Will an 800 watt PSU be sufficient for two r9 280x's (Toxic Edition) in Crossfire?

[RollTide615]

I currently have a Corsair GS-800W PSU and was wondering if that would be sufficient enough to
power 2 of these behemoths in Crossfire (Sapphire R9 280x Toxic Edition)

Card: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202044

PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139047

My current setup is:
AMD FX-8350 (with cooler master hyper 212+ cooler)
1TB WD Blue HDD
(2x) Gigabyte 7870's Ghz Edition (Crossfired)
Case has 3 fans total (2 200mm and 1 120mm)

Just wondering if with my current setup i'd have enough juice to power it all

 

[John Bauer]

Yes.

 

[RollTide615]

Yes.

Care to elaborate further? I wanna be 100% certain before I plop down $700 for the cards. Of course upgrading the PSU is not out of the question if you think it's necessary

 

[John Bauer]

Yes.

Care to elaborate further? I wanna be 100% certain before I plop down $700 for the cards. Of course upgrading the PSU is not out of the question if you think it's necessary

An 800W PSU could handle 2 GTX Titans with your 8350.

 

[mace200200]

Second, a single 7870 is going to pull something like 150w, the r280s are the same boards with different clocks.

 

[RollTide615]

Yes.

Care to elaborate further? I wanna be 100% certain before I plop down $700 for the cards. Of course upgrading the PSU is not out of the question if you think it's necessary

An 800W PSU could handle 2 GTX Titans with your 8350.

Second, a single 7870 is going to pull something like 150w, the r280s are the same boards with different clocks.

Well I've heard that the Toxic edition requires more power (it requires two 8-pin power connectors) Do you forsee this giving me any trouble in the future?

Here's a link to the PSU I currently have if that helps : http://www.newegg.com/Product/Product.aspx?Item=N82E16817139047

 

[mace200200]

Oh its a 280x, that's the equivalent of the 7970 which does take more power. You'll still be alright, at load a system with two 7970 GHz pulls about 700ws

 

[Kamen_BG]

If you're going for two overclocked 280X's do not overclock your CPU or at least do not add any additional voltage.
Overclocking the FX 8350 can inscrease your PC's power consumption by as much as 150 watts.

 

[cederwood]

the cards max. use 600 watts, since they are both double 6+2 pin= both max. 300w, so aslong as you dont do any massive oc, you will be just fine