Comparison between:
- 31.5" Acer EB321HQU Cbidpx
- 28" Acer KG281K
- 28" BenQ EL2870U
- 28" Samsung U28E590D

Brand, series, model

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

Acer EB321HQU CbidpxAcer KG281KBenQ EL2870USamsung U28E590D
SeriesEB1---
Acer EB321HQU CbidpxAcer KG281KBenQ EL2870USamsung U28E590D
Model aliasEB321HQUCbidpxKG281Kbmiipx-LU28E590DS/ZA
Model year2019201720182015

Display

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

Size class31.5 in28 in28 in28 in
Diagonal801 mm
80.1 cm
31.5354 in
2.628 ft
708.538 mm
70.8538 cm
27.8952 in
2.3246 ft
709 mm
70.9 cm
27.9134 in
2.3261 ft
711.2 mm
71.12 cm
28 in
2.3333 ft
Width698.88 mm
69.888 cm
27.515 in
2.2929 ft
620.93 mm
62.093 cm
24.4461 in
2.0372 ft
620.928 mm
62.0928 cm
24.446 in
2.0372 ft
620.928 mm
62.0928 cm
24.446 in
2.0372 ft
Height393.12 mm
39.312 cm
15.4772 in
1.2898 ft
341.28 mm
34.128 cm
13.4362 in
1.1197 ft
341.28 mm
34.128 cm
13.4362 in
1.1197 ft
341.28 mm
34.128 cm
13.4362 in
1.1197 ft
Panel manufacturer--InnoluxInnolux
Panel model--M280DGJ0-L30M280DGJ-L30
Panel typeIPSTNTNTN
Panel bit depth10 bits (8 bits + FRC)10 bits10 bits (8 bits + FRC)10 bits (8 bits + FRC)
FRCYes-YesYes
Colors1073741824 colors
30 bits
1073741824 colors
30 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
1.778:1
16:9
Resolution2560 x 1440 pixels
Quad HD (QHD) / 1440p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
Pixel pitch0.273 mm
0.0273 cm
0.0107 in
0.0009 ft
0.162 mm
0.0162 cm
0.0064 in
0.0005 ft
0.162 mm
0.0162 cm
0.0064 in
0.0005 ft
0.16 mm
0.016 cm
0.0063 in
0.0005 ft
Pixel density93 ppi
36 ppcm
157 ppi
61 ppcm
157 ppi
61 ppcm
157 ppi
61 ppcm
Display area89.16 %--84.09 %
BacklightW-LEDW-LEDW-LEDW-LED
sRGB--97 %98 %
Adobe RGB (1998)---67 %
NTSC (1953)72 %72 %72 %72 %
DCI P3--70 %-
Brightness300 cd/m²300 cd/m²300 cd/m²370 cd/m²
Static contrast1200 : 11000 : 11000 : 11000 : 1
Dynamic contrast100000000 : 1100000000 : 1120000000 : 1100000000 : 1
HDR--HDR-
Horizontal viewing angle178 °170 °170 °170 °
Vertical viewing angle178 °160 °160 °160 °
Minimum response time4 ms
0.0040 s
1 ms
0.0010 s
1 ms
0.0010 s
1 ms
0.0010 s
Average response time--4 ms
0.0040 s
3.5 ms
0.0035 s
Maximum response time---23 ms
0.0230 s
Input lag--5 ms
0.0050 s
15 ms
0.0150 s
CoatingAnti-glare/Matte (3H)Anti-glare/Matte (3H)-Anti-glare/Matte (3H)

3D

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

3DNoNoNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (digital)--30 kHz - 135 kHz30 kHz - 135 kHz
Vertical frequency (digital)60 Hz60 Hz60 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 V100 V - 120 V
220V220 V - 240 V220 V - 240 V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz
Power consumption (off)0.4 W0.4 W0.5 W0.3 W
Power consumption (sleep)0.45 W0.5 W0.5 W0.45 W
Power consumption (eco)---29.6 W
Power consumption (average)-34 W55 W38 W
Power consumption (maximum)50 W--45 W
Power consumption (annual)-58 kWh-85 kWh
Energy efficiency class-B-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.

