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Compare Dell U2520D vs Dell P3221D vs Dell S2721DS

Connectivity

Ports
1x USB 3.0 (Type-C; 90W; DisplayPort), 1x USB 3.0 (Type-C; Gen 1; downstream; 15W), 1x DisplayPort 1.4 (in), 1x 3.5 mm Audio Out, 1x DisplayPort 1.4 (out), 1x HDMI 2.0 (CEC), 1x USB 3.0 (downstream; BC 1.2 charging at 2A), 2x USB 3.0 (Type-A; downstream)
1x USB 3.2 (Type-C; Gen 1; upstream; 65W; DP Alt Mode), 1x HDMI 2.0, 1x 3.5 mm Audio Out, 1x DisplayPort 1.2, 2x USB 2.0 (Type-A; downstream), 2x USB 3.2 (Type-A; Gen 1; downstream)
1x 3.5 mm Audio Out, 2x HDMI 1.4, 1x DisplayPort 1.2

Construction

Adjustment | Height
130 mm / 5.1181 in
150 mm / 5.9055 in
110 mm / 4.3307 in
Adjustment | Pivot
-90° ~ 90°
-90° ~ 90°
-90° ~ 90°
Adjustment | Swivel
-45° ~ 45°
-30° ~ 30°
-30° ~ 30°
Adjustment | Tilt
-5° ~ 21°
-5° ~ 21°
-5° ~ 21°
Camera
No
No
No
Colors
Black
Apollo Gray
Silver
Speakers
2x 3W
VESA Mount
100 x 100 mm
100 x 100 mm
100 x 100 mm

Dimensions

Bezels
91.23% screen-to-body ratio
91.93% screen-to-body ratio
89.83% screen-to-body ratio
Size | Depth
1.96 in / 49.9 mm w/o stand, 7.28 in / 185 mm w/ stand
2.18 in / 55.3 mm w/o stand, 9.06 in / 230 mm w/ stand
2.18 in / 55.4 mm w/o stand, 6.88 in / 174.7 mm w/ stand
Size | Height
13.07 in / 332.1 mm w/o stand, 15.07 in / 382.9 mm w/ stand
16.46 in / 418 mm w/o stand, 18.46 in / 468.8 mm w/ stand
14.35 in / 364.6 mm w/o stand, 15.75 in / 400.1 mm w/ stand
Size | Width
22.35 in / 567.7 mm
28.09 in / 713.4 mm
24.08 in / 611.6 mm
Weight
4.2 kg / 9 lbs w/o stand , 6.4 kg / 14 lbs w/ stand
6.4 kg / 14 lbs w/o stand , 11.2 kg / 25 lbs w/ stand
4.4 kg / 10 lbs w/o stand , 6.2 kg / 14 lbs w/ stand

Display

Aspect Ratio
16:9
16:9
16:9
Brightness
350 nits
350 nits
350 nits
Contrast Ratio
1000:1 (static)
1000:1 (static)
1000:1 (static)
Display Backlight
W-LED
W-LED
W-LED
Display Color Depth
8 bits, 16777216 colors
10 bits (8 bits + FRC), 1073741824 colors
8 bits, 16777216 colors
Display Diagonal
25" (24.98 in / 634.4 mm)
32" (31.53 in / 800.98 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
95% DCI-P3, 99% sRGB
99% sRGB
99% sRGB
Pixel Density
117 ppi
93 ppi
109 ppi
Pixel Pitch
0.216 mm
0.273 mm
0.233 mm
Refresh Rate
60 Hz
56 Hz ~ 76 Hz
48 Hz ~ 75 Hz
Resolution
QHD (2560x1440)
QHD (2560x1440)
QHD (2560x1440)
Response Time
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
4 ms (min) / 8 ms (avg)
Viewing Angle
178° H / 178° V
178° H / 178° V
178° H / 178° V

Function

HDR
DisplayHDR 400
Licenses
BFR-free, CEL, ENERGY STAR 6.0, EPEAT, Mercury-free, NFPA 99, PVC-free, RoHS Compliant, TCO Certified Displays
ENERGY STAR 8.0, EPEAT, RoHS, TCO Certified, TUV Flicker Free, TUV Low Blue Light
ENERGY STAR 8.0, EPEAT, RoHS, TCO Certified, TUV Flicker Free, TUV Low Blue Light
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
Variable Framerate
AMD FreeSync
Video
Flicker-free technology, Low Blue Light
Low Blue Light, 3-sided bezeless design, Flicker-free technology
Flicker-free technology, Low Blue Light, 3-sided bezeless design

Performance

Power Consumption
24 W (average) / 200 W (max) / 0.3 W (sleep) / 0.3 W (off)
50.2 W (average) / 145 W (max) / 20.6 W (eco) / 0.3 W (sleep) / 0.3 W (off)
19 W (average) / 40 W (max) / 17.5 W (eco) / 0.3 W (sleep) / 0.3 W (off)
Power Supply
65 W Power Delivery via USB-C

Production

Accessory
DisplayPort cable, USB Type-C to Type-C cable, USB Type-C to Type-A cable
DisplayPort cable, USB Type-C to Type-A cable, USB Type-C to Type-C cable
HDMI cable
Debut
2020
2020
2020

Reviews

Neofiliac score
83%
72%
50%
Pros
  • DisplayHDR 400
  • Rich color reproduction
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • High 91.23 % screen-to-body ratio
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • High 91.93 % screen-to-body ratio
  • Integrated USB-C hub
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • Build-in speakers included
Cons
  • 8-bit display panel
  • No publicized HDR support
  • No publicized HDR support
  • 8-bit display panel

Price

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