Comparison between:
- 21.5" Asus C422AQH
- 21.5" Asus VP228QG
- 24" Asus VP248QGL-P
- 23.6" Acer KG241QA

Brand, series, model

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

Asus C422AQHAsus VP228QGAsus VP248QGL-PAcer KG241QA
Asus C422AQHAsus VP228QGAsus VP248QGL-PAcer KG241QA
Model alias---KG241QAbiip

Display

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

Size class21.5 in21.5 in24 in23.6 in
Diagonal546.1 mm
54.61 cm
21.5 in
1.7917 ft
546.1 mm
54.61 cm
21.5 in
1.7917 ft
609.7 mm
60.97 cm
24.0039 in
2.0003 ft
599 mm
59.9 cm
23.5827 in
1.9652 ft
Width476.064 mm
47.6064 cm
18.7427 in
1.5619 ft
476.64 mm
47.664 cm
18.7654 in
1.5638 ft
531.46 mm
53.146 cm
20.9236 in
1.7436 ft
521.395 mm
52.1395 cm
20.5274 in
1.7106 ft
Height267.786 mm
26.7786 cm
10.5428 in
0.8786 ft
268.11 mm
26.811 cm
10.5555 in
0.8796 ft
298.94 mm
29.894 cm
11.7693 in
0.9808 ft
293.285 mm
29.3285 cm
11.5467 in
0.9622 ft
Radius of curvature---1800 mm
180 cm
70.8661 in
5.9055 ft
Panel typeIPSTNTNTN
Panel bit depth8 bits (6 bits + FRC)8 bits (6 bits + FRC)8 bits (6 bits + FRC)8 bits (6 bits + FRC)
FRCYesYesYesYes
Colors16777216 colors
24 bits
16777216 colors
24 bits
16777216 colors
24 bits
16777216 colors
24 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
Resolution1920 x 1080 pixels
Full HD / 1080p
1920 x 1080 pixels
Full HD / 1080p
1920 x 1080 pixels
Full HD / 1080p
1920 x 1080 pixels
Full HD / 1080p
Pixel pitch0.248 mm
0.0248 cm
0.0098 in
0.0008 ft
0.248 mm
0.0248 cm
0.0098 in
0.0008 ft
0.277 mm
0.0277 cm
0.0109 in
0.0009 ft
0.272 mm
0.0272 cm
0.0107 in
0.0009 ft
Pixel density102 ppi
40 ppcm
102 ppi
40 ppcm
91 ppi
36 ppcm
93 ppi
36 ppcm
Display area79.49 %80.62 %81.46 %80.29 %
BacklightW-LEDW-LEDW-LEDW-LED
NTSC (1953)72 %72 %72 %72 %
Brightness250 cd/m²250 cd/m²250 cd/m²300 cd/m²
Static contrast1000 : 11000 : 11000 : 11000 : 1
Dynamic contrast100000000 : 1100000000 : 1100000000 : 1100000000 : 1
Horizontal viewing angle178 °170 °170 °170 °
Vertical viewing angle178 °160 °160 °160 °
Minimum response time5 ms
0.0050 s
1 ms
0.0010 s
1 ms
0.0010 s
1 ms
0.0010 s
Average response time14 ms
0.0140 s
-3 ms
0.0030 s
-
CoatingAnti-glare/MatteAnti-glare/MatteAnti-glare/MatteAnti-glare/Matte (3H)

3D

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

3DNoNoYesNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (analog)30 kHz - 83 kHz24 kHz - 83 kHz24 kHz - 84 kHz-
Horizontal frequency (digital)30 kHz - 83 kHz24 kHz - 83 kHz24 kHz - 84 kHz30 kHz - 180 kHz
Vertical frequency (analog)49 Hz - 76 Hz48 Hz - 75 Hz50 Hz - 75 Hz-
Vertical frequency (digital)49 Hz - 76 Hz48 Hz - 75 Hz48 Hz - 75 Hz48 Hz - 144 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)0.5 W0.5 W0.5 W0.4 W
Power consumption (sleep)0.5 W0.5 W0.5 W0.5 W
Power consumption (average)13.05 W16 W27 W23 W
Power consumption (maximum)---43 W

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.

