I have two motherboards 1 microstar ms-6191 that I am runnning a amd athlon thunderbird 750 slot a processor ....the other board is a power color pvk7 with a athlon classic 650 slot a processor....question is this the pvk7 will support both the thunderbird and the classic processor but I cannot find any information as to why the microstar board will only run using the thunderbird chip....why can I not switch these two processors in this board....help.....