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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Accelerated Longevity Test
    3. Build Quality
    4. Ergonomics
    5. Stand
    6. Display
    7. Controls
    8. In The Box
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Brightness
    4. HDR Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Color Accuracy (Pre-Calibration)
    10. Color Accuracy (Post-Calibration)
    11. SDR Color Gamut
    12. HDR Color Gamut
    13. HDR Color Volume
    14. Text Clarity
    15. Reflections
    16. Gradient
    17. SDR Color Volume
  6. Motion
    1. Refresh Rate
    2. Variable Refresh Rate (VRR)
    3. VRR Motion Performance
    4. Refresh Rate Compliance
    5. Response Time @ 60Hz
    6. CAD @ Max Refresh Rate
    7. Response Time @ Max Refresh Rate
    8. CAD @ 120Hz
    9. Response Time @ 120Hz
    10. CAD @ 60Hz
    11. Response Time @ 60Hz
    12. Backlight Strobing (BFI)
    13. VRR Flicker
    14. Image Flicker
  7. Inputs
    1. Input Lag
    2. Resolution
    3. PS5 Compatibility
    4. Xbox Series X|S Compatibility
    5. Inputs Photos
    6. Video And Audio Ports
    7. USB
    8. macOS Compatibility
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
  9. Comments

Sony 42 A90K OLED vs LG C4 42 OLED

Side-by-Side Comparison

Products

Sony 42 A90K OLED
LG C4 42 OLED

Tested using Methodology v1.2

Updated Aug 09, 2023 01:37 PM

SEE PRICE
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Tested using Methodology v2.0.1

Updated Apr 29, 2025 01:46 PM

SEE PRICE
Amazon.com
Sony 42 A90K OLED Picture
LG C4 42 OLED Picture

Variants

  • XR-42A90K (42")
  • OLED42C4PUA (42")

Our Verdict

Sony 42 A90K OLED

LG C4 42 OLED

The Sony 42 A90K OLED and the LG 42 C4 OLED are both 42-inch OLED displays. The C4 is the better option for most people, as it has a slightly higher refresh rate and gets brighter. However, the Sony is still a good option if you can find it for less and don't mind the reduced brightness.

2 

Check Price

42"
OLED42C4PUA
SEE PRICE
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42"
OLED42C4PUA
Amazon.com
42"
XR-42A90K
B&H
 
42"
XR-42A90K
BestBuy.com
 
Read more

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

8.4
No major differences between these monitors for mixed usage. See full list of tests below.

Full Comparison

Design

Style 
 

Design Picture  

Sony 42 A90K OLED Design Picture
LG C4 42 OLED Design Picture

Curved 
 

No
No

Curve Radius 
 

Not Curved
Not Curved
Show Text 

Accelerated Longevity Test 
 

Uniformity Pictures  

Longevity Graph  

Build Quality 
 

9.0
9.0

Build Quality Picture  

Sony 42 A90K OLED Build Quality Picture
LG C4 42 OLED Build Quality Picture
Show Text 

Ergonomics 
 

2.9
0.0

Ergonomics Picture  

Sony 42 A90K OLED Ergonomics Picture
LG C4 42 OLED Ergonomics Picture

Back Picture  

Sony 42 A90K OLED Back Picture
LG C4 42 OLED Back Picture

Height Adjustment 
 

2.8" (7.0 cm)
0.0" (0.0 cm)

Min Height To Top Of Panel 
 

N/A

Tilt Range 
 

No Tilt
No Tilt

Rotate Portrait/Landscape 
 

No
No

Swivel Range 
 

No swivel
No swivel

Wall Mount 
 

VESA 200x200
VESA 300x200
Show Text 

Stand 
 

Stand Picture  

Sony 42 A90K OLED Stand Picture
LG C4 42 OLED Stand Picture

Thickness Picture  

Sony 42 A90K OLED Thickness Picture
LG C4 42 OLED Thickness Picture

Base Width 
 

19.5" (49.6 cm)
28.3" (71.8 cm)

Base Depth 
 

8.9" (22.6 cm)
6.7" (17.1 cm)

Thickness (With Display) 
 

5.5" (13.9 cm)
3.9" (10.0 cm)

Weight (With Display) 
 

34.1 lbs (15.5 kg)
21.6 lbs (9.8 kg)
Show Text 

Display 
 

Display Picture  

Sony 42 A90K OLED Display Picture
LG C4 42 OLED Display Picture

Size 
 

42"
42"

Housing Width 
 

36.7" (93.3 cm)
36.7" (93.2 cm)

