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  1. Home
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  3. Compare

LG 34UC79G-B vs Samsung C34F791/CF791

Which Monitor Is Better?

    Top
    Main Differences
    Design
      StyleStandErgonomicsBackBordersThicknessBuild Quality
    Picture Quality
      ContrastLocal DimmingSDR Peak BrightnessHDR Peak BrightnessHorizontal Viewing AngleVertical Viewing AngleGray UniformityBlack UniformityPre CalibrationPost CalibrationSDR Color GamutSDR Color VolumeHDR Color GamutHDR Color VolumeImage RetentionGradientColor BleedReflections
    Motion
      Motion BlurImage FlickerRefresh Rate
    Inputs
      Input LagResolution and SizeInputsTotal Inputs
    Features
      Additional FeaturesOn-Screen Display (OSD)ControlsIn The Box
    Comments

Products

LG 34UC79G-B
Samsung C34F791/CF791

Tested using Methodology v1.0

Updated Jun 07, 2024 08:38 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.0

Updated Jun 07, 2024 08:04 PM

SEE PRICE
Amazon.com
LG 34UC79G-B Picture
Samsung C34F791/CF791 Picture
Size34"
LCD Type
IPS
Variable Refresh Rate
FreeSync
Native Resolution2560 x 1080
Native Refresh Rate
144 Hz
Size34"
LCD Type
VA
Variable Refresh Rate
FreeSync
Native Resolution3440 x 1440
Native Refresh Rate
100 Hz

Our Verdict

LG 34UC79G-B

Samsung C34F791/CF791

The LG 34UC79G-B is a better monitor than the Samsung C34F791/CF791 for almost every use, unless you'll be using it in a dark room. The Samsung CF791 has better resolution giving you more details on the screen, but the LG34UC79G has better viewing angles, and you'll enjoy gaming more as it has significantly better input lag and marginally better image flicker to clear blur.

0 

Variants

  • 34UC79G-B (34")
  • C34F791 (34")

Review

See LG 34UC79G-B Review
See Samsung C34F791/CF791 Review
0 
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Check Price

34"
34UC79G-B
SEE PRICE
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34"
C34F791
SEE PRICE
Amazon.com
34"
34UC79G-B
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34"
C34F791
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34"
34UC79G-B
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34"
C34F791
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34UC79G-B
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C34F791
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34UC79G-B
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34"
C34F791
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Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 
 

7.5
6.9

Vertical Viewing Angle 
 

7.8
4.4

Horizontal Viewing Angle 
 

7.6
4.9

Input Lag 
 

9.5
7.2

Resolution and Size 
 

8.0
8.9

Full Comparison

Design

Style  

Design Picture 
 

Compare High-Res
LG 34UC79G-B Design Picture
Compare High-Res
Samsung C34F791/CF791 Design Picture

Size  

34"
34"

Curved  

Yes
Yes

Curve radius  

3800R
1500R

Weight (without stand) 
 

13.9 lbs (6.3 kg)
13.2 lbs (6.0 kg)

Weight (with stand) 
 

18.5 lbs (8.4 kg)
16.5 lbs (7.5 kg)
Show Text 

Stand  

Stand picture 
 

Compare High-Res
LG 34UC79G-B Stand picture
Compare High-Res
Samsung C34F791/CF791 Stand picture

Width 
 

19.1" (48.5 cm)
9.7" (24.6 cm)

Depth 
 

10.0" (25.4 cm)
12.2" (31.0 cm)
Show Text 

Ergonomics 
 

4.8
4.7

Ergonomics picture 
 

Compare High-Res
LG 34UC79G-B Ergonomics picture
Compare High-Res
Samsung C34F791/CF791 Ergonomics picture

Height Adjustment 
 

4.7" (11.9 cm)
3.9" (9.9 cm)

Switch portrait/landscape  

No
No

Swivel Range  

N/A
N/A

Tilt Range  

-22.5° to 2.5°
-20° to 15°
Show Text 

Back  

Back picture 
 

Compare High-Res
LG 34UC79G-B Back picture
Compare High-Res
Samsung C34F791/CF791 Back picture

