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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

LG 38GL950G-B vs Dell Alienware AW3420DW

Side-by-Side Comparison

Products

LG 38GL950G-B
Dell Alienware AW3420DW

Tested using Methodology v1.1

Updated Sep 03, 2021 12:40 AM

SEE PRICE
Amazon.com

Tested using Methodology v1.1

Updated May 24, 2024 02:05 PM

SEE PRICE
Walmart.com
LG 38GL950G-B Picture
Dell Alienware AW3420DW Picture

Variants

  • 38GL950G-B (38")
  • AW3420DW (34")

Our Verdict

LG 38GL950G-B

Dell Alienware AW3420DW

The LG 38GL950G-B is a better monitor than the Dell Alienware AW3420DW for most uses. The LG has a bigger screen, a higher refresh rate, and a faster response time. Additionally, the LG has a much higher peak brightness, wider viewing angles, and it supports HDR. However, the Dell has better ergonomics and a much better build quality.

0 

Check Price

34"
AW3420DW
B&H
38"
38GL950G-B
B&H

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

8.0
7.5

Ergonomics 
 

4.5
6.6

Full Comparison

Design

Style  

Design Picture  

LG 38GL950G-B Design Picture
Dell Alienware AW3420DW Design Picture

Size  

38"
34"

Curved  

Yes
Yes

Curve Radius  

2300R
1900R

Weight (without stand) 
 

16.5 lbs (7.5 kg)
14.8 lbs (6.7 kg)

Weight (with stand) 
 

21.8 lbs (9.9 kg)
23.8 lbs (10.8 kg)
Show Text 

Stand  

Stand Picture  

LG 38GL950G-B Stand Picture
Dell Alienware AW3420DW Stand Picture

Width 
 

18.9" (48.0 cm)
22.0" (56.0 cm)

Depth 
 

11.3" (28.7 cm)
10.4" (26.5 cm)
Show Text 

Ergonomics 
 

4.5
6.6

Ergonomics Picture  

LG 38GL950G-B Ergonomics Picture
Dell Alienware AW3420DW Ergonomics Picture

Height Adjustment 
 

4.3" (11.0 cm)
5.1" (13.0 cm)

Switch Portrait/Landscape  

No
No

Swivel Range  

No swivel
-30° to 30°

Tilt Range  

-15° to 5°
-20° to 5°
Show Text 

Back  

Back Picture  

LG 38GL950G-B Back Picture
Dell Alienware AW3420DW Back Picture

Wall Mount  

VESA 100x100
VESA 100x100
Show Text 

Borders  

Borders Picture  

LG 38GL950G-B Borders Picture
Dell Alienware AW3420DW Borders Picture

Borders 
 

0.4" (1.1 cm)
0.3" (0.8 cm)
Show Text 

Thickness  

Thickness Picture  

LG 38GL950G-B Thickness Picture
Dell Alienware AW3420DW Thickness Picture

Thickness (with stand) 
 

9.4" (24.0 cm)
10.4" (26.5 cm)

Thickness (without stand) 
 

4.6" (11.8 cm)
4.6" (11.7 cm)
Show Text 

Build Quality 
 

7.5
8.5

Build Quality Picture  

LG 38GL950G-B Build Quality Picture
Dell Alienware AW3420DW Build Quality Picture
Show Text 
Picture Quality

