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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Stand
    3. Ergonomics
    4. Back
    5. Borders
    6. Thickness
    7. Build Quality
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Pre Calibration
    10. Post Calibration
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Image Retention
    16. Gradient
    17. Color Bleed
    18. Reflections
    19. Text Clarity
  6. Motion
    1. Response Time @ Max Refresh Rate
    2. Response Time @ 60Hz
    3. Image Flicker
    4. Black Frame Insertion (BFI)
    5. Refresh Rate
  7. Inputs
    1. Input Lag
    2. Resolution And Size
    3. Inputs
    4. Total Inputs
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
    3. Controls
    4. In The Box
  9. Comments

ViewSonic XG2402 vs Acer XF251Q Bmiirx

Side-by-Side Comparison

Products

ViewSonic XG2402
Acer XF251Q Bmiirx

Tested using Methodology v1.1

Updated Sep 02, 2021 09:14 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.0

Updated Sep 02, 2021 09:17 PM

SEE PRICE
Amazon.com
ViewSonic XG2402 Picture
Acer XF251Q Bmiirx Picture

Variants

  • XG2402 (24")
  • XF251Q (24.5")

Our Verdict

ViewSonic XG2402

Acer XF251Q Bmiirx

The ViewSonic XG2402 is better than the Acer XF251Q Bmiirx. The XG2402 has much better motion performance, thanks to the faster 144 Hz refresh rate. The XG2402 is also a bit brighter, and has a better color gamut and better color volume.

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Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

7.3
7.1
No major differences between these monitors for mixed usage. See full list of tests below.

Full Comparison

Design

Style  

Design Picture  

ViewSonic XG2402 Design Picture
Acer XF251Q Bmiirx Design Picture

Size  

24"
25"

Curved  

No
No

Curve Radius  

Not Curved
N/A

Weight (without stand) 
 

7.3 lbs (3.3 kg)
8.2 lbs (3.7 kg)

Weight (with stand) 
 

14.8 lbs (6.7 kg)
12.3 lbs (5.6 kg)
Show Text 

Stand  

Stand Picture  

ViewSonic XG2402 Stand Picture
Acer XF251Q Bmiirx Stand Picture

Width 
 

12.0" (30.5 cm)
15.3" (38.9 cm)

Depth 
 

9.4" (23.9 cm)
10.6" (26.9 cm)
Show Text 

Ergonomics 
 

7.6
8.0

Ergonomics Picture  

ViewSonic XG2402 Ergonomics Picture
Acer XF251Q Bmiirx Ergonomics Picture

Height Adjustment 
 

4.7" (11.9 cm)
4.5" (11.4 cm)

Switch Portrait/Landscape  

Yes, Clockwise
Yes

Swivel Range  

-45° to 45°
-45° to 45°

Tilt Range  

-15° to 5°
-20° to 5°
Show Text 

Back  

Back Picture  

ViewSonic XG2402 Back Picture
Acer XF251Q Bmiirx Back Picture

Wall Mount  

VESA 100x100
VESA 100x100
Show Text 

Borders  

Borders Picture  

ViewSonic XG2402 Borders Picture
Acer XF251Q Bmiirx Borders Picture

Borders 
 

0.7" (1.8 cm)
0.3" (0.8 cm)
Show Text 

Thickness  

Thickness Picture  

ViewSonic XG2402 Thickness Picture
Acer XF251Q Bmiirx Thickness Picture

Thickness (with stand) 
 

7.0" (17.8 cm)
8.5" (21.6 cm)

Thickness (without stand) 
 

2.2" (5.6 cm)
2.2" (5.6 cm)
Show Text 

Build Quality 
 

7.5
7.5

Build Quality Picture  

ViewSonic XG2402 Build Quality Picture
Acer XF251Q Bmiirx Build Quality Picture
Show Text 
Picture Quality

