ASUS ROG Strix XG309CM vs Kuycon P27D
Side-by-side comparison of viewing distance, PPI, and specifications
Advantages of ASUS ROG Strix XG309CM
| Specification | ASUS ROG Strix XG309CM | Kuycon P27D |
|---|---|---|
| Screen Size | 29.5" | 27" |
| Refresh Rate | 220 Hz | 144 Hz |
| Response Time | 1 ms GTG | 5 ms GTG |
| Color Gamut | sRGB 110% | sRGB 99% |
Advantages of Kuycon P27D
| Specification | ASUS ROG Strix XG309CM | Kuycon P27D |
|---|---|---|
| Resolution | 2560×1080 | 3840×2160 |
| Pixel Density (PPI) | 94 | 163 |
| Optimal Viewing Distance | 93cm | 54cm |
| SDR Brightness | 300 nits | 500 nits |
| HDR Peak Brightness | 300 nits | 500 nits |
| USB-C Power Delivery | 15 W | 100 W |
| Year | 2022 | 2025 |
Identical
| Specification | ASUS ROG Strix XG309CM | Kuycon P27D |
|---|---|---|
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 16:9 |
| Variable Refresh Rate (VRR) | FreeSync Premium | G-SYNC Compatible |
| HDR Certification | None | None |
| Contrast Ratio | 1:1,000 | 1:1,000 |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
Summary
Sharpness: advantage Kuycon P27D
At 65cm, the Kuycon P27D is retina (163 PPI) while the ASUS ROG Strix XG309CM is not — you need to sit at least 93cm away for pixel-free viewing.
Brightness: advantage Kuycon P27D
The Kuycon P27D is 67% brighter in SDR (500 vs 300 nits), a noticeable difference for outdoor readability. HDR peak: 500 vs 300 nits.
All specifications
| Specification | ASUS ROG Strix XG309CM 2022 | Kuycon P27D 2025 |
|---|---|---|
| Screen Size | 29.5" (Better) | 27" |
| Resolution | 2560×1080 | 3840×2160 (Better) |
| Pixel Density (PPI) | 94 | 163 (Better) |
| Optimal Viewing Distance | 93cm | 54cm (Better) |
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 16:9 |
| Refresh Rate | 220 Hz (Better) | 144 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | G-SYNC Compatible |
| Response Time | 1 ms GTG (Better) | 5 ms GTG |
| HDR Certification | None | None |
| SDR Brightness | 300 nits | 500 nits (Better) |
| HDR Peak Brightness | 300 nits | 500 nits (Better) |
| Contrast Ratio | 1:1,000 | 1:1,000 |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | 15 W | 100 W (Better) |
| Color Gamut | sRGB 110% (Better) | sRGB 99% |
| Year | 2022 | 2025 (Better) |
Frequently Asked Questions
Which has better PPI: ASUS ROG Strix XG309CM or Kuycon P27D?
The Kuycon P27D has 163 PPI compared to 94 PPI for the ASUS ROG Strix XG309CM.
Which has a closer optimal viewing distance?
The Kuycon P27D requires 54cm 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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