For running two 4870's, how many Crossfire bridges needed?

[jack54]

Sounds like a stupid question, but I want to be sure.

I see lots of photos of two 4870's in Crossfire linked with 2 crossfire bridges?
Yet they only send one with the Asus Dark Knight 4870 I got?
Common sense tells me one should work and the second one would be for linking 3 of them?

Soooo... some feedback?

 

[kylecates]

I'm pretty sure you need two. They send one with each card, so if you buy two, you'll have the two you need. You only need 2 for Tri-crossfire though. Not sure why.

 

[jack54]

I'm pretty sure you need two. They send one with each card, so if you buy two, you'll have the two you need. You only need 2 for Tri-crossfire though. Not sure why.

uh... what about this
http://www.tomshardware.com/forum/253799-33-crossfire-bridge

http://forums.extremeoverclocking.com/t303302.html

 

[romulus47plus1]

You only need one for two cards. You can put two, but makes no difference.

 

[jack54]

You only need one for two cards. You can put two, but makes no difference.

thanks for the reply.
Wonder why you see so many pictures with two of them on? Looks maybe if it isn't for a performance gain?

 

[romulus47plus1]

we had this conversation a year ago.

http://www.tomshardware.com/forum/251878-33-crossfire-bridges

maybe they might add another card in the future, and they know where the bridges are...

PS: opps, u posted the link already.