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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

Dell S2417DG vs Acer XF251Q Bmiirx

Side-by-Side Comparison

Products

Dell S2417DG
Acer XF251Q Bmiirx

Tested using Methodology v1.1

Updated Sep 03, 2021 03:53 AM

SEE PRICE
Amazon.com

Tested using Methodology v1.0

Updated Sep 02, 2021 09:17 PM

SEE PRICE
Amazon.com
Dell S2417DG Picture
Acer XF251Q Bmiirx Picture

Variants

  • S2417DG (24")
  • XF251Q (24.5")

Our Verdict

Dell S2417DG

Acer XF251Q Bmiirx

The Dell S2417DG is better than the Acer XF251Q Bmiirx. The S2417DG has much better motion handling, thanks to a much faster refresh rate, faster response time, and optional black frame insertion feature. The Dell also has slightly less input lag. While the Acer XF251Q supports AMD's FreeSync VRR, the Dell S2417DG supports NVIDIA's G-SYNC instead, so the compatibility with your graphics card should be taken into account when choosing between these two.

0 

Check Price

24"
S2417DG
B&H
24.5"
XF251Q
B&H
Read more

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

7.5
7.1

Resolution And Size 
 

8.3
7.2

Horizontal Viewing Angle 
 

6.6
5.2

Full Comparison

Design

Style  

Design Picture  

Dell S2417DG Design Picture
Acer XF251Q Bmiirx Design Picture

Size  

24"
25"

Curved  

No
No

Curve Radius  

Not Curved
N/A

Weight (without stand) 
 

8.4 lbs (3.8 kg)
8.2 lbs (3.7 kg)

Weight (with stand) 
 

12.6 lbs (5.7 kg)
12.3 lbs (5.6 kg)
Show text

Stand  

Stand Picture  

Dell S2417DG Stand Picture
Acer XF251Q Bmiirx Stand Picture

Width 
 

9.5" (24.1 cm)
15.3" (38.9 cm)

Depth 
 

7.1" (18.0 cm)
10.6" (26.9 cm)
Show text

Ergonomics 
 

8.7
8.0

Ergonomics Picture  

Dell S2417DG Ergonomics Picture
Acer XF251Q Bmiirx Ergonomics Picture

Height Adjustment 
 

5.1" (13.0 cm)
4.5" (11.4 cm)

Switch Portrait/Landscape  

Yes, Both Ways
Yes

Swivel Range  

-45° to 45°
-45° to 45°

Tilt Range  

-17.5° to 10°
-20° to 5°
Show text

Back  

Back Picture  

Dell S2417DG Back Picture
Acer XF251Q Bmiirx Back Picture

Wall Mount  

VESA 100x100
VESA 100x100
Show text

Borders  

Borders Picture  

Dell S2417DG Borders Picture
Acer XF251Q Bmiirx Borders Picture

Borders 
 

0.3" (0.8 cm)
0.3" (0.8 cm)
Show text

Thickness  

Thickness Picture  

Dell S2417DG Thickness Picture
Acer XF251Q Bmiirx Thickness Picture

Thickness (with stand) 
 

5.7" (14.5 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  

Dell S2417DG Build Quality Picture
Acer XF251Q Bmiirx Build Quality Picture
Show text
Picture Quality

