Kuycon P40K
40" IPS · 5120× 2160 · 139 PPI
Optimal Viewing Distance
63cm
Retina distance: 62.9cm / 24.8in
Too Close
< 19cm
Perfect Zone
63cm
Good Zone
94cm
Acceptable Zone
1.6m
Too Far
2.5m
63cm Perfect Zone
Retina quality — pixels are invisible at this distance.
94cm Good Zone
Sharp image — slightly past the ideal distance but still excellent.
1.6m Acceptable Zone
The screen appears smaller — you're starting to miss fine details.
2.5m Too Far
You're not using your screen's full resolution. Move closer.
Specifications
| Brand | Kuycon |
|---|---|
| Model | P40K |
| Screen Size | 40" |
| Resolution | 5120×2160 |
| Panel | IPS |
| Refresh Rate | 120 Hz |
| Variable Refresh Rate (VRR) | G-SYNC Compatible |
| Response Time | 8 ms GTG |
| HDR Certification | None |
| SDR Brightness | 400 nits |
| HDR Peak Brightness | 450 nits |
| Contrast Ratio | 1:2,000 |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | 100 W |
| Color Gamut | sRGB 99% · DCI-P3 96% |
| Viewing Angle | 178° — Excellent |
| Pixel Density (PPI) | 139 |
| Aspect Ratio | 21:9 |
| Year | 2025 |
Category Ranking
Pixel Density (PPI)
#41 / 67in category
93 PPI139 PPI224 PPI
HDR Peak Brightness
#48 / 67in category
250 nits450 nits2000 nits
DCI-P3 Color Gamut
#45 / 63in category
79%96%100%
Refresh Rate120 Hz
StandardHighUltra
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Frequently Asked Questions
What is the optimal viewing distance for the Kuycon P40K?
The optimal viewing distance for the Kuycon P40K (40") is approximately 63cm. At this distance, individual pixels become invisible to the human eye.
What is the PPI of the Kuycon P40K?
The Kuycon P40K has a pixel density of 139 PPI (pixels per inch) with a 5120×2160 resolution on a 40" display.
Is the Kuycon P40K good for desktop work?
With 139 PPI and a 40" IPS display, the Kuycon P40K is very good for desktop work when viewed from the recommended distance of 63cm.
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.
Last updated:
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