TCL 98QM8K 98" VS TCL 98QM9K 98"

The TCL 98QM8K and TCL 98QM9K share an identical display foundation: both are 97.5″ QLED Mini-LED LCD panels running at a native 3840 x 2160 (4K UHD) resolution with a 144Hz refresh rate, 10-bit color depth, and support for 1.07 billion colors. They also match on every HDR front — HDR10, HDR10+, Dolby Vision, and HLG are all present on both — and share the same AMD FreeSync Premium Pro adaptive sync suite, anti-reflection coating, ambient light sensor, and a wide 178° viewing angle in both axes. For most practical purposes, these two panels start from a virtually indistinguishable baseline.

The sole measurable difference in the provided specs is pixel density: the QM8K registers at 45 ppi, while the QM9K comes in at 54 ppi — a roughly 20% increase. On a screen this large, both figures fall well below the threshold where individual pixels become visible at normal viewing distances (typically 8–12 feet for a 98″ TV). In practice, that gap is unlikely to produce a perceptible sharpness difference during everyday viewing, though the QM9K′s higher ppi could offer marginally crisper fine detail when content is viewed up close or when the screen is used as a monitor.

Based strictly on the data provided, the QM9K holds a narrow edge in pixel density, but given that both TVs share the same resolution, panel technology, HDR capabilities, and refresh rate, the real-world display experience will be nearly identical for the vast majority of users. The decision between them should hinge on specs outside this group rather than any meaningful display-level distinction.

Across most of the connectivity checklist, the QM8K and QM9K are identical: both offer 4 HDMI 2.1 ports — critical for running multiple 4K/120fps sources simultaneously — along with 2 USB ports, a dedicated RJ45 ethernet jack, Bluetooth 5.4, and Miracast wireless mirroring. That shared HDMI 2.1 lineup is particularly valuable for gaming households pairing the TV with current-gen consoles or high-end GPUs.

The one meaningful split comes down to Wi-Fi. The QM8K tops out at Wi-Fi 5 (802.11ac), while the QM9K adds Wi-Fi 6 (802.11ax) support. In practical terms, Wi-Fi 6 delivers higher throughput on congested networks, lower latency, and more efficient communication when multiple devices compete for bandwidth — a real advantage in a busy smart home. For users who rely on a wired ethernet connection, this difference evaporates entirely, but for those streaming over Wi-Fi in dense environments, it is a tangible upgrade.

The QM9K holds a clear connectivity edge solely due to its Wi-Fi 6 capability. Everything else — ports, Bluetooth version, mirroring support — is a dead heat. If your setup depends on wireless streaming or future-proofing against increasingly crowded home networks, the QM9K is the stronger choice here.

Both the QM8K and QM9K arrive with a well-rounded audio codec suite — Dolby Atmos, Dolby Audio, Dolby Digital Plus, DTS:X, and full HDMI ARC/eARC support are present on each. The inclusion of eARC is worth highlighting: it supports high-bandwidth audio formats like uncompressed Dolby Atmos and DTS:X over a single HDMI cable to a soundbar or receiver, making either TV a clean foundation for an external audio setup.

Where these two diverge is the built-in subwoofer. The QM8K includes one; the QM9K does not. A dedicated subwoofer in the TV chassis handles low-frequency reproduction — bass from action sequences, music, and cinematic sound design — without requiring an external speaker system. Its absence on the QM9K means that out of the box, the QM9K will deliver comparatively leaner bass response relying solely on its stereo speakers.

For users who plan to pair either TV with a soundbar or home theater system, the subwoofer difference is largely irrelevant since the external system takes over bass duties entirely. But for those who intend to rely on the TV's integrated audio, the QM8K holds a clear advantage in this group, offering a more complete standalone listening experience.

At 98 inches, neither the QM8K nor the QM9K is a light or compact installation — both weigh an identical 56,001 g (~123 lbs) and share the same 54.1 mm thickness and 1235.9 mm height. Wall-mounting will be an equally demanding two-person job for either model, and both support VESA mounting as a standard option. Their operating temperature ranges are also identical, so environmental placement considerations are a non-factor in choosing between them.

The only dimensional difference is a marginal one: the QM8K measures 2179.3 mm wide versus the QM9K's 2166.1 mm — a gap of just 13.2 mm, or roughly half an inch. This translates to a negligibly smaller overall volume for the QM9K. In practice, this difference is unlikely to affect furniture fit, wall bracket selection, or room placement decisions in any meaningful way.

From a design and physical footprint standpoint, these two TVs are effectively identical. The width delta is too small to influence any real-world installation decision, and weight, depth, height, and mounting compatibility are an exact match. This group offers no meaningful basis for choosing one over the other.

When it comes to smart features, the QM8K and QM9K are carbon copies of each other. Both run a full smart TV platform with Chromecast built-in and AirPlay support, meaning iPhone, iPad, Mac, and Android users can all cast or mirror content natively without additional hardware. Voice control is covered from multiple angles — Google Assistant and Amazon Alexa are both supported, though neither model is compatible with Siri or Apple HomeKit, which may matter to deeply invested Apple ecosystem users.

A few features stand out as genuinely useful for day-to-day ownership. USB recording allows users to record live broadcast content directly to an external drive — a practical addition for antenna users. Standby power consumption is a minimal 0.5W on both, which is negligible over time. Smartphone remote support means the physical remote is not the only control option, and both models carry the same 1-year warranty.

There is no differentiator to call out here — every single feature in this group is identical across both TVs. The QM8K and QM9K are perfectly tied on features, and this category provides no basis for choosing one over the other.