Comparison between:
- 28" Acer KG281KA
- 28" Acer XB281HK
- 31.5" Acer Nitro RG321QU Pbiipx

Brand, series, model

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

Acer KG281KAAcer XB281HKAcer Nitro RG321QU Pbiipx
Series--Nitro RG1
Acer KG281KAAcer XB281HKAcer Nitro RG321QU Pbiipx
Model aliasKG281KAbmiipx
KG281KA bmiipx
Predator XB281HKbmiprzRG321QUPbiipx
UM.JR1EE.P01
UM.JR1SA.P01
UM.JR1AA.P01
Model year201920152021

Display

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

Size class28 in28 in31.5 in
Diagonal708.538 mm
70.8538 cm
27.8952 in
2.3246 ft
711.2 mm
71.12 cm
28 in
2.3333 ft
801 mm
80.1 cm
31.5354 in
2.628 ft
Width620.93 mm
62.093 cm
24.4461 in
2.0372 ft
620.93 mm
62.093 cm
24.4461 in
2.0372 ft
697.344 mm
69.7344 cm
27.4545 in
2.2879 ft
Height341.28 mm
34.128 cm
13.4362 in
1.1197 ft
341.28 mm
34.128 cm
13.4362 in
1.1197 ft
392.256 mm
39.2256 cm
15.4431 in
1.2869 ft
Panel manufacturer-Innolux-
Panel typeTNTNIPS
Panel bit depth10 bits10 bits (8 bits + FRC)8 bits
FRC-YesNo
Colors1073741824 colors
30 bits
1073741824 colors
30 bits
16777216 colors
24 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
Resolution3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
2560 x 1440 pixels
Quad HD (QHD) / 1440p
Pixel pitch0.162 mm
0.0162 cm
0.0064 in
0.0005 ft
0.162 mm
0.0162 cm
0.0064 in
0.0005 ft
0.272 mm
0.0272 cm
0.0107 in
0.0009 ft
Pixel density157 ppi
61 ppcm
157 ppi
61 ppcm
93 ppi
36 ppcm
Display area--93.02 %
BacklightW-LEDW-LEDW-LED
NTSC (1953)72 %72 %72 %
Brightness330 cd/m²300 cd/m²250 cd/m²
Static contrast1000 : 11000 : 11000 : 1
Dynamic contrast100000000 : 1100000000 : 1100000000 : 1
HDR--HDR10
Horizontal viewing angle170 °170 °178 °
Vertical viewing angle160 °160 °178 °
Minimum response time1 ms
0.0010 s
1 ms
0.0010 s
-
CoatingAnti-glare/Matte (3H)Anti-glare/Matte (3H)Anti-glare/Matte (3H)
--Response time - 1 ms (VRB - Visual Response Boost)

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 - 160 kHz-24 kHz - 250 kHz
Vertical frequency (digital)40 Hz - 60 Hz60 Hz48 Hz - 170 Hz
--Native - 144 Hz
Overclock - 170 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
Power consumption (off)0.3 W0.45 W0.3 W
Power consumption (sleep)0.37 W0.5 W0.3 W
Power consumption (average)34 W59 W37 W
Power consumption (maximum)--41 W
Power consumption (annual)58 kWh87 kWh37 kWh
Energy efficiency classBCG

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.

Width--712 mm
71.2 cm
28.0315 in
2.336 ft
Height--413 mm
41.3 cm
16.2598 in
1.355 ft
Depth--37.34 mm
3.734 cm
1.4701 in
0.1225 ft
Width with stand659 mm
65.9 cm
25.9449 in
2.1621 ft
659 mm
65.9 cm
25.9449 in
2.1621 ft
712 mm
71.2 cm
28.0315 in
2.336 ft
Height with stand482 mm
48.2 cm
18.9764 in
1.5814 ft
415 mm
41.5 cm
16.3386 in
1.3615 ft
523.24 mm
52.324 cm
20.6 in
1.7167 ft
Depth with stand241 mm
24.1 cm
9.4882 in
0.7907 ft
268 mm
26.8 cm
10.5512 in
0.8793 ft
200.66 mm
20.066 cm
7.9 in
0.6583 ft
Weight with stand5.49 kg
12.1 lbs
7.57 kg
16.69 lbs
5.22 kg
11.51 lbs
Box weight7.83 kg
17.26 lbs
--
ColorsBlack
Gray
BlackBlack

Ergonomics

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

VESA mountYesYesYes
VESA interface100 x 100 mm100 x 100 mm100 x 100 mm
Removable standYesYesYes
Height adjustmentNoYesNo
Height adjustment range-150 mm
15 cm
5.9055 in
0.4921 ft
-
Landscape/portrait pivotNoYesNo
Left pivot-90 °-
Right pivot-90 °-
Left/right swivelNoYesNo
Left swivel-30 °-
Right swivel-30 °-
Forward/backward tiltYesYesYes
Forward tilt5 °5 °5 °
Backward tilt15 °35 °10 °

Audio

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

Speakers2 x 2 W2 x 2 W-

Camera

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

CameraNoNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity1 x HDMI 2.0
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
4 x USB 3.0 (downstream)
1 x USB 3.0 (upstream)
1 x HDMI 1.4
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
High-bandwidth Digital Content Protection (HDCP)-High-bandwidth Digital Content Protection (HDCP)

Features

Some additional functional features of the model.

FeaturesAMD FreeSync technology
Blue Light Filter
Flicker-free technology
Flicker-free technology
Nvidia G-SYNC Technology
AMD FreeSync Premium
Black Boost
BlueLightShield
ComfyView
Flicker-free technology
Low Dimming technology
ZeroFrame Design

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesENERGY STAR
ErP
TCO Certified Displays
ENERGY STAR
ErP
TCO Certified Displays 6.0
-

Accessories

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

AccessoriesDisplayPort cableDisplayPort cable
HDMI cable
USB 3.0 cable
DisplayPort cable
HDMI cable

Additional features

Information about other features.

Additional features--Anti-theft stand lock slot - Kensington
 Acer KG281KAAcer XB281HKAcer Nitro RG321QU Pbiipx