Radeon R9 390 xfx power demand?

[jesse.steneker]

I recently bought a Radeon R9 390 xfx and I encountered a question, and I cannot find the answer anywhere. I have a 450W power supply, is that enough to run the graphics card + the rest of the PC itself?

 

[Dragos Manea]

And the rest of the pc? We supose to guess the cpu consumption? Provide the rest of the build.

 

[Vic 40]

And which 450watt psu? Means maker+model