While compatible on paper the 125w FX CPUs are problematic on motherboard like the one your friend has. VRM throttling is a common problem on such boards due to a small 4 phase VRM setup and lack of VRM cooling. I wouldn't suggest anything above 95w FX on such a board(8320e or 8370e).
What cpu does your friend have now as it may not be worth the time and money to invest in that platform.