LG UT70 50" vs TCL S4 55"
The Verdict
Both deliver solid 4K performance at budget-friendly prices, but serve different priorities. LG UT70's 50-inch panel suits smaller spaces with its superior brightness (300 nits) and snappier gaming response (14ms input lag), plus ALLM support for console compatibility. Meanwhile, TCL S4 offers greater real estate at 55 inches with brighter 400-nit panel and Dolby Vision HDR support, though its 30ms input lag and absent ALLM make it less gaming-focused. LG edges ahead in audio power (20W vs 15W) and processor sophistication via Alpha 7 AI chip, while TCL compensates with larger screen and better HDR format support. For gaming enthusiasts or cramped rooms, LG UT70 wins; for cinephiles wanting maximum screen with Dolby Vision, TCL S4 justifies the trade-offs. Budget-conscious buyers should choose based on space: UT70 for tight quarters, S4 for family rooms.
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 TCL S4 55" if…
- →Extraordinary value at $279 for a 55-inch 4K Google TV
- →Google TV offers access to virtually every streaming service out of the box
- →Lightweight and easy to install — great for bedrooms, kitchens, or secondary rooms
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
TCL S4 55"
Pros
- Extraordinary value at $279 for a 55-inch 4K Google TV
- Google TV offers access to virtually every streaming service out of the box
- Lightweight and easy to install — great for bedrooms, kitchens, or secondary rooms
- Decent picture for casual streaming at typical 8–10 foot viewing distances
Cons
- 60Hz panel is not suitable for gaming or fast-motion sports content
- Low peak brightness of ~400 nits struggles in bright, sunlit rooms
- No HDMI 2.1 — limits PS5 and Xbox Series X to 4K@60Hz only
- 15W audio output is thin and lacks bass — an external soundbar is recommended
- No VRR or ALLM means gaming performance is not a priority for this model
Full Specifications
| Spec | LG UT70 50" | TCL S4 55" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 200 x 200mm |
| Weight | 21.2 lbs | 28.7 lbs |
| Dimensions (w/ stand) | 44.1 x 28.2 x 8.3 inches | 48.5 x 32.4 x 9.2 inches |
| Audio | ||
| Output (watts) | 20 | 15 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 14 | 30 |
| Display | ||
| HDR | HDR10, HLG | HDR10, Dolby Vision, 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 |
| Processor | ||
| Chipset | α5 AI Processor 4K Gen 7 | AiPQ Lite Processor |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 5 (802.11ac) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 1 | 1 |
| HDMI ports | 3 | 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.
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