The Valve Index, for example, can currently go all the way up to 144Hz, while the Oculus Rift S is limited to 80Hz. The HTC Vive Cosmos headsets, on the other hand, can do up to 90Hz, and if you want to play Half-Life: Alyx on the Oculus Quest via Oculus' Link software, then you'll have to make do with a 72Hz refresh rate.
Half-Life: Alyx. This must be played using Air-Link with Quest 2. I tried cable at first, but then I stumbled upon the fact that Oculus now has released Air-Link as a new way of connecting to the computer. It requires a strong Wifi connection of course, but it's so worth it.
CpZpOr6.