AOC U27G4R 27" vs LG UltraGear 45GX950A 45"
Side-by-side comparison of viewing distance, PPI, and specifications
LG UltraGear 45GX950A 45"
44.5" · 5120×2160 · OLED
Optimal Viewing Distance 70cm
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| Specification | AOC U27G4R 27" 2024 | LG UltraGear 45GX950A 45" 2025 |
|---|---|---|
| Screen Size | 27" | 44.5" (Better) |
| Resolution | 3840×2160 | 5120×2160 (Better) |
| Pixel Density (PPI) | 163 (Better) | 125 |
| Optimal Viewing Distance | 54cm (Better) | 70cm |
| Panel Type | IPS | OLED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 21:9 |
| Refresh Rate | 160 Hz | 165 Hz (Better) |
| Variable Refresh Rate (VRR) | G-SYNC Compatible | FreeSync Premium Pro |
| Response Time | 0.5 ms MPRT | 0.0 ms GTG |
| HDR Certification | DisplayHDR 400 | DisplayHDR True Black 400 |
| SDR Brightness | 400 nits (Better) | 275 nits |
| HDR Peak Brightness | 400 nits | 1300 nits (Better) |
| Contrast Ratio | 1:1,000 | 1:1,500,000 (Better) |
| Ports | 2x HDMI · 1x DP · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | — | 90 W |
| Color Gamut | sRGB 124.7% · DCI-P3 95.9% · Adobe RGB 93.4% (Better) | sRGB 100% · DCI-P3 98% · Adobe RGB 94% |
| Year | 2024 | 2025 (Better) |
Summary
The AOC U27G4R 27" has higher pixel density (163 PPI), making it sharper at close range.
The AOC U27G4R 27" allows sitting closer (54cm) while maintaining retina quality.
The LG UltraGear 45GX950A 45" offers a larger 44.5" display for more immersive viewing.
Frequently Asked Questions
Which has better PPI: AOC U27G4R 27" or LG UltraGear 45GX950A 45"?
The AOC U27G4R 27" has 163 PPI compared to 125 PPI for the LG UltraGear 45GX950A 45".
Which has a closer optimal viewing distance?
The AOC U27G4R 27" requires 54cm vs 70cm for the LG UltraGear 45GX950A 45" 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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