What is the minimum Power Supply necessary?

[LeitMotif]

CPU: i5 3570K
GPU:Sapphire Radeon HD 7850 2GB
RAM:Mushkin Enhanced 8GB RAM
Hard Drive: 2TB WD Black

I MIGHT choose to get a second 7850, for crossfire. And, any recommended companies will be appreciated.

 

[Novuake]

650w??!??!! LOL your kidding right... I run 2 HD7950s on a 650. Albeight a very good 650. But still.

Get a reliable 550 if you plan to OC.

 

[Novuake]

650w??!??!! LOL your kidding right... I run 2 HD7950s on a 650. Albeight a very good 650. But still.

Get a reliable 550 if you plan to OC.

let's see believe a professional review site or the village idiot...not that is funny...i think I will laugh at that

Radeon HD 7850 - On your average system the card requires you to have a 500 Watt power supply unit and 650 Watt if you go with two cards in Crossfire mode.

http://www.guru3d.com/articles_pages/amd_radeon_hd_7850_and_7870_review,7.html

UNLESS you get a very good 550W... 650W is a safety margin. But whatever.

I would not Xfire HD7850...

 

[LeitMotif]

650w??!??!! LOL your kidding right... I run 2 HD7950s on a 650. Albeight a very good 650. But still.

Get a reliable 550 if you plan to OC.

I was almost going to choose the other guy as best answer. Can you specifically name any "very good" 550W power supplies?

 

[Novuake]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

OK so I can not seem to find a well price very good 550W PSU anyway. BUT the above 650W is only 79$ after rebate, which is cheaper than most 550W PSUs anyway.

I run 2 hd7950s on that EXACT PSU.

 

[Dark Lord of Tech]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013

XFX 550W < Made by Seasonic < $69.00 after rebate

 

[LeitMotif]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

OK so I can not seem to find a well price very good 550W PSU anyway. BUT the above 650W is only 79$ after rebate, which is cheaper than most 550W PSUs anyway.

I run 2 hd7950s on that EXACT PSU.

Hopefully the rebate works, thanks.

 

[Novuake]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013

XFX 550W < Made by Seasonic < $69.00 after rebate

A very good option too.