Contrast 
 

5.9
6.2

Checkerboard Picture  

ViewSonic XG2402 Checkerboard Picture
Acer XF251Q Bmiirx Checkerboard Picture

LCD Type 
 

TN
TN

Native Contrast 
 

947 : 1
1,161 : 1

Contrast With Local Dimming 
 

N/A
N/A
Show Text 

Local Dimming 
 

0.0
0.0

Local Dimming Video  

Local Dimming Video  

Local Dimming 
 

No
No

Backlight 
 

Direct
Edge
Show Text 

SDR Peak Brightness 
 

7.8
7.3

SDR Real Scene 
 

319 cd/m²
273 cd/m²

SDR Peak 2% Window 
 

361 cd/m²
299 cd/m²

SDR Peak 10% Window 
 

359 cd/m²
300 cd/m²

SDR Peak 25% Window 
 

357 cd/m²
300 cd/m²

SDR Peak 50% Window 
 

356 cd/m²
300 cd/m²

SDR Peak 100% Window 
 

355 cd/m²
300 cd/m²

SDR Sustained 2% Window 
 

359 cd/m²
299 cd/m²

SDR Sustained 10% Window 
 

358 cd/m²
300 cd/m²

SDR Sustained 25% Window 
 

356 cd/m²
300 cd/m²

SDR Sustained 50% Window 
 

355 cd/m²
300 cd/m²

SDR Sustained 100% Window 
 

354 cd/m²
300 cd/m²

SDR ABL 
 

0.001
0.000
Show Text 

HDR Peak Brightness 
 

0.0
0.0

HDR Real Scene 
 

N/A
N/A

HDR Peak 2% Window 
 

N/A
N/A

HDR Peak 10% Window 
 

N/A
N/A

HDR Peak 25% Window 
 

N/A
N/A

HDR Peak 50% Window 
 

N/A
N/A

HDR Peak 100% Window 
 

N/A
N/A

HDR Sustained 2% Window 
 

N/A
N/A

HDR Sustained 10% Window 
 

N/A
N/A

HDR Sustained 25% Window 
 

N/A
N/A

HDR Sustained 50% Window 
 

N/A
N/A

HDR Sustained 100% Window 
 

N/A
N/A

HDR ABL 
 

N/A
N/A
Show Text 

Horizontal Viewing Angle 
 

6.1
5.2

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

ViewSonic XG2402 Horizontal Chroma Graph

Color Washout From Left 
 

32°

Color Washout From Right 
 

32°

Horizontal Color Shift Picture  

Acer XF251Q Bmiirx Horizontal Color Shift Picture

Horizontal Hue Graph  

ViewSonic XG2402 Horizontal Hue Graph

Color Shift From Left 
 

28°
30°

Color Shift From Right 
 

26°
28°

Horizontal Brightness Picture  

Acer XF251Q Bmiirx Horizontal Brightness Picture

Horizontal Black Level Picture  

Acer XF251Q Bmiirx Horizontal Black Level Picture

Horizontal Lightness Graph  

ViewSonic XG2402 Horizontal Lightness Graph

Brightness Loss From Left 
 

46°
47°

Brightness Loss From Right 
 

46°
45°

Black Level Raise From Left 
 

28°
31°

Black Level Raise From Right 
 

27°
27°

Curve Radius  

N/A

Gamma Shift From Left 
 

18°

Gamma Shift From Right 
 

22°
Show Text 

Vertical Viewing Angle 
 

5.1
5.1

Vertical Viewing Angle Video  

Vertical Chroma Graph  

ViewSonic XG2402 Vertical Chroma Graph

Color Washout From Below 
 

10°

Color Washout From Above 
 

70°

Vertical Color Shift Picture  

Acer XF251Q Bmiirx Vertical Color Shift Picture

Vertical Hue Graph  

ViewSonic XG2402 Vertical Hue Graph

Color Shift From Below 
 

14°

Color Shift From Above 
 

60°
33°

Vertical Brightness Picture  

Acer XF251Q Bmiirx Vertical Brightness Picture

Vertical Black Level Picture  

Acer XF251Q Bmiirx Vertical Black Level Picture

Vertical Lightness Graph  

ViewSonic XG2402 Vertical Lightness Graph

Brightness Loss From Below 
 

17°
14°

Brightness Loss From Above 
 

41°
38°

Black Level Raise From Below 
 

21°
19°

Black Level Raise From Above 
 

43°
25°

Gamma Shift From Below 
 

Gamma Shift From Above 
 

Show Text 

Gray Uniformity 
 

7.4
7.5

50% Uniformity Picture  

ViewSonic XG2402 50% Uniformity Picture
Acer XF251Q Bmiirx 50% Uniformity Picture

50% Std. Dev. 
 

