TVs / TCL QM6K vs LG QNED84B (55-inch)
TCL QM6K vs LG QNED84B (55-inch)
TCL QM6K
TCL's budget QD-Mini LED — carried over from 2025 as its entry Mini LED option for 2026.
Wins overall by 0.2 points
Quick Verdict
Too close to call on score alone: 0.2 points separate them. TCL's budget QD-Mini LED — carried over from 2025 as its entry Mini LED option for 2026. The LG QNED84B (55-inch) answers with a different set of strengths, so let the categories below decide it.
The TCL QM6K and LG QNED84B (55-inch) are both closely matched TV models, and the TCL QM6K is $200 cheaper than the LG QNED84B (55-inch) ($529.99 vs $729.99). On Smart Platform, the LG QNED84B (55-inch) leads (8.8 vs 8.0/10) — OS responsiveness, app ecosystem, and voice assistant support. On Brightness & HDR, the TCL QM6K leads (8.2 vs 7.5/10) — peak nits and HDR format support for highlight detail. On Value, the TCL QM6K leads (9.0 vs 8.3/10) — performance and features relative to price. Overall, the TCL QM6K scores 7.9/10 across our 8 scoring categories versus 7.7/10 for the LG QNED84B (55-inch), though the gap is close enough that your specific use case should decide it. Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | TCL QM6K | LG QNED84B (55-inch) |
|---|---|---|
| Price | $529.99 | $729.99 |
| Release Year | 2025 | 2026 |
| Screen Size (in) | 65 | 55 |
| Panel Type | QD-Mini LED (Halo Control System, LD500 Precise Dimming) | QNED evo Mini LED |
| Resolution | 3840x2160 (4K UHD) | 3840x2160 (4K UHD) |
| Peak Brightness (nits) | 3000 | Not independently confirmed |
| Refresh Rate (Hz) | 144 | Not independently confirmed |
| Processor | AIPQ Processor PRO | Alpha 8 AI Processor Gen 3 |
| HDMI 2.1 Ports (ports) | Not independently confirmed | Not independently confirmed |
| HDR Formats | Dolby Vision IQ, HDR10+, HDR10, HLG | Dolby Vision, HDR10, HLG |
| Smart Platform | Google TV | webOS 26 |
| Variable Refresh Rate (VRR) | Yes | Yes |
| Built-in Audio System | Onkyo-tuned speaker system | Not officially specified |
| Built-in Dolby Atmos | Yes | Yes |
| Warranty | 12 months | 12 months |
| Colors | Black | Black |
Category Scores
Picture Quality
The TCL QM6K is marginally ahead, 7.8 to 7.6. A gap this small rarely decides a purchase on its own, though it counts if panel technology, contrast, and color accuracy is your priority.
Brightness & HDR
The TCL QM6K leads clearly here, 8.2 against 7.5 — a 0.7-point margin on peak nits and HDR format support for highlight detail. If that is what you are buying for, the LG QNED84B (55-inch) does not close the gap elsewhere.
Gaming Features
The TCL QM6K leads clearly here, 8.4 against 7.8 — a 0.6-point margin on refresh rate, VRR, input lag, and console support. If that is what you are buying for, the LG QNED84B (55-inch) does not close the gap elsewhere.
Smart Platform
The LG QNED84B (55-inch) leads clearly here, 8.8 against 8.0 — a 0.8-point margin on OS responsiveness, app ecosystem, and voice assistant support. If that is what you are buying for, the TCL QM6K does not close the gap elsewhere.
Built-in Sound
The TCL QM6K leads clearly here, 7.0 against 6.5 — a 0.5-point margin on onboard speaker power, clarity, and Dolby Atmos support. If that is what you are buying for, the LG QNED84B (55-inch) does not close the gap elsewhere.
Design & Build
The LG QNED84B (55-inch) is marginally ahead, 7.5 to 7.3. A gap this small rarely decides a purchase on its own, though it counts if panel thinness, bezels, stand/mount options, and finish is your priority.
Connectivity
The TCL QM6K is marginally ahead, 7.8 to 7.5. A gap this small rarely decides a purchase on its own, though it counts if HDMI 2.1 port count and other I/O for consoles and soundbars is your priority.
