Acer Predator XB271HK 27" 4K2K IPS

[muon]

Anyone know what the Freesync equivalent would be. I want to be certain before I lock myself into G-Sync that this is the best choice for me.

For comparisons assume I can get the mentioned monitor for £550.

I prefer resolution over refresh rates.

Thanks.

 

[muon]

Acer H277HK 27" IPS is the AMD equivalent?