How many bridges needed in crossfire? 1 or 2

[kanzaz]

i would also like to no if im using a high enough wattage of psu.
AMD FX-8120 Octa-Core Processor/8GB DDR3 ram/2 hd radeon 6770
/OCZ ModXStream Pro 700W Modular High Performance Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom/Motherboard: Biostar TA990FXE.? thanks in advance.

 

[treefrog07]

Crossfire requires one bridge (between the 2 cards); there are 2 sets of bridge connectors on AMD GPUs to allow tri-fire. Your power supply is more than adequate.

 

[HugoStiglitz]

Some cards require 2x connections.

both my 5870 & friends 5830's both need 2 crossfire bridge cables in order to enable Xfire.

if both cards have 2x CFX connectors you will need 2 cables.

 

[PaperBoy]

2 way CF = 1 bridge

3 way CF = 2 bridge

4 way CF = 3 bridge

Same goes for SLI

 

[jasont78]

Some cards require 2x connections.

both my 5870 & friends 5830's both need 2 crossfire bridge cables in order to enable Xfire.

if both cards have 2x CFX connectors you will need 2 cables.

wrong 1 for 2 way crossfire the extra connecters are if you want to connect 3 plus cards
been there, done that, wont do that again!

 

[esrever]

you only need 1 but putting 2 does hurt either.

 

[kanzaz]

thanks alot that sums it up greatly.

 

[kanzaz]

Best answer selected by kanzaz.

 

[bystander]

you only need 1 but putting 2 does hurt either.

Most the time, people don't have issues, but sometimes it will cause weird problems. It's best to leave it off.