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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 34GK950F-B vs LG 38GL950G-B

Side-by-Side Comparison

Products

LG 34GK950F-B
LG 38GL950G-B

Tested using Methodology v1.1

Updated Sep 03, 2021 02:07 AM

SEE PRICE
Amazon.com

Tested using Methodology v1.1

Updated Sep 03, 2021 12:40 AM

SEE PRICE
Amazon.com
LG 34GK950F-B Picture
LG 38GL950G-B Picture

Variants

  • 34GK950F (34")
  • 38GL950G-B (38")

Our Verdict

LG 34GK950F-B

LG 38GL950G-B

Overall, the LG 38GL950G-B is slightly better than the LG 34GK950F-B. The 38GL950G-B has a faster response time and its refresh rate can be overclocked up to 175Hz. It also has a higher peak brightness, a bigger screen, and it comes with a Picture-in-Picture mode. However, the 34GK950F-B has better viewing angles and a black frame insertion feature. The 38GL950G-B is a native G-SYNC monitor while the 34GK950F-B is FreeSync.

0 

Check Price

38"
38GL950G-B
B&H
34"
34GK950F
B&H
38"
38GL950G-B
BestBuy.com
38"
38GL950G-B
Walmart.com

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

7.8
8.0
No major differences between these monitors for mixed usage. See full list of tests below.

Full Comparison

Design

Style  

Design Picture  

LG 34GK950F-B Design Picture
LG 38GL950G-B Design Picture

Size  

34"
38"

Curved  

Yes
Yes

Curve Radius  

1800R
2300R

Weight (without stand) 
 

12.8 lbs (5.8 kg)
16.5 lbs (7.5 kg)

Weight (with stand) 
 

16.8 lbs (7.6 kg)
21.8 lbs (9.9 kg)
Show Text 

Stand  

Stand Picture  

LG 34GK950F-B Stand Picture
LG 38GL950G-B Stand Picture

Width 
 

22.1" (56.1 cm)
18.9" (48.0 cm)

Depth 
 

11.2" (28.4 cm)
11.3" (28.7 cm)
Show Text 

Ergonomics 
 

5.1
4.5

Ergonomics Picture  

LG 34GK950F-B Ergonomics Picture
LG 38GL950G-B Ergonomics Picture

Height Adjustment 
 

4.3" (10.9 cm)
4.3" (11.0 cm)

Switch Portrait/Landscape  

No
No

Swivel Range  

-15° to 15°
No swivel

Tilt Range  

-15° to 5°
-15° to 5°
Show Text 

Back  

Back Picture  

LG 34GK950F-B Back Picture
LG 38GL950G-B Back Picture

Wall Mount  

VESA 100x100
VESA 100x100
Show Text 

Borders  

Borders Picture  

LG 34GK950F-B Borders Picture
LG 38GL950G-B Borders Picture

Borders 
 

0.4" (1.0 cm)
0.4" (1.1 cm)
Show Text 

Thickness  

Thickness Picture  

LG 34GK950F-B Thickness Picture
LG 38GL950G-B Thickness Picture

Thickness (with stand) 
 

10.1" (25.7 cm)
9.4" (24.0 cm)

Thickness (without stand) 
 

4.2" (10.7 cm)
4.6" (11.8 cm)
Show Text 

Build Quality 
 

7.0
7.5

Build Quality Picture  

LG 34GK950F-B Build Quality Picture
LG 38GL950G-B Build Quality Picture
Show Text 
Picture Quality

