850w for crossfire r9 390 and OC i5 4690k 4.3 ghz?

[kaden golda]

getting EVGA 850w 80+ gold G2 fully modular and im considering getting a second r9 390 later on when it isnt enough for 144hz.

 

[rcald2000]

No, it is not. The recommended minimum system power supply for two R9 390's in CF is 1,000 watts.

*** power requirements for graphics cards ***
http://www.realhardtechx.com/index_archivos/Page362.htm

EVGA 120-G2-1000-XR 80 PLUS GOLD 1000 W 10 yr Warranty Fully Modular
$129.99 after $30.00 rebate card
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438010&cm_re=evga_g2_1000-_-17-438-010-_-Product

EVGA 120-G2-1300-XR 80 PLUS GOLD 1300 W 10 yr Warranty Fully Modular
$159.99 after $40.00 rebate card
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438011&cm_re=evga_g2_1000-_-17-438-010-_-Product

 

[XiPH3R]

getting EVGA 850w 80+ gold G2 fully modular and im considering getting a second r9 390 later on when it isnt enough for 144hz.

850 watts is enough for a 390 crossfire.
here is one guy who used 2 r9 290x cf in a 850 watts psu. he seems totally satisfied :http://www.hardwareheaven.com/community/threads/corsair-rm850-my-experience.227935/

 

[17seconds]

Here is Guru3D's power supply recommendation:

AMD R9 390 and 390X - On your average system the card requires you to have a 550~600 Watt power supply unit.
AMD R9 390 and 390X Crossfire - On your average system the cards require you to have a 800 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
http://www.guru3d.com/articles_pages/powercolor_radeon_r9_390_pcs_8gb_review,8.html