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Compare Dell U2421HE vs Dell U3023E vs Dell U2720Q

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 2; 10 Gbps upstream; 90W; Dp Alt Mode), 1x USB 3.2 (Type-C; Gen 2; upstream), 1x HDMI 1.4, 1x DisplayPort 1.4 (DSC), 1x DisplayPort 1.4 (out with MST), 1x Ethernet RJ45 (MAC Address pass-through; PXE Boot; Wake-on-LAN), 4x USB 3...
1x USB 3.0 (Type-C; 90W; DisplayPort), 1x USB 3.0 (Type-C; downstream; 15W), 1x DisplayPort 1.4, 1x 3.5 mm Audio Out, 1x HDMI 2.0 (CEC), 1x USB 3.0 (downstream; BC 1.2 charging at 2A), 2x USB 3.0 (Type-A; downstream)

Construction

Adjustment | Height
130 mm / 5.1181 in
150 mm / 5.9055 in
130 mm / 5.1181 in
Adjustment | Pivot
-90° ~ 90°
-90° ~ 90°
-90° ~ 90°
Adjustment | Swivel
-40° ~ 40°
-30° ~ 30°
-45° ~ 45°
Adjustment | Tilt
-5° ~ 21°
-5° ~ 21°
-5° ~ 21°
Camera
No
No
No
Colors
Black
Black and Silver
Black
VESA Mount
100 x 100 mm
100 x 100 mm
100 x 100 mm

Dimensions

Bezels
92.49% screen-to-body ratio
93.61% screen-to-body ratio
92.04% screen-to-body ratio
Size | Depth
1.54 in / 39 mm w/o stand, 6.5 in / 165 mm w/ stand
2.09 in / 53 mm w/o stand, 9.06 in / 230 mm w/ stand
1.96 in / 49.7 mm w/o stand, 7.28 in / 185 mm w/ stand
Size | Height
12.35 in / 313.7 mm w/o stand, 13.72 in / 348.4 mm w/ stand
16.48 in / 418.6 mm w/o stand, 18.61 in / 472.7 mm w/ stand
14.02 in / 356 mm w/o stand, 15.56 in / 395.2 mm w/ stand
Size | Width
21.2 in / 538.5 mm
25.82 in / 655.9 mm
24.07 in / 611.3 mm
Weight
3.37 kg / 7 lbs w/o stand , 5.32 kg / 12 lbs w/ stand
6.48 kg / 14 lbs w/o stand , 11.13 kg / 24 lbs w/ stand
4.4 kg / 10 lbs w/o stand , 6.6 kg / 15 lbs w/ stand

Display

Aspect Ratio
16:9
16:10
16:9
Brightness
250 nits
350 nits
350 nits
Contrast Ratio
1000:1 (static)
1000:1 (static), 2000000:1 (dynamic)
1300:1 (static)
Display Backlight
W-LED
W-LED
W-LED
Display Color Depth
8 bits, 16777216 colors
10 bits, 1073741824 colors
10 bits (8 bits + FRC), 1073741824 colors
Display Diagonal
24" (23.81 in / 604.7 mm)
30" (29.77 in / 756.2 mm)
27" (26.96 in / 684.7 mm)
Display Type
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
Gamut
89% DCI-P3, 99% sRGB
95% DCI-P3, 100% sRGB
95% DCI-P3, 99% sRGB
Pixel Density
92 ppi
101 ppi
163 ppi
Pixel Pitch
0.275 mm
0.251 mm
0.155 mm
Refresh Rate
56 Hz ~ 76 Hz
56 Hz ~ 76 Hz
60 Hz
Resolution
FHD (1920x1080)
WQXGA (2560x1600)
4K (3840x2160)
Response Time
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
Viewing Angle
178° H / 178° V
178° H / 178° V
178° H / 178° V

Function

HDR
DisplayHDR 400
Licenses
ENERGY STAR, EPEAT, TCO Certified, RoHS, NFPA 99
Energy Star, EPEAT Gold, RoHS, TCO Certified, TCO Edge, TUV Rheinland Low Blue Light Certified (Hardware Solution)
BFR-free, CEL, ENERGY STAR 6.0, EPEAT, Mercury-free, NFPA 99, PVC-free, RoHS Compliant, TCO
Operating Humidity
10 % ~ 80 %
10 % ~ 80 %
10 % ~ 80 %
Operating Temperature
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
Video
Flicker-free technology, Low Blue Light
Display Stream Compression (DSC), Flicker-free technology, Low Blue Light, Picture-in-Picture, Picture-by-Picture, KVM Switch, ComfortView Plus, Dell Display Manager (DDM) Compatibility
Flicker-free technology, Low Blue Light

Performance

Power Consumption
17.5 W (average) / 140 W (max) / 12.87 W (eco) / 0.3 W (sleep) / 0.3 W (off)
26.6 W (average) / 210 W (max) / 0.3 W (sleep) / 0.2 W (off)
33 W (average) / 200 W (max) / 0.3 W (sleep) / 0.3 W (off)

Production

Accessory
DisplayPort cable, USB Type-C to Type-C cable
DisplayPort cable, USB Gen 2 Type-A to Type-C cable, USB Gen 2 Type-C PD 3.0 cable
DisplayPort cable, USB Type-C to Type-C cable, USB Type-C to Type-A cable
Debut
2020
2022
2020

Reviews

Neofiliac score
50%
83%
90%
Pros
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • High 92.49 % screen-to-body ratio
  • Rich color reproduction
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • High 93.61 % screen-to-body ratio
  • USB-C hub
  • DisplayHDR 400
  • Rich color reproduction
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1300:1 contrast ratio
  • 10-bit display panel
  • High 92.04 % screen-to-body ratio
  • Integrated USB-C hub
Cons
  • No publicized HDR support
  • 8-bit display panel
  • Display panel not very bright
  • No publicized HDR support

Price

Offers (incl. referral links)
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