Contrast 
 

5.6
5.8

Checkerboard Picture  

LG 34GK950F-B Checkerboard Picture
LG 38GL950G-B Checkerboard Picture

Native Contrast 
 

810 : 1
917 : 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 
 

7.9
8.4

SDR Real Scene 
 

350 cd/m²
445 cd/m²

SDR Peak 2% Window 
 

332 cd/m²
464 cd/m²

SDR Peak 10% Window 
 

332 cd/m²
465 cd/m²

SDR Peak 25% Window 
 

333 cd/m²
466 cd/m²

SDR Peak 50% Window 
 

333 cd/m²
466 cd/m²

SDR Peak 100% Window 
 

333 cd/m²
466 cd/m²

SDR Sustained 2% Window 
 

332 cd/m²
464 cd/m²

SDR Sustained 10% Window 
 

332 cd/m²
465 cd/m²

SDR Sustained 25% Window 
 

333 cd/m²
466 cd/m²

SDR Sustained 50% Window 
 

333 cd/m²
466 cd/m²

SDR Sustained 100% Window 
 

333 cd/m²
466 cd/m²

SDR ABL 
 

0.000
0.000
Show Text 

HDR Peak Brightness 
 

6.8
7.2

HDR Real Scene 
 

412 cd/m²
482 cd/m²

HDR Peak 2% Window 
 

401 cd/m²
509 cd/m²

HDR Peak 10% Window 
 

401 cd/m²
510 cd/m²

HDR Peak 25% Window 
 

402 cd/m²
511 cd/m²

HDR Peak 50% Window 
 

402 cd/m²
512 cd/m²

HDR Peak 100% Window 
 

413 cd/m²
512 cd/m²

HDR Sustained 2% Window 
 

400 cd/m²
509 cd/m²

HDR Sustained 10% Window 
 

401 cd/m²
510 cd/m²

HDR Sustained 25% Window 
 

402 cd/m²
511 cd/m²

HDR Sustained 50% Window 
 

402 cd/m²
511 cd/m²

HDR Sustained 100% Window 
 

402 cd/m²
511 cd/m²

HDR ABL 
 

0.000
0.000
Show Text 

Horizontal Viewing Angle 
 

8.7
7.5

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

LG 34GK950F-B Horizontal Chroma Graph
LG 38GL950G-B Horizontal Chroma Graph

Color Washout From Left 
 

49°
42°

Color Washout From Right 
 

48°
43°

Horizontal Hue Graph  

LG 34GK950F-B Horizontal Hue Graph
LG 38GL950G-B Horizontal Hue Graph

Color Shift From Left 
 

59°
50°

Color Shift From Right 
 

56°
53°

Horizontal Lightness Graph  

LG 34GK950F-B Horizontal Lightness Graph
LG 38GL950G-B Horizontal Lightness Graph

Brightness Loss From Left 
 

50°
46°

Brightness Loss From Right 
 

50°
48°

Black Level Raise From Left 
 

70°
70°

Black Level Raise From Right 
 

70°
32°

Gamma Shift From Left 
 

60°
39°

Gamma Shift From Right 
 

62°
36°
Show Text 

Vertical Viewing Angle 
 

6.8
7.2

Vertical Viewing Angle Video  

Vertical Chroma Graph  

LG 34GK950F-B Vertical Chroma Graph
LG 38GL950G-B Vertical Chroma Graph

Color Washout From Below 
 

28°
32°

Color Washout From Above 
 

29°
32°

Vertical Hue Graph  

LG 34GK950F-B Vertical Hue Graph
LG 38GL950G-B Vertical Hue Graph

Color Shift From Below 
 

35°
39°

Color Shift From Above 
 

39°
39°

Vertical Lightness Graph  

LG 34GK950F-B Vertical Lightness Graph
LG 38GL950G-B Vertical Lightness Graph

Brightness Loss From Below 
 

31°
34°

Brightness Loss From Above 
 

33°
34°

Black Level Raise From Below 
 

70°
70°

Black Level Raise From Above 
 

70°
70°

Gamma Shift From Below 
 

29°
44°

Gamma Shift From Above 
 

32°
39°
Show Text 

Gray Uniformity 
 

8.6
8.6

50% Uniformity Picture  

LG 34GK950F-B 50% Uniformity Picture
LG 38GL950G-B 50% Uniformity Picture

50% Std. Dev. 
 

2.988%
3.858%

50% DSE 
 

0.116%
0.101%

5% Uniformity Picture  

LG 34GK950F-B 5% Uniformity Picture
LG 38GL950G-B 5% Uniformity Picture

5% Std. Dev. 
 

0.354%
0.633%

5% DSE 
 

0.039%
0.039%
Show Text 

Black Uniformity 
 

4.3
6.3

Native Black Uniformity Picture  

LG 34GK950F-B Native Black Uniformity Picture
LG 38GL950G-B Native Black Uniformity Picture

Native Std. Dev. 
 

