Mites tämä eroaa HDMI 2.1 tukemaata VRR:stä?
Ei käytännössä mitenkään. Joitakin vaadittuja/tuettuja hertsieroja voi olla, jotta voi saada tietyn leiman.
Tässä reddid -käyttäjän kokoama historia:
www.reddit.com
Basic timeline over past decade
1 - Vesa (PC monitor standards group) creates adaptive sync tech.
2 - Nvidia creates their own in-house solution not based of Vesa adaptive sync and call it G-Sync which requires a dedicated hardware module in G-Sync displays.
3 - AMD implement adaptive sync as Freesync over Vesa Displayport no special hardware required.
4 - AMD creates its own clone of adaptive sync for Freesync over HDMI as Vesa does not control HDMI.
5 - The HDMI Forum (group who controls HDMI) clone adaptive sync and call it HDMI Variable Refresh Rate for HDMI 2.1
6 - Nvidia implement support for Vesa Adaptive Sync and HDMI Forum VRR as G-Sync compatible on GTX-16xx and RTX-2xxx cards.
So HDMI-VRR is a clone of adaptive sync (aka Freesync), what set's it apart is
- Support for VRR+HDR is mandatory.
- Maximum range of HDMI-VRR is 120Hz.
- Support for LFC (low frame rate compensation) is optional.
It's functionally closest to the
Freesync Premium Pro tier but it lacks mandatory LFC support so it's kinda between the Premium and Pro feature list.