Thinkpads Forum

I have T30's A31's and A31p's R40's and 1 R51, are the Pentium 4's installed all interchangeable? They are all 400fsb and run the PC2100 RAM.
Can anyone provide a link to Intel with the chip model number?

Thanks
Ron

No, unfortunately not all compatible. The T30 and A31's use Pentium 4M CPU's, the others use Pentium M CPU's.
http://en.wikipedia.org/wiki/List_of_In ... processors

You should be able to find a similar link on Wikipedia for Pentium 4M's.