Samsung QN85Q8FAAF 85" VS Samsung QN85QN70FAF 85"

At the foundation, both the QN85Q8FAAF and the QN85QN70FAF share an identical panel specification: a 84.5″ 4K (3840 x 2160) QLED LCD display at 52 ppi, with a 10-bit color pipeline rendering 1.07 billion colors, a 144Hz refresh rate, and full 178° viewing angles in both directions. HDR support is also a perfect match — both carry HDR10, HDR10+, and HLG, while neither supports Dolby Vision.

The two meaningful differentiators lie in backlighting technology and adaptive sync compatibility. The QN85QN70FAF uses a Mini-LED backlight, which enables a significantly higher number of local dimming zones compared to the conventional LED backlight in the QN85Q8FAAF. In practice, this translates to deeper blacks, more precise brightness control in high-contrast scenes, and better HDR punch — a tangible picture quality advantage, especially in dark-room viewing. On the gaming front, the QN85QN70FAF also adds Nvidia G-Sync and AMD FreeSync Premium Pro on top of standard FreeSync Premium, making it compatible with a broader range of GPUs and enabling variable refresh rate with HDR — something the QN85Q8FAAF cannot deliver.

The QN85QN70FAF holds a clear edge in this category. Its Mini-LED backlighting is a genuine upgrade in display quality, not just a spec checkbox, and its wider adaptive sync ecosystem makes it the stronger choice for both cinephiles and gamers. The QN85Q8FAAF is competitive on paper but falls behind on the two specs that matter most for real-world performance differentiation.

Connectivity is one area where there is simply nothing to separate these two televisions — every single spec is a perfect match. Both offer 4 HDMI 2.1 ports, which is the current gold standard for modern home theater setups, supporting 4K at 120Hz and full bandwidth for next-gen consoles and PC graphics cards without any compromise. The 2 USB ports and single RJ45 ethernet port round out the wired side identically.

On the wireless front, both televisions top out at Wi-Fi 5 (802.11ac) — a capable standard for high-bandwidth streaming but not the latest Wi-Fi 6/6E generation. Bluetooth 5.3 is present on both, ensuring reliable, low-latency connections to soundbars, headphones, and other peripherals. Miracast is also supported on each, enabling screen mirroring from compatible devices without additional hardware.

This category is an unambiguous tie. Buyers prioritizing connectivity alone will find zero differentiation between the QN85Q8FAAF and the QN85QN70FAF — the decision should rest entirely on the specs where the two models do diverge.

Audio is another category where the two televisions are completely identical. Both deliver 2 x 10W of stereo output — a modest but typical power figure for built-in TV speakers at this screen size. More relevant than raw wattage is the format support: both carry Dolby Atmos, Dolby Audio, Dolby Digital, and Dolby Digital Plus, covering the full Dolby ecosystem for immersive audio decoding from streaming services and physical media.

For users connecting external audio equipment, both models include HDMI ARC and eARC — the latter being particularly significant, as eARC carries enough bandwidth to pass through lossless audio formats like Dolby TrueHD and DTS-HD Master Audio to a compatible soundbar or AV receiver. This makes the built-in speaker output largely a secondary concern for serious home theater setups, where an external audio system would typically take over regardless.

With zero differences across every audio specification, this group is a complete tie. Neither the QN85Q8FAAF nor the QN85QN70FAF offers any audio advantage over the other — the choice between them should be driven by the display and other differentiating categories.

Footprint-wise, these two televisions are nearly indistinguishable — width and height differ by just a couple of millimeters, and both support VESA mounting. The only marginal physical difference is a 1mm reduction in thickness on the QN85QN70FAF (26.9mm vs 27.9mm), which is imperceptible in practice.

The one figure that demands attention, however, is weight. The QN85Q8FAAF comes in at 41,322g (roughly 91 lbs), while the QN85QN70FAF weighs just 19,187g (approximately 42 lbs) — less than half. For an 85-inch television, this is a dramatic difference. Wall mounting, repositioning, or even delivery and installation become significantly more manageable with the lighter set. A two-person installation that might be straightforward with the QN85QN70FAF could require additional help or professional mounting with the QN85Q8FAAF.

The QN85QN70FAF holds a clear advantage in this category purely on the basis of its weight. For buyers planning a wall mount or anticipating any need to move the display, the roughly 22kg difference is practically significant and should not be overlooked.

The smart feature set is essentially identical across both models — AirPlay, Google Assistant, Alexa, USB recording, smartphone remote support, and a full suite of convenience features are present on each. Neither supports Siri/Apple HomeKit, so Apple-ecosystem households will find the same limitation on both sets.

Two practical differences do emerge. The QN85Q8FAAF ships with a rechargeable remote control, sparing the user from ever replacing batteries — a small but genuinely appreciated quality-of-life advantage over time. On the other hand, the QN85QN70FAF draws notably less power at 235W during operation versus 265W for the QN85Q8FAAF. That 30W gap may seem minor, but for a television used several hours daily it adds up to a measurable difference in annual electricity costs.

These two advantages effectively trade off against each other, making this category close to a wash for most buyers. Those who dislike battery maintenance will favor the QN85Q8FAAF, while those conscious of long-term running costs will lean toward the QN85QN70FAF. Neither difference is significant enough on its own to be a deciding factor, so this group is best considered a near tie.