Difference in gPU power?

[iknowreal]

Two Radeon HD 7850 XFX DD Black Edition
vs gtx 970

power difference I remember there use to be a website I could see % of power difference.

 

[Guest]

http://www.hwcompare.com/18059/geforce-gtx-970-vs-radeon-hd-7850/

 

[iknowreal]

Is there away to check two graphics vs 1 graphics card?

 

[nukemaster]

2 cards at full load can take 2 x the power of a single card.

I would guess 200-240 under heavy load for the 2 card setup.