What is the difference between G-sync and G-sync compatible in actual gameplay?

Chris95
Chris95 Member Posts: 1 New User
edited February 2024 in 2020 Archives
I tried to search about this but could not find an answer.

I have an

24" Acer XB241Hbmipr PREDATOR monitor

which comes with G-sync built in and doing it's job perfectly. I am about to buy a second monitor which is:

Acer Predator XB253QGPbmiiprzx

It has not built in G-sync but it is G-sync compatible, so will this work just the same as my current G-sync monitor? Will I see any difference in games when my fps drops below 144hz?
(playing games on 144hz)