ASUS ROG Swift OLED PG27UCDM 27" vs Samsung Odyssey OLED G8 G80SD 32"
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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Samsung Odyssey OLED G8 G80SD 32"
31.5" · 3840×2160 · QD-OLED
Optimal Viewing Distance 62cm
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Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Swift OLED PG27UCDM 27"166 PPI #16
Samsung Odyssey OLED G8 G80SD 32"140 PPI #30
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Swift OLED PG27UCDM 27"1000 nits #7
Samsung Odyssey OLED G8 G80SD 32"1000 nits #7
250 nits2000 nits
DCI-P3 Color Gamut63in category
ASUS ROG Swift OLED PG27UCDM 27"99% #2
Samsung Odyssey OLED G8 G80SD 32"99% #2
79%100%
Refresh Rate
ASUS ROG Swift OLED PG27UCDM 27"240 Hz
Samsung Odyssey OLED G8 G80SD 32"240 Hz
StandardHighUltra
Summary
- Sharpness: no visible difference — Both screens exceed the retina threshold at 65cm. The ASUS ROG Swift OLED PG27UCDM 27" has 19% higher pixel density (166 vs 140 PPI), but this only becomes visible below 53cm.
- Brightness: comparable — Both screens offer similar brightness (250 vs 250 nits SDR). Neither has a meaningful advantage for outdoor use.
Key Differences
| Specification | ASUS ROG Swift OLED PG27UCDM 27" | Samsung Odyssey OLED G8 G80SD 32" |
|---|---|---|
| Pixel Density (PPI) | 166 | 140 |
| Optimal Viewing Distance | 53cm | 62cm |
| Contrast Ratio | 1:1,500,000 | 1:1,000,000 |
| Color Gamut | sRGB 145% · DCI-P3 99% · Adobe RGB 94% | sRGB 100% · DCI-P3 99% · Adobe RGB 98% |
| Year | 2025 | 2024 |
| Screen Size | 26.5" | 31.5" |
All specifications
| Specification | ASUS ROG Swift OLED PG27UCDM 27" 2025 | Samsung Odyssey OLED G8 G80SD 32" 2024 |
|---|---|---|
| Screen Size | 26.5" | 31.5" (Better) |
| Resolution | 3840×2160 | 3840×2160 |
| Pixel Density (PPI) | 166 (Better) | 140 |
| Optimal Viewing Distance | 53cm (Better) | 62cm |
| Panel Type | QD-OLED | QD-OLED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 16:9 |
| Refresh Rate | 240 Hz | 240 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium Pro | FreeSync Premium Pro |
| 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 | 1000 nits |
| Contrast Ratio | 1:1,500,000 (Better) | 1:1,000,000 |
| 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 100% · DCI-P3 99% · Adobe RGB 98% |
| Year | 2025 (Better) | 2024 |
Frequently Asked Questions
Which has better PPI: ASUS ROG Swift OLED PG27UCDM 27" or Samsung Odyssey OLED G8 G80SD 32"?
The ASUS ROG Swift OLED PG27UCDM 27" has 166 PPI compared to 140 PPI for the Samsung Odyssey OLED G8 G80SD 32".
Which has a closer optimal viewing distance?
The ASUS ROG Swift OLED PG27UCDM 27" requires 53cm vs 62cm for the Samsung Odyssey OLED G8 G80SD 32" 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 Samsung Odyssey OLED G8 G80SD 32" 2024 · 140 PPI · 31.5" · 240 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 Samsung Odyssey OLED G8 G80SD 32" 2024 · 140 PPI · 31.5" · 240 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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