7.804%
6.636%

50% DSE 
 

0.118%
0.117%

5% Uniformity Picture  

ViewSonic XG2402 5% Uniformity Picture
Acer XF251Q Bmiirx 5% Uniformity Picture

5% Std. Dev. 
 

1.561%
2.246%

5% DSE 
 

0.079%
0.078%
Show Text 

Black Uniformity 
 

5.3
6.4

Native Black Uniformity Picture  

ViewSonic XG2402 Native Black Uniformity Picture
Acer XF251Q Bmiirx Native Black Uniformity Picture

Native Std. Dev. 
 

2.441%
1.690%

Black Uniformity Picture With Local Dimming  

ViewSonic XG2402 Black Uniformity Picture With Local Dimming
Acer XF251Q Bmiirx Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Pre Calibration 
 

8.4
5.2

Pre Calibration Picture  

ViewSonic XG2402 Pre Calibration Picture
Acer XF251Q Bmiirx Pre Calibration Picture

Pre Gamma Curve Picture  

ViewSonic XG2402 Pre Gamma Curve Picture
Acer XF251Q Bmiirx Pre Gamma Curve Picture

Pre Color Picture  

ViewSonic XG2402 Pre Color Picture
Acer XF251Q Bmiirx Pre Color Picture

Picture Mode 
 

Custom 1
Graphics

Luminance 
 

274 cd/m²
307 cd/m²

Luminance Settings 
 

85
80

Contrast Setting 
 

60
50

RGB Controls 
 

100-100-100
50-50-50

Gamma Setting 
 

2.4

Color Temperature 
 

6,745 K
6,058 K

White Balance dE 
 

2.56
5.07

Color dE 
 

1.77
4.70

Gamma 
 

2.14
2.14
Show Text 

Post Calibration 
 

9.5
9.3

Post Calibration Picture  

ViewSonic XG2402 Post Calibration Picture
Acer XF251Q Bmiirx Post Calibration Picture

Post Gamma Curve Picture  

ViewSonic XG2402 Post Gamma Curve Picture
Acer XF251Q Bmiirx Post Gamma Curve Picture

Post Color Picture  

ViewSonic XG2402 Post Color Picture
Acer XF251Q Bmiirx Post Color Picture

Picture Mode 
 

Custom 1
User

Luminance 
 

101 cd/m²
101 cd/m²

Luminance Settings 
 

5
14

Contrast Setting 
 

60
50

RGB Controls 
 

98-98-100
43-49-50

Gamma Setting 
 

2.4

Color Temperature 
 

6,455 K
6,499 K

White Balance dE 
 

0.60
0.58

Color dE 
 

0.89
1.15

Gamma 
 

2.16
2.17
Show Text 

SDR Color Gamut 
 

8.7
8.4

Color Gamut sRGB Picture  

ViewSonic XG2402 Color Gamut sRGB Picture
Acer XF251Q Bmiirx Color Gamut sRGB Picture

sRGB xy 
 

98.0%
92.5%

Color Gamut ARGB Picture  

ViewSonic XG2402 Color Gamut ARGB Picture
Acer XF251Q Bmiirx Color Gamut ARGB Picture

Adobe RGB xy 
 

75.2%
73.7%

sRGB Picture Mode 
 

Custom 1

Adobe RGB Picture Mode 
 

Custom 1
Show Text 

SDR Color Volume 
 

9.1
8.6

sRGB Color Volume ITP Picture  

ViewSonic XG2402 sRGB Color Volume ITP Picture
Acer XF251Q Bmiirx sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

97.6%
93.5%

Adobe RGB Color Volume ITP Picture  

ViewSonic XG2402 Adobe RGB Color Volume ITP Picture
Acer XF251Q Bmiirx Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

83.0%
77.7%

sRGB Picture Mode 
 

Custom 1

Adobe RGB Picture Mode 
 

Custom 1
Show Text 

HDR Color Gamut 
 

0.0
0.0

Wide Color Gamut 
 

No
No

Color Gamut DCI-P3 Picture  

ViewSonic XG2402 Color Gamut DCI-P3 Picture
Acer XF251Q Bmiirx Color Gamut DCI-P3 Picture

DCI P3 xy 
 

N/A
N/A

Color Gamut Rec.2020 Picture  

ViewSonic XG2402 Color Gamut Rec.2020 Picture
Acer XF251Q Bmiirx Color Gamut Rec.2020 Picture

