Crossfire bridge connector question

[kmufc77]

hi i have 4890s in xfire using 2 crossfire bridges,im led to believe that i only need 1 bridge connector, as using 2 can cause graphic glitches is this correct?

 

[ViRuS2k]

you can use 2 or 1.

 

[[timko]]

Using two shouldn't cause glitches but you only need one when you're crossfiring two cards.