0 Compare Dell S2721HN vs Dell U2421E - DisplayDB

Premium subscription

Limited offer: $9.99 FREE

Subscription benefits:

  • Receive exclusive deals
  • Receive promo codes for monitors and TVs
  • Be the first to read our premium content

As Amazon associates we earn from qualifying purchases.

Comparison between Dell S2721HN vs Dell U2421E

General Info
Model Number Dell S2721HN Dell U2421E
Price
Type Monitor Monitor
Year 2020 2020
Brand Dell Dell
Model Number S2721HN U2421E
Alias S2721NX
Display
Screen Size Class 27" (inches) 24" (inches)
Diagonal Size 27 in
68.6 cm
685.891 mm
2.25 ft
24.06 in
61.1 cm
611 mm
2 ft
Screen Width 23.54 in
59.8 cm
597.89 mm
1.96 ft
20.41 in
51.8 cm
518.4 mm
1.7 ft
Screen Height 13.24 in
33.6 cm
336.312 mm
1.1 ft
12.76 in
32.4 cm
324 mm
1.06 ft
Display Type IPS IPS
Display Bit Depth 8 bits 8 bits (6 bits + FRC)
Frame Rate Control Yes
Max Number of Colors 16777216 16777216
Bits 24 24
Screen Aspect Ratio 16:9 16:10
Screen Resolution 1920 x 1080 1920 x 1200
Screen Pixel Pitch 0.311 mm 0.275 mm
Screen Pixel Density 81 ppi 94 ppi
Screen-to-Body Ratio 90.67 % 100.87 %
Backlight Source W-LED W-LED
sRGB 99 %
NTSC 1953 72 %
Screen Brightness 300 cd/m² 350 cd/m²
Static Screen Contrast 1000 : 1 1000 : 1
Screen Horizontal Viewing Angle 178 ° 178 °
Screen Vertical Viewing Angle 178 ° 178 °
Display Minimum Response Time 4 ms 5 ms
Display Average Response Time 8 ms 8 ms
Display Coating Anti-glare/Matte (3H) Anti-glare/Matte (3H)
3D No No
Size, weight, color
Case Depth 2.13 in
5.4 cm
54 mm
0.18 ft
1.54 in
3.9 cm
39 mm
0.13 ft
Case Weight 4.3 kg
9 lbs
4 kg
9 lbs
Case Width with Stand 24.01 in
61 cm
609.9 mm
2 ft
20.9 in
53.1 cm
530.8 mm
1.74 ft
Case Height with Stand 17.85 in
45.3 cm
453.3 mm
1.49 ft
14.33 in
36.4 cm
364 mm
1.19 ft
Case Depth with Stand 7.35 in
18.7 cm
186.8 mm
0.61 ft
6.81 in
17.3 cm
173 mm
0.57 ft
Case Weight with Stand 5.2 kg
11 lbs
6.1 kg
13 lbs
Case Color Black, Silver Black
Hardware
Built-in Camera No No
Connectivity 2 x HDMI 1.4
1 x 3.5 mm Audio Out
1 x USB 3.2 (Type-C; Gen 1; upstream; 90W; DP Alt Mode)
1 x Ethernet RJ45
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out
1 x DisplayPort 1.4 (Output MST)
1 x HDMI 1.4
4 x USB 3.2 (Type-A; Gen 1; downstream; 2x BC 1.2)
1 x USB 3.2 (Type-C; Gen 1; downstream; 15W)
Audio
Features
Cool Features Flicker-free technology
Low Blue Light
3-sided bezeless design
AMD FreeSync technology
Easy Arrange
Flicker-free technology
Low Blue Light
Infinity Edge design
ComfortView Plus
Dell Display Manager
Extra Features Anti-theft stand lock slot - Kensington
S2721HN - silver
S2721NX - black
Security lock slot
Ergonomics
Case Width 24.01 in
61 cm
609.9 mm
2 ft
20.9 in
53.1 cm
530.8 mm
1.74 ft
Case Height 14.31 in
36.4 cm
363.6 mm
1.19 ft
12.35 in
31.4 cm
313.7 mm
1.03 ft
Vesa Mount Support Yes Yes
VESA Interface Standard Size 100 x 100 100 x 100
Removable VESA Stand Yes Yes
Height Adjustment No Yes
Height Adjustment Range 150 mm
15 cm
5.9055 in
0.4921 ft
Landscape or Portrait Pivot Support No Yes
Left Pivot 90 °
Right Pivot 90 °
Left or Right Swivel Support No Yes
Left Swivel 45 °
Right Swivel 45 °
Forward and Backward Tilt Support Yes Yes
Forward Tilt 5 ° 5 °
Backward Tilt 21 ° 21 °
Frequency and Interpolation
Vertical Digital Frequency 48 Hz - 75 Hz 60 Hz
Horizontal Digital Frequency 30 kHz - 83 kHz 30 kHz - 83 kHz
Screen Interpolation Measurement Unit NULL NULL
Accessories
Extras HDMI cable DisplayPort cable
USB Type-C to Type-A cable
USB Type-C to Type-C cable
Certificates and Standards
Licenses ENERGY STAR 8.0
EPEAT
RoHS
TCO Certified
TUV Flicker Free
TUV Low Blue Light
ENERGY STAR
EPEAT Golf
TCO Certified
TUV Rheinland Low Blue Light Certified
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 S2721HN Dell U2421E