| Model No |
OLED77C5YUA |
75QM851G |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
77 Inch (195.58 cm) |
75 Inch (191 cm) |
| Resolution |
4K 3840 x 2160 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
120 Hz |
120 Hz |
| Viewing Angle |
178°/178° |
178°/178° |
| USB |
| 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, PNG, BMP, WebP, JPS, MPO |
|
| USB Version |
: 3.0 |
| 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 |
: 4K UHD OLED |
| HLG |
: Yes |
| HDR10 |
: Yes |
| Dolby Vision |
: Yes |
| AI Picture Pro |
: Yes |
| Auto Calibration |
: Yes |
| Filmmaker Mode ™ |
: Yes |
| AI Brightness Control |
: Yes |
| Quick Media Switching ( QMS ) |
: Yes |
| OLED Dynamic Tone Mapping Pro |
: Yes |
| Wide Color Gamut |
: OLED Color |
| Motion |
: OLED Motion |
| Dimming Technology |
: Pixel Dimming |
| AI Genre Selection |
: Yes ( SDR, HDR ) |
| High Frame Rate ( HFR ) |
: 4K 120 Fps ( HDMI, USB ) |
| Picture Processor |
: α9 AI Processor 4K Gen8 |
| AI Upscaling |
: α9 AI Super Upscaling 4K |
| Picture Mode |
: 10 Modes ( Personalized Picture Wizard, Vivid, Standard, Eco, Cinema, Sports, Game, Filmmaker, ( ISF ) Expert ( Bright Room ), ( ISF )Expert ( Dark Room )) |
|
| Backlight |
: 4K UHD QD-Mini LED ULTIMATE With QLED ULTRA |
| HLG |
: Yes |
| HDR 10 |
: Yes |
| HDR 10+ |
: Yes |
| Dolby Vision IQ |
: Yes |
| Anti-Glare Screen |
: Yes |
| Display Colors |
: 1.07 Billion Colors |
| Brightness |
: Up To 5,000 Nits Peak |
| QLED ULTRA |
: Quantum Dot Technology |
| Description |
: Ultimate 4K QD-Mini LED TV |
| Backlight Type |
: High Brightness Ultimate LED Backlight |
| Motion Enhancement Technology |
: Motion Rate 480 With MEMC Frame Insertion |
| Picture Engine |
: TCL AIPQ ULTRA Processor With Deep Learning AI |
|
| Audio |
| Audio Output ( RMS ) |
: 40 W |
| Dolby Atmos |
: Yes |
| LG Sound Sync |
: Yes |
| WOW Orchestra |
: Yes |
| AI Acoustic Tuning |
: Yes |
| Sound Mode Share |
: Yes |
| Simultaneous Audio Output |
: Yes |
| Speaker Direction |
: Down Firing |
| Speaker System |
: 2.2 Channel |
| Bluetooth Surround Ready |
: Yes ( 2 Way Playback ) |
| WiSA Ready |
: Yes ( Up To 2.1 Channel ) |
| Clear Voice Pro |
: Yes ( AI Voice Remastering ) |
| AI Sound |
: α9 AI Sound Pro ( Virtual 11.1.2 Up-Mix ) |
| Audio Codec |
: AC4, AC3 ( Dolby Digital ), EAC3, HE-AAC, AAC, MP2, MP3, PCM, WMA, apt-X ( Refer To Manual ) |
|
| Audio Output ( RMS ) |
: 80 W ( 2 X 20 W L / R Speakers + 20 W Subwoofer + 2 X 10 W Up-Firing Speakers ) |
| Dolby Atmos Audio |
: Yes |
| Bluetooth Personal Audio |
: Yes |
| Built-in ONKYO Subwoofers |
: Yes |
| IMAX Enhanced Certification |
: Yes |
| DTS Processing |
: DTS Virtual : X |
| Dolby Processing |
: Dolby Atmos, Dolby Digital + |
| Speaker System |
: ONKYO 2.1.2 Speaker System |
| Speaker Type |
: Built-In ONKYO Up-Firing Speakers |
| Audio Passthrough |
: Dolby Atmos, Dolby Digital +, Dolby Digital, PCM |
|
| Connectivity Options |
| HDMI 2.1 |
: 4ea ( Supports 4K 120Hz, eARC, VRR, ALLM, QMS ( 4 Port )) |
| USB 2.0 |
: 3ea |
| Ethernet / LAN |
: 1ea |
| RF Input ( Antenna / Cable ) |
: 2ea |
| Optical Digital Audio Out ( SPDIF ) |
: 1ea |
| Wi-Fi 6 |
: Yes |
| Bluetooth 5.3 |
: Yes |
| Simplink ( HDMI CEC ) |
: Yes |
| HDMI Audio Return Channel |
: eARC ( HDMI 2 ) |
|
| HDMI 2.1 |
: 4 ( 1 eARC ) |
| USB 3.0 + 2.0 |
: 3 ( 3.0 X 1, 2.0 X 2 ) |
| Bluetooth |
: Yes |
| Ethernet / LAN |
: Yes |
| Chromecast Built-In |
: Yes |
| Audio Output Headphone |
: 1 Yes |
| RF Input ( NTSC, ATSC ) |
: 1 Yes |
| SPDIF Digital Audio Optical |
: 1 Yes |
| Wi-Fi |
: Wi-Fi 6 ( 802.11ax ) |
| AV Input |
: Composite Video + L & R Audio In ( Mini 3.5 mm Connector ) |
