Would be a Seasonic platinum/X 860w or Corsair AX 860w sufficient for my system?

[Carlo Vargas]

Amd FX 8350@ 4.7 ghz -4.8ghz
Sabertooth 990fx r2.0
Crossfire Sapphire r9 280x Dual-x OC edition
corsair h80 liquid cpu cooler
4x4 ripjaw ram
2xtb HDD
2x500gig HDD
nxzt led hue controller
cooler master enforcer with 2x 120mm CM led fan

 

[Darkbreeze]

Any Tier 2B or higher 650w or higher unit would be plenty. Which that is.

 

[Carlo Vargas]

Any Tier 2B or higher 650w or higher unit would be plenty. Which that is.

how is that sir?
im using crossfire r9 280x dual x OCed

 

[Darkbreeze]

My bad. I didn't see the crossfire in the specs. So 750w with a top end unit would be good, 850 is definitely fine even if you overclock them a bit.

http://www.tomshardware.com/answers/id-2270590/psu-280x-crossfire-build.html