Value
The TCL QM6K leads clearly here, 9.0 against 8.3 — a 0.7-point margin on performance and features relative to price. If that is what you are buying for, the LG QNED84B (55-inch) does not close the gap elsewhere.
Best For
Choose the TCL QM6K if…
- • Brightness & HDR matters most to you — the TCL QM6K scores 8.2/10 here (peak nits and HDR format support for highlight detail).
- • Value matters most to you — the TCL QM6K scores 9.0/10 here (performance and features relative to price).
- • Gaming Features matters most to you — the TCL QM6K scores 8.4/10 here (refresh rate, VRR, input lag, and console support).
- • Built-in Sound matters most to you — the TCL QM6K scores 7.0/10 here (onboard speaker power, clarity, and Dolby Atmos support).
- • You want to spend less — it's $200 cheaper.
Choose the LG QNED84B (55-inch) if…
- • Smart Platform matters most to you — the LG QNED84B (55-inch) scores 8.8/10 here (OS responsiveness, app ecosystem, and voice assistant support).
Pros & Cons
TCL QM6K
Pros
- +Genuine QD-Mini LED at a genuinely budget price
- +Game Accelerator 288 and 144Hz native refresh punch well above its price for gaming
- +Onkyo-tuned audio and IMAX Enhanced certification are rare at this tier
- +New 50" size added for 2026, still sold alongside the newer QM7L/QM8L
Cons
- −Carried over from 2025 without a full refresh — TCL's newer SQD Mini LED tech is reserved for the QM7L/QM8L above it
- −Fewer local dimming zones than the QM7L/QM8L
- −HDMI 2.1 port count not independently confirmed
LG QNED84B (55-inch)
Pros
- +Entry point into LG's Alpha 8 AI Processor Gen 3 lineup for 2026
- +Same webOS 26 smart platform and Sports Portal as the flagship QNED90
- +Available across a wide size range up to 86"
- +AMD FreeSync Premium included even at this tier
Cons
- −No Dynamic QNED Color Pro or Precision Dimming Ultra — those stay on the QNED90/85 above it
- −Peak brightness, refresh rate, and HDMI 2.1 port count not independently confirmed
- −Fewer local dimming zones than the QNED85/90
- −LG's 2026 US QNED range is QNED92B and QNED84B only; this model was published under a 2025-era name that does not exist in the current US lineup and has been corrected
Shop by Need
FAQs
Is the TCL QM6K or LG QNED84B (55-inch) better overall?+
Based on our 8-category scoring, the TCL QM6K comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Smart Platform, the TCL QM6K or the LG QNED84B (55-inch)?+
The LG QNED84B (55-inch) scores higher on Smart Platform (8.8/10 vs 8.0/10) — OS responsiveness, app ecosystem, and voice assistant support.
Which is better for Brightness & HDR, the TCL QM6K or the LG QNED84B (55-inch)?+
The TCL QM6K scores higher on Brightness & HDR (8.2/10 vs 7.5/10) — peak nits and HDR format support for highlight detail.
Which is better for Value, the TCL QM6K or the LG QNED84B (55-inch)?+
The TCL QM6K scores higher on Value (9.0/10 vs 8.3/10) — performance and features relative to price.
Which is better for Gaming Features, the TCL QM6K or the LG QNED84B (55-inch)?+
The TCL QM6K scores higher on Gaming Features (8.4/10 vs 7.8/10) — refresh rate, VRR, input lag, and console support.
Is the TCL QM6K worth the price difference over the LG QNED84B (55-inch)?+
The TCL QM6K is the cheaper option at $529.99 versus $729.99. Whether the pricier model is "worth it" depends on how much you value its lead in Smart Platform.
Which is better suited to my use case?+
The TCL QM6K is the better fit if you mainly care about gaming. The LG QNED84B (55-inch) is the better fit for home-theater.
What's the warranty on the TCL QM6K vs the LG QNED84B (55-inch)?+
The TCL QM6K ships with a 12-month warranty; the LG QNED84B (55-inch) ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
TCL QM6K — $529.99
Premium Option
Roku Pro Series — $698.00
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.