|
| Smart TV Features |
| Operating System |
: WebOS 25 Smart TV |
| Voice ID |
: Yes |
| Home Hub |
: Yes |
| AI Chatbot |
: Yes |
| Multi View |
: Yes |
| Google Cast |
: Yes |
| LG Channels |
: Yes |
| Always Ready |
: Yes |
| Full Web Browser |
: Yes |
| Google Home, Hub |
: Yes |
| USB Camera Compatible |
: Yes |
| Works With Apple Home |
: Yes |
| Hands-Free Voice Control |
: Yes |
| Works With Apple Airplay |
: Yes |
| Intelligent Voice Recognition |
: Yes |
| Magic Remote Control Built-In |
: Yes |
| Smartphone Remote App |
: Yes ( LG ThinQ ) |
|
| Operating System |
: Google TV |
| Netflix |
: Yes |
| Disney+ |
: Yes |
| YouTube |
: Yes |
| Apple TV |
: Yes |
| YouTube TV |
: Yes |
| Apple Airplay2 |
: Yes |
| Backlit Voice Remote |
: Yes |
| Hands-Free Voice Control |
: Yes |
| Internet Applications |
: Netflix, HBO Max, Disney Plus, Hulu, YouTube |
| Works With |
: Amazon Alexa, Google Assistant, Apple HomeKit |
|
| Other Features |
| Design |
: Ultra Slim Design |
| Gray Scale |
: Yes |
| Invert Colors |
: Yes |
| High Contrast |
: Yes |
| Analog TV Reception |
: Yes |
| Limited Warranty |
: 1 Year Parts & Labor |
| Digital TV Reception |
: DVB-T2/T ( Terrestrial ), DVB-C ( Cable ), DVB-S2/S ( Satellite ) |
|
| Design |
: Full View 360 Metal Bezel-Less Design / Elegant Edge-To-Edge Glass Design |
| Sleep Timer |
: Yes |
| Closed Caption |
: Yes |
| JPEG / MP3 For USB |
: Yes |
| Game Accelerator 240 |
: Yes |
| Auto Game Mode ( ALLM ) |
: Yes |
| Parental Control ( V -Chip ) |
: Yes |
| AMD FreeSync Premium Pro |
: Yes |
| Accessible Menu System ( CVAA ) |
: Yes |
| ATSC 3.0 NextGen TV Digital Tuner |
: Yes |
| Control Buttons |
: One Button |
| Tuner Type |
: ATSC, NTSC, Clear QAM |
| Multilingual On-Screen-Display |
: English, Spanish, French |
| Warranty |
: 1 Year Limited Warranty |
|
| General Details |
| Power Supply |
: AC 200~240V 50-60Hz |
| Standby Power Consumption |
: Under 0.5 W |
| Energy Star Rating |
: 2 |
| Weight Without Stand |
: 23.5 Kg |
| Weight With Stand |
: 27.1 Kg |
| Packaging Weight |
: 38.5 Kg |
| VESA Mounting |
: 300 mm X 200 mm |
|
| Power Supply ( Voltage, Hz ) |
: AC 100V-240V 50/60Hz |
| Annual Power Consumption |
: 531 kWh/Y |
| Power Consumption Standby |
: < 0.5 W |
| Weight Without Stand |
: 33.02 Kg |
| Weight With Stand |
: 38.50 Kg |
| Package Weight |
: 48.98 Kg |
| Screw Size |
: M6 X 12 |
| VESA Walll Mount Pattern |
: 500 mm X 400 mm |
|
| Supplied Accessories |
| Remote Control |
: Magic Remote Control MR25 |
| Power Cable |
: Yes ( Attached ) |
|
| Remote Control |
: Backlit Voice Remote Control |
| Power Cable |
: Yes |
| 2 X AAA Batteries |
: Yes |
| Warranty Info English |
: Yes |
| Quick Start Guide English |
: Yes |
|
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Compare LG OLED77C5YUA with:
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Compare TCL 75QM851G with:
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Key Differences
From a practical standpoint, both options provide a reliable viewing experience for most users. Audio output differs between the two (80 W ( 2 X 20 W L / R Speakers + 20 W Subwoofer + 2 X 10 W Up-Firing Speakers ) vs 40 W), which can influence overall sound clarity and loudness. TCL 75QM851G features a 75 Inch (191 cm) screen while LG OLED77C5YUA comes with 77 Inch (195.58 cm), which can make a noticeable difference depending on your room size and viewing distance. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. TCL 75QM851G and LG OLED77C5YUA are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. 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
