Dell UltraSharp U4025QW
39.7" IPS · 5120× 2160 · 140 PPI
Optimal Viewing Distance
62cm
Retina distance: 62.4cm / 24.6in
Too Close
< 19cm
Perfect Zone
62cm
Good Zone
94cm
Acceptable Zone
1.6m
Too Far
2.5m
62cm 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 | Dell |
|---|---|
| Model | UltraSharp U4025QW |
| Screen Size | 39.7" |
| Resolution | 5120×2160 |
| Panel | IPS |
| Refresh Rate | 120 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium |
| Response Time | 5 ms GTG |
| HDR Certification | DisplayHDR 600 |
| SDR Brightness | 450 nits |
| HDR Peak Brightness | 600 nits |
| Contrast Ratio | 1:2,000 |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | 140 W |
| Color Gamut | sRGB 100% · DCI-P3 99% · Adobe RGB 96% |
| Viewing Angle | 178° — Excellent |
| Pixel Density (PPI) | 140 |
| Aspect Ratio | 21:9 |
| Year | 2024 |
Category Ranking
Pixel Density (PPI)
#30 / 67in category
93 PPI140 PPI224 PPI
HDR Peak Brightness
#22 / 67in category
250 nits600 nits2000 nits
DCI-P3 Color Gamut
#2 / 63in category
79%99%100%
Refresh Rate120 Hz
StandardHighUltra
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Frequently Asked Questions
What is the optimal viewing distance for the Dell UltraSharp U4025QW?
The optimal viewing distance for the Dell UltraSharp U4025QW (39.7") is approximately 62cm. At this distance, individual pixels become invisible to the human eye.
What is the PPI of the Dell UltraSharp U4025QW?
The Dell UltraSharp U4025QW has a pixel density of 140 PPI (pixels per inch) with a 5120×2160 resolution on a 39.7" display.
Is the Dell UltraSharp U4025QW good for desktop work?
With 140 PPI and a 39.7" IPS display, the Dell UltraSharp U4025QW is very good for desktop work when viewed from the recommended distance of 62cm.
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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