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DF Weekly: HDMI 2.2 delivers up to 16K resolution - but do we actually need it?
More pixels may be surplus to requirements - but 4K at up to 480Hz has value.
On a nuts and bolts level, the higher the refresh rate, the more the typical issues of flat panel displays are diminished, resulting in improved motion clarity. Of course, DisplayPort is typically the PC connection of choice, where the latest 2.1b standard takes us to 80Gbps of bandwidth, but I would expect HDMI 2.2 support to be included too on future displays. It's embedded at the top of this page but please do check it out - we discuss the ongoing controversy surrounding Switch 2's "slow" display - now backed with benchmark data - and we test out Fast Fusion's new "pure" mode that completely removes the contentious DLSS upscaling.
Or read this on Eurogamer