Contrast 
 

5.8
5.4

Checkerboard Picture  

LG 38GL950G-B Checkerboard Picture
Dell Alienware AW3420DW Checkerboard Picture

Native Contrast 
 

917 : 1
720 : 1

Contrast With Local Dimming 
 

N/A
N/A
Show Text 

Local Dimming 
 

0.0
0.0

Local Dimming Video  

Local Dimming 
 

No
No

Backlight 
 

Edge
Edge
Show Text 

SDR Peak Brightness 
 

8.4
6.6

SDR Real Scene 
 

445 cd/m²
226 cd/m²

SDR Peak 2% Window 
 

464 cd/m²
245 cd/m²

SDR Peak 10% Window 
 

465 cd/m²
247 cd/m²

SDR Peak 25% Window 
 

466 cd/m²
247 cd/m²

SDR Peak 50% Window 
 

466 cd/m²
247 cd/m²

SDR Peak 100% Window 
 

466 cd/m²
247 cd/m²

SDR Sustained 2% Window 
 

464 cd/m²
245 cd/m²

SDR Sustained 10% Window 
 

465 cd/m²
247 cd/m²

SDR Sustained 25% Window 
 

466 cd/m²
247 cd/m²

SDR Sustained 50% Window 
 

466 cd/m²
247 cd/m²

SDR Sustained 100% Window 
 

466 cd/m²
247 cd/m²

SDR ABL 
 

0.000
0.001
Show Text 

HDR Peak Brightness 
 

7.2
0.0

HDR Real Scene 
 

482 cd/m²
N/A

HDR Peak 2% Window 
 

509 cd/m²
N/A

HDR Peak 10% Window 
 

510 cd/m²
N/A

HDR Peak 25% Window 
 

511 cd/m²
N/A

HDR Peak 50% Window 
 

512 cd/m²
N/A

HDR Peak 100% Window 
 

512 cd/m²
N/A

HDR Sustained 2% Window 
 

509 cd/m²
N/A

HDR Sustained 10% Window 
 

510 cd/m²
N/A

HDR Sustained 25% Window 
 

511 cd/m²
N/A

HDR Sustained 50% Window 
 

511 cd/m²
N/A

HDR Sustained 100% Window 
 

511 cd/m²
N/A

HDR ABL 
 

0.000
N/A
Show Text 

Horizontal Viewing Angle 
 

7.5
6.9

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

LG 38GL950G-B Horizontal Chroma Graph
Dell Alienware AW3420DW Horizontal Chroma Graph

Color Washout From Left 
 

42°
42°

Color Washout From Right 
 

43°
40°

Horizontal Hue Graph  

LG 38GL950G-B Horizontal Hue Graph
Dell Alienware AW3420DW Horizontal Hue Graph

Color Shift From Left 
 

50°
53°

Color Shift From Right 
 

53°
54°

Horizontal Lightness Graph  

LG 38GL950G-B Horizontal Lightness Graph
Dell Alienware AW3420DW Horizontal Lightness Graph

Brightness Loss From Left 
 

46°
47°

Brightness Loss From Right 
 

48°
46°

Black Level Raise From Left 
 

70°
27°

Black Level Raise From Right 
 

32°
18°

Gamma Shift From Left 
 

39°
35°

Gamma Shift From Right 
 

36°
28°
Show Text 

Vertical Viewing Angle 
 

7.2
7.0

Vertical Viewing Angle Video  

Vertical Chroma Graph  

LG 38GL950G-B Vertical Chroma Graph
Dell Alienware AW3420DW Vertical Chroma Graph

Color Washout From Below 
 

32°
33°

Color Washout From Above 
 

32°
31°

Vertical Hue Graph  

LG 38GL950G-B Vertical Hue Graph
Dell Alienware AW3420DW Vertical Hue Graph

Color Shift From Below 
 

39°
38°

Color Shift From Above 
 

39°
34°

Vertical Lightness Graph  

LG 38GL950G-B Vertical Lightness Graph
Dell Alienware AW3420DW Vertical Lightness Graph

Brightness Loss From Below 
 

34°
36°

Brightness Loss From Above 
 

34°
34°

Black Level Raise From Below 
 

70°
70°

Black Level Raise From Above 
 

70°
70°

Gamma Shift From Below 
 

44°
37°

Gamma Shift From Above 
 

39°
34°
Show Text 

Gray Uniformity 
 

8.6
8.9

50% Uniformity Picture  

LG 38GL950G-B 50% Uniformity Picture
Dell Alienware AW3420DW 50% Uniformity Picture

50% Std. Dev. 
 

3.858%
2.615%

50% DSE 
 

0.101%
0.094%

5% Uniformity Picture  

LG 38GL950G-B 5% Uniformity Picture
Dell Alienware AW3420DW 5% Uniformity Picture

5% Std. Dev. 
 

0.633%
0.305%

5% DSE 
 

0.039%
0.035%
Show Text 

Black Uniformity 
 

6.3
5.9

Native Black Uniformity Picture  

LG 38GL950G-B Native Black Uniformity Picture
Dell Alienware AW3420DW Native Black Uniformity Picture

Native Std. Dev. 
 

1.798%
2.079%

Black Uniformity Picture With Local Dimming  

LG 38GL950G-B Black Uniformity Picture With Local Dimming
Dell Alienware AW3420DW Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Pre Calibration 
 

8.4
6.7

Pre Calibration Picture  

LG 38GL950G-B Pre Calibration Picture
Dell Alienware AW3420DW Pre Calibration Picture

Pre Gamma Curve Picture  

LG 38GL950G-B Pre Gamma Curve Picture
Dell Alienware AW3420DW Pre Gamma Curve Picture

Pre Color Picture  

LG 38GL950G-B Pre Color Picture
Dell Alienware AW3420DW Pre Color Picture

Picture Mode 
 

sRGB
Standard

Luminance 
 

202 cd/m²
211 cd/m²

Luminance Settings 
 

32
80

Contrast Setting 
 

70
75

RGB Controls 
 

Default
100-100-100

Gamma Setting 
 

Default
No Gamma Setting

Color Temperature 
 

6,311 K
5,949 K

White Balance dE 
 

2.41
3.49

Color dE 
 

1.86
3.83

Gamma 
 

2.13
2.16
Show Text 

Post Calibration 
 

9.8
9.7

Post Calibration Picture  

LG 38GL950G-B Post Calibration Picture
Dell Alienware AW3420DW Post Calibration Picture

Post Gamma Curve Picture  

LG 38GL950G-B Post Gamma Curve Picture
Dell Alienware AW3420DW Post Gamma Curve Picture

Post Color Picture  

LG 38GL950G-B Post Color Picture
Dell Alienware AW3420DW Post Color Picture

Picture Mode 
 

Gamer 1
Custom Color

Luminance 
 

102 cd/m²
100 cd/m²

Luminance Settings 
 

10
35

Contrast Setting 
 

68
79

RGB Controls 
 

49-48-56
81-84-94

Gamma Setting 
 

Mode 2
No Gamma Setting

Color Temperature 
 

6,484 K
6,519 K

White Balance dE 
 

0.47
0.46

Color dE 
 

0.33
0.40

Gamma 
 

2.18
2.17
Show Text 

SDR Color Gamut 
 

9.3
9.2

Color Gamut sRGB Picture  

LG 38GL950G-B Color Gamut sRGB Picture
Dell Alienware AW3420DW Color Gamut sRGB Picture

sRGB xy 
 

99.4%
99.4%

Color Gamut ARGB Picture  

LG 38GL950G-B Color Gamut ARGB Picture
Dell Alienware AW3420DW Color Gamut ARGB Picture

Adobe RGB xy 
 

86.1%
85.5%

sRGB Picture Mode 
 

Gamer 1
Custom Color

Adobe RGB Picture Mode 
 

Gamer 1
Custom Color
Show Text 

SDR Color Volume 
 

9.4
9.4

sRGB Color Volume ITP Picture  

LG 38GL950G-B sRGB Color Volume ITP Picture
Dell Alienware AW3420DW sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

97.1%
97.6%

Adobe RGB Color Volume ITP Picture  

LG 38GL950G-B Adobe RGB Color Volume ITP Picture
Dell Alienware AW3420DW Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

90.1%
90.4%

sRGB Picture Mode 
 

Gamer 1
Custom Color

Adobe RGB Picture Mode 
 

Gamer 1
Custom Color
Show Text 

HDR Color Gamut 
 

7.7
0.0

Wide Color Gamut 
 

Yes
N/A

Color Gamut DCI-P3 Picture  

LG 38GL950G-B Color Gamut DCI-P3 Picture
Dell Alienware AW3420DW Color Gamut DCI-P3 Picture

DCI P3 xy 
 

84.4%
N/A

Color Gamut Rec.2020 Picture  

LG 38GL950G-B Color Gamut Rec.2020 Picture
Dell Alienware AW3420DW Color Gamut Rec.2020 Picture

