First, you need to identify the FRU number of motherboard.
http://support.lenovo.com/en_US/product ... ookup.page
http://www-947.ibm.com/support/entry/portal/parts
Next, you need to search through parts description in buildsheet until you encounter the Planar Card...
For Example:
"SYSTMBRD FRU PLANAR CARD ASM INTEL C Y "
Next, you would like to have a motherboard which supports Penryn CPU(s).
T7100, T7300, T7500, T7700 & T7800 are T61 Merom CPU(s).
http://www.thinkwiki.org/wiki/Intel_Core_2_Duo_(Merom)
T8100, T8300, T9300, & T9500 are T61 Penryn CPU(s).
http://www.thinkwiki.org/wiki/Intel_Core_2_Duo_(Penryn)
Next, using FRU number of motherboard from buildsheet showing Planar Card...
Combining info from
http://thinkwiki.de/T61
and my notes from Tuus previous posts...
---> 14.1" 4:3 <---
Intel GM965 Nvidia NVS140 Nvidia Quadro FX 570M (T61p)
42W7648 Merom, FPR 42W7649 Merom 42W7650 Merom
42W7872 Penryn 42W7873 Penryn 42W7874 Penryn
nvs140m nvidia
42w7649 (merom)
42w7873 (penryn)
fx570m nvidia
42w7650 (merom)
42w7874 (penryn)
Intel
42w7648 (merom)
42w7872 (penryn)
---> 14.1" 16:10 <---
Intel GM965 Nvidia NVS140
41W1487 Merom 41W1489 Merom
42W7866 Penryn 44C3933/42W7867 Penryn
---> 15.4" 16:10 <---
Intel GM965 Nvidia NVS140 Nvidia Quadro FX 570M (T61p)
42W7651 Merom 42W7652 Merom 42W7653 Merom
42W7875 Penryn 42W7876 Penryn 42W7877 Penryn
Also, review info regarding Middleton BIOS update through the following posts...
http://forum.thinkpads.com/viewtopic.php?f=29&t=103518
http://forum.thinkpads.com/viewtopic.php?f=29&t=103210
http://forum.thinkpads.com/viewtopic.php?f=29&t=101608
http://forum.thinkpads.com/viewtopic.php?f=29&t=101664