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| General Info | ||
|---|---|---|
| Model Number | Dell U3821DW | Dell Alienware AW5520QF |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2021 | 2019 |
| Brand | Dell | Dell |
| Model Series | UltraSharp | |
| Model Number | U3821DW | Alienware AW5520QF |
| Display | ||
| Screen Size Class | 38" (inches) | 55" (inches) |
| Diagonal Size | 37.52 in 95.3 cm 952.9 mm 3.13 ft |
54.64 in 138.8 cm 1387.8 mm 4.55 ft |
| Screen Width | 35.04 in 89 cm 890 mm 2.92 ft |
47.62 in 121 cm 1209.6 mm 3.97 ft |
| Screen Height | 15.27 in 38.8 cm 387.8 mm 1.27 ft |
26.79 in 68 cm 680.4 mm 2.23 ft |
| Display Curvature | 2300 | |
| Display Type | IPS | OLED |
| Display Bit Depth | 10 bits | 10 bits |
| Frame Rate Control | No | |
| Max Number of Colors | 1073741824 | 1073741824 |
| Bits | 30 | 30 |
| Screen Aspect Ratio | 24:10 | 16:9 |
| Screen Resolution | 3840 x 1600 | 3840 x 2160 |
| Screen Pixel Pitch | 0.229 mm | 0.315 mm |
| Screen Pixel Density | 109 ppi | 80 ppi |
| Screen-to-Body Ratio | 98.38 % | 93.61 % |
| Backlight Source | W-LED | |
| DCI P3 | 95% | 98.5% |
| sRGB | 100 % | |
| Screen Brightness | 300 cd/m² | 130 cd/m² |
| Max Screen Brightness | 400 cd/m² | |
| Static Screen Contrast | 1000 : 1 | 130000 : 1 |
| Screen Horizontal Viewing Angle | 178 ° | 120 ° |
| Screen Vertical Viewing Angle | 178 ° | 120 ° |
| Display Minimum Response Time | 5 ms | 0.5 ms |
| Display Average Response Time | 8 ms | |
| Display Coating | Anti-glare/Matte (3H) | Anti-glare/Matte (2H) |
| HDR | DisplayHDR 600 | |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 4.03 in 10.2 cm 102.4 mm 0.34 ft |
3.16 in 8 cm 80.3 mm 0.26 ft |
| Case Weight | 8.8 kg 19 lbs |
25.5 kg 56 lbs |
| Case Width with Stand | 35.21 in 89.4 cm 894.3 mm 2.93 ft |
48.26 in 122.6 cm 1225.9 mm 4.02 ft |
| Case Height with Stand | 17.47 in 44.4 cm 443.8 mm 1.46 ft |
30.34 in 77.1 cm 770.6 mm 2.53 ft |
| Case Depth with Stand | 9.89 in 25.1 cm 251.2 mm 0.82 ft |
10.39 in 26.4 cm 263.91 mm 0.87 ft |
| Case Weight with Stand | 13.6 kg 30 lbs |
26.1 kg 57 lbs |
| Case Color | Black | Black, Silver |
| Hardware | ||
| Built-in Camera | No | No |
| Connectivity | 1 x USB 3.2 (Type-C; upstream; 90W; DP Alt Mode) 4 x USB 3.2 (Type-A; Gen 1; downstream) 2 x HDMI 2.0 1 x 3.5 mm Audio Out (line-out for speakers) 1 x DisplayPort 1.4 1 x Ethernet RJ45 1 x USB 3.2 (Type-B; Gen 1; upstream) 1 x USB 3.2 (Type-C; downstream) |
1 x USB 3.0 (downstream; BC 1.2) 3 x HDMI 2.0 1 x S/PDIF 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 3 x USB 3.0 (downstream) 1 x USB 3.0 (upstream) |
| Audio | ||
| Audio Speakers | 2 x 9W | 2 x 14W |
| Features | ||
| Cool Features | Low Blue Light Picture-by-Picture Picture-in-Picture Flicker-free technology KVM Switch |
AMD FreeSync technology |
| Extra Features | Security lock slot | |
| Ergonomics | ||
| Case Width | 35.21 in 89.4 cm 894.3 mm 2.93 ft |
48.26 in 122.6 cm 1225.9 mm 4.02 ft |
| Case Height | 15.44 in 39.2 cm 392.3 mm 1.29 ft |
28.24 in 71.7 cm 717.2 mm 2.35 ft |
| Vesa Mount Support | Yes | Yes |
| VESA Interface Standard Size | 100 x 100 | 200 x 200 |
| Removable VESA Stand | Yes | Yes |
| Height Adjustment | Yes | No |
| Height Adjustment Range | 120 mm 12 cm 4.7244 in 0.3937 ft |
|
| Landscape or Portrait Pivot Support | No | No |
| Left or Right Swivel Support | Yes | No |
| Left Swivel | 30 ° | |
| Right Swivel | 30 ° | |
| Forward and Backward Tilt Support | Yes | No |
| Forward Tilt | 5 ° | |
| Backward Tilt | 21 ° | |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 56 Hz - 76 Hz | 40 Hz - 120 Hz |
| Horizontal Digital Frequency | 30 kHz - 100 kHz | 27 kHz - 269 kHz |
| Screen Interpolation Measurement Unit | NULL | |
| Accessories | ||
| Extras | DisplayPort cable HDMI cable USB Type-C cable USB Type-B 3.2 Gen 1 cable |
DisplatPort cable HDMI cable USB 3.0 cable VESA adapter |
| Certificates and Standards | ||
| Licenses | ENERGY STAR 8.0 EPEAT Gold RoHS TAA Availability TCO Certified Displays |
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| Usage and Storage Requirements | ||
| Safe Operating Temperature Level | 0 °C - 40 °C 32 °F - 104 °F |
0 °C - 40 °C 32 °F - 104 °F |
| Safe Operating Humidity Level | 10 % - 80 % | 10 % - 80 % |
| Internal Storage Temperature | -20 °C - 60 °C -4 °F - 140 °F |
-20 °C - 60 °C -4 °F - 140 °F |
| Internal Storage Humidity | 5 % - 90 % | 5 % - 90 % |
| Max Operating Altitude | 5000 | 5000 |
| Max Storage Altitude | 12192 | 12192 |
| Dell U3821DW | Dell Alienware AW5520QF |
