Yeah i didn't pick up on that one, looks like the new bios update adds the clarkdale support. I would rather keep the p55 if i were you since its a better board, and if you want we can help you through the bios update, its really not that hard. theres a pdf next to the bios update on the biostar site below that shows you how to update it through windows which is very easy
BIOSTAR :: TP55 :: BIOS
all you need to do is download the update file there and the software to update, and follow those steps.