These are old Standered beep codes.
Motherboard supports the following processor upgrades:
Processor
FX-4100 (Zambezi)
FX-6100 (Zambezi)
FX-6120 (Zambezi)
FX-6200 (Zambezi)
FX-8100 (Zambezi)
FX-8120 (Zambezi)
FX-8150 (Zambezi)
All of the Above with Stock Bios.
FX-83XX, FX-63XX (Zambezi) "with Bios update"
I doubt your old CPU is bad, and I don't know what your current Bios version is so I can't say they New CPU will work but it is possible the MB or PSU has gone south on you. The beep codes don't match the issue, 6 beeps normally is a bad.