ASUS ROG Swift OLED PG27UCDM 27" vs ASUS ROG Swift PG27AQDP 27"
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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ASUS ROG Swift PG27AQDP 27"
26.5" · 2560×1440 · OLED
Optimal Viewing Distance 79cm
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Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Swift OLED PG27UCDM 27"166 PPI #16
ASUS ROG Swift PG27AQDP 27"111 PPI #45
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Swift OLED PG27UCDM 27"1000 nits #7
ASUS ROG Swift PG27AQDP 27"1300 nits #3
250 nits2000 nits
DCI-P3 Color Gamut63in category
ASUS ROG Swift OLED PG27UCDM 27"99% #2
ASUS ROG Swift PG27AQDP 27"99% #2
79%100%
Refresh Rate
ASUS ROG Swift OLED PG27UCDM 27"240 Hz
ASUS ROG Swift PG27AQDP 27"480 Hz
StandardHighUltra
Summary
- Sharpness: advantage ASUS ROG Swift OLED PG27UCDM 27" — At 65cm, the ASUS ROG Swift OLED PG27UCDM 27" is retina (166 PPI) while the ASUS ROG Swift PG27AQDP 27" is not — you need to sit at least 79cm away for pixel-free viewing.
- Brightness: advantage ASUS ROG Swift PG27AQDP 27" — Similar SDR brightness (250 vs 250 nits), but the ASUS ROG Swift PG27AQDP 27" leads in HDR peak (1300 vs 1000 nits).
- Upgrade: ASUS ROG Swift OLED PG27UCDM 27" vs ASUS ROG Swift PG27AQDP 27" — Display gains from ASUS ROG Swift PG27AQDP 27" to ASUS ROG Swift OLED PG27UCDM 27": 3840×2160 vs 2560×1440.
Key Differences
| Specification | ASUS ROG Swift OLED PG27UCDM 27" | ASUS ROG Swift PG27AQDP 27" |
|---|---|---|
| Resolution | 3840×2160 | 2560×1440 |
| Pixel Density (PPI) | 166 | 111 |
| Optimal Viewing Distance | 53cm | 79cm |
| Color Gamut | sRGB 145% · DCI-P3 99% · Adobe RGB 94% | sRGB 135% · DCI-P3 99% · Adobe RGB 96% |
| Year | 2025 | 2024 |
| Refresh Rate | 240 Hz | 480 Hz |
| HDR Peak Brightness | 1000 nits | 1300 nits |
All specifications
| Specification | ASUS ROG Swift OLED PG27UCDM 27" 2025 | ASUS ROG Swift PG27AQDP 27" 2024 |
|---|---|---|
| Screen Size | 26.5" | 26.5" |
| Resolution | 3840×2160 (Better) | 2560×1440 |
| Pixel Density (PPI) | 166 (Better) | 111 |
| Optimal Viewing Distance | 53cm (Better) | 79cm |
| Panel Type | QD-OLED | OLED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 16:9 |
| Refresh Rate | 240 Hz | 480 Hz (Better) |
| Variable Refresh Rate (VRR) | FreeSync Premium Pro | FreeSync Premium |
| Response Time | 0.0 ms GTG | 0.0 ms GTG |
| HDR Certification | DisplayHDR True Black 400 | DisplayHDR True Black 400 |
| SDR Brightness | 250 nits | 250 nits |
| HDR Peak Brightness | 1000 nits | 1300 nits (Better) |
| Contrast Ratio | 1:1,500,000 | 1:1,500,000 |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB Hub |
| USB-C Power Delivery | 90 W | — |
| Color Gamut | sRGB 145% · DCI-P3 99% · Adobe RGB 94% (Better) | sRGB 135% · DCI-P3 99% · Adobe RGB 96% |
| Year | 2025 (Better) | 2024 |
Frequently Asked Questions
Which has better PPI: ASUS ROG Swift OLED PG27UCDM 27" or ASUS ROG Swift PG27AQDP 27"?
The ASUS ROG Swift OLED PG27UCDM 27" has 166 PPI compared to 111 PPI for the ASUS ROG Swift PG27AQDP 27".
Which has a closer optimal viewing distance?
The ASUS ROG Swift OLED PG27UCDM 27" requires 53cm vs 79cm for the ASUS ROG Swift PG27AQDP 27" to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Swift OLED PG27UCDM 27" 2025 · 166 PPI · 26.5" · 240 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Swift PG27AQDP 27" 2024 · 111 PPI · 26.5" · 480 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Swift OLED PG27UCDM 27" 2025 · 166 PPI · 26.5" · 240 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Swift PG27AQDP 27" 2024 · 111 PPI · 26.5" · 480 Hz
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).
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