What is 6G-SDI?

What is 6G-SDI? | wolfcrow:
If what you’re shooting is limited to 1080p60 at the highest quality, you don’t need anything better than 3G-SDI. In fact, unless you are designing a live broadcast switching environment, you don’t even have to worry about what standard you’re working with because the camera manufacturer has thought it out for you.
With 4K, you are probably expecting to follow that trend. To this affect, many devices have been announced (some are even available) that support a standard called 6G-SDI.

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4K Video Over 6G-SDI Connections

High Definition for PC » 4K Video Over 6G-SDI Connections:
We began seeing the first products supporting 6G SDI announced at NAB this year.  I heard this was coming, but didn’t fully grasp the significance of it until looking around the show floor.  Hardly anyone is using dual-link 3G connections, presumably for 1080p60 in full RGB, and basically all 4K work is done in RGB, so going from four cables to two isn’t that helpful.  But broadcast applications with QuadHD frame-sizes is where this new technology is going to be key.

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