Rom revision
I believe the difference is in the processors. Mbp3.1 merom(3175) and mbp4.1 penryn(3212).
So if your MBP was just recently returned, and a "new" logic board installed with ROM version 3175, how come my 2.4 MBP 4.1 (early-08) bought back in Nov 08 has ROM version 3212?
Why didn't Apple install a Logic board with the later ROM revision ? or am I missing something
I believe the difference is in the processors. Mbp3.1 merom(3175) and mbp4.1 penryn(3212).