Comparison between:
- 27" Dell S2721HGF
- 28" Samsung U28E590D
- 28" Lenovo L28u-30

Brand, series, model

Information about the brand, series, model and model aliases.

Dell S2721HGFSamsung U28E590DLenovo L28u-30
Dell S2721HGFSamsung U28E590DLenovo L28u-30
Model alias-LU28E590DS/ZA65FAGAC2
Model year202020152020

Display

Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.

Size class27 in28 in28 in
Diagonal684.7 mm
68.47 cm
26.9567 in
2.2464 ft
711.2 mm
71.12 cm
28 in
2.3333 ft
685.8 mm
68.58 cm
27 in
2.25 ft
Width596.736 mm
59.6736 cm
23.4935 in
1.9578 ft
620.928 mm
62.0928 cm
24.446 in
2.0372 ft
631.928 mm
63.1928 cm
24.8791 in
2.0733 ft
Height335.664 mm
33.5664 cm
13.2151 in
1.1013 ft
341.28 mm
34.128 cm
13.4362 in
1.1197 ft
359.78 mm
35.978 cm
14.1646 in
1.1804 ft
Radius of curvature1500 mm
150 cm
59.0551 in
4.9213 ft
--
Panel manufacturer-Innolux-
Panel model-M280DGJ-L30-
Panel typeVATNIPS
Panel bit depth8 bits10 bits (8 bits + FRC)10 bits (8 bits + FRC)
FRC-YesYes
Colors16777216 colors
24 bits
1073741824 colors
30 bits
1073741824 colors
30 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
Resolution1920 x 1080 pixels
Full HD / 1080p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
Pixel pitch0.311 mm
0.0311 cm
0.0122 in
0.001 ft
0.16 mm
0.016 cm
0.0063 in
0.0005 ft
0.161 mm
0.0161 cm
0.0063 in
0.0005 ft
Pixel density81 ppi
32 ppcm
157 ppi
61 ppcm
154 ppi
60 ppcm
Display area90.42 %84.09 %95.52 %
BacklightW-LEDW-LEDW-LED
sRGB-98 %99 %
Adobe RGB (1998)-67 %-
NTSC (1953)83 %72 %-
DCI P3--90 %
Brightness350 cd/m²370 cd/m²250 cd/m²
Peak brightness--300 cd/m²
Static contrast3000 : 11000 : 11000 : 1
Dynamic contrast-100000000 : 13000000 : 1
Horizontal viewing angle178 °170 °178 °
Vertical viewing angle178 °160 °178 °
Minimum response time4 ms
0.0040 s
1 ms
0.0010 s
4 ms
0.0040 s
Average response time-3.5 ms
0.0035 s
6 ms
0.0060 s
Maximum response time-23 ms
0.0230 s
-
Input lag9 ms
0.0090 s
15 ms
0.0150 s
-
CoatingAnti-glare/Matte (3H)Anti-glare/Matte (3H)Anti-glare/Matte
Response time - 1 ms (MPRT - Motion Picture Response Time)--

3D

3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.

3DNoNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (digital)-30 kHz - 135 kHz-
Vertical frequency (digital)48 Hz - 144 Hz24 Hz - 75 Hz-
-DisplayPort - 3840 x 2160 @ 60 Hz
HDMI1 - 3840 x 2160 @ 30 Hz
HDMI2 - 3840 x 2160 @ 60 Hz
-

Power supply and consumption

Information about the power supply and consumption, energy efficiency class, etc.

110V100 V - 120 V100 V - 120 V100 V - 120 V
220V220 V - 240 V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz
Electric current (A)--1.5 A
Power consumption (off)-0.3 W0.3 W
Power consumption (sleep)0.5 W0.45 W0.3 W
Power consumption (eco)-29.6 W-
Power consumption (average)27 W38 W31 W
Power consumption (maximum)46 W45 W48 W
Power consumption (annual)-85 kWh-
Energy efficiency class-B-

Dimensions, weight and color

Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.

