ASUS ROG Swift OLED PG27UCDM 27" vs Samsung Odyssey G9 49"
Side-by-side comparison of viewing distance, PPI, and specifications
ASUS ROG Swift OLED PG27UCDM 27"
26.5" · 3840×2160 · QD-OLED
Optimal Viewing Distance 53cm
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| Specification | ASUS ROG Swift OLED PG27UCDM 27" 2025 | Samsung Odyssey G9 49" 2020 |
|---|---|---|
| Screen Size | 26.5" | 48.7" (Better) |
| Resolution | 3840×2160 (Better) | 5120×1440 |
| Pixel Density (PPI) | 166 (Better) | 109 |
| Optimal Viewing Distance | 53cm (Better) | 80cm |
| Panel Type | QD-OLED | VA |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 32:9 |
| Refresh Rate | 240 Hz | 240 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium Pro | FreeSync Premium Pro |
| Response Time | 0.0 ms GTG (Better) | 1 ms GTG |
| HDR Certification | DisplayHDR True Black 400 | DisplayHDR 1000 |
| SDR Brightness | 250 nits | 420 nits (Better) |
| HDR Peak Brightness | 1000 nits | 1000 nits |
| Contrast Ratio | 1:1,500,000 (Better) | 1:2,500 |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub | 1x HDMI · 2x DP · USB Hub |
| USB-C Power Delivery | 90 W | — |
| Color Gamut | sRGB 145% · DCI-P3 99% · Adobe RGB 94% (Better) | sRGB 125% · DCI-P3 95% · Adobe RGB 92% |
| Year | 2025 (Better) | 2020 |
Summary
The ASUS ROG Swift OLED PG27UCDM 27" has higher pixel density (166 PPI), making it sharper at close range.
The ASUS ROG Swift OLED PG27UCDM 27" allows sitting closer (53cm) while maintaining retina quality.
The Samsung Odyssey G9 49" offers a larger 48.7" display for more immersive viewing.
Frequently Asked Questions
Which has better PPI: ASUS ROG Swift OLED PG27UCDM 27" or Samsung Odyssey G9 49"?
The ASUS ROG Swift OLED PG27UCDM 27" has 166 PPI compared to 109 PPI for the Samsung Odyssey G9 49".
Which has a closer optimal viewing distance?
The ASUS ROG Swift OLED PG27UCDM 27" requires 53cm vs 80cm for the Samsung Odyssey G9 49" 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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