LG UT70 50" vs Vizio P-Series Quantum 65"
The Verdict
LG's UT70 offers solid 4K performance at an entry-level price point, while Vizio's P-Series Quantum 65 represents a significant step up in display technology and gaming capabilities. The UT70 delivers decent brightness at 300 nits with HDR10 support, a capable α5 AI processor, and full smart TV integration through webOS 24. However, it maxes out at 60Hz refresh rate and lacks variable refresh rate support, limiting its gaming potential. The P-Series Quantum transforms the equation with a 65-inch panel, 1200-nit peak brightness, full array local dimming for superior contrast control, and quantum dot technology for expanded color volume. Vizio adds 120Hz refresh rate, VRR support, and reduced input lag at 8ms versus LG's 14ms, making it genuinely responsive for gaming. The P-Series also includes four HDMI ports and Wi-Fi 6, compared to three ports and Wi-Fi 5 on the UT70. Both share identical 20-watt 2-channel audio and basic smart features. At roughly three times the price, Vizio justifies the premium through substantially better picture quality, gaming performance, and screen real estate. The LG excels as a budget-friendly 4K option for casual viewing, but the P-Series is the clear winner for anyone prioritizing premium picture quality and gaming responsiveness.
Who Should Buy
Buy the LG UT70 50" if…
- →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
Buy the Vizio P-Series Quantum 65" if…
- →Strong price-to-performance — quantum dot color and FALD at $999
- →Both Dolby Vision and HDR10+ support all HDR content
- →120Hz with VRR and ALLM for console and PC gaming
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 P-Series Quantum 65"
Pros
- Strong price-to-performance — quantum dot color and FALD at $999
- Both Dolby Vision and HDR10+ support all HDR content
- 120Hz with VRR and ALLM for console and PC gaming
- 1200 nits peak brightness makes HDR content pop
- Wide color gamut with quantum dot enhancement
Cons
- SmartCast platform is slow and has limited apps compared to Google TV
- 20W audio is very weak — a soundbar is essential
- Build quality and remote feel budget-oriented
- Vizio software support and updates can be inconsistent
Full Specifications
| Spec | LG UT70 50" | Vizio P-Series Quantum 65" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 300mm |
| Weight | 21.2 lbs | 44.7 lbs |
| Dimensions (w/ stand) | 44.1 x 28.2 x 8.3 inches | 56.9 x 35.3 x 12.0 inches |
| Dimensions | — | 56.9 x 32.9 x 3.0 inches |
| Audio | ||
| Output (watts) | 20 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 14 | 8 |
| Display | ||
| HDR | HDR10, HLG | Dolby Vision, HDR10+, HDR10, HLG |
| Size | 50" | 65" |
| Type | LED | Quantum Color LED (VA LCD, Full Array Local Dimming) |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K) |
| Refresh rate | 60Hz | 120Hz |
| Brightness (nits) | 300 | 1200 |
| Smart TV | ||
| Os | webOS 24 | SmartCast (Chromecast built-in) |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Google Assistant, Alexa (via voice remote) |
| Processor | ||
| Chipset | α5 AI Processor 4K Gen 7 | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6 |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 1 | 1 |
| HDMI ports | 3 | 4 |
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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.
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