LG 100QNED85AU vs Samsung QN77S90FAFXZA
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Choosing between the LG 100QNED85AU and Samsung QN77S90FAFXZA? Both compete in the TV segment. Here’s how they compare across the specs that matter most for your home theater.
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Looking at overall performance dimensions: The LG 100QNED85AU scores higher in value. The Samsung QN77S90FAFXZA leads in form factor, room fit. They score similarly in video quality, gaming performance, ease of use, future-proofing.
On the display side, the LG 100QNED85AU uses a VA panel while the Samsung QN77S90FAFXZA uses QD-OLED, and screen sizes differ at 100" vs 77". OLED panels produce perfect blacks by turning pixels off entirely. QD-OLED adds a quantum dot layer for wider color. VA panels offer better contrast than IPS but narrower viewing angles. Mini-LED is a backlight technology applied to LCD panels, offering thousands of dimming zones for improved contrast. Bigger isn't always better — it depends on viewing distance. THX recommends a 36-degree viewing angle; SMPTE suggests 30 degrees minimum. Our viewing distance calculator helps find the sweet spot.
These two TV options trade wins across different dimensions. The right choice depends on which specs matter most for your room and listening preferences — review the detailed table below to decide.
For most home theaters, the Samsung QN77S90FAFXZA is the stronger choice — it leads in 2 of 7 scored dimensions. The LG 100QNED85AU makes more sense if you prioritize the 1 dimension where it leads.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Screen Size | 100" | 77" |
| Resolution | 4K | 4K |
| Panel Type | VA | QD-OLED |
| Backlight Type | mini-LED | none |
| Native Contrast Ratio | — | Self-illuminating pixels |
| HDR Formats | HDR10, HLG | HDR10, HLG |
| Refresh Rate | 120Hz | 120Hz |
| VRR | Yes | Yes |
| VRR Type | FreeSync | FreeSync |
| ALLM | Yes | Yes |
| Smart OS | webOS | Tizen |
| Speaker Config | 2.2 | 2.1 |
| Dolby Atmos (Speakers) | Yes | Yes |
| HDMI Total Ports | 4 | 4 |
| HDMI 2.1 Ports | 4 | 4 |
| eARC Port | Yes | No |
| VESA Pattern | 600x400 | 400x300 |
| Processor | α8 AI Processor 4K Gen2 | NQ4 AI Gen3 Processor |
| Model Year | — | — |
Key Differences
- Processor: LG 100QNED85AU at α8 AI Processor 4K Gen2 vs Samsung QN77S90FAFXZA at NQ4 AI Gen3 Processor
- USB Type: LG 100QNED85AU at 2ea (v 2.0) vs Samsung QN77S90FAFXZA at 3 x USB-A
- Panel Type: LG 100QNED85AU at VA vs Samsung QN77S90FAFXZA at QD-OLED. OLED panels produce perfect blacks by turning pixels off entirely. QD-OLED adds a quantum dot layer for wider color. VA panels offer better contrast than IPS but narrower viewing angles. Mini-LED is a backlight technology applied to LCD panels, offering thousands of dimming zones for improved contrast.
- Smart OS: LG 100QNED85AU at webOS vs Samsung QN77S90FAFXZA at Tizen
- Weight (w/o Stand): LG 100QNED85AU at 145.3lbs vs Samsung QN77S90FAFXZA at 76.7lbs
Which Should You Choose?
Choose LG 100QNED85AU if you want:
- + larger 100" screen for more immersive viewing
Choose Samsung QN77S90FAFXZA if you want:
- + better depth (w/ stand)
- + lighter weight for easier placement
- + lighter weight for easier placement
See Where These Rank
Check our editorial rankings to see how LG 100QNED85AU and Samsung QN77S90FAFXZA compare to the rest of the field.
Best TV RankingsRelated Calculators
Specifications sourced from manufacturer datasheets and verified against retailer listings. Prices updated hourly from authorized retailers. Scoring uses our open methodology — products are never ranked, promoted, or suppressed based on affiliate commission rates.
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