ASUS ROG Strix XG309CM vs Dell S3225QC
Side-by-side comparison of viewing distance, PPI, and specifications
| Specification | ASUS ROG Strix XG309CM 2022 | Dell S3225QC 2025 |
|---|---|---|
| Screen Size | 29.5" | 31.6" (Better) |
| Resolution | 2560×1080 | 3840×2160 (Better) |
| Pixel Density (PPI) | 94 | 139 (Better) |
| Optimal Viewing Distance | 93cm | 63cm (Better) |
| Panel Type | IPS | QD-OLED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 16:9 |
| Refresh Rate | 220 Hz (Better) | 120 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | FreeSync Premium |
| Response Time | 1 ms GTG | 0.0 ms GTG (Better) |
| HDR Certification | None | DisplayHDR True Black 400 |
| SDR Brightness | 300 nits (Better) | 250 nits |
| HDR Peak Brightness | 300 nits | 1000 nits (Better) |
| Contrast Ratio | 1:1,000 | 1:1,500,000 (Better) |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 1x HDMI · 0x DP · USB-C · USB Hub |
| USB-C Power Delivery | 15 W | 90 W (Better) |
| Color Gamut | sRGB 110% (Better) | sRGB 100% · DCI-P3 99% · Adobe RGB 95% |
| Year | 2022 | 2025 (Better) |
Summary
The Dell S3225QC has higher pixel density (139 PPI), making it sharper at close range.
The Dell S3225QC allows sitting closer (63cm) while maintaining retina quality.
The Dell S3225QC offers a larger 31.6" display for more immersive viewing.
Frequently Asked Questions
Which has better PPI: ASUS ROG Strix XG309CM or Dell S3225QC?
The Dell S3225QC has 139 PPI compared to 94 PPI for the ASUS ROG Strix XG309CM.
Which has a closer optimal viewing distance?
The Dell S3225QC requires 63cm vs 93cm for the ASUS ROG Strix XG309CM 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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