Skip to content
Specdex
Compare now
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 G4 OLED 77" wins by 4
LG G4 OLED 77" — MLA OLED · 77" · 2024
LG

LG G4 OLED 77"

MLA OLED · 77" · 2024

96
/ 100
From $4,949
Specdex verdict

LG G4 OLED 77" takes it — here’s why.

In our weighted Specdex score, TCL QM851G 75" lands at 92 and LG G4 OLED 77" at 96. That puts LG G4 OLED 77" ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.

Pick TCL QM851G 75" if…

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

Pick LG G4 OLED 77" if…

  • ✓Strong HDR performance
  • ✓Current smart platform
  • ✓HDMI 2.1 on most HDMI ports
Share this comparison: Share to Reddit X / Twitter

Winner by scenario

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

Picture quality

LG G4 OLED 77"

Panel, processing, and HDR performance

LG G4 OLED 77" leads on picture (96 vs 93).

Gaming

Tie

Input lag, VRR, 120 Hz support

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

Smart platform

Tie

OS speed, app support, ecosystem

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

Value for money

TCL QM851G 75"

Specdex score per dollar at MSRP

TCL QM851G 75" more score per dollar ($2,499 vs $4,949).

TCL QM851G 75" 92
vs
96 LG G4 OLED 77"

Score breakdown

TCL QM851G 75"
92
picture 93
motion 90
gaming 94
smart 82
sound 86
LG G4 OLED 77"
96
picture 96
motion 94
gaming 92
smart 82
sound 78

Specs side-by-side

TCL QM851G 75" versus LG G4 OLED 77" — full spec comparison
Spec TCL QM851G 75" LG G4 OLED 77"
Panel
Mini-LED
MLA OLED
Size
75″
77"
Refresh
▲ 144Hz
120Hz
HDR
Dolby Vision IQ + HDR10+
—
Release year
—
2024

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 G4 OLED 77"

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 G4 OLED 77"

Which is better, TCL QM851G 75" or LG G4 OLED 77"? +

LG G4 OLED 77" scores 96 on our weighted rubric — ahead by 4. 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 G4 OLED 77" worth the price? +

At $4,949, LG G4 OLED 77" delivers a Specdex score of 96 — strongest in picture.

Does TCL QM851G 75" or LG G4 OLED 77" 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 picture quality, TCL QM851G 75" or LG G4 OLED 77"? +

LG G4 OLED 77" — leads on picture (96 vs 93). Panel, processing, and HDR performance.

Which is the better value, TCL QM851G 75" or LG G4 OLED 77"? +

TCL QM851G 75" — more score per dollar ($2,499 vs $4,949). Specdex score per dollar at MSRP.