Wall Mount  

VESA 100x100
VESA 100x100
Show Text 

Borders  

Borders picture 
 

Compare High-Res
LG 34UC79G-B Borders picture
Compare High-Res
Samsung C34F791/CF791 Borders picture

Borders 
 

0.6" (1.5 cm)
0.3" (0.8 cm)
Show Text 

Thickness  

Thickness picture 
 

Compare High-Res
LG 34UC79G-B Thickness picture
Compare High-Res
Samsung C34F791/CF791 Thickness picture

Thickness (with stand) 
 

6.3" (16.0 cm)
8.1" (20.6 cm)

Thickness (without stand) 
 

2.0" (5.1 cm)
4.6" (11.7 cm)
Show Text 

Build Quality 
 

7.5
8.0

Build Quality picture 
 

Compare High-Res
LG 34UC79G-B Build Quality picture
Compare High-Res
Samsung C34F791/CF791 Build Quality picture
Show Text 
Picture Quality

Contrast 
 

6.6
7.6

Checkerboard Picture 
 

Compare High-Res
LG 34UC79G-B Checkerboard Picture
Compare High-Res
Samsung C34F791/CF791 Checkerboard Picture

LCD Type 
 

IPS
VA

Native Contrast 
 

1,390 : 1
2,527 : 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 
 

Direct
Direct
Show Text 

SDR Peak Brightness 
 

6.5
7.0

SDR Real Scene 
 

222 cd/m²
264 cd/m²

SDR Peak 2% Window 
 

249 cd/m²
247 cd/m²

SDR Peak 10% Window 
 

249 cd/m²
246 cd/m²

SDR Peak 25% Window 
 

249 cd/m²
246 cd/m²

SDR Peak 50% Window 
 

249 cd/m²
245 cd/m²

SDR Peak 100% Window 
 

249 cd/m²
244 cd/m²

SDR Sustained 2% Window 
 

210 cd/m²
246 cd/m²

SDR Sustained 10% Window 
 

176 cd/m²
246 cd/m²

SDR Sustained 25% Window 
 

190 cd/m²
245 cd/m²

SDR Sustained 50% Window 
 

199 cd/m²
245 cd/m²

SDR Sustained 100% Window 
 

199 cd/m²
244 cd/m²

SDR ABL 
 

0.000
0.001
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 
 

7.6
4.9

Horizontal Viewing Angle Video  

Horizontal Color Shift Picture 
 

Compare High-Res
LG 34UC79G-B Horizontal Color Shift Picture
Compare High-Res
Samsung C34F791/CF791 Horizontal Color Shift Picture

Color Shift from Left 
 

42°
33°

Color Shift from Right 
 

46°
32°

Horizontal Brightness Picture 
 

Compare High-Res
LG 34UC79G-B Horizontal Brightness Picture
Compare High-Res
Samsung C34F791/CF791 Horizontal Brightness Picture

Brightness from Left 
 

50°
45°

Brightness from Right 
 

52°
45°

Horizontal Black Level Picture 
 

Compare High-Res
LG 34UC79G-B Horizontal Black Level Picture
Compare High-Res
Samsung C34F791/CF791 Horizontal Black Level Picture

Black Level from Left 
 

75°
12°

Black Level from Right 
 

75°
11°

Curve Radius  

3,800R
1,500R
Show Text 

Vertical Viewing Angle 
 

7.8
4.4

Vertical Viewing Angle Video  

Vertical Color Shift Picture 
 

Compare High-Res
LG 34UC79G-B Vertical Color Shift Picture
Compare High-Res
Samsung C34F791/CF791 Vertical Color Shift Picture

Color Shift from Below 
 

19°
26°

Color Shift from Above 
 

29°
26°

Vertical Brightness Picture 
 

Compare High-Res
LG 34UC79G-B Vertical Brightness Picture
Compare High-Res
Samsung C34F791/CF791 Vertical Brightness Picture

Brightness from Below 
 

29°
33°

Brightness from Above 
 

34°
33°

Vertical Black Level Picture 
 

Compare High-Res
LG 34UC79G-B Vertical Black Level Picture
Compare High-Res
Samsung C34F791/CF791 Vertical Black Level Picture

Black Level from Below 
 

75°
5°

Black Level from Above 
 

75°
5°
Show Text 

Gray Uniformity 
 

8.3
8.2

50% Uniformity Picture 
 

Compare High-Res
LG 34UC79G-B 50% Uniformity Picture
Compare High-Res
Samsung C34F791/CF791 50% Uniformity Picture

50% Std. Dev. 
 

