crossfiring sapphire r290x bf4 edition and and r290x sapphire tri-xx

[macmac194]

I just tried crossfiring r290x bf4 edition and r290x tri-x and it let me crossfire'em when i click 'crossfire enable'. I have 2 questions to ask.

first how would i know if my crossfire is already working? when i go to cpu z and click graphics does it have to indicate that my cards are crossfired already?

second question is im using 2 27 inch monitor. I connected the first monitor using a hdmi cable connect to the first card and the other one same thing hdmi but connected to the other card. But whenever i go and enable my crossfire one monitor always turns off i dont know why..

 

[k1114]

Cpuz will say it's enabled, ccc will say it's enabled, other software will as well and you could even check gpu usage. Both monitors need to be plugged into the first card.