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Asus’ and Acer’s new PG27UQ and X27 4K 144Hz monitors have been criticized for being expensive, loud, and power hungry. Now, r/hardware is warning prospective buyers of another deficiency: chroma subsampling (4:2:2) is reportedly in play when the monitors are running at 144Hz, which means a softer, blurrier image. Ideally, any display for desktop use should support full, non-subsampled resolution (RGB/4:4:4).
Chroma subsampling reduces image quality. Since chroma subsampling is, in effect, a partial reduction in resolution, its effects are in line with what you might expect from that. Most notably, fine text can be affected significantly, so chroma subsampling is generally considered unacceptable for desktop use. Hence, it is practically never used for computers; many monitors don't even support chroma subsampling.
Chroma subsampling reduces image quality. Since chroma subsampling is, in effect, a partial reduction in resolution, its effects are in line with what you might expect from that. Most notably, fine text can be affected significantly, so chroma subsampling is generally considered unacceptable for desktop use. Hence, it is practically never used for computers; many monitors don't even support chroma subsampling.