3.641%
4.408%

50% DSE 
 

0.128%
0.103%

5% Uniformity Picture 
 

Compare High-Res
LG 34UC79G-B 5% Uniformity Picture
Compare High-Res
Samsung C34F791/CF791 5% Uniformity Picture

5% Std. Dev. 
 

0.518%
1.800%

5% DSE 
 

0.069%
0.061%
Show Text 

Black Uniformity 
 

4.8
5.2

Native Black Uniformity Picture 
 

Compare High-Res
LG 34UC79G-B Native Black Uniformity Picture
Compare High-Res
Samsung C34F791/CF791 Native Black Uniformity Picture

Native Std. Dev. 
 

2.782%
2.554%

Black Uniformity Picture with Local Dimming 
 

Compare High-Res
LG 34UC79G-B Black Uniformity Picture with Local Dimming
Compare High-Res
Samsung C34F791/CF791 Black Uniformity Picture with Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Pre Calibration 
 

6.9
7.2

Pre Calibration Picture 
 

Compare High-Res
LG 34UC79G-B Pre Calibration Picture
Compare High-Res
Samsung C34F791/CF791 Pre Calibration Picture

Pre Gamma Curve Picture 
 

Compare High-Res
LG 34UC79G-B Pre Gamma Curve Picture
Compare High-Res
Samsung C34F791/CF791 Pre Gamma Curve Picture

Pre Color Picture 
 

Compare High-Res
LG 34UC79G-B Pre Color Picture
Compare High-Res
Samsung C34F791/CF791 Pre Color Picture

Picture Mode 
 

Custom
Custom

Luminance 
 

283 cd/m²
243 cd/m²

Luminance Settings 
 

100
100

Contrast Setting 
 

70
75

RGB controls 
 

Custom 50-50-50
Cool1

Color Temperature 
 

6,849 K
6,346 K

White Balance dE 
 

3.01
3.46

Color dE 
 

4.04
3.09

Gamma 
 

2.26
2.26
Show Text 

Post Calibration 
 

9.4
9.4

Post Calibration Picture 
 

Compare High-Res
LG 34UC79G-B Post Calibration Picture
Compare High-Res
Samsung C34F791/CF791 Post Calibration Picture

Post Gamma Curve Picture 
 

Compare High-Res
LG 34UC79G-B Post Gamma Curve Picture
Compare High-Res
Samsung C34F791/CF791 Post Gamma Curve Picture

Post Color Picture 
 

Compare High-Res
LG 34UC79G-B Post Color Picture
Compare High-Res
Samsung C34F791/CF791 Post Color Picture

Picture Mode 
 

Custom Color
Custom

Luminance 
 

99 cd/m²
99 cd/m²

Luminance Settings 
 

1
23

Contrast Setting 
 

70
75

RGB Controls 
 

49-51-44
35-44-50

Color Temperature 
 

6,403 K
6,432 K

White Balance dE 
 

0.72
0.63

Color dE 
 

0.81
0.84

Gamma 
 

2.18
2.19
Show Text 

SDR Color Gamut 
 

8.3
8.9

Color Gamut sRGB Picture 
 

Compare High-Res
LG 34UC79G-B Color Gamut sRGB Picture
Compare High-Res
Samsung C34F791/CF791 Color Gamut sRGB Picture

sRGB xy 
 

94.5%
95.6%

Color Gamut ARGB Picture 
 

Compare High-Res
LG 34UC79G-B Color Gamut ARGB Picture
Compare High-Res
Samsung C34F791/CF791 Color Gamut ARGB Picture

