ASUS ROG Strix XG309CM vs Samsung Odyssey G9 49"
Side-by-side comparison of viewing distance, PPI, and specifications
Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Strix XG309CM94 PPI #65
Samsung Odyssey G9 49"109 PPI #55
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Strix XG309CM300 nits #65
Samsung Odyssey G9 49"1000 nits #7
250 nits2000 nits
DCI-P3 Color Gamut
Samsung Odyssey G9 49"95% #48
79%100%
Refresh Rate
ASUS ROG Strix XG309CM220 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 93cm for the ASUS ROG Strix XG309CM.
- Brightness: advantage Samsung Odyssey G9 49" — The Samsung Odyssey G9 49" is 40% brighter in SDR (420 vs 300 nits), a noticeable difference for outdoor readability. HDR peak: 1000 vs 300 nits.
Key Differences
| Specification | ASUS ROG Strix XG309CM | Samsung Odyssey G9 49" |
|---|---|---|
| Color Gamut | sRGB 110% | sRGB 125% · DCI-P3 95% · Adobe RGB 92% |
| Year | 2022 | 2020 |
| Screen Size | 29.5" | 48.7" |
| Resolution | 2560×1080 | 5120×1440 |
| Pixel Density (PPI) | 94 | 109 |
| Optimal Viewing Distance | 93cm | 80cm |
| Refresh Rate | 220 Hz | 240 Hz |
| SDR Brightness | 300 nits | 420 nits |
| HDR Peak Brightness | 300 nits | 1000 nits |
| Contrast Ratio | 1:1,000 | 1:2,500 |
All specifications
| Specification | ASUS ROG Strix XG309CM 2022 | Samsung Odyssey G9 49" 2020 |
|---|---|---|
| Screen Size | 29.5" | 48.7" (Better) |
| Resolution | 2560×1080 | 5120×1440 (Better) |
| Pixel Density (PPI) | 94 | 109 (Better) |
| Optimal Viewing Distance | 93cm | 80cm (Better) |
| Panel Type | IPS | VA |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 32:9 |
| Refresh Rate | 220 Hz | 240 Hz (Better) |
| Variable Refresh Rate (VRR) | FreeSync Premium | FreeSync Premium Pro |
| Response Time | 1 ms GTG | 1 ms GTG |
| HDR Certification | None | DisplayHDR 1000 |
| SDR Brightness | 300 nits | 420 nits (Better) |
| HDR Peak Brightness | 300 nits | 1000 nits (Better) |
| Contrast Ratio | 1:1,000 | 1:2,500 (Better) |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 1x HDMI · 2x DP · USB Hub |
| USB-C Power Delivery | 15 W | — |
| Color Gamut | sRGB 110% (Better) | sRGB 125% · DCI-P3 95% · Adobe RGB 92% |
| Year | 2022 (Better) | 2020 |
Frequently Asked Questions
Which has better PPI: ASUS ROG Strix XG309CM or Samsung Odyssey G9 49"?
The Samsung Odyssey G9 49" has 109 PPI compared to 94 PPI for the ASUS ROG Strix XG309CM.
Which has a closer optimal viewing distance?
The Samsung Odyssey G9 49" requires 80cm vs 93cm for the ASUS ROG Strix XG309CM to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Strix XG309CM 2022 · 94 PPI · 29.5" · 220 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 Strix XG309CM 2022 · 94 PPI · 29.5" · 220 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).
Last updated: