LG 27LX5QKNA vs Samsung QN77S85FAEXZA
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Choosing between the LG 27LX5QKNA and Samsung QN77S85FAEXZA? 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 27LX5QKNA scores higher in value, form factor, room fit. The Samsung QN77S85FAEXZA leads in video quality, gaming performance, future-proofing. They score similarly in ease of use.
On the display side, the LG 27LX5QKNA uses a LED panel while the Samsung QN77S85FAEXZA uses QD-OLED, and screen sizes differ at 27" 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.
These two are closely matched — your decision comes down to your specific room setup and speaker pairing and budget.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Screen Size | 27" | 77" |
| Resolution | 1080p | 4K |
| Panel Type | LED | QD-OLED |
| Backlight Type | mini-LED | none |
| Native Contrast Ratio | — | Self-illuminating pixels |
| HDR Formats | HDR10, HLG | |
| Refresh Rate | 60Hz | 120Hz |
| VRR | No | Yes |
| VRR Type | — | FreeSync Premium |
| ALLM | No | Yes |
| Smart OS | webOS | Tizen |
| Speaker Config | 4.0 | — |
| Dolby Atmos (Speakers) | Yes | Yes |
| HDMI Total Ports | 1 | 4 |
| HDMI 2.1 Ports | 0 | 4 |
| eARC Port | No | No |
| VESA Pattern | See Setup Info | 400x300 |
| Processor | α7 AI Processor Gen5 | NQ4 AI Gen2 Processor |
| Model Year | 2025 | — |
Key Differences
- Resolution: LG 27LX5QKNA at 1080p vs Samsung QN77S85FAEXZA at 4K
- Panel Type: LG 27LX5QKNA at LED vs Samsung QN77S85FAEXZA 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.
- HDR Formats: LG 27LX5QKNA at vs Samsung QN77S85FAEXZA at HDR10, HLG. Dolby Vision adds dynamic metadata that adjusts brightness scene-by-scene. HDR10 is the baseline. HDR10+ is Samsung's alternative to Dolby Vision.
- HDMI Total Ports: LG 27LX5QKNA at 1 vs Samsung QN77S85FAEXZA at 4
- Smart OS: LG 27LX5QKNA at webOS vs Samsung QN77S85FAEXZA at Tizen
Which Should You Choose?
Choose LG 27LX5QKNA if you want:
- + lighter weight for easier placement
Choose Samsung QN77S85FAEXZA if you want:
- + larger 77" screen for more immersive viewing
- + better refresh rate — 120 Hz provides noticeably smoother motion for sports and gaming
- + better native refresh rate
- + better hdmi total ports
See Where These Rank
Check our editorial rankings to see how LG 27LX5QKNA and Samsung QN77S85FAEXZA 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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