Adobe RGB xy 
 

69.5%
80.8%
Show Text 

SDR Color Volume 
 

8.1
9.4

sRGB Color Volume ITP picture 
 

Compare High-Res
LG 34UC79G-B sRGB Color Volume ITP picture
Compare High-Res
Samsung C34F791/CF791 sRGB Color Volume ITP picture

sRGB in ICtCp 
 

88.5%
98.5%

Adobe RGB Color Volume ITP Picture 
 

Compare High-Res
LG 34UC79G-B Adobe RGB Color Volume ITP Picture
Compare High-Res
Samsung C34F791/CF791 Adobe RGB Color Volume ITP Picture

Adobe RGB in ICtCp 
 

72.0%
88.2%
Show Text 

HDR Color Gamut 
 

0.0
0.0

Wide Color Gamut 
 

No
No

Color Gamut DCI-P3 Picture 
 

Compare High-Res
LG 34UC79G-B Color Gamut DCI-P3 Picture
Compare High-Res
Samsung C34F791/CF791 Color Gamut DCI-P3 Picture

DCI P3 xy 
 

N/A
N/A

Color Gamut Rec.2020 Picture 
 

Compare High-Res
LG 34UC79G-B Color Gamut Rec.2020 Picture
Compare High-Res
Samsung C34F791/CF791 Color Gamut Rec.2020 Picture

Rec. 2020 xy 
 

N/A
N/A
Show Text 

HDR Color Volume 
 

0.0
0.0

P3 Color Volume ITP Picture 
 

Compare High-Res
LG 34UC79G-B P3 Color Volume ITP Picture
Compare High-Res
Samsung C34F791/CF791 P3 Color Volume ITP Picture

DCI-P3 in ICtCp 
 

N/A
N/A

2020 Color Volume ITP Picture 
 

Compare High-Res
LG 34UC79G-B 2020 Color Volume ITP Picture
Compare High-Res
Samsung C34F791/CF791 2020 Color Volume ITP Picture

Rec. 2020 in ICtCp 
 

N/A
N/A
Show Text 

Image Retention 
 

10
7.7

Image Retention Picture 
 

Compare High-Res
LG 34UC79G-B Image Retention Picture
Compare High-Res
Samsung C34F791/CF791 Image Retention Picture

IR after 0 min recovery 
 

0.00%
0.11%

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
8.1

Gradient Picture 
 

Compare High-Res
LG 34UC79G-B Gradient Picture
Compare High-Res
Samsung C34F791/CF791 Gradient Picture

Color Depth 
 

8 Bit
8 Bit
Show Text 

Color Bleed 
 

10
10

Color bleed horizontal 
 

Compare High-Res
LG 34UC79G-B Color bleed horizontal
Compare High-Res
Samsung C34F791/CF791 Color bleed horizontal

Pixel row error 
 

0.000%
0.001%

Color bleed vertical 
 

Compare High-Res
LG 34UC79G-B Color bleed vertical
Compare High-Res
Samsung C34F791/CF791 Color bleed vertical

Pixel column error 
 

0.000%
0.001%
Show Text 

Reflections 
 

7.0
7.5

Average room 
 

Compare High-Res
LG 34UC79G-B Average room
Compare High-Res
Samsung C34F791/CF791 Average room

Average room off picture 
 

Compare High-Res
LG 34UC79G-B Average room off picture
Compare High-Res
Samsung C34F791/CF791 Average room off picture

Bright room off picture 
 

Compare High-Res
LG 34UC79G-B Bright room off picture
Compare High-Res
Samsung C34F791/CF791 Bright room off picture
Show Text 
Motion

Motion Blur 
 

8.8
9.0

Motion Blur Picture 
 

Compare High-Res
LG 34UC79G-B Motion Blur Picture
Compare High-Res
Samsung C34F791/CF791 Motion Blur Picture

Response Time Chart 
 

Compare High-Res
LG 34UC79G-B Response Time Chart
Compare High-Res
Samsung C34F791/CF791 Response Time Chart

80% Response Time 
 

4.6 ms
4.0 ms

100% Response Time 
 

13.5 ms
13.7 ms

Best Overdrive Setting 
 

Normal
Faster
Show Text 

Image Flicker 
 

9.3
7.5

Backlight Picture 
 

Compare High-Res
LG 34UC79G-B Backlight Picture
Compare High-Res
Samsung C34F791/CF791 Backlight Picture

