| Model No |
55S423-CA |
55UM7450PVA |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
55 Inch (139 cm) |
55 Inch (139 cm) |
| Resolution |
4K 3840 x 2160 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
120 Hz |
50 Hz |
| Viewing Angle |
178°/178° |
178°/178° |
| USB |
| USB Version |
: 2.0 |
| Supported Audio Formats |
: AAC, MP3, WMA, WAV ( PCM ), AIFF, FLAC, AC3 |
| Supported Video Formats |
: MKV (H.264), MP4, MOV ( H.264 ), TS ( H.264 ) |
| Supported Picture Formats |
: JPEG, PNG, GIF |
|
| USB Version |
: 2.0 |
| Supported Audio Formats |
: MP3, AC4, AC3, EAC3, AAC, MP2, PCM, WMA |
| Supported Video Formats |
: MKV, DivX, MP4, AVI, ASF, MOV, FLV |
| Supported Picture Formats |
: JPEG, JPS, MPO |
|
| Video |
| Backlight |
: 4K UHD HDR LED |
| HDR10 |
: Yes |
| Resolution |
: UHD |
| Clear Motion Index |
: 120Hz CMI |
| Display Colors |
: 1.07 Billion |
| Picture Engine |
: 4K Creative Pro Upscaling Engine |
|
| Backlight |
: 4K UHD Direct LED |
| 2K HFR |
: Yes |
| IPS Panel |
: Yes |
| Wide Viewing Angle |
: Yes |
| Noise Reduction |
: NR |
| Upscaler |
: 4K Upscaler |
| HDR |
: 4K Active HDR |
| HDR Effect |
: Yes ( 4K / 2K ) |
| Video Decoder VP9 |
: 4K@60P, 10Bit |
| Video Decoder HEVC |
: 4K@60P, 10Bit |
| Color Accuracy |
: True Color Accuracy |
| Color Enhancer |
: Advanced Color Enhancer |
| Dynamic Tone Mapping |
: HDR Dynamic Tone Mapping |
| HLG |
: Yes / Yes / Yes / Yes ( 4K / 2K ) |
| HDR10 Pro |
: Yes / Yes / Yes / Yes ( 4K / 2K ) |
| Picture Mode |
: Yes 9 Modes ( Vivid, Standard, Eco, Cinema, Sports, Game, HDR Effect, ( ISF ) Expert ( Bright Room ), ( ISF ) Expert ( Dark Room )) |
|
| Audio |
| Audio Output ( RMS ) |
: 2 Channel X 8 W |
| Dolby Processing |
: Dolby Digital |
| Audio Passthrough |
: Dolby Digital Plus |
|
| Audio Output ( RMS ) |
: 20 W ( 10 W Per Channel ) |
| DTS Decoder |
: Yes |
| Clear Voice III |
: Yes |
| DTS Virtual : X |
: Yes |
| LG Sound Sync |
: Yes |
| Adaptive Sound Control |
: Yes |
| Bluetooth Audio Playback |
: Yes |
| One Touch Sound Tuning |
: Yes |
| Auto Notification ( Bluetooth Easy Paring ) |
: Yes |
| Speaker Direction |
: Down Firing |
| Speaker System |
: 2.0 Channel |
| Surround Mode |
: DTS Virtual : X |
| Simultaneous Audio Output |
: Yes ( Optical Output Or HP Support Model ) |
| Audio Codec |
: AC4, AC3 ( Dolby Digital ), EAC3, HE-AAC, AAC, MP2, MP3, PCM, DTS, DTS-HD, DTS Express, WMA, apt-X ( Refer To Manual ) |
|
| Connectivity Options |
| HDMI 2.0 |
: 3, w/HDCP 2.2 ( 1 ARC ) |
| USB 2.0 |
: 1 |
| SPDIF Digital Audio Optical |
: 1 Yes |
| Audio Output Headphone |
: 1 Yes |
| AV Input |
: Composite Video + L&R Audio In |
| Wireless Connection |
: 802.11ac 2X2 Dual Band ( support 2.4GHz & 5GHz ) |
|
| HDMI 2.0 |
: 3 ( 2 Side, 1 Rear ) |
| USB 2.0 |
: 2 ( 1 Side, 1 Rear ) |
| Bluetooth 5.0 |
: Yes |
| Simplink ( HDMI CEC ) |
: Yes |
| Ethernet / LAN |
: Yes Rear |
| Optical Digital Audio Out ( SPDIF ) |
: Yes Rear |
| Wi-Fi |
: 802.11ac |
| Audio Return Channel ( eARC / ARC ) |
: ARC HDMI 2 |
| RF In |
: 2 ( Rear, RF / Sat ) * Iran : 1 ( Rear, RF ) |
| Component |
: Yes ( Rear, Component in / AV in common ) |
| Composite In ( AV ) |
: Yes ( Rear, Component in / AV in common ) |
|
| Smart TV Features |
| Operating System |
: Roku TV |
| CPU |
: Dual-core |
| GPU |
: Dual-core |
| Powerful Mobile App |
: Yes |
| Advanced PQ Setting With Mobile App |
: Yes |
|
| Operating System |
: WebOS Smart TV |
| CPU |
: Quad Core |
| DIAL |
: Yes |
| AI UX |
: Yes |
| ThinQ |
: Yes |
| AI Home |
: Yes |
| Hotel Mode |
: Yes |
| Wi-Fi TV On |
: Yes |
| 360° VR Play |
: Yes |
| Music Player |
: Yes |
| Quick Access |
: Yes |