3.155%
1.798%

Black Uniformity Picture With Local Dimming  

LG 34GK950F-B Black Uniformity Picture With Local Dimming
LG 38GL950G-B Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Pre Calibration 
 

8.1
8.4

Pre Calibration Picture  

LG 34GK950F-B Pre Calibration Picture
LG 38GL950G-B Pre Calibration Picture

Pre Gamma Curve Picture  

LG 34GK950F-B Pre Gamma Curve Picture
LG 38GL950G-B Pre Gamma Curve Picture

Pre Color Picture  

LG 34GK950F-B Pre Color Picture
LG 38GL950G-B Pre Color Picture

Picture Mode 
 

Srgb
sRGB

Luminance 
 

180 cd/m²
202 cd/m²

Luminance Settings 
 

30
32

Contrast Setting 
 

N/A
70

RGB Controls 
 

Default
Default

Gamma Setting 
 

Default
Default

Color Temperature 
 

6,183 K
6,311 K

White Balance dE 
 

2.79
2.41

Color dE 
 

2.13
1.86

Gamma 
 

2.25
2.13
Show Text 

Post Calibration 
 

9.6
9.8

Post Calibration Picture  

LG 34GK950F-B Post Calibration Picture
LG 38GL950G-B Post Calibration Picture

Post Gamma Curve Picture  

LG 34GK950F-B Post Gamma Curve Picture
LG 38GL950G-B Post Gamma Curve Picture

Post Color Picture  

LG 34GK950F-B Post Color Picture
LG 38GL950G-B Post Color Picture

Picture Mode 
 

Gamer 2
Gamer 1

Luminance 
 

101 cd/m²
102 cd/m²

Luminance Settings 
 

14
10

Contrast Setting 
 

60
68

RGB Controls 
 

51-50-51
49-48-56

Gamma Setting 
 

Mode 2
Mode 2

Color Temperature 
 

6,467 K
6,484 K

White Balance dE 
 

0.69
0.47

Color dE 
 

0.57
0.33

Gamma 
 

2.17
2.18
Show Text 

SDR Color Gamut 
 

9.3
9.3

Color Gamut sRGB Picture  

LG 34GK950F-B Color Gamut sRGB Picture
LG 38GL950G-B Color Gamut sRGB Picture

sRGB xy 
 

99.2%
99.4%

Color Gamut ARGB Picture  

LG 34GK950F-B Color Gamut ARGB Picture
LG 38GL950G-B Color Gamut ARGB Picture

Adobe RGB xy 
 

86.8%
86.1%

sRGB Picture Mode 
 

Gamer 2
Gamer 1

Adobe RGB Picture Mode 
 

Gamer 2
Gamer 1
Show Text 

SDR Color Volume 
 

9.4
9.4

sRGB Color Volume ITP Picture  

LG 34GK950F-B sRGB Color Volume ITP Picture
LG 38GL950G-B sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

97.4%
97.1%

Adobe RGB Color Volume ITP Picture  

LG 34GK950F-B Adobe RGB Color Volume ITP Picture
LG 38GL950G-B Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

91.4%
90.1%

sRGB Picture Mode 
 

Gamer 2
Gamer 1

Adobe RGB Picture Mode 
 

Gamer 2
Gamer 1
Show Text 

HDR Color Gamut 
 

7.7
7.7

Wide Color Gamut 
 

Yes
Yes

Color Gamut DCI-P3 Picture  

LG 34GK950F-B Color Gamut DCI-P3 Picture
LG 38GL950G-B Color Gamut DCI-P3 Picture

DCI P3 xy 
 

85.4%
84.4%

Color Gamut Rec.2020 Picture  

LG 34GK950F-B Color Gamut Rec.2020 Picture
LG 38GL950G-B Color Gamut Rec.2020 Picture

