Samsung QN42S90FAE 42" VS Xiaomi TV A 2026 43"

The most fundamental difference here is panel technology. The Samsung QN42S90FAE uses an OLED/AMOLED panel, where each pixel produces its own light and can switch off completely, delivering true blacks and virtually infinite contrast. The Xiaomi TV A 2026 relies on LED-backlit LCD, where a backlight illuminates the entire screen — a technology that simply cannot match OLED for contrast depth or local dimming precision. In everyday viewing, this gap is most visible in dark scenes, where the Samsung will show near-perfect shadow detail while the Xiaomi may exhibit backlight blooming around bright objects.

The refresh rate gap is equally significant. The Samsung's 144Hz panel versus the Xiaomi's 60Hz means noticeably smoother motion in sports, action films, and especially gaming, where higher frame rates translate directly to reduced blur and input lag. For a viewer who primarily watches standard broadcast content this matters less, but for gaming or high-frame-rate streaming it is a meaningful real-world advantage. On HDR support, the Samsung additionally covers HDR10+ — which adds dynamic metadata for scene-by-scene tone mapping — while the Xiaomi tops out at HDR10 with static metadata. Neither supports Dolby Vision. Both share identical 3840 x 2160 resolution, 10-bit color depth, 1070 million colors, anti-reflection coating, an ambient light sensor, and full 178° viewing angles in both directions.

The Samsung QN42S90FAE has a clear and substantial advantage in this group. Its OLED panel and 144Hz refresh rate address the two most impactful display qualities — contrast and motion clarity — in ways the Xiaomi's LCD panel at 60Hz structurally cannot match, regardless of the similar pixel counts and color depth figures the two share.

Both TVs share a solid connectivity foundation — HDMI 2.1, matching Wi-Fi standards (Wi-Fi 4 and Wi-Fi 5), a wired RJ45 port, Miracast support, and identical DVB tuner coverage. Where they diverge is in the quantity and variety of ports. The Samsung offers 4 HDMI ports and 3 USB ports, versus the Xiaomi's 3 HDMI and a single USB port. For users with multiple devices — a soundbar, game console, streaming stick, and Blu-ray player — the Samsung's extra HDMI and USB ports reduce the need for switchers or unplugging devices entirely.

Bluetooth tells a smaller but still relevant story. The Samsung's Bluetooth 5.3 versus the Xiaomi's Bluetooth 5.0 brings incremental improvements in connection stability and power efficiency, which matters most for wireless headphones or speakers used over extended periods. One point in the Xiaomi's favor: it includes a 3.5mm audio jack, which the Samsung omits entirely — a practical outlet for users who want to connect wired headphones directly to the TV without routing through a separate device.

Overall, the Samsung QN42S90FAE holds the edge in connectivity. More HDMI and USB ports plus a newer Bluetooth version give it greater flexibility for complex home setups. The Xiaomi's headphone jack is a genuine convenience for simpler use cases, but it does not offset the Samsung's broader port advantage for most living-room configurations.

Shared ground here includes stereo speakers, Dolby Audio, Digital Out, and full HDMI ARC/eARC support on both — the latter being important for users who want to pass high-quality audio to a soundbar with a single cable while retaining remote control functionality. Neither TV includes SRS TheaterSound HD or Dolby Virtual processing.

The two meaningful differentiators are Dolby Atmos and the presence of a subwoofer, both exclusive to the Samsung. Dolby Atmos decoding allows the Samsung to process object-based spatial audio from supported streaming content and Blu-ray discs, creating a more dimensional soundstage than standard stereo. The built-in subwoofer adds dedicated low-frequency reproduction, which typically produces more body and impact in movie soundtracks and music without requiring an external speaker. The Xiaomi, limited to Dolby Audio without Atmos, handles standard stereo and surround formats but cannot decode the height and spatial layers that Atmos content carries.

The Samsung QN42S90FAE is the clear winner in this group. Dolby Atmos support and an integrated subwoofer give it a meaningfully richer out-of-the-box audio experience — particularly relevant for users who plan to rely primarily on the TV's built-in speakers rather than a dedicated external audio system.

Despite being within roughly an inch of each other in screen size, these two TVs differ substantially in physical form. The Samsung QN42S90FAE is significantly slimmer at 39.5 mm thick compared to the Xiaomi's 72 mm — nearly half the depth. This is a direct consequence of their panel technologies: OLED panels require no backlight assembly, allowing for much thinner chassis designs. The practical result is a TV that sits far less obtrusively on a stand or against a wall.

The weight gap is equally striking. At 3,946 g, the Samsung is roughly 2 kg lighter than the Xiaomi's 6,000 g. That difference is most relevant during installation — particularly for wall mounting, where a lighter panel reduces stress on the mounting hardware and makes single-person installation more manageable. Both TVs support VESA mounting, so neither has an inherent advantage there in terms of compatibility.

For design and form factor, the Samsung holds a clear advantage. Its dramatically thinner profile and lower weight make it easier to install, more flexible for tight spaces, and more likely to blend unobtrusively into a room — all without any trade-off in footprint relative to the similarly sized Xiaomi.

Functionally, these two TVs overlap heavily. Both include a built-in smart platform, AirPlay, Google Assistant, voice commands, smartphone remote support, USB recording, sleep timer, child lock, and identical standby consumption of 0.5W. Warranty periods are also the same at one year. For the majority of smart TV use cases, the feature set is effectively equivalent.

Two differentiators are worth noting. The Samsung adds Alexa compatibility, which is meaningful for households already embedded in Amazon's ecosystem — it allows the TV to participate in Alexa routines and respond to voice commands through Echo devices. The Samsung also includes a rechargeable remote control, eliminating the recurring cost and inconvenience of replacing disposable batteries. The Xiaomi, lacking both, uses a conventional battery-powered remote and is limited to Google Assistant among the major voice platforms. On power consumption, the Xiaomi draws a marginally lower 75W during operation versus the Samsung's 80W, though the real-world energy cost difference at typical viewing hours is negligible.

The Samsung QN42S90FAE has a modest edge here. Alexa support broadens its smart home integration options, and the rechargeable remote is a small but genuinely practical convenience. Neither advantage is transformative on its own, but together they tip the balance toward the Samsung for users who value ecosystem flexibility and daily usability details.