Contrast 
 

5.2
6.2

Checkerboard Picture  

Dell S2417DG Checkerboard Picture
Acer XF251Q Bmiirx Checkerboard Picture

LCD Type 
 

TN
TN

Native Contrast 
 

620 : 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 
 

8.2
7.3

SDR Real Scene 
 

392 cd/m²
273 cd/m²

SDR Peak 2% Window 
 

419 cd/m²
299 cd/m²

SDR Peak 10% Window 
 

471 cd/m²
300 cd/m²

SDR Peak 25% Window 
 

469 cd/m²
300 cd/m²

SDR Peak 50% Window 
 

467 cd/m²
300 cd/m²

SDR Peak 100% Window 
 

466 cd/m²
300 cd/m²

SDR Sustained 2% Window 
 

413 cd/m²
299 cd/m²

SDR Sustained 10% Window 
 

469 cd/m²
300 cd/m²

SDR Sustained 25% Window 
 

468 cd/m²
300 cd/m²

SDR Sustained 50% Window 
 

466 cd/m²
300 cd/m²

SDR Sustained 100% Window 
 

465 cd/m²
300 cd/m²

SDR ABL 
 

0.007
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 
 

6.6
5.2

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

Dell S2417DG Horizontal Chroma Graph

Color Washout From Left 
 

34°

Color Washout From Right 
 

31°

Horizontal Color Shift Picture  

Acer XF251Q Bmiirx Horizontal Color Shift Picture

Horizontal Hue Graph  

Dell S2417DG Horizontal Hue Graph

Color Shift From Left 
 

37°
30°

Color Shift From Right 
 

41°
28°

Horizontal Brightness Picture  

Acer XF251Q Bmiirx Horizontal Brightness Picture

Horizontal Black Level Picture  

Acer XF251Q Bmiirx Horizontal Black Level Picture

Horizontal Lightness Graph  

Dell S2417DG Horizontal Lightness Graph

Brightness Loss From Left 
 

45°
47°

Brightness Loss From Right 
 

44°
45°

Black Level Raise From Left 
 

38°
31°

Black Level Raise From Right 
 

30°
27°

Curve Radius  

N/A

Gamma Shift From Left 
 

27°

Gamma Shift From Right 
 

36°
Show text

Vertical Viewing Angle 
 

5.0
5.1

Vertical Viewing Angle Video  

Vertical Chroma Graph  

Dell S2417DG Vertical Chroma Graph

Color Washout From Below 
 

12°

Color Washout From Above 
 

45°

Vertical Color Shift Picture  

Acer XF251Q Bmiirx Vertical Color Shift Picture

Vertical Hue Graph  

Dell S2417DG Vertical Hue Graph

Color Shift From Below 
 

15°

Color Shift From Above 
 

39°
33°

Vertical Brightness Picture  

Acer XF251Q Bmiirx Vertical Brightness Picture

Vertical Black Level Picture  

Acer XF251Q Bmiirx Vertical Black Level Picture

Vertical Lightness Graph  

Dell S2417DG Vertical Lightness Graph

Brightness Loss From Below 
 

24°
14°

Brightness Loss From Above 
 

40°
38°

Black Level Raise From Below 
 

27°
19°

Black Level Raise From Above 
 

45°
25°

Gamma Shift From Below 
 

Gamma Shift From Above 
 

Show text

Gray Uniformity 
 

7.8
7.5

50% Uniformity Picture  

Dell S2417DG 50% Uniformity Picture
Acer XF251Q Bmiirx 50% Uniformity Picture

50% Std. Dev. 
 

6.215%
6.636%

50% DSE 
 

0.118%
0.117%

5% Uniformity Picture  

Dell S2417DG 5% Uniformity Picture
Acer XF251Q Bmiirx 5% Uniformity Picture

5% Std. Dev. 
 

0.854%
2.246%

5% DSE 
 

0.072%
0.078%
Show text

Black Uniformity 
 

4.8
6.4

Native Black Uniformity Picture  

Dell S2417DG Native Black Uniformity Picture
Acer XF251Q Bmiirx Native Black Uniformity Picture

Native Std. Dev. 
 

2.792%
1.690%

Black Uniformity Picture With Local Dimming  

Dell S2417DG 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 
 

5.8
5.2

Pre Calibration Picture  

Dell S2417DG Pre Calibration Picture
Acer XF251Q Bmiirx Pre Calibration Picture

Pre Gamma Curve Picture  

Dell S2417DG Pre Gamma Curve Picture
Acer XF251Q Bmiirx Pre Gamma Curve Picture

Pre Color Picture  

Dell S2417DG Pre Color Picture
Acer XF251Q Bmiirx Pre Color Picture

Picture Mode 
 

Standard
Graphics

Luminance 
 

233 cd/m²
307 cd/m²

Luminance Settings 
 

75
80

Contrast Setting 
 

75
50

RGB Controls 
 

Default
50-50-50

Gamma Setting 
 

No Gamma Setting

Color Temperature 
 

6,184 K
6,058 K

White Balance dE 
 

4.56
5.07

Color dE 
 

4.24
4.70

Gamma 
 

1.92
2.14
Show text

Post Calibration 
 

9.5
9.3

Post Calibration Picture  

Dell S2417DG Post Calibration Picture
Acer XF251Q Bmiirx Post Calibration Picture

Post Gamma Curve Picture  

Dell S2417DG Post Gamma Curve Picture
Acer XF251Q Bmiirx Post Gamma Curve Picture