Rec. 2020 xy 
 

69.3%
N/A

DCI P3 Picture Mode 
 

Gamer 1
No HDR

Rec. 2020 Picture Mode 
 

Gamer 1
No HDR
Show Text 

HDR Color Volume 
 

7.4
0.0

P3 Color Volume ITP Picture  

LG 38GL950G-B P3 Color Volume ITP Picture
Dell Alienware AW3420DW P3 Color Volume ITP Picture

DCI-P3 In ICtCp 
 

81.8%
N/A

2020 Color Volume ITP Picture  

LG 38GL950G-B 2020 Color Volume ITP Picture
Dell Alienware AW3420DW 2020 Color Volume ITP Picture

Rec. 2020 In ICtCp 
 

65.1%
N/A

DCI P3 Picture Mode 
 

Gamer 1
No HDR

Rec. 2020 Picture Mode 
 

Gamer 1
No HDR
Show Text 

Image Retention 
 

10
10

Image Retention Picture  

LG 38GL950G-B Image Retention Picture
Dell Alienware AW3420DW 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 
 

0.04%
0.00%

IR After 8 Min Recovery 
 

0.02%
0.00%

IR After 10 Min Recovery 
 

0.00%
0.00%
Show Text 

Gradient 
 

9.8
8.4

Gradient Picture  

LG 38GL950G-B Gradient Picture
Dell Alienware AW3420DW Gradient Picture

Color Depth 
 

10 Bit
8 Bit
Show Text 

Color Bleed 
 

10
10

Color Bleed Horizontal  

LG 38GL950G-B Color Bleed Horizontal
Dell Alienware AW3420DW Color Bleed Horizontal

Pixel Row Error 
 

0.003%
0.000%

Color Bleed Vertical  

LG 38GL950G-B Color Bleed Vertical
Dell Alienware AW3420DW Color Bleed Vertical

Pixel Column Error 
 

0.005%
0.000%
Show Text 

Reflections 
 

7.3
6.5

Average Room  

LG 38GL950G-B Average Room
Dell Alienware AW3420DW Average Room

Average Room Off Picture  

LG 38GL950G-B Average Room Off Picture
Dell Alienware AW3420DW Average Room Off Picture

Bright Room Off Picture  

LG 38GL950G-B Bright Room Off Picture
Dell Alienware AW3420DW Bright Room Off Picture

Screen Finish 
 

Matte
Matte

Total Reflections 
 

5.8%
7.1%

Indirect Reflections 
 

3.4%
3.5%

Calculated Direct Reflections 
 

2.3%
3.6%
Show Text 

Text Clarity 
 

7.5
7.5

ClearType On  

LG 38GL950G-B ClearType On
Dell Alienware AW3420DW ClearType On

Pixel Type 
 

IPS
IPS

ClearType Off  

LG 38GL950G-B ClearType Off
Dell Alienware AW3420DW ClearType Off

Pixels  

LG 38GL950G-B Pixels
Dell Alienware AW3420DW Pixels

Sub-Pixel Layout 
 

RGB
RGB
Show Text 
Motion

Response Time @ Max Refresh Rate 
 

9.3
8.7

Motion Blur Picture  

LG 38GL950G-B Motion Blur Picture
Dell Alienware AW3420DW Motion Blur Picture

Response Time Table  

LG 38GL950G-B Response Time Table
Dell Alienware AW3420DW Response Time Table

Best Overdrive Setting 
 

Normal
Fast

Rise / Fall Time 
 

4.5 ms
2.9 ms

Total Response Time 
 

8.5 ms
11.4 ms

Overshoot Error 
 

0.0%
11.0%

Dark Rise / Fall Time 
 

5.0 ms
3.1 ms

Dark Total Response Time 
 

9.4 ms
11.0 ms

Dark Overshoot Error 
 

0.0%
13.2%
Show Text 

Response Time @ 60Hz 
 

9.3
8.3

Motion Blur Picture  

LG 38GL950G-B Motion Blur Picture
Dell Alienware AW3420DW Motion Blur Picture

Response Time Table  

LG 38GL950G-B Response Time Table
Dell Alienware AW3420DW Response Time Table

Best Overdrive Setting 
 

Normal
Fast

Rise / Fall Time 
 

4.5 ms
3.3 ms

Total Response Time 
 

8.5 ms
15.9 ms

Overshoot Error 
 

0%
7.3%

Dark Rise / Fall Time 
 

5.0 ms
3.6 ms

Dark Total Response Time 
 

8.6 ms
15.5 ms

Dark Overshoot Error 
 

0.0%
7.8%
Show Text 

Image Flicker 
 

10
10

Backlight Picture  

LG 38GL950G-B Backlight Picture
Dell Alienware AW3420DW Backlight Picture

Flicker-Free  

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz
Show Text 

Black Frame Insertion (BFI) 
 

