If you use a TV as a PC monitor for Windows, browser work, documents or desktop gaming, start with RGB or YCbCr 4:4:4. Either can be correct if small text is sharp, black levels are not washed out, whites are not crushed, and HDR, 4K and high refresh still work.

For movies, Smart TV apps and consoles, Auto or normal YCbCr is often fine. Do not chase 4:4:4 if it causes flicker, disables HDR or drops the refresh rate you actually need.

Quick Choice

  • PC desktop, browser, documents and small text: try RGB Full or YCbCr 4:4:4 first because text edges need full color detail.
  • PC gaming on a TV: use RGB Full or YCbCr 4:4:4 if the TV accepts it at the resolution and refresh rate you want; HUDs and desktop overlays stay clearer.
  • Console, films and streaming: Auto or normal YCbCr is usually fine because stable HDR and refresh matter more than chasing 4:4:4.
  • 4K/120Hz or HDR fails: try Auto, YCbCr 4:2:2 or YCbCr 4:2:0 as a compromise; HDMI bandwidth can limit full signals.
  • Black looks gray or shadows disappear: match Full/Limited range on the source and TV before blaming RGB or YCbCr.

What The Names Mean

RGB sends red, green and blue channels. It is the clean default for PC desktops and text.

YCbCr 4:4:4 separates brightness from color but keeps full color detail. For text clarity, it can be about as useful as RGB when the TV handles it correctly.

YCbCr 4:2:2 and YCbCr 4:2:0 reduce color detail to save bandwidth. They can look fine in video, but small colored text and UI edges may become fuzzy.

Full/Limited is a separate range setting. If the source sends Full but the TV expects Limited, or the other way around, black and white levels will look wrong.

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How To Test It

  1. Use the correct HDMI input and enable the TV’s PC/Game/Enhanced HDMI mode if available.
  2. On a PC, try RGB Full at your target resolution and refresh rate.
  3. Open small colored text or a chroma 4:4:4 test pattern.
  4. If text is sharp and HDR/refresh work, keep the setting.
  5. If RGB gives wrong levels or is unstable, try YCbCr 4:4:4.
  6. If only YCbCr 4:2:2 or 4:2:0 allows 4K/120 or HDR, decide based on use: acceptable for video and couch gaming, weaker for desktop text.

When Not To Change Anything

Leave the setting alone if the image already looks correct, text is readable, HDR works, and the TV accepts the resolution and refresh rate you want. RGB/YCbCr switching will not fix every problem: poor HDR tone mapping, wireless display lag, upscaling blur or a bad picture preset may need different checks.

Useful references:

  • RTINGS chroma subsampling explainer
  • RTINGS TV supported-resolution and chroma 4:4:4 tests
  • HDMI signal limits depend on the TV input, cable, source device, refresh rate and bit depth

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