| Screen Share |
: Yes |
| Mobile TV On |
: Yes |
| Web Browser |
: Yes |
| Intelligent Edit |
: Yes |
| LG TV Plus App |
: Yes |
| Speech To Text |
: Yes |
| LG Voice Search |
: Yes |
| Smart ThinQ App |
: Yes |
| LG Content Store |
: Yes |
| Universal Control |
: Yes |
| Home Dashboard |
: Yes |
| Mobile Connectivity |
: Yes |
| AI Recommendation |
: Yes |
| Auto Device Detection |
: Yes |
| Network File Browser |
: Yes |
| Bluetooth Low Energy On |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Block Access To Harmful Site |
: Yes |
| Magic Remote Control |
: Built-In |
| Magic Link |
: Yes ( Iran, Syria, Sudan Excludes Youtube ) |
|
| Other Features |
| Closed Caption |
: Yes |
| 1 Year Limited Warranty |
: Yes |
| Parental Control ( V-Chip ) |
: Yes |
| Accessible Menu System ( CVAA ) |
: Yes |
| Control Buttons |
: Power/Power/Menu, <,> |
| Multilingual On-Screen-Display |
: English, Spanish, French |
| Signal Format Capability |
: ATSC / NTSC / Clear QAM |
|
| Design |
: Premium Design |
| Time Shift |
: Yes |
| Analog DVR |
: Yes |
| EPG ( 8 days ) |
: Yes |
| Teletext Page |
: Yes |
| Subtitle [ DVB ] |
: Yes |
| Digital Recording |
: Yes |
| Audio Description |
: Yes |
| Analog TV Reception |
: Yes |
| Time Machine ( DVR ) |
: Yes |
| Teletext ( Top / Flof / List ) |
: Yes |
| Data Broadcasting ( Country Spec ) |
: Yes |
| Instant Game Response ( ALLM ) |
: Yes |
| Cable |
: DVB-C |
| Satellite |
: DVB-S2 |
| Terrestrial |
: DVB-T2 |
| VESA Wall Mount Model |
: Refer To Accessory Sheet |
| Digital TV Reception ( Terrestrial, Cable, Satellite ) |
: Yes DVB-T2/C/S2 ( IRAN : DVB-T2/C ) |
|
| General Details |
| Power Supply (Voltage, Hz) |
: AC 100V-240V 50/60Hz |
| Annual Power Consumption |
: 108 kWh/Y |
| Power Consumption Standby |
: <0.5 W |
| Weight Without Stand |
: 12.11 Kg |
| Weight With Stand |
: 12.29 Kg |
| Packaging Weight |
: 17.78 Kg |
| VESA Walll Mount Pattern |
: 200 mm X 200 mm |
|
| Power Supply ( Voltage, Hz ) |
: AC 100~240V 50-60Hz |
| On-Mode Power Consumption |
: 126.0 W |
| Peak Luminance Ratio of On-Mode or Home-Mode |
: 184 W |
| Standby / Off-Mode Power Consumption |
: 0.23 W |
| Presence of Lead |
: Yes |
| Energy Saving Mode |
: Yes |
| Energy Efficiency Label |
: 3 |
| Peak Luminance In Percentage |
: 81 % |
| Weight Without Stand |
: 14.6 Kg |
| Weight With Stand |
: 15.6 Kg |
| Illuminance Green Sensor |
: Yes ( White Sensor ) |
|
| Supplied Accessories |
| Remote Control |
: Roku TV RC280 |
| 2 AAA Batteries |
: Yes |
| Screw Size |
: M6 X 12 |
| Quick Start Guide |
: Yes English |
|
| Remote Control |
: MR19 |
| Power Cable |
: Yes ( TV Detached ) |
| Batteries |
: Yes ( MR19 : AA X 2EA / L-Con : AAA X 2EA ) |
|
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Compare TCL 55S423-CA with:
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Compare LG 55UM7450PVA with:
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Key Differences
Audio output differs between the two (2 Channel X 8 W vs 20 W ( 10 W Per Channel )), which can influence overall sound clarity and loudness. TCL 55S423-CA and LG 55UM7450PVA differ in resolution (UHD vs 4K 3840 x 2160), which can affect overall clarity and sharpness of the display. TCL 55S423-CA and LG 55UM7450PVA are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. TCL 55S423-CA and LG 55UM7450PVA offer different motion rates (120 Hz vs 50 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. Verdict: Both TVs are strong contenders, and your final choice should depend on your preference for screen size, motion performance, and smart features.
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ALERT
