Samsung QN100QN80FF 100" VS TCL 75QM5K 75"

Both the Samsung QN100QN80FF and the TCL 75QM5K share the same fundamental panel architecture — QLED Mini-LED LCD — and an identical resolution of 3840 x 2160 at 144Hz with 10-bit color depth and 1.07 billion colors. In practice, this means both sets are built for high-motion clarity and wide color volume, and neither has a structural advantage in terms of raw panel technology or refresh capability.

The most consequential divergence lies in three areas. First, screen size: the Samsung measures 99.5″ versus the TCL's 74.5″, which is not a minor gap — it translates to a dramatically larger viewing experience and dictates optimal seating distance. Second, because both TVs share the same 4K resolution, the smaller TCL achieves a noticeably higher pixel density of 59 ppi versus the Samsung's 44 ppi, meaning the TCL will appear sharper up close, while the Samsung's lower ppi only becomes a non-issue at the greater viewing distances its size demands. Third, on HDR format support, the TCL holds an edge by adding Dolby Vision — a dynamically metadata-driven format widely used on streaming platforms — which the Samsung lacks entirely, limiting the Samsung to HDR10, HDR10+, and HLG.

For gaming specifically, the Samsung counters with a broader adaptive sync stack: AMD FreeSync Premium Pro (which includes HDR and low-framerate compensation support) compared to the TCL's basic AMD FreeSync only — a meaningful advantage for variable-rate gaming on compatible hardware. Overall, neither product dominates cleanly: the TCL 75QM5K has the edge in pixel sharpness and Dolby Vision compatibility, while the Samsung QN100QN80FF wins on sheer screen real estate and gaming-grade sync features. The right choice depends primarily on room size and use case.

At the foundation, both TVs share the same core connectivity framework: HDMI 2.1, Wi-Fi 5, Bluetooth, a single Ethernet port, and Miracast support. HDMI 2.1 is the critical standard here — it enables 4K at 144Hz passthrough and features like Variable Refresh Rate from external sources such as gaming consoles and PCs, so both sets are equally equipped on that front.

Where the Samsung QN100QN80FF pulls ahead is in port count. It offers 4 HDMI ports versus the TCL's 3, and 2 USB ports against the TCL's 1. On a flagship 100″ display likely to anchor a complex home theater or gaming setup, those extra ports carry real practical weight — connecting a soundbar, multiple consoles, a streaming stick, and a PC simultaneously without a switch becomes far more manageable. The additional USB port also matters for those who use TVs to play local media files.

The TCL 75QM5K offers no offsetting connectivity advantage in this group. Both sets omit a 3.5mm headphone jack and external memory slots, so those absences are a wash. The Samsung QN100QN80FF holds a clear, if modest, edge in connectivity purely on the basis of having more ports available for real-world device juggling.

Across every audio specification provided, the Samsung QN100QN80FF and the TCL 75QM5K are a complete match. Both include built-in stereo speakers with a subwoofer, support Dolby Atmos and Dolby Audio, offer Digital Out, and implement both HDMI ARC and eARC. The presence of eARC is worth highlighting — unlike standard ARC, eARC carries enough bandwidth for lossless audio formats like Dolby TrueHD and DTS-HD Master Audio from a connected soundbar or AV receiver, making it the preferred handshake for a high-quality external audio setup.

The onboard subwoofer on both sets suggests each manufacturer is targeting fuller low-end reproduction without external hardware, though the provided specs give no wattage or driver configuration data to differentiate the two in that regard. What can be said is that the audio feature set on paper is genuinely identical — there is no differentiator to surface.

This group is an unambiguous tie. Buyers prioritizing audio should look beyond these specs to independent sound output measurements, as nothing in the provided data gives either the Samsung QN100QN80FF or the TCL 75QM5K an advantage here.

Size difference is the defining story of this group, and it goes well beyond the screen diagonal. The Samsung QN100QN80FF spans 2230 mm wide and stands 1272.5 mm tall, occupying a total volume nearly twice that of the TCL 75QM5K at roughly 165,700 cm³ versus 89,700 cm³. In practical terms, the Samsung demands serious advance planning — wall clearance, floor reinforcement if stand-mounted, and doorway clearance during installation all become genuine logistical concerns at this scale.

Weight compounds this further. The Samsung comes in at 27,352 g (approximately 60 lbs) against the TCL's 23,496 g (about 52 lbs). While neither is light, the Samsung's extra mass means wall-mounting will typically require professional installation and a stud-rated heavy-duty bracket. Notably, both sets are comparably thin — 58.4 mm versus 55.9 mm — so depth profile is essentially a non-factor in placement decisions. Both also support VESA mounting, preserving flexibility for either wall or stand configurations.

One understated differentiator is operating temperature range: the Samsung tolerates up to 40 °C and as low as 10 °C, while the TCL caps at 35 °C and can operate from 5 °C. This gives the Samsung a slight edge for warmer environments such as sun-exposed rooms, while the TCL handles colder ambient conditions marginally better. Overall, the TCL 75QM5K is the more manageable install by a meaningful margin — the Samsung's scale is a feature for those who need it, but a real constraint for those who don't.

Rarely does a feature group land this decisively: every single specification in this category is identical across the Samsung QN100QN80FF and the TCL 75QM5K. Both run a built-in smart TV platform, support AirPlay, integrate with Google Assistant and Alexa, enable smartphone remote control, and offer USB recording — a useful feature for capturing live broadcasts directly to an external drive without a separate recorder.

The shared omission of Apple HomeKit/Siri compatibility is worth flagging for users embedded in the Apple ecosystem, as neither set can be natively controlled through the Home app or Siri automations. Beyond that, both draw an identical 0.5W in standby and carry a 1-year warranty, leaving no functional or ownership cost distinction to draw between them.

This group is a straightforward tie. The feature sets are not just similar — they are point-for-point equivalent based on the provided data. Buyers for whom smart features, voice assistant breadth, or warranty coverage are deciding factors will find no basis for differentiation here and should weigh the other specification groups instead.