AMD FX-8320 Vishera 3.5GHz (4.0GHz Turbo) Socket AM3+ 125W Eight-Core Desktop Processor FD8320FRHKBOX

Solution
do you want to overclock at all? do you want to crossfire/sli video cards? will make a difference.

I have that chip and with good cooling and the right motherboard, I can hit 4.7 ghz overclocked.