Is 550w GOLD PSU enough for Gigabayte R9 390?

[brofromcro]

So I will buy r9 390 and i did some calculations and i think i should be fine but i want to make sure... so yeah what do you think i have :I7 4790K 4.6Ghz and Seasonic G 550W GOLD PSU. Thanks!!

 

[DonkeyOatie]

550W is just enough for a 275W TDP GPU and a CPU which when overclocked, can exceed 100 W. I like to have my load at about 70% of my PSU power, and 70% of 550 is 385. Seasonic makes a great PSU that will do what it says and I believe that it has enough on the 12V rails for this.

 

[nikoli707]

plenty