TCL QM851G 77"
Mini-LED · 77" · 2024
LG G5 OLED
MLA OLED · 2300 nits · 144Hz
LG G5 OLED takes it — here’s why.
In our weighted Specdex score, TCL QM851G 77" lands at 92 and LG G5 OLED at 96. That puts LG G5 OLED ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.
Pick TCL QM851G 77" if…
- ✓Strong HDR performance
- ✓Current smart platform
- ✓HDMI 2.1 on most HDMI ports
Pick LG G5 OLED if…
- ✓Brightest OLED ever at 2300 nits
- ✓4× HDMI 2.1 with 144Hz
- ✓Wall-flush gallery design
Winner by scenario
Derived from the sub-score breakdown · not a separate testGaming
LG G5 OLEDInput lag, VRR, 120 Hz support
LG G5 OLED leads on gaming (96 vs 88).
Smart platform
TCL QM851G 77"OS speed, app support, ecosystem
TCL QM851G 77" leads on smart (82 vs 78).
Value for money
LG G5 OLEDSpecdex score per dollar at MSRP
LG G5 OLED more score per dollar ($3,299 vs $3,749).
Score breakdown
Specs side-by-side
| Spec | TCL QM851G 77" | LG G5 OLED |
|---|---|---|
| Panel | Mini-LED | — |
| Size | 77" | — |
| Refresh | 120Hz | — |
| Release year | 2024 | — |
| Display | — | 55″ / 65″ / 77″ / 83″ MLA OLED |
| Resolution | — | 4K 144Hz |
| HDR | — | Dolby Vision + HDR10 |
| HDMI | — | 4× HDMI 2.1 with 144Hz |
| VRR | — | G-Sync + FreeSync |
| ALLM | — | Yes |
TCL QM851G 77"
- +Strong HDR performance
- +Current smart platform
- +HDMI 2.1 on most HDMI ports
- −Ads on smart platform
- −Sound trails dedicated audio
- −Large footprint
LG G5 OLED
- +Brightest OLED ever at 2300 nits
- +4× HDMI 2.1 with 144Hz
- +Wall-flush gallery design
- −No tabletop stand included
- −webOS still ad-laden
- −Speakers below average
FAQ: TCL QM851G 77" vs LG G5 OLED
Which is better, TCL QM851G 77" or LG G5 OLED? +
LG G5 OLED scores 96 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.
Is TCL QM851G 77" worth the price? +
At $3,749, TCL QM851G 77" delivers a Specdex score of 92 — strongest in picture.
Is LG G5 OLED worth the price? +
At $3,299, LG G5 OLED delivers a Specdex score of 96 — strongest in display.
Does TCL QM851G 77" or LG G5 OLED 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 77" or LG G5 OLED? +
LG G5 OLED — leads on gaming (96 vs 88). Input lag, VRR, 120 Hz support.
Which is better for smart platform, TCL QM851G 77" or LG G5 OLED? +
TCL QM851G 77" — leads on smart (82 vs 78). OS speed, app support, ecosystem.