Housing Height 
 

21.5" (54.7 cm)
21.3" (54.0 cm)

Thickness (Without Stand) 
 

2.2" (5.7 cm)
1.5" (3.9 cm)

Weight (Without Stand) 
 

27.7 lbs (12.6 kg)
21.2 lbs (9.6 kg)

Borders Size (Bezels)  
 

0.2" (0.6 cm)
0.2" (0.6 cm)

Controls 
 

Controls Picture  

Sony 42 A90K OLED Controls Picture
LG C4 42 OLED Controls Picture
Show Text 

In The Box 
 

In The Box Picture  

Sony 42 A90K OLED In The Box Picture
LG C4 42 OLED In The Box Picture

Power Supply 
 

Internal
Internal
Show Text 
Picture Quality

Contrast 
 

10
10

Checkerboard Picture  

Sony 42 A90K OLED Checkerboard Picture
LG C4 42 OLED Checkerboard Picture

Native Contrast 
 

Inf : 1
Inf : 1

Contrast With Local Dimming 
 

N/A
Inf : 1
Show Text 

Local Dimming 
 

10
10

Local Dimming Video  

Local Dimming 
 

No
No

Backlight 
 

No Backlight
No Backlight
Show Text 

SDR Brightness 
 

6.7
6.4

Real Scene 
 

236 cd/m²
217 cd/m²

Peak 2% Window 
 

307 cd/m²
227 cd/m²

Peak 10% Window 
 

307 cd/m²
229 cd/m²

Peak 25% Window 
 

308 cd/m²
231 cd/m²

Peak 50% Window 
 

214 cd/m²
231 cd/m²

Peak 100% Window 
 

129 cd/m²
208 cd/m²

Sustained 2% Window 
 

297 cd/m²
223 cd/m²

Sustained 10% Window 
 

298 cd/m²
228 cd/m²

Sustained 25% Window 
 

300 cd/m²
230 cd/m²

Sustained 50% Window 
 

212 cd/m²
230 cd/m²

Sustained 100% Window 
 

129 cd/m²
192 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.060
0.007

Minimum Brightness 
 

38 cd/m²
37 cd/m²
Show Text 

HDR Brightness 
 

6.5
7.2

EOTF  

Sony 42 A90K OLED EOTF
LG C4 42 OLED EOTF

VESA DisplayHDR Certification 
 

No Certification
No Certification

Real Scene 
 

407 cd/m²
552 cd/m²

Peak 2% Window 
 

682 cd/m²
738 cd/m²

Peak 10% Window 
 

555 cd/m²
744 cd/m²

Peak 25% Window 
 

392 cd/m²
445 cd/m²

Peak 50% Window 
 

215 cd/m²
269 cd/m²

Peak 100% Window 
 

133 cd/m²
175 cd/m²

Sustained 2% Window 
 

633 cd/m²
726 cd/m²

Sustained 10% Window 
 

532 cd/m²
687 cd/m²

Sustained 25% Window 
 

384 cd/m²
408 cd/m²

Sustained 50% Window 
 

214 cd/m²
268 cd/m²

Sustained 100% Window 
 

132 cd/m²
141 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.098
0.101
Show Text 

Horizontal Viewing Angle 
 

8.5
8.8

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

Sony 42 A90K OLED Horizontal Chroma Graph
LG C4 42 OLED Horizontal Chroma Graph

Color Washout From Left 
 

46°
47°

Color Washout From Right 
 

47°
57°

Horizontal Hue Graph  

Sony 42 A90K OLED Horizontal Hue Graph
LG C4 42 OLED Horizontal Hue Graph

Color Shift From Left 
 

28°
34°

Color Shift From Right 
 

28°
39°

Horizontal Lightness Graph  

Sony 42 A90K OLED Horizontal Lightness Graph
LG C4 42 OLED Horizontal Lightness Graph

Brightness Loss From Left 
 

62°
62°

Brightness Loss From Right 
 

61°
62°

Black Level Raise From Left 
 

70°
70°

Black Level Raise From Right 
 

70°
70°

Gamma Shift From Left 
 

64°
65°

Gamma Shift From Right 
 

62°
65°
Show Text 

Vertical Viewing Angle 
 

8.9
9.1

Vertical Viewing Angle Video  

Vertical Chroma Graph  

Sony 42 A90K OLED Vertical Chroma Graph
LG C4 42 OLED Vertical Chroma Graph

Color Washout From Below 
 

53°
55°

Color Washout From Above 
 

51°
54°

Vertical Hue Graph  

Sony 42 A90K OLED Vertical Hue Graph
LG C4 42 OLED Vertical Hue Graph

Color Shift From Below 
 

28°
35°

Color Shift From Above 
 

27°
35°

Vertical Lightness Graph  

Sony 42 A90K OLED Vertical Lightness Graph
LG C4 42 OLED Vertical Lightness Graph

