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| General Info | ||
|---|---|---|
| Model Number | Dell S2721DS | AOC U28P2A |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2020 | 2021 |
| Brand | Dell | AOC |
| Model Number | S2721DS | U28P2A |
| Display | ||
| Screen Size Class | 27" (inches) | 28" (inches) |
| Diagonal Size | 26.96 in 68.5 cm 684.7 mm 2.25 ft |
27.9 in 70.9 cm 708.538 mm 2.32 ft |
| Screen Width | 23.49 in 59.7 cm 596.736 mm 1.96 ft |
24.45 in 62.1 cm 620.928 mm 2.04 ft |
| Screen Height | 13.22 in 33.6 cm 335.664 mm 1.1 ft |
13.44 in 34.1 cm 341.28 mm 1.12 ft |
| Display Type | IPS | IPS |
| Display Bit Depth | 8 bits | 10 bits (8 bits + FRC) |
| Frame Rate Control | Yes | |
| Max Number of Colors | 16777216 | 1073741824 |
| Bits | 24 | 30 |
| Screen Aspect Ratio | 16:9 | 16:9 |
| Screen Resolution | 2560 x 1440 | 3840 x 2160 |
| Screen Pixel Pitch | 0.233 mm | 0.161 mm |
| Screen Pixel Density | 109 ppi | 157 ppi |
| Screen-to-Body Ratio | 89.83 % | 90.36 % |
| Backlight Source | W-LED | W-LED |
| sRGB | 99 % | 120 % |
| Adobe RGB 1998 | 89 % | |
| Screen Brightness | 350 cd/m² | 300 cd/m² |
| Static Screen Contrast | 1000 : 1 | 1000 : 1 |
| Dynamic Screen Contrast | 50000000 : 1 | |
| Screen Horizontal Viewing Angle | 178 ° | 178 ° |
| Screen Vertical Viewing Angle | 178 ° | 178 ° |
| Display Minimum Response Time | 4 ms | 4 ms |
| Display Average Response Time | 8 ms | |
| Display Coating | Anti-glare/Matte (3H) | Anti-glare/Matte (3H) |
| HDR | HDR10 | |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 2.18 in 5.5 cm 55.4 mm 0.18 ft |
1.94 in 4.9 cm 49.3 mm 0.16 ft |
| Case Weight | 4.4 kg 10 lbs |
4.77 kg 10 lbs |
| Case Width with Stand | 24.08 in 61.2 cm 611.6 mm 2.01 ft |
25.06 in 63.6 cm 636.4 mm 2.09 ft |
| Case Height with Stand | 15.75 in 40 cm 400.1 mm 1.31 ft |
15.91 in 40.4 cm 404 mm 1.33 ft |
| Case Depth with Stand | 6.88 in 17.5 cm 174.7 mm 0.57 ft |
7.88 in 20 cm 200.1 mm 0.66 ft |
| Case Weight with Stand | 6.2 kg 14 lbs |
6.76 kg 15 lbs |
| Case Color | Silver | Black |
| Hardware | ||
| Built-in Camera | No | No |
| Connectivity | 1 x 3.5 mm Audio Out 2 x HDMI 1.4 1 x DisplayPort 1.2 |
12 x DisplayPort 1.2 1 x 3.5 mm Audio Out 4 x USB 3.2 (Type-A; Gen 1; downstream) 2 x HDMI 2.0 |
| Audio | ||
| Audio Speakers | 2 x 3W | 2 x 3W |
| Features | ||
| Cool Features | Flicker-free technology Low Blue Light 3-sided bezeless design AMD FreeSync technology |
Low Blue Light Picture-by-Picture Wide Viewing Angle Picture-in-Picture Adaptive-Sync technology Flicker-free technology |
| Extra Features | Anti-theft stand lock slot - Kensington | Anti-theft stand lock slot - Kensington |
| Ergonomics | ||
| Case Width | 24.08 in 61.2 cm 611.6 mm 2.01 ft |
25.06 in 63.6 cm 636.4 mm 2.09 ft |
| Case Height | 14.35 in 36.5 cm 364.6 mm 1.2 ft |
14.51 in 36.9 cm 368.5 mm 1.21 ft |
| Vesa Mount Support | Yes | Yes |
| VESA Interface Standard Size | 100 x 100 | 100 x 100 |
| Removable VESA Stand | Yes | Yes |
| Height Adjustment | Yes | Yes |
| Height Adjustment Range | 110 mm 11 cm 4.3307 in 0.3609 ft |
130 mm 13 cm 5.1181 in 0.4265 ft |
| Landscape or Portrait Pivot Support | Yes | Yes |
| Left Pivot | 90 ° | 90 ° |
| Right Pivot | 90 ° | 90 ° |
| Left or Right Swivel Support | Yes | Yes |
| Left Swivel | 30 ° | 175 ° |
| Right Swivel | 30 ° | 175 ° |
| Forward and Backward Tilt Support | Yes | Yes |
| Forward Tilt | 5 ° | 5 ° |
| Backward Tilt | 21 ° | 35 ° |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 48 Hz - 75 Hz | 23 Hz - 75 Hz |
| Horizontal Digital Frequency | 30 kHz - 115 kHz | 30 kHz - 140 kHz |
| Screen Interpolation Measurement Unit | NULL | NULL |
| Accessories | ||
| Extras | HDMI cable | DisplayPort cable HDMI cable |
| Certificates and Standards | ||
| Licenses | ENERGY STAR 8.0 EPEAT RoHS TCO Certified TUV Flicker Free TUV Low Blue Light |
CCC CE CECP CEL CH RoHS cTUVus ISO9241-307 TÜV Low Blue Light Win10 |
| Usage and Storage Requirements | ||
| Safe Operating Temperature Level | 0 °C - 40 °C 32 °F - 104 °F |
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| Safe Operating Humidity Level | 10 % - 80 % | |
| Internal Storage Temperature | -20 °C - 60 °C -4 °F - 140 °F |
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| Internal Storage Humidity | 5 % - 90 % | |
| Max Operating Altitude | 5000 | |
| Max Storage Altitude | 12192 |
| Dell S2721DS | AOC U28P2A |