Post Color Picture  

Dell S2417DG Post Color Picture
Acer XF251Q Bmiirx Post Color Picture

Picture Mode 
 

Custom Color
User

Luminance 
 

100 cd/m²
101 cd/m²

Luminance Settings 
 

27
14

Contrast Setting 
 

75
50

RGB Controls 
 

87-92-100
43-49-50

Gamma Setting 
 

No Gamma Setting

Color Temperature 
 

6,455 K
6,499 K

White Balance dE 
 

0.49
0.58

Color dE 
 

1.04
1.15

Gamma 
 

2.18
2.17
Show text

SDR Color Gamut 
 

8.3
8.4

Color Gamut sRGB Picture  

Dell S2417DG Color Gamut sRGB Picture
Acer XF251Q Bmiirx Color Gamut sRGB Picture

sRGB xy 
 

92.9%
92.5%

Color Gamut ARGB Picture  

Dell S2417DG Color Gamut ARGB Picture
Acer XF251Q Bmiirx Color Gamut ARGB Picture

Adobe RGB xy 
 

72.7%
73.7%

sRGB Picture Mode 
 

Custom Color

Adobe RGB Picture Mode 
 

Custom Color
Show text

SDR Color Volume 
 

8.3
8.6

sRGB Color Volume ITP Picture  

Dell S2417DG sRGB Color Volume ITP Picture
Acer XF251Q Bmiirx sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

90.7%
93.5%

Adobe RGB Color Volume ITP Picture  

Dell S2417DG Adobe RGB Color Volume ITP Picture
Acer XF251Q Bmiirx Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

74.5%
77.7%

sRGB Picture Mode 
 

Custom Color

Adobe RGB Picture Mode 
 

Custom Color
Show text

HDR Color Gamut 
 

0.0
0.0

Wide Color Gamut 
 

N/A
No

Color Gamut DCI-P3 Picture  

Dell S2417DG 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  

Dell S2417DG 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  

Dell S2417DG 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  

Dell S2417DG 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  

Dell S2417DG 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 
 

8.3
7.9

Gradient Picture  

Dell S2417DG Gradient Picture
Acer XF251Q Bmiirx Gradient Picture

Color Depth 
 

8 Bit
8 Bit
Show text

Color Bleed 
 

10
10

Color Bleed Horizontal  

Dell S2417DG Color Bleed Horizontal
Acer XF251Q Bmiirx Color Bleed Horizontal

Pixel Row Error 
 

0.000%
0.000%

Color Bleed Vertical  

Dell S2417DG Color Bleed Vertical
Acer XF251Q Bmiirx Color Bleed Vertical

Pixel Column Error 
 

0.015%
0.000%
Show text

Reflections 
 

8.0
7.5

Average Room  

Dell S2417DG Average Room
Acer XF251Q Bmiirx Average Room

Average Room Off Picture  

Dell S2417DG Average Room Off Picture
Acer XF251Q Bmiirx Average Room Off Picture

Bright Room Off Picture  

Dell S2417DG Bright Room Off Picture
Acer XF251Q Bmiirx Bright Room Off Picture

Screen Finish 
 

Matte

Total Reflections 
 

4.9%

Indirect Reflections 
 

3.7%

Calculated Direct Reflections 
 

1.2%
Show text

Text Clarity 
 

6.5

ClearType On  

Dell S2417DG ClearType On

Pixel Type 
 

TN
TN

ClearType Off  

Dell S2417DG ClearType Off

Pixels  

Dell S2417DG Pixels

Sub-Pixel Layout 
 

RGB
Motion

Response Time @ Max Refresh Rate 
 

9.4
9.4

Motion Blur Picture  

Acer XF251Q Bmiirx Motion Blur Picture

Motion Blur Picture  

Dell S2417DG Motion Blur Picture

Response Time Chart  

Acer XF251Q Bmiirx Response Time Chart

Response Time Table  

Dell S2417DG Response Time Table

Best Overdrive Setting 
 

Normal
Normal

Rise / Fall Time 
 

2.1 ms
2.9 ms

Total Response Time 
 

8.8 ms
12.2 ms

Overshoot Error 
 

7.8%

Dark Rise / Fall Time 
 

1.7 ms

Dark Total Response Time 
 

3.2 ms

Dark Overshoot Error 
 

1.5%
Show text

Response Time @ 60Hz 
 

9.3

Motion Blur Picture  

Dell S2417DG Motion Blur Picture

Response Time Table  

Dell S2417DG Response Time Table

Best Overdrive Setting 
 

Normal

Rise / Fall Time 
 

3.1 ms

Total Response Time 
 

11.2 ms

Overshoot Error 
 

2.8%

Dark Rise / Fall Time 
 

1.9 ms

Dark Total Response Time 
 

3.3 ms

Dark Overshoot Error 
 

0.0%

Image Flicker 
 

10
7.5

Backlight Picture  

Dell S2417DG Backlight Picture
Acer XF251Q Bmiirx Backlight Picture

Flicker-Free  

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz

Black Frame Insertion (BFI) 
 

