4K video wallpapers look incredible on 27-inch iMacs and MacBook Pro Retina panels. MacWall decodes 4K H.264 and HEVC streams on the GPU — the same pipeline used by QuickTime and Final Cut playback.
When 4K makes sense
- Native 4K or 5K displays
- Cinematic nature and space loops
- Desk setups plugged into power
When to use 1440p instead
MacBook Air 13-inch and older Intel Macs may run cooler with 2560×1440 sources. MacWall scales video to fit — pick the resolution that matches your display for best quality-to-performance ratio.