LG 86QNED82AUA 86" VS Samsung QN85QN70FAF 85"

Both the LG 86QNED82AUA and the Samsung QN85QN70FAF share a strong display foundation: native 4K (3840 x 2160) resolution, 10-bit color depth, 1.07 billion colors, Mini-LED backlighting, and identical 178º horizontal and vertical viewing angles. In practice, this means both panels can reproduce a wide, nuanced color range with strong off-axis visibility, and the Mini-LED architecture gives both sets improved local dimming and contrast compared to standard edge-lit LCD. The LG edges out a marginally larger physical screen at 86.4″ versus Samsung's 84.5″, a difference most viewers will not notice in a living room setting.

The most consequential differentiator in this group is refresh rate. The LG is capped at 60Hz, while the Samsung supports up to 144Hz. For pure TV viewing this gap is largely invisible, but for gaming or fast-motion sports content, 144Hz translates into dramatically smoother motion and significantly reduced motion blur. This advantage is reinforced by Samsung's adaptive sync support — it is compatible with Nvidia G-Sync, AMD FreeSync Premium, and AMD FreeSync Premium Pro, whereas the LG supports only basic AMD FreeSync. The Samsung's broader sync ecosystem makes it meaningfully more versatile for PC and console gaming. Samsung also adds HDR10+ support (dynamic HDR metadata for scene-by-scene tone mapping), a format the LG lacks; both share HDR10 and HLG, and neither supports Dolby Vision.

For a viewer whose primary use is cinematic TV watching, the two sets are closely matched and the LG's slightly larger screen could tip the scales. However, for anyone who intends to game or wants a more future-proof display, the Samsung holds a clear overall edge in this group, driven by its superior refresh rate, richer adaptive sync compatibility, and HDR10+ support.

On the shared fundamentals, both TVs are well-equipped: HDMI 2.1 ports for full 4K high-refresh-rate passthrough, dual-band Wi-Fi up to Wi-Fi 5 (802.11ac), Bluetooth, a wired RJ45 ethernet port, and Miracast wireless display mirroring. Neither offers a 3.5mm headphone jack, external memory slot, or legacy video connectors, so those omissions are a non-issue for comparison purposes.

The meaningful gaps emerge in port count and Bluetooth revision. The Samsung provides 4 HDMI ports versus the LG's 3, and 2 USB ports versus the LG's single USB port. In a modern home theater setup — where a soundbar, game console, streaming stick, and Blu-ray player may all compete for HDMI inputs — an extra HDMI port and an additional USB slot are genuinely practical advantages that reduce the need for a separate HDMI switch. On the wireless side, the Samsung's Bluetooth 5.3 is a newer revision than the LG's Bluetooth 5.0; while both are broadly compatible, 5.3 brings incremental improvements in connection stability and energy efficiency, which can matter for wirelessly paired headphones or audio equipment used over long sessions.

Neither set breaks new ground on Wi-Fi — Wi-Fi 6 or higher is absent from both — so neither has an edge there. Overall, the Samsung holds a modest but practical connectivity advantage, primarily through its additional HDMI and USB ports, which directly affect day-to-day usability in a multi-device setup.

Across every audio specification in this group, the LG 86QNED82AUA and the Samsung QN85QN70FAF are in complete lockstep. Both support Dolby Atmos, Dolby Digital, Dolby Digital Plus, and Dolby Audio, covering the most widely used immersive and surround audio formats available on streaming platforms and physical media today. Dolby Atmos in particular is worth highlighting — it enables object-based spatial audio that, when paired with a capable soundbar or AV receiver, creates a genuinely three-dimensional soundstage.

Both TVs also include HDMI ARC and eARC, which is the more important of the two for audiophiles. While standard ARC is sufficient for compressed formats, eARC carries the full bandwidth needed to pass lossless audio — such as Dolby TrueHD with Atmos — directly to an external sound system. Neither set includes a built-in subwoofer, which is typical at this product tier and simply underscores the expectation that most buyers will pair these screens with external audio equipment.

With no differentiating data points anywhere in this group, the audio comparison is a complete tie. Buyers should look to other specification groups — or to real-world speaker wattage and tuning details not captured here — to distinguish the two sets on sound.

Despite being positioned in the same screen-size class, the physical design specs of these two TVs diverge sharply. The most striking gap is weight: the LG 86QNED82AUA tips the scales at 32,387 g (roughly 71 lbs), while the Samsung QN85QN70FAF comes in at 19,187 g (roughly 42 lbs) — nearly 40% lighter. For a single-person installation or a wall mount rated for a specific load, that difference is far from trivial. Lighter sets are easier to maneuver during installation and place less long-term stress on wall mounts and furniture.

Thickness tells a similar story. The LG measures 50.8 mm deep, while the Samsung is a considerably slimmer 26.9 mm — nearly half the depth. In a wall-mount scenario especially, the Samsung will sit noticeably flatter and more flush against the wall, which matters both aesthetically and practically in tighter spaces. The resulting volume difference — roughly 108,456 cm³ for the LG versus 55,581 cm³ for the Samsung — reflects just how much more compact the Samsung chassis is overall, despite the two sets being within about 25mm of each other in width and height.

Both support VESA mounting, so neither has an edge on installation compatibility. Overall, however, the Samsung holds a clear design advantage in this group: its dramatically lower weight and slimmer profile make it easier to install, less demanding on mounting hardware, and better suited for spaces where a low-profile aesthetic is a priority.

The smart feature sets of these two TVs are remarkably well-matched. Both offer built-in smart TV platforms, AirPlay, Google Assistant, Alexa voice control, smartphone remote support, USB recording, and standard convenience features like sleep timer and child lock. Neither supports Siri or Apple HomeKit, and neither ships with a rechargeable remote — so those are shared limitations rather than differentiators. For the vast majority of smart home setups, both TVs will integrate equally well.

The one concrete differentiator in this group is operating power consumption. The LG draws 181W during use, while the Samsung consumes 235W — roughly 30% more. Over extended daily use, that gap compounds meaningfully. Assuming five hours of use per day at an average U.S. electricity rate, the Samsung would cost noticeably more to run annually. Standby consumption is identical at 0.5W for both, and warranty coverage is equal at one year on each.

Since every smart feature is shared and the only numerical difference favors the LG, the LG 86QNED82AUA holds a modest edge in this group purely on the basis of lower power consumption. It is not a dramatic advantage, but for energy-conscious buyers or those who watch several hours daily, the LG's efficiency is a tangible long-term benefit.