Comparison between:
- 24.5" Acer XF251Q
- 21.5" Acer KG221Q

Brand, series, model

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

Acer XF251QAcer KG221Q
Acer XF251QAcer KG221Q
Model aliasXF251Qbmirix
XF251Q bmiirx
KG221Qbmix

Display

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

Size class24.5 in21.5 in
Diagonal622.3 mm
62.23 cm
24.5 in
2.0417 ft
546.1 mm
54.61 cm
21.5 in
1.7917 ft
Width543.744 mm
54.3744 cm
21.4072 in
1.7839 ft
476.64 mm
47.664 cm
18.7654 in
1.5638 ft
Height302.616 mm
30.2616 cm
11.914 in
0.9928 ft
268.11 mm
26.811 cm
10.5555 in
0.8796 ft
Panel typeTNTN
Panel bit depth8 bits (6 bits + FRC)8 bits (6 bits + FRC)
FRCYesYes
Colors16777216 colors
24 bits
16777216 colors
24 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
Resolution1920 x 1080 pixels
Full HD / 1080p
1920 x 1080 pixels
Full HD / 1080p
Pixel pitch0.283 mm
0.0283 cm
0.0111 in
0.0009 ft
0.248 mm
0.0248 cm
0.0098 in
0.0008 ft
Pixel density89 ppi
35 ppcm
102 ppi
40 ppcm
Display area88.84 %82.61 %
BacklightW-LEDW-LED
sRGB99 %-
Adobe RGB (1998)74 %-
NTSC (1953)72 %-
Brightness250 cd/m²250 cd/m²
Static contrast1000 : 11000 : 1
Dynamic contrast100000000 : 1100000000 : 1
Horizontal viewing angle170 °170 °
Vertical viewing angle160 °160 °
Minimum response time1 ms
0.0010 s
1 ms
0.0010 s
Input lag7 ms
0.0070 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 (digital)30 kHz - 85 kHz30 kHz - 85 kHz
Vertical frequency (digital)55 Hz - 75 Hz55 Hz - 75 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)0.24 W0.3 W
Power consumption (sleep)0.43 W0.4 W
Power consumption (average)26.6 W17 W
Power consumption (maximum)35 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.

Width557.9 mm
55.79 cm
21.9646 in
1.8304 ft
508 mm
50.8 cm
20 in
1.6667 ft
Height332 mm
33.2 cm
13.0709 in
1.0892 ft
304.5 mm
30.45 cm
11.9882 in
0.999 ft
Depth56 mm
5.6 cm
2.2047 in
0.1837 ft
52 mm
5.2 cm
2.0472 in
0.1706 ft
Weight3.7 kg
8.16 lbs
3 kg
6.61 lbs
Width with stand557.9 mm
55.79 cm
21.9646 in
1.8304 ft
508 mm
50.8 cm
20 in
1.6667 ft
Height with stand400.46 mm
40.046 cm
15.7661 in
1.3138 ft
406.1 mm
40.61 cm
15.9882 in
1.3323 ft
Depth with stand269.24 mm
26.924 cm
10.6 in
0.8833 ft
188.8 mm
18.88 cm
7.4331 in
0.6194 ft
Weight with stand5.62 kg
12.39 lbs
3.4 kg
7.5 lbs
ColorsBlackBlack

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 adjustmentYesNo
Height adjustment range115 mm
11.5 cm
4.5276 in
0.3773 ft
-
Landscape/portrait pivotYesNo
Left pivot0 °-
Right pivot90 °-
Left/right swivelYesNo
Left swivel45 °-
Right swivel45 °-
Forward/backward tiltYesYes
Forward tilt5 °5 °
Backward tilt15 °15 °

Audio

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

Speakers2 x 2 W2 x 1 W

Camera

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

CameraNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity2 x HDMI 1.4
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 D-sub
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)
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 licensesENERGY STAR
ErP
TCO Certified Displays
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 temperature-0 °C - 40 °C
32 °F - 104 °F
Operating humidity-20 % - 80 %
Storage temperature--20 °C - 65 °C
-4 °F - 149 °F
Storage humidity-10 % - 90 %

Accessories

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

AccessoriesAudio cable
D-sub cable
HDMI cable
D-sub cable

Additional features

Information about other features.

Additional features-Anti-theft stand lock slot - Kensington
 Acer XF251QAcer KG221Q