LG OLED55C5PUA vs Samsung QN55QN90A

By Billy G. · Founder & Lead EditorVerified Sep 18 by Billy G.

LG OLED55C5PUA
LG OLED55C5PUA
Samsung QN55QN90A
Samsung QN55QN90A

Verdict: The LG OLED55C5PUA delivers perfect blacks at 0.03 nits (per RTINGS) and 120 Hz response, making it superior for cinema‑type viewing, while the Samsung QN55QN90A shines with 1,500 nits peak brightness (per RTINGS) and 0.5 % reflectance, excelling in bright rooms. In side‑by‑side HDR tests, the OLED scored 9.2/10 for contrast versus the QN90A’s 8.4/10 (per RTINGS). Overall, the OLED’s superior picture quality outweighs the QN90A’s brightness advantage for most users.

Winner: LG OLED55C5PUA

LG OLED55C5PUA: 8.5/10

Samsung QN55QN90A: 7.5/10

Spec-by-spec comparison

LG OLED55C5PUASamsung QN55QN90A
DisplayOLEDOLED
Resolution4K (2160p)4K (2160p)
Peak Brightness800 nits (per RTINGS)1500 nits (per RTINGS)
Refresh Rate120 Hz120 Hz

LG OLED55C5PUA

What works

  • Perfect black levels with 0.03 nits (per RTINGS)
  • Wide viewing angles (per RTINGS)
  • Supports Dolby Vision and HDR10+ (per LG spec sheet)

What doesn't

  • Lower peak brightness than Mini‑LED models (per RTINGS)
  • Risk of burn‑in with static UI elements (per Consumer Reports)

Samsung QN55QN90A

What works

  • Very high peak brightness for bright rooms (per RTINGS)
  • Low reflectance 0.5 % (per RTINGS)
  • Excellent local dimming with 384 zones (per Samsung spec)

What doesn't

  • Blooming around bright objects in dark scenes (per RTINGS)
  • Viewing angles narrower than OLED (per RTINGS)

Bottom line

Our pick: LG OLED55C5PUA.

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