How does SLI work?

[Fixadent]

How does SLI work?

Someone said that it improves performance by taking turns with the other GPU(s) it's connected to rendering each frame.

 

[ss202sl]

They each draw half the frame.
https://en.wikipedia.org/wiki/Scalable_Link_Interface

 

[c4s2k3]

That's a fair explanation. Most of the time Alternate Frame Rendering (AFR) is used, which is what you described. You can read up some more on the links on the left side of this page from NVIDIA:
http://www.geforce.com/hardware/technology/sli

 

[Hlsgsz]

Here: [strike]https://www.youtube.com/watch?v=cxc6cb3_y0w[/strike]

EDIT: Sorry, wrong video.
This one explains both the basics and the future of the technology, albeit with a bit too much info on the latter.
https://www.youtube.com/watch?v=A91BPapLK38

 

[iamacow]

I typed "How does SLI work" First thing on google is Nvidia FAQ on how it works lol http://www.geforce.com/hardware/technology/sli/faq

 

[Hlsgsz]

I typed "How does SLI work" First thing on google is Nvidia FAQ on how it works lol http://www.geforce.com/hardware/technology/sli/faq

You know there's a site for these kinds of remarks, right?