Conclusion
Blacks are inky, viewing angles are good and the contrast is excellent. And the huge screen real estate makes it a fine choice for general productivity and colour-accurate work.iiyama goes after monitors in a big way, quite literally, with the 40in X4071UHSU. Equipped with a 4K panel, the sheer size is a good fit for the 3,840x2,160 resolution, with Windows 10 scaling working well enough.
Blacks are inky, viewing angles are good and the contrast is excellent. And the huge screen real estate makes it a fine choice for general productivity and colour-accurate work.
Heck, playing games is also enjoyable thanks to a more than reasonable input lag and massive screen... as long as your graphics card can drive the 4K requirement. And that little remote is rather handy, too.
All fantastic then? There are some foibles, notably a lack of adjustment on the fixed-position feet and some darkening in the right-hand corner. If you can live with that, this is a good monitor for big-screen spills and thrills.
Good black-level performance
Impressive Delta-E once calibrated Solid value at £450
Handy remote control
Luminance uniformity not great
iiyama ProLite X4071UHSU-B1
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The iiyama ProLite X4071UHSU-B1 monitor is available to purchase from Scan Computers.
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