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TCL QM851G 75" — Mini-LED · 5000 nits peak · 144Hz
TCL

TCL QM851G 75"

Mini-LED · 5000 nits peak · 144Hz

92
/ 100
From $2,499
VS
LG C3 OLED 55" — OLED evo · 55" · 2023
LG

LG C3 OLED 55"

OLED evo · 55" · 2023

92
/ 100
From $2,499
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, TCL QM851G 75" lands at 92 and LG C3 OLED 55" at 92. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick TCL QM851G 75" if…

  • ✓Blinding 5000-nit peak
  • ✓ZeroBorder design
  • ✓Bang Olufsen tuned audio

Pick LG C3 OLED 55" if…

  • ✓Strong HDR performance
  • ✓Current smart platform
  • ✓HDMI 2.1 on most HDMI ports
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Picture quality

Tie

Panel, processing, and HDR performance

Effectively tied — neither pulls a 2-point weighted lead.

Gaming

TCL QM851G 75"

Input lag, VRR, 120 Hz support

TCL QM851G 75" leads on gaming (94 vs 88).

Smart platform

Tie

OS speed, app support, ecosystem

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

TCL QM851G 75" 92
vs
92 LG C3 OLED 55"

Score breakdown

TCL QM851G 75"
92
picture 93
motion 90
gaming 94
smart 82
sound 86
LG C3 OLED 55"
92
picture 92
motion 90
gaming 88
smart 82
sound 78

Specs side-by-side

TCL QM851G 75" versus LG C3 OLED 55" — full spec comparison
Spec TCL QM851G 75" LG C3 OLED 55"
Panel
Mini-LED
OLED evo
Size
75″
55"
Refresh
▲ 144Hz
120Hz
HDR
Dolby Vision IQ + HDR10+
—
Release year
—
2023

TCL QM851G 75"

Pros
  • +Blinding 5000-nit peak
  • +ZeroBorder design
  • +Bang Olufsen tuned audio
Cons
  • −Google TV ads
  • −Blooming in dark scenes
  • −Local-dimming tuning varies

LG C3 OLED 55"

Pros
  • +Strong HDR performance
  • +Current smart platform
  • +HDMI 2.1 on most HDMI ports
Cons
  • −Ads on smart platform
  • −Sound trails dedicated audio
  • −Large footprint

FAQ: TCL QM851G 75" vs LG C3 OLED 55"

Which is better, TCL QM851G 75" or LG C3 OLED 55"? +

Both score 92 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is TCL QM851G 75" worth the price? +

At $2,499, TCL QM851G 75" delivers a Specdex score of 92 — strongest in gaming.

Is LG C3 OLED 55" worth the price? +

At $2,499, LG C3 OLED 55" delivers a Specdex score of 92 — strongest in picture.

Does TCL QM851G 75" or LG C3 OLED 55" last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for gaming, TCL QM851G 75" or LG C3 OLED 55"? +

TCL QM851G 75" — leads on gaming (94 vs 88). Input lag, VRR, 120 Hz support.