Questions about crossfire

[Nikos K]

For crossfire I must connect the two cards with one or two bridges?
And I must connect one HDMI cable from the first card to the first HDMI slot on Monitor and one from the second card to the second HDMI slot on Monitor or only one HDMI cable?

 

[PizzaTheHutt]

For crossfire on high end AMD cards you don't need a bridge but otherwise you need one bridge. Only one HDMI cable is needed as it will use the GPU processor without needing cables in both of them.

 

[Nikos K]

For two R9 280 do I need a bridge?