Bitfenix Prodigy M PSU

You should get a higher quality power supply for a gaming system. Here's a few good choices-

http://uk.pcpartpicker.com/parts/compare/antec-power-supply-tp550c,evga-power-supply-220g20550y1,seasonic-power-supply-s12ii620bronze,super-flower-power-supply-sf550p14xehx/
 


No, the EVGA 750 B1 is not one of their better models. Look at the list I linked for you. If you list your system details a better recommendation for you can be made to determine your power requirements.