Rec. 2020 xy 
 

69.5%
69.3%

DCI P3 Picture Mode 
 

Gamer 2
Gamer 1

Rec. 2020 Picture Mode 
 

Gamer 2
Gamer 1
Show Text 

HDR Color Volume 
 

6.5
7.4

P3 Color Volume ITP Picture  

LG 34GK950F-B P3 Color Volume ITP Picture
LG 38GL950G-B P3 Color Volume ITP Picture

DCI-P3 In ICtCp 
 

67.1%
81.8%

2020 Color Volume ITP Picture  

LG 34GK950F-B 2020 Color Volume ITP Picture
LG 38GL950G-B 2020 Color Volume ITP Picture

Rec. 2020 In ICtCp 
 

61.6%
65.1%

DCI P3 Picture Mode 
 

Gamer 2
Gamer 1

Rec. 2020 Picture Mode 
 

Gamer 2
Gamer 1
Show Text 

Image Retention 
 

10
10

Image Retention Picture  

LG 34GK950F-B Image Retention Picture
LG 38GL950G-B 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%
0.04%

IR After 8 Min Recovery 
 

0.00%
0.02%

IR After 10 Min Recovery 
 

0.00%
0.00%
Show Text 

Gradient 
 

9.7
9.8

Gradient Picture  

LG 34GK950F-B Gradient Picture
LG 38GL950G-B Gradient Picture

Color Depth 
 

10 Bit
10 Bit
Show Text 

Color Bleed 
 

9.3
10

Color Bleed Horizontal  

LG 34GK950F-B Color Bleed Horizontal
LG 38GL950G-B Color Bleed Horizontal

Pixel Row Error 
 

0.003%
0.003%

Color Bleed Vertical  

LG 34GK950F-B Color Bleed Vertical
LG 38GL950G-B Color Bleed Vertical

Pixel Column Error 
 

0.137%
0.005%
Show Text 

Reflections 
 

6.4
7.3

Average Room  

LG 34GK950F-B Average Room
LG 38GL950G-B Average Room

Average Room Off Picture  

LG 34GK950F-B Average Room Off Picture
LG 38GL950G-B Average Room Off Picture

Bright Room Off Picture  

LG 34GK950F-B Bright Room Off Picture
LG 38GL950G-B Bright Room Off Picture

Screen Finish 
 

Matte
Matte

Total Reflections 
 

7.4%
5.8%

Indirect Reflections 
 

3.7%
3.4%

Calculated Direct Reflections 
 

3.6%
2.3%
Show Text 

Text Clarity 
 

7.5
7.5

ClearType On  

LG 34GK950F-B ClearType On
LG 38GL950G-B ClearType On

Pixel Type 
 

IPS
IPS

ClearType Off  

LG 34GK950F-B ClearType Off
LG 38GL950G-B ClearType Off

Pixels  

LG 34GK950F-B Pixels
LG 38GL950G-B Pixels

Sub-Pixel Layout 
 

RGB
RGB
Show Text 
Motion

Response Time @ Max Refresh Rate 
 

9.0
9.3

Motion Blur Picture  

LG 34GK950F-B Motion Blur Picture
LG 38GL950G-B Motion Blur Picture

Response Time Table  

LG 34GK950F-B Response Time Table
LG 38GL950G-B Response Time Table

Best Overdrive Setting 
 

Fast
Normal

Rise / Fall Time 
 

4.2 ms
4.5 ms

Total Response Time 
 

9.7 ms
8.5 ms

Overshoot Error 
 

5.7%
0.0%

Dark Rise / Fall Time 
 

4.1 ms
5.0 ms

Dark Total Response Time 
 

10.5 ms
9.4 ms

Dark Overshoot Error 
 

9.0%
0.0%
Show Text 

Response Time @ 60Hz 
 

8.2
9.3

Motion Blur Picture  

LG 34GK950F-B Motion Blur Picture
LG 38GL950G-B Motion Blur Picture

Response Time Table  

LG 34GK950F-B Response Time Table
LG 38GL950G-B Response Time Table

Best Overdrive Setting 
 

Normal
Normal

Rise / Fall Time 
 

5.5 ms
4.5 ms

Total Response Time 
 

15 ms
8.5 ms

Overshoot Error 
 

3.8%
0%

Dark Rise / Fall Time 
 

5.7 ms
5.0 ms

Dark Total Response Time 
 

15.8 ms
8.6 ms

Dark Overshoot Error 
 

7.2%
0.0%
Show Text 

Image Flicker 
 

10
10

Backlight Picture  

LG 34GK950F-B Backlight Picture
LG 38GL950G-B Backlight Picture

Flicker-Free  

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz
Show Text 

Black Frame Insertion (BFI) 
 

