LG 100QNED85AU 100" VS Samsung QN100QN80FF 100"

At the foundational level, these two 100-inch giants are remarkably aligned: both deliver 4K (3840 x 2160) resolution at 44 ppi, a 10-bit color pipeline rendering 1.07 billion colors, a 144Hz refresh rate, and a Mini-LED-backlit LCD panel. Both also share 178° horizontal and vertical viewing angles, anti-reflection coatings, and ambient light sensors — meaning neither has a structural edge in panel geometry or motion handling on paper.

The meaningful differences surface in panel technology and HDR ecosystem support. The Samsung QN100QN80FF adds a QLED quantum dot layer on top of its Mini-LED backlight, which typically translates to wider color volume and more saturated, accurate colors at high brightness — an advantage the LG 100QNED85AU lacks. On the HDR side, the Samsung also supports HDR10+ in addition to HDR10 and HLG, enabling scene-by-scene dynamic metadata for compatible content — whereas the LG is limited to the static-metadata HDR10 standard. Neither TV supports Dolby Vision, so that is a non-factor. For gamers, the Samsung extends its adaptive sync support to AMD FreeSync Premium Pro, which adds Low Framerate Compensation and HDR support for gaming — a step above the LG's FreeSync Premium certification.

The Samsung QN100QN80FF holds a clear display advantage. Its QLED layer, HDR10+ compatibility, and FreeSync Premium Pro certification collectively offer better color fidelity for cinephiles and a more capable gaming display pipeline — without any compensating win for the LG in this spec group. The LG's 0.8-inch larger physical screen is negligible at this size and viewing distance. Buyers prioritizing HDR quality and color volume should lean toward the Samsung.

Across most of the connectivity checklist, these two televisions are effectively identical: both offer 4x HDMI 2.1 ports, 2x USB ports, a single RJ45 ethernet jack, Bluetooth 5.3, and Miracast support. For a home theater setup, four HDMI 2.1 ports is a strong provision — each capable of handling 4K at 144Hz — so neither TV creates a bottleneck for multi-source configurations.

The one meaningful split is wireless networking. The LG 100QNED85AU supports Wi-Fi 6 (802.11ax) and Wi-Fi 6E, while the Samsung QN100QN80FF tops out at Wi-Fi 5 (802.11ac). In practice, Wi-Fi 6 delivers higher throughput, lower latency under network congestion, and better efficiency when multiple devices compete for bandwidth — all relevant in a busy modern household. Wi-Fi 6E goes further by adding access to the less-congested 6GHz band, which can significantly reduce interference in dense environments. For users with a Wi-Fi 6 or 6E router, the LG can leverage that infrastructure; the Samsung simply cannot.

The LG 100QNED85AU takes a clear edge in connectivity. Its Wi-Fi 6E support is the only differentiator in this group, but it is a consequential one — particularly for users who stream 4K content over Wi-Fi or operate in environments with heavy wireless traffic. The Samsung's Wi-Fi 5 ceiling is adequate in uncongested settings, but it leaves performance gains from modern routers untapped.

Audio is the rare category where these two televisions offer a completely identical feature set. Both include built-in stereo speakers with a subwoofer, support Dolby Atmos and Dolby Audio, and provide both HDMI ARC and eARC for external audio system integration. The presence of eARC is worth highlighting — it carries significantly more bandwidth than standard ARC, enabling lossless audio formats like Dolby TrueHD and DTS:X to pass through to a compatible soundbar or AV receiver without compression.

Neither television supports Dolby Virtual or SRS TheaterSound HD, so neither has a processing advantage for simulated surround effects from the built-in speakers. Digital optical output is present on both, which remains useful for connecting older audio equipment that lacks HDMI ARC compatibility.

This group is a dead tie. Every audio specification — from speaker configuration and codec support to output options — is shared identically between the LG 100QNED85AU and the Samsung QN100QN80FF. Audio hardware and processing should play no role in differentiating these two models for prospective buyers.

Width and height are virtually identical between these two sets, so footprint is a non-issue. The design story is dominated almost entirely by one staggering figure: weight. The LG 100QNED85AU weighs 68,084g (~68 kg / ~150 lbs), while the Samsung QN100QN80FF comes in at 27,352g (~27 kg / ~60 lbs) — meaning the LG is more than 2.5 times heavier than the Samsung. At 100 inches, neither television is easy to move, but that gap is operationally significant.

For wall mounting — supported via VESA on both models — the LG's weight places considerably greater demands on wall structure, mounting hardware, and the installation crew. Professional installation is already strongly recommended at this screen size, but the LG raises the stakes further in terms of load-bearing requirements. The Samsung's relative lightness also gives it a slight edge in volume (~144,738 cm³ for the LG vs ~165,727 cm³ for the Samsung is actually reversed here — the LG is slimmer at 50.8mm depth versus the Samsung's 58.4mm), meaning the LG sits closer to the wall despite weighing far more, likely reflecting denser internal componentry.

The Samsung QN100QN80FF holds a meaningful advantage in this category. Its dramatically lower weight simplifies logistics, installation, and long-term mounting safety — practical concerns that are easy to underestimate until delivery day. The LG's slimmer profile is a genuine but secondary benefit that does not offset the challenges posed by its mass.

Features is the second category in this comparison to produce a clean sweep tie. Every single specification — from smart platform and voice assistant compatibility to USB recording, standby power consumption, and warranty length — is shared identically by both televisions. Notable shared highlights include AirPlay support, compatibility with both Google Assistant and Alexa, and a lean 0.5W standby consumption. Neither TV supports Apple HomeKit or Siri, so iOS-centric smart home users face the same limitation on both sides.

The one feature worth contextualizing is USB recording, which allows users to record live broadcast content directly to an attached USB drive — a convenience that is increasingly rare to find explicitly confirmed on modern televisions, and both sets offer it. The identical 1-year warranty period means post-purchase support expectations should be equal for both buyers.

This group is a complete tie. There is no feature-based reason to favor one television over the other. Buyers invested in smart home ecosystems or specific voice assistant workflows will find neither model offers an advantage here — the decision should rest entirely on the differentiators surfaced in other specification groups.