LG UT70 50" vs Sony X77L 55"
The Verdict
Both TVs deliver solid 4K performance at budget-friendly price points, but serve different buyer profiles. LG UT70's 50-inch panel costs $329 with webOS 24 and a capable α5 AI processor, achieving 300 nits brightness and 14ms input lag. Sony X77L steps up to 55 inches for $549, offering noticeably brighter 400-nit display, superior X1 4K HDR processing, and more connectivity (4 HDMI vs 3, 2 USB vs 1). Both lack VRR for gaming and deliver identical 20W audio. Picture quality edges toward Sony thanks to extra brightness and better upscaling for non-4K content. LG excels as a budget buy for basic streaming and casual viewing in smaller spaces. Choose Sony X77L if you prioritize larger screen size, enhanced picture processing, and superior long-term content versatility,the extra $220 investment justified by brightness advantage and processor capability.
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 Sony X77L 55" if…
- →Sony's color accuracy and motion handling are superior to budget competitors
- →Google TV with Chromecast built-in and Apple AirPlay 2
- →Four HDMI ports are generous at this price
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
Sony X77L 55"
Pros
- Sony's color accuracy and motion handling are superior to budget competitors
- Google TV with Chromecast built-in and Apple AirPlay 2
- Four HDMI ports are generous at this price
- Motionflow XR produces smooth motion for sports and movies
- Clean, minimalist design fits any room
Cons
- 60Hz panel — not ideal for gaming or fast action
- No Dolby Vision — surprising for a Sony TV
- 400-nit brightness is low for HDR content
- No VRR for next-gen console gaming
Full Specifications
| Spec | LG UT70 50" | Sony X77L 55" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 200 x 200mm |
| Weight | 21.2 lbs | 27.6 lbs |
| Dimensions (w/ stand) | 44.1 x 28.2 x 8.3 inches | 48.5 x 30.9 x 10.6 inches |
| Audio | ||
| Output (watts) | 20 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 14 | 15 |
| Display | ||
| HDR | HDR10, HLG | HDR10, HLG |
| 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 | Google TV |
| Voice assistant | ThinQ AI, Alexa, Google Assistant | Google Assistant, Alexa, Apple AirPlay 2 |
| Processor | ||
| Chipset | α5 AI Processor 4K Gen 7 | X1 4K HDR Processor |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 5 (802.11ac) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 1 | 2 |
| HDMI ports | 3 | 4 |
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.
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