Samsung QN77S84FAEXZA vs TCL 65QM8K
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Choosing between the Samsung QN77S84FAEXZA and TCL 65QM8K? 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 Samsung QN77S84FAEXZA scores higher in value, future-proofing. The TCL 65QM8K leads in video quality, form factor, room fit. They score similarly in gaming performance, ease of use.
On the display side, the Samsung QN77S84FAEXZA uses a QD-OLED panel while the TCL 65QM8K uses VA, and screen sizes differ at 77" vs 65". 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 TCL 65QM8K is the stronger choice — it leads in 3 of 7 scored dimensions. The Samsung QN77S84FAEXZA makes more sense if you prioritize the 2 dimensions where it leads.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
Samsung S84F OLED TV 77-Inch 4K Smart with Vision AI in Graphite Black
TCL 65" Class QM8K Series QD-Mini LED 4K UHD Smart Google TV, 65 Inch TVs
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Screen Size | 77" | 65" |
| Resolution | 4K | 4K |
| Panel Type | QD-OLED | VA |
| Backlight Type | none | mini-LED |
| Native Contrast Ratio | Self-illuminating pixels | — |
| HDR Formats | HDR10, HLG | HDR10, Dolby Vision, HLG |
| Refresh Rate | 120Hz | 144Hz |
| VRR | Yes | Yes |
| VRR Type | FreeSync Premium | — |
| ALLM | Yes | No |
| Smart OS | Tizen | Google TV |
| Speaker Config | — | — |
| Dolby Atmos (Speakers) | Yes | Yes |
| HDMI Total Ports | 4 | 4 |
| HDMI 2.1 Ports | 4 | 0 |
| eARC Port | No | Yes |
| VESA Pattern | 400x300 | 300x300 |
| Processor | NQ4 AI Gen2 Processor | — |
| Model Year | — | — |
Key Differences
- Series Name: Samsung QN77S84FAEXZA at S84F vs TCL 65QM8K at QM8K
- USB Type: Samsung QN77S84FAEXZA at 2 x USB-A vs TCL 65QM8K at 1 x USB 3.0, 1 x USB 2.0
- Panel Type: Samsung QN77S84FAEXZA at QD-OLED vs TCL 65QM8K at VA. 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: Samsung QN77S84FAEXZA at HDR10, HLG vs TCL 65QM8K at HDR10, Dolby Vision, HLG. Dolby Vision adds dynamic metadata that adjusts brightness scene-by-scene. HDR10 is the baseline. HDR10+ is Samsung's alternative to Dolby Vision.
- Smart OS: Samsung QN77S84FAEXZA at Tizen vs TCL 65QM8K at Google TV
Which Should You Choose?
Choose Samsung QN77S84FAEXZA if you want:
- + larger 77" screen for more immersive viewing
- + better hdmi 2.1 ports — hDMI 2
- + better depth (w/ stand)
Choose TCL 65QM8K if you want:
- + better refresh rate — 120 Hz provides noticeably smoother motion for sports and gaming
- + better native refresh rate
- + lighter weight for easier placement
- + lighter weight for easier placement
See Where These Rank
Check our editorial rankings to see how Samsung QN77S84FAEXZA and TCL 65QM8K 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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