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Hisense U7N 75" vs Samsung S90D 55"

Side-by-side comparison of viewing distance, PPI, and specifications

Hisense U7N 75"

75" · 3840×2160 · Mini-LED
Optimal Viewing Distance 1.5m
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Samsung S90D 55"

55" · 3840×2160 · QD-OLED
Optimal Viewing Distance 1.1m
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Specification Hisense U7N 75" 2024 Samsung S90D 55" 2024
Screen Size 75" (Better) 55"
Resolution 3840×2160 3840×2160
Pixel Density (PPI) 59 80 (Better)
Optimal Viewing Distance 1.5m 1.1m (Better)
Panel Type Mini-LED QD-OLED
Viewing Angle 178° 178°
Aspect Ratio 16:9 16:9
Refresh Rate 144 Hz 144 Hz
Variable Refresh Rate (VRR) FreeSync Premium Pro FreeSync Premium Pro
Response Time 3 ms GTG 0.1 ms GTG (Better)
HDR Certification None None
SDR Brightness 531 nits (Better) 250 nits
HDR Peak Brightness 1500 nits 1500 nits
Contrast Ratio 1:4,976 1:1,000,000 (Better)
Ports 4x HDMI · 0x DP 4x HDMI · 0x DP
Color Gamut sRGB 100% · DCI-P3 95% · Adobe RGB 88% sRGB 100% · DCI-P3 98% · Adobe RGB 97% (Better)
Year 2024 2024

Summary

The Samsung S90D 55" has higher pixel density (80 PPI), making it sharper at close range.

The Samsung S90D 55" allows sitting closer (1.1m) while maintaining retina quality.

The Hisense U7N 75" offers a larger 75" display for more immersive viewing.

Frequently Asked Questions

Which has better PPI: Hisense U7N 75" or Samsung S90D 55"?
The Samsung S90D 55" has 80 PPI compared to 59 PPI for the Hisense U7N 75".
Which has a closer optimal viewing distance?
The Samsung S90D 55" requires 1.1m vs 1.5m for the Hisense U7N 75" 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).

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