Brightness Loss From Below 
 

69°
70°

Brightness Loss From Above 
 

68°
69°

Black Level Raise From Below 
 

70°
70°

Black Level Raise From Above 
 

70°
70°

Gamma Shift From Below 
 

69°
68°

Gamma Shift From Above 
 

68°
70°
Show Text 

Gray Uniformity 
 

7.5
8.7

50% Uniformity Picture  

Sony 42 A90K OLED 50% Uniformity Picture
LG C4 42 OLED 50% Uniformity Picture

50% Std. Dev. 
 

4.469%
1.571%

50% DSE 
 

0.149%
0.119%
Show Text 

Black Uniformity 
 

10
10

Native Black Uniformity Picture  

Sony 42 A90K OLED Native Black Uniformity Picture
LG C4 42 OLED Native Black Uniformity Picture

Native Std. Dev. 
 

0.208%
0.161%

Black Uniformity Picture With Local Dimming  

Sony 42 A90K OLED Black Uniformity Picture With Local Dimming
LG C4 42 OLED Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Color Accuracy (Pre-Calibration) 
 

8.1
9.3

Pre Calibration Picture  

Sony 42 A90K OLED Pre Calibration Picture
LG C4 42 OLED Pre Calibration Picture

Pre Gamma Curve Picture  

Sony 42 A90K OLED Pre Gamma Curve Picture
LG C4 42 OLED Pre Gamma Curve Picture

Pre Color Picture  

Sony 42 A90K OLED Pre Color Picture
LG C4 42 OLED Pre Color Picture

Picture Mode 
 

Game
Game Optimizer

sRGB Gamut Area xy 
 

102.6%
99.8%

White Balance dE (Avg.) 
 

4.32
1.47

Color Temperature (Avg.) 
 

6,996 K
6,478 K

Gamma (Avg.) 
 

2.21
2.21

Color dE (Avg.) 
 

2.74
1.11

Contrast Setting 
 

90
85

RGB Settings 
 

Gain (0, 0, 0), Bias (0, 0, 0)
Warm 50

Gamma Setting 
 

0
2.2

Brightness Setting 
 

50
50

Measured Brightness 
 

213 cd/m²
132 cd/m²

Brightness Locked 
 

No
No
Show Text 

Color Accuracy (Post-Calibration) 
 

9.5
9.5

Post Calibration Picture  

Sony 42 A90K OLED Post Calibration Picture
LG C4 42 OLED Post Calibration Picture

Post Gamma Curve Picture  

Sony 42 A90K OLED Post Gamma Curve Picture
LG C4 42 OLED Post Gamma Curve Picture

Post Color Picture  

Sony 42 A90K OLED Post Color Picture
LG C4 42 OLED Post Color Picture

Picture Mode 
 

Game
Game Optimizer

sRGB Gamut Area xy 
 

98.9%
102.6%

White Balance dE (Avg.) 
 

0.67
0.67

Color Temperature (Avg.) 
 

6,533 K
6,524 K

Gamma (Avg.) 
 

2.19
2.18

Color dE (Avg.) 
 

1.21
0.78

Contrast Setting 
 

90
85

RGB Settings 
 

Gain (-2, 0, -5), Bias (2, 1, -3)
High (-1, 1, 1), Low (0, 1, -1)

Gamma Setting 
 

0
2.2

Brightness Setting 
 

10
33

Measured Brightness 
 

101 cd/m²
100 cd/m²

ICC Profile 
 

Show Text 

SDR Color Gamut 
 

9.4
9.6

sRGB Color Gamut Picture  

Sony 42 A90K OLED sRGB Color Gamut Picture
LG C4 42 OLED sRGB Color Gamut Picture

sRGB Coverage xy 
 

98.6%
100.0%

sRGB Picture Mode 
 

Game
Game Optimizer

Adobe RGB Color Gamut Picture  

Sony 42 A90K OLED Adobe RGB Color Gamut Picture
LG C4 42 OLED Adobe RGB Color Gamut Picture

Adobe RGB Coverage xy 
 

87.4%
88.7%

Adobe RGB Picture Mode 
 

Game
Game Optimizer
Show Text 

HDR Color Gamut 
 

9.2
9.2

Wide Color Gamut 
 

Yes
Yes

DCI-P3 Color Gamut Picture  

Sony 42 A90K OLED DCI-P3 Color Gamut Picture
LG C4 42 OLED DCI-P3 Color Gamut Picture

