A good quality 550watt should do fine.Looking via the pcpartpicker this one right now, http://pcpartpicker.com/product/nB3RsY/seasonic-power-supply-s12ii620bronze
You can look generally at the new Corsair CXM series (white/black) semi modular ones or the Seasonic S12II/M12II series.The XFX TS series would do fine as well. All reasonable budget psu's.
A good quality 550watt should do fine.Looking via the pcpartpicker this one right now, http://pcpartpicker.com/product/nB3RsY/seasonic-power-supply-s12ii620bronze
You can look generally at the new Corsair CXM series (white/black) semi modular ones or the Seasonic S12II/M12II series.The XFX TS series would do fine as well. All reasonable budget psu's.