ASUS ProArt PA278QV vs LG C9 55SM9X

By Billy G. · Founder & Lead EditorVerified Sep 14 by Billy G.

ASUS ProArt PA278QV
ASUS ProArt PA278QV
LG C9 55SM9X
LG C9 55SM9X

Verdict: The ASUS ProArt PA278QV outperforms the LG C9 55SM9X for color‑critical desktop work, offering factory‑calibrated 100% sRGB coverage and an ergonomic stand (RTINGS, Tom's Hardware). The LG C9 shines in a living‑room setting with true‑black OLED contrast and HDR10+/Dolby Vision support (RTINGS, AnandTech). For users prioritising professional editing, the monitor is the clear winner; for cinematic home viewing, the TV remains compelling.

Winner: ASUS ProArt PA278QV

ASUS ProArt PA278QV: 7.5/10

LG C9 55SM9X: 7/10

Spec-by-spec comparison

ASUS ProArt PA278QVLG C9 55SM9X
Screen Size27" IPS panel55" OLED panel
Resolution3840 x 21603840 x 2160
Refresh Rate60Hz120 Hz
Color GamutBlack—
HDR—HDR10+, Dolby Vision

ASUS ProArt PA278QV

What works

  • Factory calibrated for color accuracy (per RTINGS)
  • Ergonomic stand with tilt, swivel, pivot (per Tom's Hardware)
  • Wide color gamut suitable for photo/video work (per PCMag)

What doesn't

  • Limited refresh rate for gaming (per Notebookcheck)
  • No HDR support (per RTINGS)

LG C9 55SM9X

What works

  • True blacks and infinite contrast (per RTINGS)
  • Excellent HDR performance (per AnandTech)
  • Smart TV platform with webOS (per CNET)

What doesn't

  • Potential burn‑in risk over long static content (per Consumer Reports)
  • Peak brightness lower than high‑end LED TVs (per Tom's Hardware)

Bottom line

Our pick: ASUS ProArt PA278QV.

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