TVs / LG QNED84B (55-inch) vs LG QNED84B (100-inch)
LG QNED84B (55-inch) vs LG QNED84B (100-inch)
LG QNED84B (100-inch)
LG's 100" mid-flagship QNED — the QNED90's processor at cinematic scale.
Wins overall by 0.1 points
Quick Verdict
The LG QNED84B (100-inch) wins by 0.1 points, which is not enough to settle it. LG's entry 2026 QNED Mini LED — the Alpha 8 Gen 3 processor at a budget price. Pick on the specs that matter to you, not the overall score.
The LG QNED84B (55-inch) and LG QNED84B (100-inch) are both current-generation TV models, and the LG QNED84B (55-inch) is $3,270 cheaper than the LG QNED84B (100-inch) ($729.99 vs $3,999.99). On Value, the LG QNED84B (55-inch) leads (8.3 vs 6.5/10) — performance and features relative to price. On Picture Quality, the LG QNED84B (100-inch) leads (8.2 vs 7.6/10) — panel technology, contrast, and color accuracy. On Brightness & HDR, the LG QNED84B (100-inch) leads (8.0 vs 7.5/10) — peak nits and HDR format support for highlight detail. Overall, the LG QNED84B (100-inch) scores 7.8/10 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 | LG QNED84B (55-inch) | LG QNED84B (100-inch) |
|---|---|---|
| Price | $729.99 | $3999.99 |
| Release Year | 2026 | 2026 |
| Screen Size (in) | 55 | 100 |
| Panel Type | QNED evo Mini LED | QNED evo Mini LED |
| Resolution | 3840x2160 (4K UHD) | 3840x2160 (4K UHD) |
| Peak Brightness (nits) | Not independently confirmed | Not independently confirmed |
| Refresh Rate (Hz) | Not independently confirmed | Not independently confirmed (165Hz VRR and 330Hz Motion Booster are QNED90-exclusive per LG) |
| Processor | Alpha 8 AI Processor Gen 3 | Alpha 8 AI Processor Gen 3 |
| HDMI 2.1 Ports (ports) | Not independently confirmed | Not independently confirmed |
| HDR Formats | Dolby Vision, HDR10, HLG | Dolby Vision, HDR10, HLG |
| Smart Platform | webOS 26 | webOS 26 |
| Variable Refresh Rate (VRR) | Yes | Yes |
| Built-in Audio System | Not officially specified | Not officially specified |
| Built-in Dolby Atmos | Yes | Yes |
| Warranty | 12 months | 12 months |
| Colors | Black | Black |
Category Scores
Picture Quality
The LG QNED84B (100-inch) leads clearly here, 8.2 against 7.6 — a 0.6-point margin on panel technology, contrast, and color accuracy. If that is what you are buying for, the LG QNED84B (55-inch) does not close the gap elsewhere.
Brightness & HDR
The LG QNED84B (100-inch) leads clearly here, 8.0 against 7.5 — a 0.5-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 LG QNED84B (100-inch) is marginally ahead, 8.2 to 7.8. A gap this small rarely decides a purchase on its own, though it counts if refresh rate, VRR, input lag, and console support is your priority.
Smart Platform
The LG QNED84B (55-inch) and LG QNED84B (100-inch) are level here, at 8.8/10 each. OS responsiveness, app ecosystem, and voice assistant support is not what separates these two — look to the categories where the scores diverge.
Built-in Sound
The LG QNED84B (100-inch) 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 (100-inch) leads clearly here, 8.0 against 7.5 — a 0.5-point margin on panel thinness, bezels, stand/mount options, and finish. If that is what you are buying for, the LG QNED84B (55-inch) does not close the gap elsewhere.
Connectivity
The LG QNED84B (55-inch) and LG QNED84B (100-inch) are level here, at 7.5/10 each. HDMI 2.1 port count and other I/O for consoles and soundbars is not what separates these two — look to the categories where the scores diverge.
Value
The LG QNED84B (55-inch) leads clearly here, 8.3 against 6.5 — a 1.8-point margin on performance and features relative to price. If that is what you are buying for, the LG QNED84B (100-inch) does not close the gap elsewhere.
Best For
Choose the LG QNED84B (55-inch) if…
- • Value matters most to you — the LG QNED84B (55-inch) scores 8.3/10 here (performance and features relative to price).
- • You want to spend less — it's $3,270 cheaper.
Choose the LG QNED84B (100-inch) if…
- • Picture Quality matters most to you — the LG QNED84B (100-inch) scores 8.2/10 here (panel technology, contrast, and color accuracy).
- • Brightness & HDR matters most to you — the LG QNED84B (100-inch) scores 8.0/10 here (peak nits and HDR format support for highlight detail).
- • Built-in Sound matters most to you — the LG QNED84B (100-inch) scores 7.0/10 here (onboard speaker power, clarity, and Dolby Atmos support).
- • Design & Build matters most to you — the LG QNED84B (100-inch) scores 8.0/10 here (panel thinness, bezels, stand/mount options, and finish).
Pros & Cons
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
LG QNED84B (100-inch)
Pros
- +Same Alpha 8 AI Processor Gen 3 as the flagship QNED90, at a fraction of the price
- +AI Super Upscaling shared only with the QNED90
- +Massive 100" size for genuine home-theater scale
- +webOS 26 with the same Sports Portal and AI features as the flagship
Cons
- −Lacks the QNED90's 165Hz VRR and 330Hz Motion Booster
- −Peak brightness, refresh rate, and HDMI 2.1 port count not independently confirmed
- −US retail SKU naming may appear slightly differently by retailer (e.g. QNED84-series badging)
- −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 LG QNED84B (55-inch) or LG QNED84B (100-inch) better overall?+
Based on our 8-category scoring, the LG QNED84B (100-inch) 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 Value, the LG QNED84B (55-inch) or the LG QNED84B (100-inch)?+
The LG QNED84B (55-inch) scores higher on Value (8.3/10 vs 6.5/10) — performance and features relative to price.
Which is better for Picture Quality, the LG QNED84B (55-inch) or the LG QNED84B (100-inch)?+
The LG QNED84B (100-inch) scores higher on Picture Quality (8.2/10 vs 7.6/10) — panel technology, contrast, and color accuracy.
Which is better for Brightness & HDR, the LG QNED84B (55-inch) or the LG QNED84B (100-inch)?+
The LG QNED84B (100-inch) scores higher on Brightness & HDR (8.0/10 vs 7.5/10) — peak nits and HDR format support for highlight detail.
Which is better for Built-in Sound, the LG QNED84B (55-inch) or the LG QNED84B (100-inch)?+
The LG QNED84B (100-inch) scores higher on Built-in Sound (7.0/10 vs 6.5/10) — onboard speaker power, clarity, and Dolby Atmos support.
Is the LG QNED84B (55-inch) worth the price difference over the LG QNED84B (100-inch)?+
The LG QNED84B (55-inch) is the cheaper option at $729.99 versus $3,999.99. Whether the pricier model is "worth it" depends on how much you value its lead in Value.
What's the warranty on the LG QNED84B (55-inch) vs the LG QNED84B (100-inch)?+
The LG QNED84B (55-inch) ships with a 12-month warranty; the LG QNED84B (100-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
LG QNED92B — $12999.99
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.