LG QNED80 55" vs Vizio M7 Q-Series 55"
The Verdict
LG's QNED80 delivers superior picture quality through its quantum dot nanoCell technology, producing 700 nits of brightness versus Vizio's 600 nits, alongside native 120Hz refresh rates that benefit gaming with variable refresh rate support and 10ms input lag. Vizio's M7 Q-Series counters with aggressive pricing at $499, Wi-Fi 6 connectivity, and Dolby Vision HDR support, making it compelling for budget-conscious buyers. Gaming performance notably favors LG thanks to VRR capability and faster response times, while both TVs share identical 20W audio systems. Vizio's thinner profile (3.2 inches vs 9.3 inches with stand) offers aesthetic advantages, but the LG's superior brightness, faster refresh rate, and gaming features justify the $200 premium for movie enthusiasts and console gamers. For pure value with acceptable performance, the Vizio works well; for best overall experience, LG wins decisively.
Who Should Buy
Buy the LG QNED80 55" if…
- →120Hz native panel with VRR at a mid-range price
- →Dolby Vision support for superior HDR compared to HDR10+ only TVs
- →webOS 24 is one of the best smart TV platforms available
Buy the Vizio M7 Q-Series 55" if…
- →Quantum color at $499 delivers vivid, wide gamut colors
- →Dolby Vision and HDR10+ dual support is rare at this price
- →Local dimming zones improve contrast over basic LED TVs
Category Scores
Pros & Cons
LG QNED80 55"
Pros
- 120Hz native panel with VRR at a mid-range price
- Dolby Vision support for superior HDR compared to HDR10+ only TVs
- webOS 24 is one of the best smart TV platforms available
- Four HDMI ports with ALLM for multi-device setups
- Quantum Dot + NanoCell technology improves color accuracy
Cons
- Not OLED — contrast and black levels are significantly behind
- 700-nit brightness is modest for HDR highlights
- 20W speakers are underwhelming — needs a soundbar
- Edge-lit LED can show uneven backlighting in dark scenes
Vizio M7 Q-Series 55"
Pros
- Quantum color at $499 delivers vivid, wide gamut colors
- Dolby Vision and HDR10+ dual support is rare at this price
- Local dimming zones improve contrast over basic LED TVs
- Wi-Fi 6 for fast, reliable streaming
- Lightweight at 29.5 lbs for easy installation
Cons
- 60Hz panel — no 120Hz or VRR for gaming
- SmartCast OS is sluggish and frustrating to navigate
- Only 3 HDMI ports, no HDMI 2.1
- 20W speakers are thin and lacking bass
- 600 nits is modest — HDR highlights don't fully shine
Full Specifications
| Spec | LG QNED80 55" | Vizio M7 Q-Series 55" |
|---|---|---|
| Body | ||
| VESA mount | 300 x 300mm | 200 x 200mm |
| Weight | 28.4 lbs | 29.5 lbs |
| Dimensions (w/ stand) | 48.5 x 30.7 x 9.3 inches | 48.3 x 30.2 x 9.6 inches |
| Dimensions | — | 48.3 x 28.0 x 3.2 inches |
| Audio | ||
| Output (watts) | 20 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 10 | 12 |
| Display | ||
| HDR | HDR10, HLG, Dolby Vision | Dolby Vision, HDR10+, HDR10, HLG |
| Size | 55" | 55" |
| Type | QNED (Quantum Dot NanoCell) | Quantum Color LED (VA LCD) |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K) |
| Refresh rate | 120Hz (native) | 60Hz |
| Brightness (nits) | 700 | 600 |
| Smart TV | ||
| Os | webOS 24 | SmartCast (Chromecast built-in) |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Google Assistant, Alexa |
| Processor | ||
| Chipset | α8 AI Processor 4K | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6 |
| Ethernet | ||
| Bluetooth | 5.1 | 5.0 |
| USB ports | 2 | 1 |
| HDMI ports | 4 | 3 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in tvs, see all LG products or all Vizio products. View full details for the LG QNED80 55" or the Vizio M7 Q-Series 55".