010 || 1.08 || 6GB:<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4GB: Micron MT16HTS51264HY<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2GB: Kingston KTH-ZD8000C6<br><br />
Passed Windows Memory Diagnostic (Standard),<br><br />
but system became slightly unstable, app crash every 1-2 hours,<br><br />
failed Lenovo Toolbox memory test.<br />
|-<br />
|- style="vertical-align:top;"<br />
| ThinkPad<br>{{T43}} || 3GB || 1YET62WW (1.27 ) || 1YHT29WW-1.06 || 3GB:<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2GB: Micron<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1GB: Kingston<br><br />
In 2+1 configuration system doesn't starts (black screen constantly).<br />
In 1+2 configuration system works, but sees only 2GB in BIOS and Linux.<br />
|-<br />
| ThinkPad<br>{{X200s}} || 4GB || 3.17 || 1.06 || 8GB:<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4GB: Kingston<br><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4GB: Kingston<br><br />
0 + 4: System starts but stops before bootloader (GRUB).<br><br />
4 + 4: System starts, OS boots. But several issues:<br><br />
''Segmentation faults'': Memory intensive apps crashing randomly (eclipse)<br><br />
''WLAN instability issues'': driver keeps disconnecting under load<br><br />
''Graphic card errors'': [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung<br />
|-<br />
|}<br />
<br />
==External Sources==<br />
* [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-55644 IBM's official Memory compatibility page]</div>
SteveMcIntyre