Compare Dell U2721DE vs Dell U2421E
Connectivity
Ports
1x USB 3.1 (Type-C; upstream; DP; 65W), 1x Ethernet RJ45, 1x DisplayPort 1.4, 1x 3.5 mm Audio Out, 1x DisplayPort 1.4 (Output MST), 1x HDMI 1.4, 2x USB 3.0 (downstream), 2x USB 3.0 (downstream; BC 1.2)
1x USB 3.2 (Type-C; Gen 1; upstream; 90W; DP Alt Mode), 1x Ethernet RJ45, 1x DisplayPort 1.4, 1x 3.5 mm Audio Out, 1x DisplayPort 1.4 (Output MST), 1x HDMI 1.4, 4x USB 3.2 (Type-A; Gen 1; downstream; 2x BC 1.2), 1x USB 3.2 (Type-C; Gen 1; downstream; 15W)
Construction
Adjustment | Height
130 mm / 5.1181 in
150 mm / 5.9055 in
Adjustment | Pivot
-90° ~ 90°
-90° ~ 90°
Adjustment | Swivel
-40° ~ 40°
-45° ~ 45°
Adjustment | Tilt
-5° ~ 21°
-5° ~ 21°
Camera
No
No
Colors
Black
Black
VESA Mount
100 x 100 mm
100 x 100 mm
Dimensions
Bezels
92.16% screen-to-body ratio
100.87% screen-to-body ratio
Size | Depth
1.54 in / 39 mm w/o stand, 7.09 in / 180 mm w/ stand
1.54 in / 39 mm w/o stand, 6.81 in / 173 mm w/ stand
Size | Height
13.98 in / 355 mm w/o stand, 15.36 in / 390.2 mm w/ stand
12.35 in / 313.7 mm w/o stand, 14.33 in / 364 mm w/ stand
Size | Width
24.1 in / 612.2 mm
20.9 in / 530.8 mm
Weight
4.19 kg / 9 lbs w/o stand , 6.24 kg / 14 lbs w/ stand
4 kg / 9 lbs w/o stand , 6.1 kg / 13 lbs w/ stand
Display
Aspect Ratio
16:9
16:10
Brightness
350 nits
350 nits
Contrast Ratio
1000:1 (static)
1000:1 (static)
Display Backlight
W-LED
W-LED
Display Color Depth
8 bits, 16777216 colors
8 bits (6 bits + FRC), 16777216 colors
Display Diagonal
27" (26.96 in / 684.7 mm)
24" (24.06 in / 611 mm)
Display Type
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
Gamut
89% DCI-P3, 99% sRGB
99% sRGB
Pixel Density
109 ppi
94 ppi
Pixel Pitch
0.233 mm
0.275 mm
Refresh Rate
56 Hz ~ 76 Hz
60 Hz
Resolution
QHD (2560x1440)
WUXGA (1920x1200)
Response Time
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
Viewing Angle
178° H / 178° V
178° H / 178° V
Function
Licenses
ENERGY STAR, EPEAT, TCO Certified, RoHS, NFPA 99
ENERGY STAR, EPEAT Golf, TCO Certified, TUV Rheinland Low Blue Light Certified
Operating Humidity
10 % ~ 80 %
10 % ~ 80 %
Operating Temperature
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
Video
Flicker-free technology, Low Blue Light
Easy Arrange, Flicker-free technology, Low Blue Light, Infinity Edge design, ComfortView Plus, Dell Display Manager
Performance
Power Consumption
33.2 W (average) / 160 W (max) / 19.9 W (eco) / 0.3 W (sleep) / 0.3 W (off)
30 W (average) / 186 W (max)
Production
Accessory
DisplayPort cable, USB Type-C to Type-C cable
DisplayPort cable, USB Type-C to Type-A cable, USB Type-C to Type-C cable
Debut
2020
2020
Reviews
Neofiliac score
56%
56%
Pros
- Stand with tilt, swivel, pivot, and height adjustments
- High 1000:1 contrast ratio
- High 92.16 % screen-to-body ratio
- Stand with tilt, swivel, pivot, and height adjustments
- High 1000:1 contrast ratio
- High 100.87 % screen-to-body ratio
Cons
- No publicized HDR support
- 8-bit display panel
- No publicized HDR support
- 8-bit display panel
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