Width514 mm
51.4 cm
20.2362 in
1.6864 ft
513 mm
51.3 cm
20.1969 in
1.6831 ft
571.16 mm
57.116 cm
22.4866 in
1.8739 ft
567 mm
56.7 cm
22.3228 in
1.8602 ft
Height312 mm
31.2 cm
12.2835 in
1.0236 ft
309 mm
30.9 cm
12.1654 in
1.0138 ft
341.49 mm
34.149 cm
13.4445 in
1.1204 ft
335.9 mm
33.59 cm
13.2244 in
1.102 ft
Depth50 mm
5 cm
1.9685 in
0.164 ft
52.1 mm
5.21 cm
2.0512 in
0.1709 ft
51.74 mm
5.174 cm
2.037 in
0.1698 ft
60.7 mm
6.07 cm
2.3898 in
0.1991 ft
Weight3.4 kg
7.5 lbs
2.9 kg
6.39 lbs
3.05 kg
6.72 lbs
3.71 kg
8.18 lbs
Width with stand514 mm
51.4 cm
20.2362 in
1.6864 ft
513 mm
51.3 cm
20.1969 in
1.6831 ft
571.16 mm
57.116 cm
22.4866 in
1.8739 ft
567 mm
56.7 cm
22.3228 in
1.8602 ft
Height with stand383 mm
38.3 cm
15.0787 in
1.2566 ft
373 mm
37.3 cm
14.685 in
1.2238 ft
363.85 mm
36.385 cm
14.3248 in
1.1937 ft
437.6 mm
43.76 cm
17.2283 in
1.4357 ft
Depth with stand195 mm
19.5 cm
7.6772 in
0.6398 ft
199.4 mm
19.94 cm
7.8504 in
0.6542 ft
128.54 mm
12.854 cm
5.0606 in
0.4217 ft
231.8 mm
23.18 cm
9.126 in
0.7605 ft
Weight with stand3.8 kg
8.38 lbs
3.5 kg
7.72 lbs
5.6 kg
12.35 lbs
4.17 kg
9.19 lbs
ColorsBlackBlackBlackBlack
Red

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 mm100 x 100 mm
Removable standYesYesYesYes
Height adjustmentNoNoYesNo
Height adjustment range--120 mm
12 cm
4.7244 in
0.3937 ft
-
Landscape/portrait pivotNoNoYesNo
Left pivot--90 °-
Right pivot--90 °-
Left/right swivelNoNoYesNo
Left swivel--90 °-
Right swivel--90 °-
Forward/backward tiltYesYesYesYes
Forward tilt5 °5 °5 °5 °
Backward tilt20 °20 °33 °15 °

Audio

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

Speakers2 x 2 W2 x 1.5 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.

Connectivity2 x USB 3.0 (downstream)
1 x HDMI 1.4
1 x DisplayPort 1.2
1 x DVI-D Dual Link
1 x D-sub
1 x 3.5 mm Audio In
1 x 3.5 mm Audio Out
1 x HDMI 1.4
1 x DisplayPort 1.2
1 x D-sub
1 x 3.5 mm Audio In
1 x HDMI 1.4
1 x DisplayPort 1.2
1 x D-sub
1 x 3.5 mm Audio In
1 x 3.5 mm Audio Out
2 x HDMI 1.4
1 x DisplayPort 1.2

Features

Some additional functional features of the model.

FeaturesFlicker-free technology
HDCP (High-bandwidth Digital Content Protection)
Low Blue Light
SPLENDID Video Intelligence Technology
Trace Free Technology
AMD FreeSync technology
Flicker-free technology
GamePlus (Crosshair/Timer/FPS Counter/Display Alignment)
HDCP (High-bandwidth Digital Content Protection)
Low Blue Light
SPLENDID Video Intelligence Technology
Trace Free Technology
Adaptive-Sync Technology
Flicker-free technology
GamePlus (Crosshair/Timer/FPS Counter/Display Alignment)
HDCP (High-bandwidth Digital Content Protection)
Low Blue Light
SPLENDID Video Intelligence Technology
Trace Free Technology
AMD FreeSync technology
Blue Light Filter
Flicker-free technology
HDCP (High-bandwidth Digital Content Protection)

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesBSMI
CB
CCC
CE
CEL level 1
cTick
CU
eStandby
ENERGY STAR 7.0
FCC Class B
J-MOSS
KCC
PSE
RCM
RoHS
TCO Certified Displays 7.0
TÜV Low Blue Light
TÜV Flicker-free
UL/cUL
VCCI
WEEE
WHQL (Windows 8.1; Windows 7)
BSMI
CB
CCC
CE
CEL level 1
cTick
CU
eStandby
ENERGY STAR 7.0
FCC Class B
J-MOSS
KCC
PSE
RCM
RoHS
TCO Certified Displays
TÜV Low Blue Light
TÜV Flicker-free
UL/cUL
VCCI
WEEE
WHQL (Windows 8.1; Windows 7)
BSMI
CB
CCC
CE
cTick
CU
ENERGY STAR
ErP
eStandby
FCC Class B
J-MOSS
KCC
PCB
PSE
RCM
RoHS
TCO Certified Displays
TÜV Flicker-free
TÜV Low Blue Light
UL/cUL
VCCI
WEEE
WHQL (Windows 10; Windows 8.1; Windows 7)
ENERGY STAR
ErP
TCO Certified Displays

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
0 °C - 40 °C
32 °F - 104 °F
0 °C - 40 °C
32 °F - 104 °F
-
Storage temperature-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 60 °C
-4 °F - 140 °F
-

Accessories

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

AccessoriesAudio cable
D-sub cable
DisplayPort cable
HDMI cable - optional
USB cable
Audio cable
D-sub cable
DisplayPort cable
HDMI cable
Audio cable
D-sub cable
DisplayPort cable - optional
HDMI cable - optional
HDMI cable

Additional features

Information about other features.

Additional featuresAnti-theft stand lock slot - KensingtonAnti-theft stand lock slot - KensingtonAnti-theft stand lock slot - Kensington-
 Asus C422AQHAsus VP228QGAsus VP248QGL-PAcer KG241QA