Width608.4 mm
60.84 cm
23.9528 in
1.9961 ft
660.9 mm
66.09 cm
26.0197 in
2.1683 ft
636.94 mm
63.694 cm
25.0764 in
2.0897 ft
Height364.1 mm
36.41 cm
14.3346 in
1.1946 ft
381.3 mm
38.13 cm
15.0118 in
1.251 ft
373.68 mm
37.368 cm
14.7118 in
1.226 ft
Depth96.3 mm
9.63 cm
3.7913 in
0.3159 ft
73.5 mm
7.35 cm
2.8937 in
0.2411 ft
49.2 mm
4.92 cm
1.937 in
0.1614 ft
Weight4.06 kg
8.95 lbs
4.7 kg
10.36 lbs
4.58 kg
10.1 lbs
Width with stand608.4 mm
60.84 cm
23.9528 in
1.9961 ft
660.9 mm
66.09 cm
26.0197 in
2.1683 ft
636.94 mm
63.694 cm
25.0764 in
2.0897 ft
Height with stand493.2 mm
49.32 cm
19.4173 in
1.6181 ft
468.5 mm
46.85 cm
18.4449 in
1.5371 ft
450.82 mm
45.082 cm
17.7488 in
1.4791 ft
Depth with stand190.4 mm
19.04 cm
7.4961 in
0.6247 ft
187.1 mm
18.71 cm
7.3661 in
0.6138 ft
219.98 mm
21.998 cm
8.6606 in
0.7217 ft
Weight with stand8.86 kg
19.53 lbs
5.28 kg
11.64 lbs
5.2 kg
11.46 lbs
Box width-740 mm
74 cm
29.1339 in
2.4278 ft
738 mm
73.8 cm
29.0551 in
2.4213 ft
Box height-461 mm
46.1 cm
18.1496 in
1.5125 ft
452 mm
45.2 cm
17.7953 in
1.4829 ft
Box depth-141 mm
14.1 cm
5.5512 in
0.4626 ft
127 mm
12.7 cm
5 in
0.4167 ft
Box weight8.72 kg
19.22 lbs
7.75 kg
17.09 lbs
7.5 kg
16.53 lbs
ColorsBlackBlackBlack

Ergonomics

Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.

VESA mountYesYesYes
VESA interface100 x 100 mm75 x 75 mm100 x 100 mm
Removable standYesYesYes
Height adjustmentYesNoNo
Height adjustment range100 mm
10 cm
3.937 in
0.3281 ft
--
Landscape/portrait pivotNoNoNo
Left/right swivelNoNoNo
Forward/backward tiltYesYesYes
Forward tilt5 °2 °5 °
Backward tilt21 °20 °22 °
-T-shape stand-

Camera

Many contemporary desktop monitors and smart TV sets have built-in cameras.

CameraNoNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity2 x HDMI 1.4
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
1 x HDMI 1.4
1 x HDMI 2.0
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
1 x HDMI 2.0
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
High-bandwidth Digital Content Protection (HDCP) 1.4High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP)

Features

Some additional functional features of the model.

FeaturesAMD FreeSync Premium
Flicker-free technology
Low Blue Light
NVIDIA G-SYNC Compatible
AMD FreeSync technology
Eco Saving Plus
Eye saver mode
Flicker-free technology
Low Blue Light
Picture-by-Picture
Picture-in-Picture
Samsung MagicAngle
Samsung MagicBright
UHD Upscale
3-side NearEdgeless design
AMD FreeSync technology
Flicker-free technology
Low Blue Light

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesENERGY STAR
EPEAT
TCO Certified
RoHS
CE
ISO9241-307
TÜV/Ergonomics
CCC
China Energy Efficiency Standard Tier 1
ENERGY STAR 8.0
EPEAT Gold
Eyesafe Display Certification
RoHS (EU 2002/95/EC)
TÜV Rheinland Eye Comfort
Windows Certification

Operating and storage conditions

There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.

Operating temperature0 °C - 40 °C
32 °F - 104 °F
10 °C - 40 °C
50 °F - 104 °F
0 °C - 45 °C
32 °F - 113 °F
Operating humidity10 % - 80 %10 % - 80 %10 % - 80 %
Operating altitude5000 m
16404.2 ft
-5000 m
16404.2 ft
Storage temperature-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 45 °C
-4 °F - 113 °F
-20 °C - 60 °C
-4 °F - 140 °F
Storage humidity5 % - 90 %5 % - 95 %5 % - 95 %
Storage altitude12192 m
40000 ft
-12192 m
40000 ft

Accessories

Often the packaging of desktop monitors and smart TV sets includes accessories for them.

Accessories-DisplayPort cable
HDMI cable
HDMI cable

Additional features

Information about other features.

Additional features--Anti-theft stand lock slot - Kensington
 Dell S2721HGFSamsung U28E590DLenovo L28u-30