Width726.4 mm
72.64 cm
28.5984 in
2.3832 ft
--660.9 mm
66.09 cm
26.0197 in
2.1683 ft
Height424.2 mm
42.42 cm
16.7008 in
1.3917 ft
--381.3 mm
38.13 cm
15.0118 in
1.251 ft
Depth50.8 mm
5.08 cm
2 in
0.1667 ft
--73.5 mm
7.35 cm
2.8937 in
0.2411 ft
Weight5.8 kg
12.79 lbs
--4.7 kg
10.36 lbs
Width with stand726.4 mm
72.64 cm
28.5984 in
2.3832 ft
658.9 mm
65.89 cm
25.9409 in
2.1617 ft
657.9 mm
65.79 cm
25.9016 in
2.1585 ft
660.9 mm
66.09 cm
26.0197 in
2.1683 ft
Height with stand480.1 mm
48.01 cm
18.9016 in
1.5751 ft
482.1 mm
48.21 cm
18.9803 in
1.5817 ft
476.27 mm
47.627 cm
18.7508 in
1.5626 ft
468.5 mm
46.85 cm
18.4449 in
1.5371 ft
Depth with stand180.3 mm
18.03 cm
7.0984 in
0.5915 ft
241 mm
24.1 cm
9.4882 in
0.7907 ft
149.6 mm
14.96 cm
5.8898 in
0.4908 ft
187.1 mm
18.71 cm
7.3661 in
0.6138 ft
Weight with stand6.4 kg
14.11 lbs
5.5 kg
12.13 lbs
5.7 kg
12.57 lbs
5.28 kg
11.64 lbs
Box width927.1 mm
92.71 cm
36.5 in
3.0417 ft
--740 mm
74 cm
29.1339 in
2.4278 ft
Box height520.7 mm
52.07 cm
20.5 in
1.7083 ft
--461 mm
46.1 cm
18.1496 in
1.5125 ft
Box depth152.4 mm
15.24 cm
6 in
0.5 ft
--141 mm
14.1 cm
5.5512 in
0.4626 ft
Box weight8.6 kg
18.96 lbs
7.83 kg
17.26 lbs
7.2 kg
15.87 lbs
7.75 kg
17.09 lbs
ColorsWhiteBlackBlackBlack

Ergonomics

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

VESA mountYesYesYesYes
VESA interface100 x 100 mm100 x 100 mm100 x 100 mm75 x 75 mm
Removable standYesYesYesYes
Height adjustmentNoNoNoNo
Landscape/portrait pivotNoNoNoNo
Left/right swivelNoNoNoNo
Forward/backward tiltYesYesYesYes
Forward tilt5 °5 °5 °2 °
Backward tilt15 °15 °15 °20 °
---T-shape stand

Audio

Information about the audio system - number and power of the built-in speakers, supported audio technologies.

Speakers-2 x 2 W2 x 2 W-

Camera

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

CameraNoNoNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity1 x HDMI 1.4
1 x DisplayPort 1.2
1 x DVI-I
1 x HDMI 1.4 (MHL)
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
2 x HDMI 2.0
1 x DisplayPort 1.4
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
High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP) 2.2High-bandwidth Digital Content Protection (HDCP)

Features

Some additional functional features of the model.

FeaturesBlue Light Filter
DDC/CI
Flicker-free technology
AMD FreeSync technology
Blue Light Filter
Flicker-free technology
AMA (Advanced Motion Accelerator)
AMD FreeSync technology
Brightness Intelligence Plus
Flicker-free technology
Low Blue Light
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

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesMPRIIENERGY STAR
ErP
TCO Certified Displays
ENERGY STAR 7.0
TÜV Flicker-free
TÜV Low Blue Light
WHQL (Windows 10; Windows 8.1; Windows 8; Windows 7)
CE
ISO9241-307
TÜV/Ergonomics

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 temperature---10 °C - 40 °C
50 °F - 104 °F
Operating humidity---10 % - 80 %
Storage temperature----20 °C - 45 °C
-4 °F - 113 °F
Storage humidity---5 % - 95 %

Accessories

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

Accessories-DisplayPort cable
HDMI cable
-DisplayPort cable
HDMI cable

Additional features

Information about other features.

Additional features--Anti-theft stand lock slot - Kensington-
 Acer EB321HQU CbidpxAcer KG281KBenQ EL2870USamsung U28E590D