7850 OC Video Card work with a Energon 550W psu?

550W is enough.

Easily enough...

If you had posted the rest of you system specs we could tell you more. For example what cpu you have and how much amps on 12v rail for PSU. If it has a dual 12v rail it will do just fine.

ample i have 7870 with 550w oh but it has to be good as he said above but you should be fine

I got the Intel i3 2120 @ 3.30 GHz. 2 HDD one is 500gb and the other is 350gb . no dvd rom and gonna buy a 90 or 120 SSD .

did i miss anything ?

Oh and the rail thing on the psu, i did some research and from where i purchased it they mentioned this :

Rail: Quad rail (18A/18A/18A/18A)

And the Energon site mentioned this :

With 4 x Molex, 4 x SATA and 1 x PCI-E 6 pin power supply is equipped for modern systems optimally.

The 4 x 12V rails provide optimum distribution of 12V power to all connected devices.

Im not that good with psu's but i think it's good right ?