DCI-P3 Coverage xy 
 

97.8%
97.9%

DCI-P3 Picture Mode 
 

Game
Game Optimizer

Rec. 2020 Color Gamut Picture  

Sony 42 A90K OLED Rec. 2020 Color Gamut Picture
LG C4 42 OLED Rec. 2020 Color Gamut Picture

Rec. 2020 Coverage xy 
 

70.6%
70.4%

Rec. 2020 Picture Mode 
 

Game
Game Optimizer
Show Text 

HDR Color Volume 
 

7.6
7.9

DCI-P3 Color Volume ITP Picture  

Sony 42 A90K OLED DCI-P3 Color Volume ITP Picture
LG C4 42 OLED DCI-P3 Color Volume ITP Picture

1,000 cd/m² DCI-P3 Coverage ICtCp 
 

76.9%
76.9%

DCI-P3 Picture Mode 
 

Game
Game Optimizer

Rec. 2020 Color Volume ITP Picture  

Sony 42 A90K OLED Rec. 2020 Color Volume ITP Picture
LG C4 42 OLED Rec. 2020 Color Volume ITP Picture

10,000 cd/m² Rec. 2020 Coverage ICtCp 
 

65.7%
33.7%

Rec. 2020 Picture Mode 
 

Game
Game Optimizer
Show Text 

Text Clarity 
 

7.0
7.0

ClearType On  

Sony 42 A90K OLED ClearType On
LG C4 42 OLED ClearType On

ClearType Off  

Sony 42 A90K OLED ClearType Off
LG C4 42 OLED ClearType Off

Pixel Type 
 

OLED
OLED

Pixels  

Sony 42 A90K OLED Pixels
LG C4 42 OLED Pixels

Subpixel Layout 
 

RWBG
RWBG
Show Text 

Reflections 
 

8.8
9.1

Average Room  

Sony 42 A90K OLED Average Room
LG C4 42 OLED Average Room

Average Room Off Picture  

Sony 42 A90K OLED Average Room Off Picture
LG C4 42 OLED Average Room Off Picture

Bright Room Off Picture  

Sony 42 A90K OLED Bright Room Off Picture
LG C4 42 OLED Bright Room Off Picture

Screen Finish 
 

Semi-Gloss
Glossy

Total Reflections 
 

1.9%
1.4%

Indirect Reflections 
 

0.4%
0.2%

Calculated Direct Reflections 
 

1.6%
1.2%
Show Text 

Gradient 
 

9.4
9.6

Gradient Picture  

Sony 42 A90K OLED Gradient Picture
LG C4 42 OLED Gradient Picture

Color Depth 
 

10 Bit
10 Bit
Show Text 

SDR Color Volume 
 

9.8

sRGB Color Volume ITP Picture  

Sony 42 A90K OLED sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

97.6%

sRGB Picture Mode 
 

Game

Adobe RGB Color Volume ITP Picture  

Sony 42 A90K OLED Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

96.2%

Adobe RGB Picture Mode 
 

Game
Show Text 
Motion

Refresh Rate 
 

8.0
7.4

Native Refresh Rate 
 

120 Hz
120 Hz

Max Refresh Rate 
 

120 Hz
144 Hz

Max Refresh Rate Over DP 
 

N/A
N/A

Max Refresh Rate Over HDMI 
 

120 Hz
144 Hz

Max Refresh Rate Over DP @ 10-bit 
 

N/A
N/A

Max Refresh Rate Over HDMI @ 10-Bit 
 

120 Hz
144 Hz
Show Text 

Variable Refresh Rate (VRR) 
 

Variable Refresh Rate 
 

Yes
Yes

FreeSync 
 

No
Yes

G-SYNC 
 

Compatible (Tested)
Compatible (NVIDIA Certified)

