ASUS ROG Strix XG309CM vs LG 27GP850-B 27"
Side-by-side comparison of viewing distance, PPI, and specifications
| Specification | ASUS ROG Strix XG309CM 2022 | LG 27GP850-B 27" 2021 |
|---|---|---|
| Screen Size | 29.5" (Better) | 27" |
| Resolution | 2560×1080 | 2560×1440 (Better) |
| Pixel Density (PPI) | 94 | 109 (Better) |
| Optimal Viewing Distance | 93cm | 80cm (Better) |
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 16:9 |
| Refresh Rate | 220 Hz (Better) | 165 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | FreeSync Premium |
| Response Time | 1 ms GTG | 1 ms GTG |
| HDR Certification | None | DisplayHDR 400 |
| SDR Brightness | 300 nits | 400 nits (Better) |
| HDR Peak Brightness | 300 nits | 400 nits (Better) |
| Contrast Ratio | 1:1,000 | 1:1,000 |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB Hub |
| USB-C Power Delivery | 15 W | — |
| Color Gamut | sRGB 110% (Better) | sRGB 135% · DCI-P3 98% · Adobe RGB 93% |
| Year | 2022 (Better) | 2021 |
Summary
The LG 27GP850-B 27" has higher pixel density (109 PPI), making it sharper at close range.
The LG 27GP850-B 27" allows sitting closer (80cm) while maintaining retina quality.
The ASUS ROG Strix XG309CM offers a larger 29.5" display for more immersive viewing.
Frequently Asked Questions
Which has better PPI: ASUS ROG Strix XG309CM or LG 27GP850-B 27"?
The LG 27GP850-B 27" has 109 PPI compared to 94 PPI for the ASUS ROG Strix XG309CM.
Which has a closer optimal viewing distance?
The LG 27GP850-B 27" requires 80cm 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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