BenQ RD280U vs Kuycon P40K
Side-by-side comparison of viewing distance, PPI, and specifications
| Specification | BenQ RD280U 2024 | Kuycon P40K 2025 |
|---|---|---|
| Screen Size | 28.2" | 40" (Better) |
| Resolution | 3840×2560 | 5120×2160 (Better) |
| Pixel Density (PPI) | 164 (Better) | 139 |
| Optimal Viewing Distance | 53cm (Better) | 63cm |
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 3:2 | 21:9 |
| Refresh Rate | 60 Hz | 120 Hz (Better) |
| Variable Refresh Rate (VRR) | None | G-SYNC Compatible |
| Response Time | 5 ms GTG (Better) | 8 ms GTG |
| HDR Certification | DisplayHDR 400 | None |
| SDR Brightness | 350 nits | 400 nits (Better) |
| HDR Peak Brightness | 400 nits | 450 nits (Better) |
| Contrast Ratio | 1:1,200 | 1:2,000 (Better) |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | 90 W | 100 W (Better) |
| Color Gamut | sRGB 100% · DCI-P3 93% · Adobe RGB 87% | sRGB 99% · DCI-P3 96% (Better) |
| Year | 2024 | 2025 (Better) |
Summary
The BenQ RD280U has higher pixel density (164 PPI), making it sharper at close range.
The BenQ RD280U allows sitting closer (53cm) while maintaining retina quality.
The Kuycon P40K offers a larger 40" display for more immersive viewing.
Frequently Asked Questions
Which has better PPI: BenQ RD280U or Kuycon P40K?
The BenQ RD280U has 164 PPI compared to 139 PPI for the Kuycon P40K.
Which has a closer optimal viewing distance?
The BenQ RD280U requires 53cm vs 63cm for the Kuycon P40K 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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