Whats the best 2 way SLI bridge for the 1080 on the market currently?

Solution
Here is a good review that tests SLI bridges, hope this helps you
http://www.hardwareunboxed.com/nvidias-hb-sli-bridge-surprising-gains-gtx-1080-sli-testing-inside/

Math Geek

Titan
Ambassador
not that i have seen. some reviews have been done on the new double bandwidth one nvidia put out with the new cards but it did not perform any better than older sli bridges that came with 900 series cards. you can use an old one you may already have or buy one of the new nvidia ones that cost $40 i believe it is.

http://www.geforce.com/hardware/10series/geforce-gtx-1080 select the sli link at the top and it goes to their new sli bridge
 

iamacow

Admirable
Here...

"Some users have been reporting performance gains when using two single bridges with their 1080 SLI setup. To my knowledge this caused issues with the Maxwell based cards but I decided to give it a shot after completing all the testing previously. To my surprise with two flex connectors installed I received the exact same boosts in The Witcher 3, Division and Fallout 4 as I did with the high bandwidth bridge. So it seems if you have two legacy connectors you don’t actually need a high bandwidth bridge."

Basically the HB Bridges are just two normal SLI connectors. I figured that for a while but never found any proof.

There is no "rating" per say, just if you have 1000 series in SLI you will benefit from the HB Bridge or using two "legacy connectors"

It also seem unless you are playing at 4k, it will no zero improvement over the old single connector.