ASUS ROG Swift PG42UQ 42" vs Samsung Odyssey G9 49"
Side-by-side comparison of viewing distance, PPI, and specifications
ASUS ROG Swift PG42UQ 42"
41.5" · 3840×2160 · OLED
Optimal Viewing Distance 82cm
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Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Swift PG42UQ 42"106 PPI #64
Samsung Odyssey G9 49"109 PPI #55
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Swift PG42UQ 42"1000 nits #7
Samsung Odyssey G9 49"1000 nits #7
250 nits2000 nits
DCI-P3 Color Gamut63in category
ASUS ROG Swift PG42UQ 42"98% #31
Samsung Odyssey G9 49"95% #48
79%100%
Refresh Rate
ASUS ROG Swift PG42UQ 42"138 Hz
Samsung Odyssey G9 49"240 Hz
StandardHighUltra
Summary
- Sharpness: advantage Samsung Odyssey G9 49" — Neither screen reaches retina quality at 65cm. The Samsung Odyssey G9 49" gets there at 80cm vs 82cm for the ASUS ROG Swift PG42UQ 42".
- Brightness: comparable — Both screens offer similar brightness (450 vs 420 nits SDR). Neither has a meaningful advantage for outdoor use.
Key Differences
| Specification | ASUS ROG Swift PG42UQ 42" | Samsung Odyssey G9 49" |
|---|---|---|
| Resolution | 3840×2160 | 5120×1440 |
| Response Time | 0.1 ms GTG | 1 ms GTG |
| SDR Brightness | 450 nits | 420 nits |
| Contrast Ratio | 1:1,000,000 | 1:2,500 |
| Color Gamut | sRGB 133% · DCI-P3 98% · Adobe RGB 94% | sRGB 125% · DCI-P3 95% · Adobe RGB 92% |
| Year | 2022 | 2020 |
| Screen Size | 41.5" | 48.7" |
| Pixel Density (PPI) | 106 | 109 |
| Optimal Viewing Distance | 82cm | 80cm |
| Refresh Rate | 138 Hz | 240 Hz |
All specifications
| Specification | ASUS ROG Swift PG42UQ 42" 2022 | Samsung Odyssey G9 49" 2020 |
|---|---|---|
| Screen Size | 41.5" | 48.7" (Better) |
| Resolution | 3840×2160 (Better) | 5120×1440 |
| Pixel Density (PPI) | 106 | 109 (Better) |
| Optimal Viewing Distance | 82cm | 80cm (Better) |
| Panel Type | OLED | VA |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 32:9 |
| Refresh Rate | 138 Hz | 240 Hz (Better) |
| Variable Refresh Rate (VRR) | G-SYNC Compatible | FreeSync Premium Pro |
| Response Time | 0.1 ms GTG (Better) | 1 ms GTG |
| HDR Certification | None | DisplayHDR 1000 |
| SDR Brightness | 450 nits (Better) | 420 nits |
| HDR Peak Brightness | 1000 nits | 1000 nits |
| Contrast Ratio | 1:1,000,000 (Better) | 1:2,500 |
| Ports | 4x HDMI · 1x DP · USB Hub | 1x HDMI · 2x DP · USB Hub |
| Color Gamut | sRGB 133% · DCI-P3 98% · Adobe RGB 94% (Better) | sRGB 125% · DCI-P3 95% · Adobe RGB 92% |
| Year | 2022 (Better) | 2020 |
Frequently Asked Questions
Which has better PPI: ASUS ROG Swift PG42UQ 42" or Samsung Odyssey G9 49"?
The Samsung Odyssey G9 49" has 109 PPI compared to 106 PPI for the ASUS ROG Swift PG42UQ 42".
Which has a closer optimal viewing distance?
The Samsung Odyssey G9 49" requires 80cm vs 82cm for the ASUS ROG Swift PG42UQ 42" to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Swift PG42UQ 42" 2022 · 106 PPI · 41.5" · 138 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs Samsung Odyssey G9 49" 2020 · 109 PPI · 48.7" · 240 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Swift PG42UQ 42" 2022 · 106 PPI · 41.5" · 138 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs Samsung Odyssey G9 49" 2020 · 109 PPI · 48.7" · 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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