0.0
0.0

Black Frame Insertion (BFI) 
 

No BFI
No BFI

BFI Picture  

LG 38GL950G-B BFI Picture
Dell Alienware AW3420DW BFI Picture

BFI Frequency Picture  

LG 38GL950G-B BFI Frequency Picture
Dell Alienware AW3420DW BFI Frequency Picture

BFI Maximum Frequency 
 

N/A
N/A

BFI Minimum Frequency 
 

N/A
N/A
Show Text 

Refresh Rate 
 

9.2
8.7

Variable Refresh Rate 
 

G-SYNC
G-SYNC

Native 
 

144 Hz
120 Hz

Max Refresh Rate 
 

175 Hz
120 Hz

Variable Refresh Rate 
 

Yes
Yes

FreeSync 
 

Compatible (Tested)
Compatible (Tested)

G-SYNC 
 

Yes (Native)
Yes (Native)

VRR Maximum 
 

175 Hz
120 Hz

VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR Supported Connectors  

DisplayPort
DisplayPort
Show Text 
Inputs

Input Lag 
 

9.5
9.4

Native Resolution 
 

3.7 ms
5.2 ms

Native Resolution @ 60Hz 
 

12.2 ms
13.1 ms

Variable Refresh Rate 
 

4.7 ms
5.2 ms

Variable Refresh Rate @ 60Hz 
 

14.0 ms
13.0 ms

10 Bit HDR 
 

N/A
N/A

Black Frame Insertion (BFI) 
 

N/A
N/A
Show Text 

Resolution And Size 
 

8.9
8.7

Native Resolution  

3840 x 1600
3440 x 1440

Aspect Ratio  

21:9
21:9

Megapixels  

6.1 MP
5.0 MP

Pixel Density 
 

111 PPI
109 PPI

Screen Diagonal  

37.5"
34.1"

Screen Area  

498 in²
415 in²
Show Text 

Inputs  

Inputs 1  

LG 38GL950G-B Inputs 1
Dell Alienware AW3420DW Inputs 1

Inputs 2  

LG 38GL950G-B Inputs 2
Dell Alienware AW3420DW Inputs 2

Total Inputs  

DisplayPort  

1 (DP 1.4)
1 (DP 1.2)

Mini DisplayPort  

No
No

HDMI  

1 (HDMI 2.0)
1 (HDMI 1.4)

DVI  

No
No

VGA  

No
No

DisplayPort Out  

No
No

USB  

2 (USB 3.0)
4 (USB 3.0)

USB C  

No
No

Analog Audio Out 3.5mm  

1
2

Microphone In 3.5mm  

No
No

Digital Optical Audio Out  

No
No

Analog Audio Out RCA  

No
No

Power Supply  

External Brick
Internal
Show Text 
Features

Additional Features 
 

RGB Illumination 
 

Controllable
Controllable

Speakers 
 

No
No

HDR10  

Yes
No

Multiple Input Display 
 

PIP + PBP
No
Show Text 

On-Screen Display (OSD)  

OSD Picture  

LG 38GL950G-B OSD Picture
Dell Alienware AW3420DW OSD Picture

Controls  

Controls Picture  

LG 38GL950G-B Controls Picture
Dell Alienware AW3420DW Controls Picture
Show Text 

In The Box  

In The Box Picture  

LG 38GL950G-B In The Box Picture
Dell Alienware AW3420DW In The Box Picture
Show Text 

Check Price

34"
AW3420DW
B&H
38"
38GL950G-B
B&H

LG 38GL950G-B

Dell Alienware AW3420DW

Comments

  1. Comparison

Dell Alienware AW3420DW vs LG 38GL950G-B: Main Discussion

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