LG 75QNED85AUA 75" VS TCL 75QM6K 75"

Both the LG 75QNED85AUA and the TCL 75QM6K share a strong display foundation: native 4K (3840 x 2160) resolution, a 59 ppi pixel density, 10-bit color depth rendering 1.07 billion colors, a 144Hz refresh rate, and identical 178° horizontal and vertical viewing angles. Both also use Mini-LED backlighting, which enables finer local dimming zones compared to standard LED, improving contrast and HDR precision across the panel.

The most meaningful differentiator lies in HDR ecosystem support and display technology. The TCL adds a QLED quantum dot layer on top of its Mini-LED backlight — a combination that typically widens the color gamut and boosts peak brightness potential compared to the LG's non-quantum-dot panel. On the HDR side, the LG is limited to HDR10 and HLG, while the TCL also supports HDR10+ and Dolby Vision. In practice, Dolby Vision is the most widely deployed premium HDR format on streaming platforms like Netflix and Apple TV+, and HDR10+ covers Amazon Prime content — so the TCL can display dynamic tone-mapped HDR on a significantly broader range of content. For gaming, the TCL also adds AMD FreeSync Premium Pro, which layers in Low Framerate Compensation and HDR requirements on top of standard FreeSync Premium, offering a more complete variable refresh rate experience.

The LG holds no exclusive display advantages based on the provided specs — the two TVs are matched everywhere the LG competes, and the TCL extends ahead in HDR format coverage, color technology, and gaming sync capability. The TCL 75QM6K has a clear display-group edge for both cinematic HDR viewing and gaming use cases.

The wired connectivity picture is identical across both TVs: 4 HDMI 2.1 ports, 2 USB ports, a single RJ45 ethernet jack, and Miracast support — a solid, modern layout that covers virtually all home theater and gaming setups without compromise.

Wireless is where the two diverge. The LG's Wi-Fi support extends to Wi-Fi 6E (802.11ax), while the TCL tops out at Wi-Fi 5 (802.11ac). This is a meaningful gap in households with a Wi-Fi 6E router: Wi-Fi 6E operates on the less congested 6 GHz band, offering lower latency and more stable throughput — relevant for 4K streaming, frequent firmware updates, and any scenario where interference from neighboring networks is a factor. The TCL counters with Bluetooth 5.4 versus the LG's 5.3, a marginal generational step that brings minor improvements to connection reliability and coexistence with other wireless devices, though the real-world difference in daily TV use is negligible.

On balance, the LG 75QNED85AUA holds the connectivity edge, and it comes down entirely to Wi-Fi 6E. For users with modern routers, that additional band can meaningfully reduce wireless congestion and latency compared to the TCL's Wi-Fi 5 ceiling. The Bluetooth version difference does not offset this advantage in any practical way.

The two TVs share a respectable common audio foundation: stereo speakers with a built-in subwoofer, Dolby Atmos, Dolby Digital Plus, and both HDMI ARC and eARC — the latter being particularly important for passing high-bandwidth audio formats to a soundbar or AV receiver without a separate optical cable.

Where the TCL 75QM6K pulls ahead is DTS coverage. The LG carries no DTS support whatsoever, while the TCL adds DTS Surround, DTS-HD High Resolution, and DTS:X. In practice, this matters most for physical media enthusiasts: Blu-ray discs frequently encode audio in DTS-HD Master Audio or DTS:X, and without native decoding support, the LG would need to downmix or pass through those tracks undecoded to an external receiver. The TCL handles them directly, which is a tangible advantage for home theater setups centered around disc playback.

For streaming-only households where Dolby Atmos dominates, the gap narrows considerably — both TVs are equally equipped there. But taken across the full range of audio formats a 75-inch TV is likely to encounter, the TCL 75QM6K has the broader codec support and the clearer audio-group advantage.

At 75 inches, both TVs occupy nearly identical footprints — within 5 mm of each other in width and height — so neither will fit a space the other won't. Both also support VESA mounting, keeping wall-install options equally open. The real design story, however, is in the two dimensions that diverge sharply.

The LG is dramatically slimmer at 30.5 mm thick versus the TCL's 55.9 mm — nearly half the depth. That near-flush profile makes a meaningful aesthetic difference on a wall mount, where the LG will sit close to the surface while the TCL protrudes almost twice as far. The weight gap is equally striking: the LG weighs 34,019 g against the TCL's 26,218 g, meaning the TCL is roughly 8 kg lighter. That difference is directly felt during installation — a lighter panel requires less robust wall anchoring and is noticeably easier to maneuver with fewer people.

The design group splits cleanly: the LG 75QNED85AUA wins on profile and wall aesthetics thanks to its significantly thinner chassis, while the TCL 75QM6K wins on installation practicality due to its substantially lower weight. Which advantage matters more depends on the setup — wall-mounted in a living room favors the LG's slim look; a two-person installation or frequent repositioning favors the TCL's lighter build.

Across the bulk of this feature set, the two TVs are functionally identical — both are full smart TVs with AirPlay, Google Assistant, voice commands, smartphone remote support, USB recording, and a matching 0.5W standby draw. The one-year warranty is also the same on both sides.

The only differentiator in this group is smart home ecosystem reach. The LG adds Amazon Alexa compatibility, which the TCL lacks. For users already embedded in an Alexa household — smart lights, plugs, thermostats, routines — having native Alexa on the TV means the display can participate directly in those automations and respond to the same voice ecosystem without a workaround. The TCL's Google Assistant support covers similar ground for Google Home users, but households running Alexa as their primary assistant will find the LG integrates more naturally.

This is a narrow but real advantage for the right user. The LG 75QNED85AUA edges ahead in this group strictly on the basis of broader voice assistant coverage — but only meaningfully so for Alexa households. For Google-centric or assistant-agnostic users, the two TVs are effectively tied here.