ASUS ROG Swift PG27AQDP 27" vs Dell U3421WE 34"
Side-by-side comparison of viewing distance, PPI, and specifications
ASUS ROG Swift PG27AQDP 27"
26.5" · 2560×1440 · OLED
Optimal Viewing Distance 79cm
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Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Swift PG27AQDP 27"111 PPI #45
Dell U3421WE 34"110 PPI #47
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Swift PG27AQDP 27"1300 nits #3
Dell U3421WE 34"300 nits #65
250 nits2000 nits
DCI-P3 Color Gamut63in category
ASUS ROG Swift PG27AQDP 27"99% #2
Dell U3421WE 34"95% #48
79%100%
Refresh Rate
ASUS ROG Swift PG27AQDP 27"480 Hz
Dell U3421WE 34"60 Hz
StandardHighUltra
Summary
- Sharpness: advantage ASUS ROG Swift PG27AQDP 27" — Neither screen reaches retina quality at 65cm. The ASUS ROG Swift PG27AQDP 27" gets there at 79cm vs 80cm for the Dell U3421WE 34".
- Brightness: advantage Dell U3421WE 34" — The Dell U3421WE 34" is 20% brighter in SDR (300 vs 250 nits), a noticeable difference for outdoor readability. HDR peak: 300 vs 1300 nits.
Key Differences
| Specification | ASUS ROG Swift PG27AQDP 27" | Dell U3421WE 34" |
|---|---|---|
| Pixel Density (PPI) | 111 | 110 |
| Optimal Viewing Distance | 79cm | 80cm |
| Refresh Rate | 480 Hz | 60 Hz |
| Response Time | 0.0 ms GTG | 5 ms GTG |
| HDR Peak Brightness | 1300 nits | 300 nits |
| Contrast Ratio | 1:1,500,000 | 1:1,000 |
| Color Gamut | sRGB 135% · DCI-P3 99% · Adobe RGB 96% | sRGB 99% · DCI-P3 95% |
| Year | 2024 | 2021 |
| Screen Size | 26.5" | 34" |
| Resolution | 2560×1440 | 3440×1440 |
| SDR Brightness | 250 nits | 300 nits |
All specifications
| Specification | ASUS ROG Swift PG27AQDP 27" 2024 | Dell U3421WE 34" 2021 |
|---|---|---|
| Screen Size | 26.5" | 34" (Better) |
| Resolution | 2560×1440 | 3440×1440 (Better) |
| Pixel Density (PPI) | 111 (Better) | 110 |
| Optimal Viewing Distance | 79cm (Better) | 80cm |
| Panel Type | OLED | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 21:9 |
| Refresh Rate | 480 Hz (Better) | 60 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | None |
| Response Time | 0.0 ms GTG (Better) | 5 ms GTG |
| HDR Certification | DisplayHDR True Black 400 | None |
| SDR Brightness | 250 nits | 300 nits (Better) |
| HDR Peak Brightness | 1300 nits (Better) | 300 nits |
| Contrast Ratio | 1:1,500,000 (Better) | 1:1,000 |
| Ports | 2x HDMI · 1x DP · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | — | 90 W |
| Color Gamut | sRGB 135% · DCI-P3 99% · Adobe RGB 96% (Better) | sRGB 99% · DCI-P3 95% |
| Year | 2024 (Better) | 2021 |
Frequently Asked Questions
Which has better PPI: ASUS ROG Swift PG27AQDP 27" or Dell U3421WE 34"?
The ASUS ROG Swift PG27AQDP 27" has 111 PPI compared to 110 PPI for the Dell U3421WE 34".
Which has a closer optimal viewing distance?
The ASUS ROG Swift PG27AQDP 27" requires 79cm vs 80cm for the Dell U3421WE 34" to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Swift PG27AQDP 27" 2024 · 111 PPI · 26.5" · 480 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs Dell U3421WE 34" 2021 · 110 PPI · 34" · 60 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Swift PG27AQDP 27" 2024 · 111 PPI · 26.5" · 480 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs Dell U3421WE 34" 2021 · 110 PPI · 34" · 60 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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