LG UT70 50" vs Vizio V-Series 55"
Updated Apr 2026
The Verdict
LG's UT70 offers excellent value at $329 for a 50-inch 4K display with sharp 3840x2160 resolution and LG's capable α5 AI Processor, plus ALLM gaming support and lower 14ms input lag. Vizio's V-Series 55" counters with a larger 55-inch screen, superior brightness at 400 nits versus 300, and broader HDR support including Dolby Vision and HDR10+. Picture quality edges toward Vizio due to enhanced brightness and HDR capabilities. Gaming performance slightly favors LG with faster response times, though neither TV offers VRR. Audio performance is identical at 20W 2.0ch. Vizio's larger screen and picture quality advantages justify spending only $30 less despite the heavier 30.6lb frame. For most living rooms, the Vizio V-Series 55" delivers superior value with its bigger display and better HDR performance, making it the stronger choice.
Category Scores
Pros & Cons
LG UT70 50"
Pros
- webOS 24 smart TV platform at budget pricing — best-in-class software for the price
- AI-assisted upscaling from the α5 processor improves SD/HD content
- Magic Remote with point-and-click navigation included
- Lightweight and easy to mount at 21 lbs
- Supports Alexa, Google Assistant, and Apple AirPlay 2
Cons
- 60Hz panel — no 120Hz or VRR for gaming
- Low brightness limits HDR impact
- No Dolby Vision — only basic HDR10
- Narrow viewing angles typical of budget VA panels
Vizio V-Series 55"
Pros
- Very affordable at $299 for a 55-inch 4K TV with Dolby Vision support
- AirPlay 2 and Chromecast built-in enable easy casting from phones and tablets
- SmartCast is straightforward and quick to navigate for basic streaming needs
- Lightweight at 30.6 lbs — easy to mount or move between rooms
Cons
- 60Hz panel is unsuitable for gaming or watching fast-motion sports content
- SmartCast app ecosystem is more limited than Google TV or Tizen
- Only three HDMI ports — none support HDMI 2.1 bandwidth
- Low brightness and basic LED backlighting delivers mediocre HDR impact
- No VRR or ALLM, and ~20ms input lag makes it a poor choice for gamers
Full Specifications
| Spec | LG UT70 50" | Vizio V-Series 55" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 200 x 200mm |
| Weight | 21.2 lbs | 30.6 lbs |
| Dimensions (w/ stand) | 44.1 x 28.2 x 8.3 inches | 48.6 x 32.1 x 8.9 inches |
| Audio | ||
| Output (watts) | 20 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 14 | 20 |
| Display | ||
| HDR | HDR10, HLG | HDR10, HDR10+, HLG, Dolby Vision |
| Size | 50" | 55" |
| Type | LED | LED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K UHD) |
| Refresh rate | 60Hz | 60Hz |
| Brightness (nits) | 300 | 400 |
| Smart TV | ||
| Os | webOS 24 | SmartCast |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Apple AirPlay 2, Chromecast built-in, Alexa, Google Assistant |
| Processor | ||
| Chipset | α5 AI Processor 4K Gen 7 | Vizio IQ Active Processor |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 5 (802.11ac) |
| Ethernet | ||
| Bluetooth | 5.0 | 4.2 |
| USB ports | 1 | 1 |
| HDMI ports | 3 | 3 |
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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 UT70 50" or the Vizio V-Series 55".