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ASUS ROG Strix XG309CM vs Dell UltraSharp U2725QE

Side-by-side comparison of viewing distance, PPI, and specifications

ASUS ROG Strix XG309CM

29.5" · 2560×1080 · IPS
Optimal Viewing Distance 93cm
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Dell UltraSharp U2725QE

27" · 3840×2160 · IPS
Optimal Viewing Distance 54cm
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Specification ASUS ROG Strix XG309CM 2022 Dell UltraSharp U2725QE 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) 120 Hz
Variable Refresh Rate (VRR) FreeSync Premium None
Response Time 1 ms GTG (Better) 5 ms GTG
HDR Certification None DisplayHDR 600
SDR Brightness 300 nits 600 nits (Better)
HDR Peak Brightness 300 nits 600 nits (Better)
Contrast Ratio 1:1,000 1:3,000 (Better)
Ports 1x HDMI · 1x DP · USB-C · USB Hub 1x HDMI · 1x DP · USB-C · USB Hub
USB-C Power Delivery 15 W 140 W (Better)
Color Gamut sRGB 110% (Better) sRGB 100% · DCI-P3 99% · Adobe RGB 94%
Year 2022 2025 (Better)

Summary

The Dell UltraSharp U2725QE has higher pixel density (163 PPI), making it sharper at close range.

The Dell UltraSharp U2725QE allows sitting closer (54cm) 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 Dell UltraSharp U2725QE?
The Dell UltraSharp U2725QE has 163 PPI compared to 94 PPI for the ASUS ROG Strix XG309CM.
Which has a closer optimal viewing distance?
The Dell UltraSharp U2725QE 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).

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