A branded 400 watt should be more than enough... Now I see you have an excellent CPU, in case you want to buy a better GPU, spend 10-15$ more and get a branded 500 watt with 2 PCI-E 6+2 connectors (at the moment you need only 1).
A branded 400 watt should be more than enough... Now I see you have an excellent CPU, in case you want to buy a better GPU, spend 10-15$ more and get a branded 500 watt with 2 PCI-E 6+2 connectors (at the moment you need only 1).