Flicker-free  

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz

Black Frame Insertion (BFI) 
 

Yes
No

BFI Picture 
 

Compare High-Res
LG 34UC79G-B BFI Picture
Compare High-Res
Samsung C34F791/CF791 BFI Picture

BFI Frequency Picture 
 

Compare High-Res
LG 34UC79G-B BFI Frequency Picture
Compare High-Res
Samsung C34F791/CF791 BFI Frequency Picture

BFI Maximum Frequency 
 

144 Hz
N/A

BFI Minimum Frequency 
 

100 Hz
N/A
Show Text 

Refresh Rate 
 

9.2
8.8

Variable Refresh Rate 
 

FreeSync
FreeSync

Native Refresh Rate 
 

144 Hz
100 Hz

Factory Overclock 
 

N/A
N/A

Variable Refresh Rate 
 

FreeSync
FreeSync

G-SYNC Compatible 
 

Yes
Partial

VRR Maximum 
 

144 Hz
100 Hz

VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR Maximum With OC 
 

N/A
N/A

VRR Supported Connectors  

DisplayPort
DisplayPort, HDMI
Show Text 
Inputs

Input Lag 
 

9.5
7.2

Native Resolution 
 

4.1 ms
20.7 ms

Non-Native Res @ Native Refresh 
 

N/A
N/A

Native Resolution @ 60 Hz 
 

9.3 ms
26.9 ms

Variable Refresh Rate 
 

4.8 ms
23.6 ms

10 bit HDR 
 

N/A
N/A

Black Frame Insertion (BFI) 
 

8.2 ms
N/A
Show Text 

Resolution and Size 
 

8.0
8.9

Native Resolution  

2560 x 1080
3440 x 1440

Aspect Ratio  

21:9
21:9

Megapixels  

2.8 MP
5.0 MP

Pixel Density  

82 PPI
110 PPI

Screen Diagonal  

34.0"
34.0"

Screen Area  

412 in²
411 in²
Show Text 

Inputs  

Inputs 1 
 

Compare High-Res
LG 34UC79G-B Inputs 1
Compare High-Res
Samsung C34F791/CF791 Inputs 1

Inputs 2 
 

Compare High-Res
LG 34UC79G-B Inputs 2
Compare High-Res
Samsung C34F791/CF791 Inputs 2
Show Text 

Total Inputs  

DisplayPort  

1 (DP 1.2)
1 (DP 1.2)

Mini DisplayPort  

No
No

HDMI  

2 (HDMI 2.0)
2 (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  

2
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 
 

Speakers 
 

No
Yes

HDR10  

No
No

Multiple input display 
 

No
PIP + PBP
Show Text 

On-Screen Display (OSD)  

OSD picture 
 

Compare High-Res
LG 34UC79G-B OSD picture
Compare High-Res
Samsung C34F791/CF791 OSD picture
Show Text 

Controls  

Controls picture 
 

Compare High-Res
LG 34UC79G-B Controls picture
Compare High-Res
Samsung C34F791/CF791 Controls picture
Show Text 

In The Box  

In The Box picture 
 

Compare High-Res
LG 34UC79G-B In The Box picture
Compare High-Res
Samsung C34F791/CF791 In The Box picture
Show Text 

Check Price

34"
34UC79G-B
SEE PRICE
Amazon.com
34"
C34F791
SEE PRICE
Amazon.com
34"
34UC79G-B
SEE PRICE
Walmart.com
34"
C34F791
SEE PRICE
Walmart.com
34"
34UC79G-B
SEARCH
B&H
34"
C34F791
SEARCH
B&H
34"
34UC79G-B
SEARCH
BestBuy.com
34"
C34F791
SEARCH
BestBuy.com
34"
34UC79G-B
SEARCH
LG.com
34"
C34F791
SEARCH
Samsung.com
Back to Top

LG 34UC79G-B

Samsung C34F791/CF791

Comments

  1. Comparison
 • Posted 1 year ago

LG 34UC79G-B vs Samsung C34F791/CF791: Main Discussion

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