Samsung QN77S90FAF 77" VS Sony Bravia K-65XR80M2 65"

Both the Samsung QN77S90FAF and the Sony Bravia K-65XR80M2 share the same fundamental display DNA: OLED panels running at 4K (3840 x 2160) resolution with 10-bit color depth and 1.07 billion colors, wide 178° viewing angles in both directions, anti-reflection coatings, and ambient light sensors. At this level, both panels deliver the core OLED promise — per-pixel light control, true blacks, and exceptional contrast — so neither has a structural advantage in panel technology.

The most meaningful differentiators emerge in size, sharpness, and motion handling. The Samsung's 76.8″ screen versus the Sony's 64.5″ is a significant real-world size gap — roughly 19% more screen area — which matters for immersion in large rooms. However, the smaller Sony panel actually achieves a higher pixel density of 68 ppi versus the Samsung's 57 ppi, meaning the Sony's image will appear marginally sharper up close at the same viewing distance. On motion, the Samsung's 144Hz refresh rate edges out the Sony's 120Hz, which is relevant for high-frame-rate gaming and very fluid motion — though the gap is modest for everyday TV viewing.

The HDR ecosystem split is the sharpest decision point: the Samsung supports HDR10+ but not Dolby Vision, while the Sony supports Dolby Vision but not HDR10+. In practice, Dolby Vision has broader adoption across streaming platforms (Netflix, Disney+, Apple TV+), giving the Sony a slight edge in HDR content compatibility for most users. Taken together, the Samsung holds the advantage in raw screen size and refresh rate, making it the stronger choice for large-room home theater setups and gaming. The Sony counters with superior pixel density and better HDR format coverage, suiting viewers who prioritize image precision and streaming versatility — and who are working within a tighter space.

The wired connectivity foundation is essentially identical: both TVs offer 4 HDMI 2.1 ports, a single RJ45 ethernet port, and Miracast support — so neither has a leg up when it comes to hooking up consoles, soundbars, or a network cable. Where things diverge is in wireless and USB.

The Sony Bravia K-65XR80M2 pulls ahead on Wi-Fi, supporting Wi-Fi 6 and Wi-Fi 6E (802.11ax) in addition to the older standards both TVs share. Wi-Fi 6/6E delivers meaningfully better throughput, lower latency, and reduced congestion in dense wireless environments — a real advantage for 4K streaming and future-proofing in homes with many connected devices. The Samsung QN77S90FAF tops out at Wi-Fi 5 (802.11ac), which is capable but increasingly dated. Both share Bluetooth 5.3, so wireless peripherals and audio devices are on equal footing.

The Samsung does reclaim one point with 3 USB ports versus the Sony's 2, offering a bit more flexibility for simultaneously connecting storage drives, keyboards, or other peripherals without needing a hub. Still, that is a minor convenience advantage compared to the Sony's Wi-Fi generational lead. Overall, the Sony Bravia K-65XR80M2 holds the clear connectivity edge, primarily due to its superior wireless standard — a meaningful differentiator for anyone relying on Wi-Fi for streaming or who wants a setup that will remain relevant as Wi-Fi 6E becomes more prevalent.

Across every single audio specification provided, the Samsung QN77S90FAF and the Sony Bravia K-65XR80M2 are a perfect match. Both carry Dolby Atmos support, built-in subwoofers, stereo speakers, and the full Dolby codec stack — Dolby Digital, Dolby Digital Plus, and Dolby Audio. For everyday use, this means both TVs are equipped to decode and reproduce object-based surround sound from streaming services and Blu-ray content without any external processor.

On the external audio side, both offer HDMI ARC and eARC, which is the more important of the two — eARC carries enough bandwidth to pass lossless audio formats like Dolby TrueHD to a compatible soundbar or AV receiver, keeping the signal chain clean without optical cable limitations. Neither TV includes a 3.5mm headphone jack (confirmed in connectivity specs), so eARC and digital out are the primary pathways to external audio systems, and both products handle this identically.

This group is an unambiguous tie. There is no differentiator between the two TVs in audio specifications — a buyer who prioritizes built-in sound capabilities or external audio compatibility will find no reason to choose one over the other based on this data alone.

Size differences are expected given these are a 77″ and a 65″ panel respectively, but the weight figures tell a more surprising story. The Samsung QN77S90FAF, despite being the larger TV, weighs just 16.6 kg — compared to the Sony Bravia K-65XR80M2's 22.9 kg. That is roughly 38% heavier for the smaller screen, a gap that has real consequences for wall mounting, furniture placement, and single-person installation. Lighter panels put less stress on wall brackets and make repositioning significantly more manageable.

The Sony does win on one design dimension: at 34 mm thick, it is noticeably slimmer than the Samsung's 44.9 mm. For wall-mounted setups where depth matters — particularly if the goal is a near-flush look against the wall — the Sony sits closer to the surface. Both TVs support VESA mounting, so neither locks the user into a proprietary stand solution.

On balance, the Samsung QN77S90FAF holds the more practical design advantage for most installation scenarios. Its dramatically lower weight makes handling and mounting far easier, and that edge outweighs the Sony's slimmer profile for the majority of buyers. The Sony's thinness is a genuine aesthetic plus, but only if weight is not a constraint in the installation.

From a smart platform and ecosystem standpoint, these two TVs are functionally identical. Both support AirPlay, Google Assistant, Alexa, smartphone remote control, rechargeable remotes, and USB recording — and neither supports Siri/Apple HomeKit. For virtually every mainstream smart home setup, a buyer will encounter no capability gap between them on this front.

The one figure that breaks the symmetry decisively is operating power consumption. The Samsung QN77S90FAF draws 182W under normal use, while the Sony Bravia K-65XR80M2 consumes 397W — more than twice as much, despite being the smaller screen. Over a household averaging four hours of TV daily, that gap translates to a meaningful difference in annual electricity costs. Standby consumption is identical at 0.5W for both, so the disparity is purely in active use.

Given that every smart feature, voice assistant, and convenience capability is matched spec-for-spec, the Samsung QN77S90FAF holds a clear advantage in this group on the strength of its dramatically lower power draw. For buyers who factor running costs into a purchase decision — or who are environmentally conscious — the Samsung's efficiency is a significant and concrete differentiator that the Sony cannot offset with features alone.