in theory yes it should, it will all depend on the microcode in the BIOS in the board, adn also the difference in the microcode between the two CPUs. I can't really find much information about your board, so maybe you could contact toshiba, but i think they are a bit funny with CPU upgrades, or used to be anyways. Or you could just try it and see. the other thing is...is there really muhc point?there aint gona be much notable differenece if any...
hope this helps.