LG G4 77" vs TCL QM7K 65"
Side-by-side comparison of viewing distance, PPI, and specifications
Advantages of LG G4 77"
| Specification | LG G4 77" | TCL QM7K 65" |
|---|---|---|
| Screen Size | 77" | 65" |
| Response Time | 0.1 ms GTG | 6 ms GTG |
| Contrast Ratio | 1:1,000,000 | 1:5,000 |
| Color Gamut | sRGB 100% · DCI-P3 96.6% · Adobe RGB 95% | sRGB 100% · DCI-P3 97% · Adobe RGB 90% |
Advantages of TCL QM7K 65"
| Specification | LG G4 77" | TCL QM7K 65" |
|---|---|---|
| Pixel Density (PPI) | 57 | 68 |
| Optimal Viewing Distance | 1.5m | 1.3m |
| SDR Brightness | 361 nits | 550 nits |
| HDR Peak Brightness | 1488 nits | 1700 nits |
| Year | 2024 | 2025 |
Identical
| Specification | LG G4 77" | TCL QM7K 65" |
|---|---|---|
| Resolution | 3840×2160 | 3840×2160 |
| Panel Type | OLED | Mini-LED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 16:9 |
| Refresh Rate | 144 Hz | 144 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | FreeSync Premium Pro |
| HDR Certification | None | None |
| Ports | 4x HDMI | 4x HDMI |
Summary
Sharpness: no visible difference
Both screens exceed the retina threshold at 250cm. The TCL QM7K 65" has 16% higher pixel density (68 vs 57 PPI), but this only becomes visible below 129cm.
Brightness: advantage TCL QM7K 65"
The TCL QM7K 65" is 52% brighter in SDR (550 vs 361 nits), a noticeable difference for outdoor readability. HDR peak: 1700 vs 1488 nits.
All specifications
| Specification | LG G4 77" 2024 | TCL QM7K 65" 2025 |
|---|---|---|
| Screen Size | 77" (Better) | 65" |
| Resolution | 3840×2160 | 3840×2160 |
| Pixel Density (PPI) | 57 | 68 (Better) |
| Optimal Viewing Distance | 1.5m | 1.3m (Better) |
| Panel Type | OLED | Mini-LED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 16:9 |
| Refresh Rate | 144 Hz | 144 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | FreeSync Premium Pro |
| Response Time | 0.1 ms GTG (Better) | 6 ms GTG |
| HDR Certification | None | None |
| SDR Brightness | 361 nits | 550 nits (Better) |
| HDR Peak Brightness | 1488 nits | 1700 nits (Better) |
| Contrast Ratio | 1:1,000,000 (Better) | 1:5,000 |
| Ports | 4x HDMI | 4x HDMI |
| Color Gamut | sRGB 100% · DCI-P3 96.6% · Adobe RGB 95% (Better) | sRGB 100% · DCI-P3 97% · Adobe RGB 90% |
| Year | 2024 | 2025 (Better) |
Frequently Asked Questions
Which has better PPI: LG G4 77" or TCL QM7K 65"?
The TCL QM7K 65" has 68 PPI compared to 57 PPI for the LG G4 77".
Which has a closer optimal viewing distance?
The TCL QM7K 65" requires 1.3m vs 1.5m for the LG G4 77" to reach retina quality.
Methodology & Sources
Formula: Retina distance (cm) = 3438 / PPI. Displayed values are rounded for readability.
Sources: Official manufacturer spec sheets and product pages. Specs are normalized before comparisons.
Comparison winners are calculated metric by metric (higher is better for most specs; lower is better for distance/response time).
Last updated:
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