go 850 or 1000w, old amd cards x2 might not be the most power efficient. 750w may work but tight headroom. 750w 12v rail might get overloaded a bit. check for psu teir list for bronze or gold on linus tech tips forum.
Gold and bronze rating is more related to efficiency rather than requirement. Based on calculation, 750 Watts wil be enough. Go for gold rating if you want lesser heat from PSU.
Gold and bronze rating is more related to efficiency rather than requirement. Based on calculation, 750 Watts wil be enough. Go for gold rating if you want lesser heat from PSU.