Unofficial maximum memory specs
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.
Have a look at the Memory page for the official memory configs and partnumbers
Working memory configurations
The following table gives an overview of tested memory configurations that exceed the specified limits for that ThinkPad type.
ThinkPad | max. Specs | BIOS | Embedded Controller | Memory configuration successfully tested |
---|---|---|---|---|
ThinkPad T61p 6457-5GG |
4 GB | 2.19 | 1.08 |
2 x Kingston 4GB 200-Pin DDR2, Model# KTL-TP667/4GB |
ThinkPad A31p 2653-R |
1 GB | 1.09 | 1.05 |
2 x Kingston 1GB 200-Pin DDR, Model# KTM - TP9828/1G |
ThinkPad T30 2366-92U |
1 GB | 2.08 | 1.06 |
but see problem with T30 not booting with 1 GiB memory module.
BIOS recognizes 2048MB, but Gentoo sees only 1024MB |
ThinkPad T43p 2668-WTB | 2 GB | 1.29 | 1.06 |
|
ThinkPad X31 2672-C2G | 1 GB | 3.02 | 1.08 |
|
ThinkPad X31 2673-C2G | 1 GB | 3.02 | 1.08 |
|
ThinkPad X41 2528-5FU | 1.5 GB | 2.09 | 1.02 |
BIOS claims 2.5 GB. Diagnostic POST tests only 2 GB. Linux and XP recognize 2 GB. |
X41 Tablet 1866-6HU | 1.5 GB | 2.03 | 1.02 |
BIOS claims 2.5GB. Diagnostic POST tests only 2GB. Linux and WindowsXP recognize 2GB. |
ThinkPad 240 2609-40U |
320MByte | IRETWWW76 | n/a |
|
ThinkPad 240X |
256MByte | unknown | n/a |
|
ThinkPad 570 2644-3AU |
320MB | 1.16 IMET65WW 11/11/99 | n/a |
|
ThinkPad 600 ? |
288MB | ? | ? |
The 600E (2645-8A0) with Bios INET36WW accept two modules of 256MB. The ram modules have 8 chips on each side. That results in 544MB. (RAM Typ: Micron MT16LSDF3264HG-133E4 PC133 CL3 sync). Processor is an Intel PII 366 PE, installed platform is Windows XP Pro with SP3. |
ThinkPad 770x 9549 |
448MB | 1.11 IIET42WW 09/10/99 | n/a |
|
Non-working memory configurations
ThinkPad | max. Specs | BIOS | Embedded Controller | Memory configuration unsuccessfully tested |
---|---|---|---|---|
ThinkPad A21m |
512MB | ? | ? |
|