Gtx 1060 vs gsync

Solution
G-Sync is **not required**

G-Sync has a significant impact from 30 fps on up ... the impact of that improvement however is harder to recognize the further you get past 60 fps.
FreeSync has a significant impact from 40 fps on up ... the impact of that improvement however is harder to recognize the further you get past 60 fps.

G-Sync allows you to switch to ULMB mode (motion blur reduction) which starts to make sense as an option at about 70 fps. Freesync has no inherent MBR technology. However, you can also utilize MBR technology using toasty strobelight utility

http://www.blurbusters.com/

You can see what monitors support what here:

http://www.blurbusters.com/faq/120hz-monitors/
G-Sync is **not required**

G-Sync has a significant impact from 30 fps on up ... the impact of that improvement however is harder to recognize the further you get past 60 fps.
FreeSync has a significant impact from 40 fps on up ... the impact of that improvement however is harder to recognize the further you get past 60 fps.

G-Sync allows you to switch to ULMB mode (motion blur reduction) which starts to make sense as an option at about 70 fps. Freesync has no inherent MBR technology. However, you can also utilize MBR technology using toasty strobelight utility

http://www.blurbusters.com/

You can see what monitors support what here:

http://www.blurbusters.com/faq/120hz-monitors/
 
Solution
While the GTX-1060 (the gimped 3GB or the fully functional 6GB unit) has G-Sync capability right out of the box, it isn't a required feature of your monitor. G-Sync won't work without it, but the card will still drive your monitor. If you can get 144Hz refresh out of the games you play, as long as your monitor supports 144Hz, you will get 144hz refresh, if not, you'll get the max your monitor supports. G-Sync has nothing to do with this in and of itself. It is just a proprietary adaptive-sync technology meant to cut back on image issues when your card slows down and speeds up in the refresh rates during gaming.