Rec. 2020 xy 
 

N/A
N/A

DCI P3 Picture Mode 
 

No HDR

Rec. 2020 Picture Mode 
 

No HDR
Show Text 

HDR Color Volume 
 

0.0
0.0

P3 Color Volume ITP Picture  

ViewSonic XG2402 P3 Color Volume ITP Picture
Acer XF251Q Bmiirx P3 Color Volume ITP Picture

DCI-P3 In ICtCp 
 

N/A
N/A

2020 Color Volume ITP Picture  

ViewSonic XG2402 2020 Color Volume ITP Picture
Acer XF251Q Bmiirx 2020 Color Volume ITP Picture

Rec. 2020 In ICtCp 
 

N/A
N/A

DCI P3 Picture Mode 
 

No HDR

Rec. 2020 Picture Mode 
 

No HDR
Show Text 

Image Retention 
 

10
10

Image Retention Picture  

ViewSonic XG2402 Image Retention Picture
Acer XF251Q Bmiirx Image Retention Picture

IR After 0 Min Recovery 
 

0.00%
0.00%

IR After 2 Min Recovery 
 

0.00%
0.00%

IR After 4 Min Recovery 
 

0.00%
0.00%

IR After 6 Min Recovery 
 

0.00%
0.00%

IR After 8 Min Recovery 
 

0.00%
0.00%

IR After 10 Min Recovery 
 

0.00%
0.00%
Show Text 

Gradient 
 

8.5
7.9

Gradient Picture  

ViewSonic XG2402 Gradient Picture
Acer XF251Q Bmiirx Gradient Picture

Color Depth 
 

8 Bit
8 Bit
Show Text 

Color Bleed 
 

10
10

Color Bleed Horizontal  

ViewSonic XG2402 Color Bleed Horizontal
Acer XF251Q Bmiirx Color Bleed Horizontal

Pixel Row Error 
 

0.000%
0.000%

Color Bleed Vertical  

ViewSonic XG2402 Color Bleed Vertical
Acer XF251Q Bmiirx Color Bleed Vertical

Pixel Column Error 
 

0.001%
0.000%
Show Text 

Reflections 
 

8.3
7.5

Average Room  

ViewSonic XG2402 Average Room
Acer XF251Q Bmiirx Average Room

Average Room Off Picture  

ViewSonic XG2402 Average Room Off Picture
Acer XF251Q Bmiirx Average Room Off Picture

Bright Room Off Picture  

ViewSonic XG2402 Bright Room Off Picture
Acer XF251Q Bmiirx Bright Room Off Picture

Screen Finish 
 

Matte

Total Reflections 
 

4.6%

Indirect Reflections 
 

4.3%

Calculated Direct Reflections 
 

0.4%
Show Text 

Text Clarity 
 

7.5

ClearType On  

ViewSonic XG2402 ClearType On

Pixel Type 
 

TN
TN

ClearType Off  

ViewSonic XG2402 ClearType Off

Pixels  

ViewSonic XG2402 Pixels

Sub-Pixel Layout 
 

RGB
Motion

Response Time @ Max Refresh Rate 
 

9.7
9.4

Motion Blur Picture  

Acer XF251Q Bmiirx Motion Blur Picture

Motion Blur Picture  

ViewSonic XG2402 Motion Blur Picture

Response Time Chart  

Acer XF251Q Bmiirx Response Time Chart

Response Time Table  

ViewSonic XG2402 Response Time Table

Best Overdrive Setting 
 

Fast
Normal

Rise / Fall Time 
 

2.9 ms
2.9 ms

Total Response Time 
 

6.9 ms
12.2 ms

Overshoot Error 
 

1.1%

Dark Rise / Fall Time 
 

1.9 ms

Dark Total Response Time 
 

4.5 ms

Dark Overshoot Error 
 

0.0%
Show Text 

Response Time @ 60Hz 
 

8.6

Motion Blur Picture  

ViewSonic XG2402 Motion Blur Picture

Response Time Table  

ViewSonic XG2402 Response Time Table

Best Overdrive Setting 
 

Fast

Rise / Fall Time 
 

5.0 ms

Total Response Time 
 

14.8 ms

Overshoot Error 
 

1%

Dark Rise / Fall Time 
 

4.6 ms

Dark Total Response Time 
 

8.4 ms

Dark Overshoot Error 
 

0.0%
Show Text 

Image Flicker 
 

10
7.5

Backlight Picture  

ViewSonic XG2402 Backlight Picture
Acer XF251Q Bmiirx Backlight Picture

Flicker-Free  

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz

Black Frame Insertion (BFI) 
 