Yes
N/A

BFI Picture  

Dell S2417DG BFI Picture
Acer XF251Q Bmiirx BFI Picture

BFI Frequency Picture  

Dell S2417DG BFI Frequency Picture
Acer XF251Q Bmiirx BFI Frequency Picture

BFI Maximum Frequency 
 

120 Hz
N/A

BFI Minimum Frequency 
 

85 Hz
N/A
Show text

Black Frame Insertion (BFI) 
 

7.7

Black Frame Insertion (BFI) 
 

Yes
N/A

BFI Picture  

Dell S2417DG BFI Picture
Acer XF251Q Bmiirx BFI Picture

BFI Frequency Picture  

Dell S2417DG BFI Frequency Picture
Acer XF251Q Bmiirx BFI Frequency Picture

BFI Maximum Frequency 
 

120 Hz
N/A

BFI Minimum Frequency 
 

85 Hz
N/A

Refresh Rate 
 

9.2
8.2

Variable Refresh Rate 
 

G-SYNC
FreeSync

Native 
 

144 Hz

Max Refresh Rate 
 

165 Hz
75 Hz

Factory Overclock 
 

N/A

Variable Refresh Rate 
 

Yes
FreeSync

FreeSync 
 

No

G-SYNC 
 

Yes (Native)
No

VRR Maximum 
 

165 Hz
75 Hz

VRR Minimum 
 

< 20 Hz
40 Hz

VRR Maximum With OC 
 

N/A

VRR Supported Connectors  

DisplayPort
HDMI
Show text
Inputs

Input Lag 
 

9.4
9.2

Native Resolution 
 

4.2 ms
7.1 ms

Non-Native Res @ Native Refresh 
 

N/A

Native Resolution @ 60Hz 
 

12.5 ms
8.8 ms

Variable Refresh Rate 
 

5.1 ms
7.4 ms

Variable Refresh Rate @ 60Hz 
 

14.6 ms

10 Bit HDR 
 

N/A
N/A

Black Frame Insertion (BFI) 
 

10.6 ms
N/A
Show text

Resolution And Size 
 

8.3
7.2

Native Resolution  

2560 x 1440
1920 x 1080

Aspect Ratio  

16:9
16:9

Megapixels  

3.7 MP
2.1 MP

Pixel Density 
 

124 PPI
90 PPI

Screen Diagonal  

23.8"
24.5"

Screen Area  

242 in²
257 in²
Show text

Inputs  

Inputs 1  

Dell S2417DG Inputs 1
Acer XF251Q Bmiirx Inputs 1

Inputs 2  

Dell S2417DG Inputs 2
Acer XF251Q Bmiirx Inputs 2

Total Inputs  

DisplayPort  

1 (DP 1.2)
No

Mini DisplayPort  

No
No

HDMI  

1 (HDMI 1.4)
2 (HDMI 1.4)

DVI  

No
No

VGA  

No
1

DisplayPort Out  

No
No

USB  

4 (USB 3.0)
No

USB C  

No
No

Analog Audio Out 3.5mm  

2
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 
 

No

Speakers 
 

No
Yes

HDR10  

No
No

Multiple Input Display 
 

No
No
Show text

On-Screen Display (OSD)  

OSD Picture  

Dell S2417DG OSD Picture
Acer XF251Q Bmiirx OSD Picture

Controls  

Controls Picture  

Dell S2417DG Controls Picture
Acer XF251Q Bmiirx Controls Picture
Show text

In The Box  

In The Box Picture  

Dell S2417DG In The Box Picture
Acer XF251Q Bmiirx In The Box Picture
Show text

Check Price

24"
S2417DG
B&H
24.5"
XF251Q
B&H

Dell S2417DG

Acer XF251Q Bmiirx

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