celeron m

Interestingly, I could not find model L40-139 listed on the Toshiba web site.

The models I did look up did not have any CPU upgrade options listed.

The Celeron M processors I looked at all used micro socket 478. The FSB was 533 or 400 MHz which will also limit options.

Some Celeron CPUs come in a ball grid array package. This implies that they are soldered to the mainboard and not socketed.

Chas

http://download.intel.com/design/mobile/SPECUPDT/317667.pdf

and this is Intel's Processor Identifier Software download site

http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=1881&lang=eng

According to Intel at least it has a Micro FCPGA and this has no information at all in relation to the CPU listed and every listing of this CPU is in relation to the Intel 965 Chip Set M'Board you can look for yourself here

http://processorfinder.intel.com/details.aspx?sSpec=SL9WN

I'm unsure but the only time I have seen specifications like this is when the CPU was Soldered onto the M'Board and was not a interchangeable part. But as I say I'm unsure on this one.

Col