6.0
0.0

Black Frame Insertion (BFI) 
 

Yes
No BFI

BFI Picture  

LG 34GK950F-B BFI Picture
LG 38GL950G-B BFI Picture

BFI Frequency Picture  

LG 34GK950F-B BFI Frequency Picture
LG 38GL950G-B BFI Frequency Picture

BFI Maximum Frequency 
 

144 Hz
N/A

BFI Minimum Frequency 
 

120 Hz
N/A
Show Text 

Refresh Rate 
 

9.0
9.2

Variable Refresh Rate 
 

FreeSync
G-SYNC

Native 
 

144 Hz
144 Hz

Max Refresh Rate 
 

144 Hz
175 Hz

Variable Refresh Rate 
 

Yes
Yes

FreeSync 
 

Yes
Compatible (Tested)

G-SYNC 
 

Compatible (Tested)
Yes (Native)

VRR Maximum 
 

144 Hz
175 Hz

VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR Supported Connectors  

DisplayPort, HDMI
DisplayPort
Show Text 
Inputs

Input Lag 
 

9.4
9.5

Native Resolution 
 

4.2 ms
3.7 ms

Native Resolution @ 60Hz 
 

23.8 ms
12.2 ms

Variable Refresh Rate 
 

5.2 ms
4.7 ms

Variable Refresh Rate @ 60Hz 
 

10.1 ms
14.0 ms

10 Bit HDR 
 

4.2 ms
N/A

Black Frame Insertion (BFI) 
 

7.2 ms
N/A
Show Text 

Resolution And Size 
 

8.7
8.9

Native Resolution  

3440 x 1440
3840 x 1600

Aspect Ratio  

21:9
21:9

Megapixels  

5.0 MP
6.1 MP

Pixel Density 
 

109 PPI
111 PPI

Screen Diagonal  

34.1"
37.5"

Screen Area  

415 in²
498 in²
Show Text 

Inputs  

Inputs 1  

LG 34GK950F-B Inputs 1
LG 38GL950G-B Inputs 1

Inputs 2  

LG 34GK950F-B Inputs 2
LG 38GL950G-B Inputs 2

Total Inputs  

DisplayPort  

1 (DP 1.4)
1 (DP 1.4)

Mini DisplayPort  

No
No

HDMI  

2 (HDMI 2.0)
1 (HDMI 2.0)

DVI  

No
No

VGA  

No
No

DisplayPort Out  

No
No

USB  

2 (USB 3.0)
2 (USB 3.0)

USB C  

No
No

Analog Audio Out 3.5mm  

1
1

Microphone In 3.5mm  

No
No

Digital Optical Audio Out  

No
No

Analog Audio Out RCA  

No
No

Power Supply  

External Brick
External Brick
Show Text 
Features

Additional Features 
 

RGB Illumination 
 

No
Controllable

Speakers 
 

No
No

HDR10  

Yes
Yes

Multiple Input Display 
 

No
PIP + PBP
Show Text 

On-Screen Display (OSD)  

OSD Picture  

LG 34GK950F-B OSD Picture
LG 38GL950G-B OSD Picture

Controls  

Controls Picture  

LG 34GK950F-B Controls Picture
LG 38GL950G-B Controls Picture
Show Text 

In The Box  

In The Box Picture  

LG 34GK950F-B In The Box Picture
LG 38GL950G-B In The Box Picture
Show Text 

Check Price

38"
38GL950G-B
B&H
34"
34GK950F
B&H
38"
38GL950G-B
BestBuy.com
38"
38GL950G-B
Walmart.com

LG 34GK950F-B

LG 38GL950G-B

Comments

  1. Comparison

LG 34GK950F-B vs LG 38GL950G-B: Main Discussion

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