No
N/A

BFI Picture  

ViewSonic XG2402 BFI Picture
Acer XF251Q Bmiirx BFI Picture

BFI Frequency Picture  

ViewSonic XG2402 BFI Frequency Picture
Acer XF251Q Bmiirx BFI Frequency Picture

BFI Maximum Frequency 
 

N/A
N/A

BFI Minimum Frequency 
 

N/A
N/A
Show Text 

Black Frame Insertion (BFI) 
 

0.0

Black Frame Insertion (BFI) 
 

No
N/A

BFI Picture  

ViewSonic XG2402 BFI Picture
Acer XF251Q Bmiirx BFI Picture

BFI Frequency Picture  

ViewSonic XG2402 BFI Frequency Picture
Acer XF251Q Bmiirx BFI Frequency Picture

BFI Maximum Frequency 
 

N/A
N/A

BFI Minimum Frequency 
 

N/A
N/A

Refresh Rate 
 

9.0
8.2

Variable Refresh Rate 
 

FreeSync
FreeSync

Native 
 

144 Hz

Max Refresh Rate 
 

144 Hz
75 Hz

Factory Overclock 
 

N/A

Variable Refresh Rate 
 

Yes
FreeSync

FreeSync 
 

Yes

G-SYNC 
 

Compatible (Tested)
No

VRR Maximum 
 

144 Hz
75 Hz

VRR Minimum 
 

< 20 Hz
40 Hz

VRR Maximum With OC 
 

N/A

VRR Supported Connectors  

DisplayPort, HDMI
HDMI
Show Text 
Inputs

Input Lag 
 

9.5
9.2

Native Resolution 
 

4.1 ms
7.1 ms

Non-Native Res @ Native Refresh 
 

N/A

Native Resolution @ 60Hz 
 

8.8 ms
8.8 ms

Variable Refresh Rate 
 

4.3 ms
7.4 ms

Variable Refresh Rate @ 60Hz 
 

9.2 ms

10 Bit HDR 
 

N/A
N/A

Black Frame Insertion (BFI) 
 

N/A
N/A
Show Text 

Resolution And Size 
 

7.1
7.2

Native Resolution  

1920 x 1080
1920 x 1080

Aspect Ratio  

16:9
16:9

Megapixels  

2.1 MP
2.1 MP

Pixel Density 
 

92 PPI
90 PPI

Screen Diagonal  

24.0"
24.5"

Screen Area  

247 in²
257 in²
Show Text 

Inputs  

Inputs 1  

ViewSonic XG2402 Inputs 1
Acer XF251Q Bmiirx Inputs 1

Inputs 2  

ViewSonic XG2402 Inputs 2
Acer XF251Q Bmiirx Inputs 2

Total Inputs  

DisplayPort  

1 (DP 1.2)
No

Mini DisplayPort  

No
No

HDMI  

2 (HDMI 1.4)
2 (HDMI 1.4)

DVI  

No
No

VGA  

No
1

DisplayPort Out  

No
No

USB  

2 (USB 3.0)
No

USB C  

No
No

Analog Audio Out 3.5mm  

1
1

Microphone In 3.5mm  

No
1

Digital Optical Audio Out  

No
No

Analog Audio Out RCA  

No
No

Power Supply  

Internal
Internal
Show Text 
Features

Additional Features 
 

RGB Illumination 
 

Fixed (On/Off)

Speakers 
 

Yes
Yes

HDR10  

No
No

Multiple Input Display 
 

No
No
Show Text 

On-Screen Display (OSD)  

OSD Picture  

ViewSonic XG2402 OSD Picture
Acer XF251Q Bmiirx OSD Picture
Show Text 

Controls  

Controls Picture  

ViewSonic XG2402 Controls Picture
Acer XF251Q Bmiirx Controls Picture
Show Text 

In The Box  

In The Box Picture  

ViewSonic XG2402 In The Box Picture
Acer XF251Q Bmiirx In The Box Picture
Show Text 

ViewSonic XG2402

Acer XF251Q Bmiirx

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