AOC U27G4R 27" vs ASUS ROG Swift OLED PG34WCDM 34"
Side-by-side comparison of viewing distance, PPI, and specifications
ASUS ROG Swift OLED PG34WCDM 34"
33.94" · 3440×1440 · OLED
Optimal Viewing Distance 80cm
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Category Ranking
Pixel Density (PPI)67in category
AOC U27G4R 27"163 PPI #20
ASUS ROG Swift OLED PG34WCDM 34"110 PPI #47
93 PPI224 PPI
HDR Peak Brightness67in category
AOC U27G4R 27"400 nits #51
ASUS ROG Swift OLED PG34WCDM 34"1300 nits #3
250 nits2000 nits
DCI-P3 Color Gamut63in category
AOC U27G4R 27"95.9% #47
ASUS ROG Swift OLED PG34WCDM 34"99% #2
79%100%
Refresh Rate
AOC U27G4R 27"160 Hz
ASUS ROG Swift OLED PG34WCDM 34"240 Hz
StandardHighUltra
Summary
- Sharpness: advantage AOC U27G4R 27" — At 65cm, the AOC U27G4R 27" is retina (163 PPI) while the ASUS ROG Swift OLED PG34WCDM 34" is not — you need to sit at least 80cm away for pixel-free viewing.
- Brightness: advantage AOC U27G4R 27" — The AOC U27G4R 27" is 48% brighter in SDR (400 vs 270 nits), a noticeable difference for outdoor readability. HDR peak: 400 vs 1300 nits.
Key Differences
| Specification | AOC U27G4R 27" | ASUS ROG Swift OLED PG34WCDM 34" |
|---|---|---|
| Resolution | 3840×2160 | 3440×1440 |
| Pixel Density (PPI) | 163 | 110 |
| Optimal Viewing Distance | 54cm | 80cm |
| SDR Brightness | 400 nits | 270 nits |
| Screen Size | 27" | 33.94" |
| Refresh Rate | 160 Hz | 240 Hz |
| HDR Peak Brightness | 400 nits | 1300 nits |
| Contrast Ratio | 1:1,000 | 1:1,500,000 |
| Color Gamut | sRGB 124.7% · DCI-P3 95.9% · Adobe RGB 93.4% | sRGB 135% · DCI-P3 99% · Adobe RGB 95% |
All specifications
| Specification | AOC U27G4R 27" 2024 | ASUS ROG Swift OLED PG34WCDM 34" 2024 |
|---|---|---|
| Screen Size | 27" | 33.94" (Better) |
| Resolution | 3840×2160 (Better) | 3440×1440 |
| Pixel Density (PPI) | 163 (Better) | 110 |
| Optimal Viewing Distance | 54cm (Better) | 80cm |
| Panel Type | IPS | OLED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 21:9 |
| Refresh Rate | 160 Hz | 240 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) | 270 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% | sRGB 135% · DCI-P3 99% · Adobe RGB 95% (Better) |
| Year | 2024 | 2024 |
Frequently Asked Questions
Which has better PPI: AOC U27G4R 27" or ASUS ROG Swift OLED PG34WCDM 34"?
The AOC U27G4R 27" has 163 PPI compared to 110 PPI for the ASUS ROG Swift OLED PG34WCDM 34".
Which has a closer optimal viewing distance?
The AOC U27G4R 27" requires 54cm vs 80cm for the ASUS ROG Swift OLED PG34WCDM 34" to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs AOC U27G4R 27" 2024 · 163 PPI · 27" · 160 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Swift OLED PG34WCDM 34" 2024 · 110 PPI · 33.94" · 240 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs AOC U27G4R 27" 2024 · 163 PPI · 27" · 160 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Swift OLED PG34WCDM 34" 2024 · 110 PPI · 33.94" · 240 Hz
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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