ASUS VG278Q vs LG C9 55SM9X

ASUS VG278Q
ASUS VG278Q
LG C9 55SM9X
LG C9 55SM9X

Verdict: The LG C9 55SM9X wins on picture quality, offering true blacks and 4K HDR10+ (RTINGS) that the ASUS VG278Q cannot match, and its 120 Hz OLED panel provides smoother motion for movies (per Tom's Hardware). However, the VG278Q’s 144 Hz refresh and sub‑4 ms input lag make it a better choice for competitive gamers who don’t need 4K resolution (RTINGS). Overall, C9 is the superior home‑theater option, while VG278Q remains the budget‑friendly gaming monitor.

Winner: LG C9 55SM9X

ASUS VG278Q: 6.5/10

LG C9 55SM9X: 8.5/10

Spec-by-spec comparison

ASUS VG278QLG C9 55SM9X
Screen Size27"55"
Resolution1920x10803840x2160
Refresh Rate144Hz120Hz
Panel TypeIPSOLED

ASUS VG278Q

What works

  • 144Hz high refresh rate (per Tom's Hardware)
  • Low input lag ~4ms (per RTINGS)
  • Ergonomic stand with tilt and swivel

What doesn't

  • Only 1080p resolution limits detail

LG C9 55SM9X

What works

  • True blacks with OLED panel (per RTINGS)
  • 4K resolution with HDR10+ support (per RTINGS)

What doesn't

  • Potential burn‑in with static UI elements

Bottom line

Our pick: LG C9 55SM9X.

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