ASUS ROG Swift OLED PG27UCDM 27"
26.5" QD-OLED · 3840× 2160 · 166 PPI
Optimal Viewing Distance
53cm
Retina distance: 52.5cm / 20.7in
Too Close
< 16cm
Perfect Zone
53cm
Good Zone
79cm
Acceptable Zone
1.3m
Too Far
2.1m
53cm Perfect Zone
Retina quality — pixels are invisible at this distance.
79cm Good Zone
Sharp image — slightly past the ideal distance but still excellent.
1.3m Acceptable Zone
The screen appears smaller — you're starting to miss fine details.
2.1m Too Far
You're not using your screen's full resolution. Move closer.
Specifications
| Brand | ASUS |
|---|---|
| Model | ROG Swift OLED PG27UCDM 27" |
| Screen Size | 26.5" |
| Resolution | 3840×2160 |
| Panel | QD-OLED |
| Refresh Rate | 240 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium Pro |
| Response Time | 0.0 ms GTG |
| HDR Certification | DisplayHDR True Black 400 |
| SDR Brightness | 250 nits |
| HDR Peak Brightness | 1000 nits |
| Contrast Ratio | 1:1,500,000 |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | 90 W |
| Color Gamut | sRGB 145% · DCI-P3 99% · Adobe RGB 94% |
| Viewing Angle | 178° — Excellent |
| Pixel Density (PPI) | 166 |
| Aspect Ratio | 16:9 |
| Year | 2025 |
Category Ranking
Pixel Density (PPI)
#16 / 67in category
93 PPI166 PPI224 PPI
HDR Peak Brightness
#7 / 67in category
250 nits1000 nits2000 nits
DCI-P3 Color Gamut
#2 / 63in category
79%99%100%
Refresh Rate240 Hz
StandardHighUltra
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Frequently Asked Questions
What is the optimal viewing distance for the ASUS ROG Swift OLED PG27UCDM 27"?
The optimal viewing distance for the ASUS ROG Swift OLED PG27UCDM 27" (26.5") is approximately 53cm. At this distance, individual pixels become invisible to the human eye.
What is the PPI of the ASUS ROG Swift OLED PG27UCDM 27"?
The ASUS ROG Swift OLED PG27UCDM 27" has a pixel density of 166 PPI (pixels per inch) with a 3840×2160 resolution on a 26.5" display.
Is the ASUS ROG Swift OLED PG27UCDM 27" good for desktop work?
With 166 PPI and a 26.5" QD-OLED display, the ASUS ROG Swift OLED PG27UCDM 27" is very good for desktop work when viewed from the recommended distance of 53cm.
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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