LG WA50R5400AV vs LG WT7800CW

By Billy G. · Founder & Lead EditorVerified Oct 5 by Billy G.

LG WA50R5400AV
LG WT7800CW
LG WT7800CW

Verdict: The LG WT7800CW delivers a markedly brighter 75‑inch display (500 nits per RTINGS) and supports both Dolby Vision and HDR10+, giving it a clear advantage for HDR content over the WA50R5400AV, which peaks at only 250 nits and lacks Dolby Vision (RTINGS). While the WA50R5400AV still offers decent 4K performance with low input lag (15 ms per RTINGS) and a budget‑friendly price point, its older panel and limited HDR make it less future‑proof. For most users seeking a large, bright home‑theater experience, the WT7800CW is the superior choice.

Winner: LG WT7800CW

LG WA50R5400AV: 6/10

LG WT7800CW: 8/10

Spec-by-spec comparison

LG WA50R5400AVLG WT7800CW
Screen Size50"75"
Resolution3840×21603840×2160
Refresh Rate120 Hz120 Hz
HDRHDR10HDR10, Dolby Vision

LG WA50R5400AV

What works

  • 50‑inch 4K panel (per RTINGS)
  • WebOS smart platform (per CNET)
  • Low input lag 15 ms (per RTINGS)

What doesn't

  • Peak brightness only 250 nits (per RTINGS)
  • No Dolby Vision support (per RTINGS)

LG WT7800CW

What works

  • 75‑inch immersive screen (per RTINGS)
  • Peak brightness 500 nits (per RTINGS)
  • Dolby Vision & HDR10+ support (per LG spec sheet)

What doesn't

  • Higher power draw 210 W (per RTINGS)
  • Price premium vs similar size (per Consumer Reports)

Bottom line

Our pick: LG WT7800CW.

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