It can depend a bit on the use. I'm watching content (Jellyfin) on a ThinkCentre M75n IoT Thin Client.

It's underpowered all around. Athlon Silver 3050e, 4GB DDR4 (3.4 avail & not upgraeable) but it's running Win11 enterprise IoT 24H2. The device would sometimes throttle the CPU for unknown reasons (not thermal, no throttle flags). Universal x86 Tuning Utility completely fixed that.

The experience is really good up to 1080p videos. It can choke on 4k but it's a bedroom TV; it's fine. Videos on Firefox are no trouble. I'm quite happy with it.