According to the manufacturer specs, your board does support 125w CPU's. You're fine running the Phenom II 955 on that board. However, overclocking is definitely not recommended on that board. You're only overclocking it by 200MHz. You might be okay for a while but in my experience cheaper motherboards eventually die even with mild overclocks. I had a cheap Biostar motherboard running a dual core Athlon CPU and after a couple of years with a 200MHz overclock the capacitors went bad and the system became unstable. If I were you I'd run it at stock or try to get a new motherboard.