Comparison between:
- 28" Acer RT280K
- 21.5" Asus C422AQH

Brand, series, model

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

Acer RT280KAsus C422AQH
Acer RT280KAsus C422AQH
Model aliasRT280Kbmjdpx-

Display

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

Size class28 in21.5 in
Diagonal711.2 mm
71.12 cm
28 in
2.3333 ft
546.1 mm
54.61 cm
21.5 in
1.7917 ft
Width620.93 mm
62.093 cm
24.4461 in
2.0372 ft
476.064 mm
47.6064 cm
18.7427 in
1.5619 ft
Height341.28 mm
34.128 cm
13.4362 in
1.1197 ft
267.786 mm
26.7786 cm
10.5428 in
0.8786 ft
Panel typeTNIPS
Panel bit depth10 bits8 bits (6 bits + FRC)
FRC-Yes
Colors1073741824 colors
30 bits
16777216 colors
24 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
Resolution3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
1920 x 1080 pixels
Full HD / 1080p
Pixel pitch0.162 mm
0.0162 cm
0.0064 in
0.0005 ft
0.248 mm
0.0248 cm
0.0098 in
0.0008 ft
Pixel density157 ppi
61 ppcm
102 ppi
40 ppcm
Display area-79.49 %
BacklightW-LEDW-LED
NTSC (1953)72 %72 %
Brightness300 cd/m²250 cd/m²
Static contrast1000 : 11000 : 1
Dynamic contrast100000000 : 1100000000 : 1
Horizontal viewing angle170 °178 °
Vertical viewing angle160 °178 °
Minimum response time1 ms
0.0010 s
5 ms
0.0050 s
Average response time-14 ms
0.0140 s
CoatingAnti-glare/Matte (3H)Anti-glare/Matte

3D

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

3DNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (analog)-30 kHz - 83 kHz
Horizontal frequency (digital)30 kHz - 160 kHz30 kHz - 83 kHz
Vertical frequency (analog)-49 Hz - 76 Hz
Vertical frequency (digital)23 Hz - 80 Hz49 Hz - 76 Hz

Power supply and consumption

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

110V100 V - 120 V100 V - 120 V
220V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz
Power consumption (off)0.35 W0.5 W
Power consumption (sleep)0.45 W0.5 W
Power consumption (average)41.5 W13.05 W
Power consumption (maximum)61 W-
Energy efficiency classB-

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-514 mm
51.4 cm
20.2362 in
1.6864 ft
Height-312 mm
31.2 cm
12.2835 in
1.0236 ft
Depth-50 mm
5 cm
1.9685 in
0.164 ft
Weight-3.4 kg
7.5 lbs
Width with stand658.9 mm
65.89 cm
25.9409 in
2.1617 ft
514 mm
51.4 cm
20.2362 in
1.6864 ft
Height with stand482.1 mm
48.21 cm
18.9803 in
1.5817 ft
383 mm
38.3 cm
15.0787 in
1.2566 ft
Depth with stand210 mm
21 cm
8.2677 in
0.689 ft
195 mm
19.5 cm
7.6772 in
0.6398 ft
Weight with stand5.64 kg
12.43 lbs
3.8 kg
8.38 lbs
ColorsBlack
Silver
Black

Ergonomics

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

VESA mountYesYes
VESA interface100 x 100 mm100 x 100 mm
Removable standYesYes
Height adjustmentNoNo
Landscape/portrait pivotNoNo
Left/right swivelNoNo
Forward/backward tiltYesYes
Forward tilt5 °5 °
Backward tilt15 °20 °

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.

CameraNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity1 x HDMI 2.0 (MHL)
1 x DisplayPort 1.2
1 x DVI-D Dual Link
1 x 3.5 mm Audio In
1 x 3.5 mm Audio Out
2 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

Features

Some additional functional features of the model.

FeaturesAMD FreeSync technology
Blue Light Filter
Flicker-free technology
HDCP (High-bandwidth Digital Content Protection)
Picture-by-Picture
Picture-in-Picture
Flicker-free technology
HDCP (High-bandwidth Digital Content Protection)
Low Blue Light
SPLENDID Video Intelligence Technology
Trace Free Technology

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesENERGY STAR
ErP
TCO Certified Displays
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 7.0
TÜV Low Blue Light
TÜV Flicker-free
UL/cUL
VCCI
WEEE
WHQL (Windows 8.1; Windows 7)

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

Accessories

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

AccessoriesDisplayPort cable
DVI-D cable
Audio cable
D-sub cable
DisplayPort cable
HDMI cable - optional
USB cable

Additional features

Information about other features.

Additional features-Anti-theft stand lock slot - Kensington
 Acer RT280KAsus C422AQH