Best For
Best for 4K Movies
TCL 43S423
Better Smart TV Experience
TCL 43S5K
Better Sound Quality
TCL 43S5K
Best Picture Detail
TCL 43S423
Best Overall Value
TCL 43S423
The TCL 43S423 and TCL 43S5K target different buyers despite sharing the same 43-inch screen size. The TCL 43S423 focuses on delivering a true 4K UHD viewing experience with HDR support, making it attractive for users who prioritize sharper picture quality and higher resolution content. Meanwhile, the TCL 43S5K offers a newer Google TV platform, QLED display technology, stronger built-in speakers, Bluetooth connectivity, and voice control features. Choosing between them comes down to whether you value 4K resolution for movies and streaming or prefer a smarter, feature-rich TV experience with improved color performance and modern smart features.
Verdict
The TCL 43S423 is the better choice for users who want 4K resolution and enhanced image detail for movies, streaming, and future-ready content. However, the TCL 43S5K is better suited for buyers looking for a more modern smart TV experience, stronger audio output, Google TV integration, voice control, and QLED color enhancement. Overall, the TCL 43S423 wins due to its significant advantage in display resolution, which has a bigger impact on everyday viewing quality.
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| Model No |
43S5K |
43S423 |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
43 Inch (109.22 cm) |
43 Inch (109.22 cm) |
| Resolution |
1920 x 1080 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
60 Hz |
60 Hz |
| Viewing Angle |
178°/178° |
178°/178° |
| USB |
| USB Version |
: 2.0 |
| Supported Audio Formats |
: MPEG, WMA, FLAC, MP3, AAC, WAV, OPUS |
| Supported Video Formats |
: AVI, MP4, MKV, TS, FLV, WMV, MOV, MPEG, WEBM, AVC, HEVC |
| Supported Picture Formats |
: JPEG, BMP, PNG, GIF |
|
| 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 |
|
| Video |
| Backlight |
: 2K FHD QLED |
| HLG |
: Yes |
| HDR 10+ |
: Yes |
| Panel Type |
: VA |
| Contrast Ratio |
: 4000:1( Typical ) |
|
| 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 |
|
| Audio |
| Sound Output Power( RMS ) |
: 2 X 12 W |
| Dolby Audio |
: Yes |
| Sound Channel |
: 2.0 Channel |
|
| Audio Output ( RMS ) |
: 2 Channel X 8 W |
| Dolby Processing |
: Dolby Digital |
| Audio Passthrough |
: Dolby Digital Plus |
|
| Connectivity Options |
| HDMI ( 2.0 ) |
: 2 |
| USB ( 2.0 ) |
: 1 |
| WiFi 4 |
: Yes |
| HDMI CEC |
: Yes |
| Bluetooth 5.0 |
: Yes |
| Ethernet / LAN |
: Yes |
|
| HDMI 2.0 |
: 3, w/HDCP 2.2 ( 1 ARC ) |
| USB 2.0 |
: 1 |
| Ethernet / LAN |
: 1 Yes |
| RF Input ( NTSC, ATSC ) |
: 1 Yes |
| Audio Output Headphone |
: 1 Yes |
| SPDIF Digital Audio Optical |
: 1 Yes |
| AV Input |
: Composite Video + L&R Audio In |
| Wireless Connection |
: 802.11ac 2x2 Dual Band ( support 2.4GHz & 5GHz ) |
|
| Smart TV Features |
| Operating System |
: Google TV |
| RAM |
: 1.5 GB |
| ROM |
: 16 GB |
| Netflix |
: Yes |
| YouTube |
: Yes |
| App Store |
: Yes |
| Prime Video |
: Yes |
| Google Cast |
: Yes |
| Voice Control |
: Yes |
| Disney+Hotstar |
: Yes |
| Multiple Viewing Mode |
: Yes |
| Google Assistant Built-In |
: Yes |
| Google Assistant |
: Voice Input Via Remote Control ( Optional ） |
|
| Operating System |
: Roku TV |
| CPU |
: Dual-core |
| GPU |
: Dual-core |
| Powerful Mobile App |
: Yes |
| Advanced PQ Setting With Mobile App |
: Yes |
|
| Other Features |
| Design |
: Metallic Bezel-Less Design |
| Color |
: Black |
| Subtitle |
: Yes |
| EPG |
: Yes ( DTV Programme Only ) |
| Warranty Summary |
: 1 Years Comprehensive Warranty On Product |
|
| 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 |
|
| General Details |
| Power Supply |
: AC 100V – 240V 50-60Hz |
| Power Consumption |
: 65 W |
| Power Consumption Standby |
: 0.5 W |
| Weight Without Stand |
: 5.02 Kg |
| Weight With Stand |
: 5.08 Kg |
| Weight With Packaging |
: 7.18 Kg |
| VESA Wall-Mounting |
: 100 mm X 100 mm |
|
| Power Supply (Voltage, Hz) |
: AC 100V-240V 50/60Hz |
| Annual Power Consumption |
: 83 kWh/Y |
| Power Consumption Standby |
: <0.5 W |
| Weight Without Stand |
: 7.39 Kg |
| Weight With Stand |
: 7.48 Kg |
| Packaging Weight |
: 10.47 Kg |
| VESA Walll Mount Pattern |
: 100 mm X 100 mm |
|
| Supplied Accessories |
| Remote Control |
: Yes |
| Stand |
: Yes |
| Power Cable |
: Yes |
| User Manual |
: Yes |
| 2N Batteries |
: Yes |
| Warranty Card |
: Yes |
|
| Remote Control |
: Roku TV RC280 |
| 2 AAA Batteries |
: Yes |
| Screw Size |
: M6 X 12 |
| Quick Start Guide |
: Yes English |
|
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Compare TCL 43S5K with:
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Compare TCL 43S423 with:
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Frequently Asked Questions
Which product is better for gaming?
The TCL 43S5K has a dedicated Game Mode and lower-resolution rendering requirements, making it slightly better for casual gaming.
Does Product 1 support Dolby Atmos?
No, the TCL 43S423 supports Dolby Digital and Dolby Digital Plus passthrough but does not list Dolby Atmos support.
Which TV has better picture quality?
The TCL 43S423 delivers better picture detail thanks to its 4K UHD resolution, while the TCL 43S5K offers richer colors through its QLED panel.
Which TV has the better smart platform?
The TCL 43S5K offers a more advanced smart TV experience with Google TV, Google Assistant, voice control, and Chromecast support.
Which TV has better audio performance?
The TCL 43S5K provides stronger audio output with 24W total speaker power compared to the 16W system on the TCL 43S423.
Is the TCL 43S423 worth buying over the TCL 43S5K?
Yes, if your priority is sharper 4K content and long-term picture quality, the TCL 43S423 is the better purchase despite having fewer smart features.
Top Differences- Resolution: UHD Vs 1920 x 1080
- Display Technology: 4K UHD HDR LED Vs 2K FHD QLED
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