VRR Maximum 
 

120 Hz
144 Hz

VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR Supported Connectors 
 

HDMI
HDMI
Show Text 

VRR Motion Performance 
 

9.8

Pursuit Photo VRR  

LG C4 42 OLED Pursuit Photo VRR

OD Mode CAD Comparison  

See details on graph tool

Recommended VRR OD Setting 
 

No OD Mode

Variable Overdrive Advertised 
 

No

Avg. CAD 
 

19

Best CAD 
 

18

Worst CAD 
 

21
Show Text 

Refresh Rate Compliance 
 

9.6

Fast GTG Sequence  

See details on graph tool

VRR Compliance  

See details on graph tool

Compliance @ Max Hz 
 

94%

Compliance @ 120 FPS 
 

93%

Compliance @ 60 FPS 
 

96%
Show Text 

Response Time @ 60Hz 
 

9.4

Motion Blur Picture  

Sony 42 A90K OLED Motion Blur Picture

Response Time Table  

Sony 42 A90K OLED Response Time Table
LG C4 42 OLED Response Time Table

Recommended Overdrive Setting 
 

No Overdrive
No OD Mode

Rise / Fall Time 
 

0.5 ms
0.4 ms

Total Response Time 
 

6.5 ms
1.2 ms

Overshoot Error 
 

1.3%
1 RGB

Worst 3 Rise / Fall Time 
 

0.7 ms
1.7 ms

Worst 3 Total Response Time 
 

16.6 ms
8.3 ms

Worst 3 Overshoot Error 
 

8.4%
9 RGB
Show Text 

CAD @ Max Refresh Rate 
 

9.9

Pursuit Photo At Max Refresh  

Sony 42 A90K OLED Pursuit Photo At Max Refresh
LG C4 42 OLED Pursuit Photo At Max Refresh

CAD Heatmap At Max Refresh  

Sony 42 A90K OLED CAD Heatmap At Max Refresh
LG C4 42 OLED CAD Heatmap At Max Refresh

OD Transition Max Refresh Rate 
 

od-transition-max-refresh-rate-noodmode-0-31
OD noodmode
0 to 31

Recommended Overdrive Setting 
 

No OD Mode

Avg. CAD 
 

18

Best 10% CAD 
 

6

Worst 10% CAD 
 

49
Show Text 

Response Time @ Max Refresh Rate 
 

First Response Time 
 

0.5 ms
0.3 ms

Total Response Time 
 

2.4 ms
1.3 ms

Recommended Overdrive Setting 
 

No Overdrive
No OD Mode

Motion Blur Picture  

Sony 42 A90K OLED Motion Blur Picture
LG C4 42 OLED Motion Blur Picture

RGB Overshoot 
 

1.1%
3 RGB

Worst 10% RGB Overshoot 
 

7.9%
25 RGB

Worst 10% First Response Time 
 

0.7 ms
0.5 ms

Worst 10% Total Response Time 
 

8.3 ms
6.9 ms

Heatmap First Response  

LG C4 42 OLED Heatmap First Response

Heatmap Total Response  

LG C4 42 OLED Heatmap Total Response

Heatmap RGB Overshoot  

LG C4 42 OLED Heatmap RGB Overshoot

Response Time Table  

Sony 42 A90K OLED Response Time Table
LG C4 42 OLED Response Time Table
Show Text 

CAD @ 120Hz 
 

9.9

Pursuit Photo 120Hz  

Sony 42 A90K OLED Pursuit Photo 120Hz
LG C4 42 OLED Pursuit Photo 120Hz

CAD Heatmap 120Hz  

Sony 42 A90K OLED CAD Heatmap 120Hz
LG C4 42 OLED CAD Heatmap 120Hz

OD Transition 120Hz 
 

od-transition-120-noodmode-0-31
OD noodmode
0 to 31

Recommended Overdrive Setting 
 

No OD Mode

Avg. CAD 
 

16

Best 10% CAD 
 

6

Worst 10% CAD 
 

39
Show Text 

Response Time @ 120Hz 
 

Worst 10% First Response Time 
 

0.7 ms
0.6 ms

RGB Overshoot 
 

1.1%
1 RGB

Total Response Time 
 

2.4 ms
1.4 ms

First Response Time 
 

0.5 ms
0.3 ms

Recommended Overdrive Setting 
 

No Overdrive
No OD Mode

Worst 10% Total Response Time 
 

8.3 ms
8.3 ms

Worst 10% RGB Overshoot 
 

7.9%
10 RGB

120Hz First Response Heatmap  

LG C4 42 OLED 120Hz First Response Heatmap

120Hz Total Response Heatmap  

LG C4 42 OLED 120Hz Total Response Heatmap

120Hz Heatmap RGB Overshoot  

LG C4 42 OLED 120Hz Heatmap RGB Overshoot

Motion Blur Picture  

Sony 42 A90K OLED Motion Blur Picture
LG C4 42 OLED Motion Blur Picture

Response Time Table  

Sony 42 A90K OLED Response Time Table
LG C4 42 OLED Response Time Table
Show Text 

CAD @ 60Hz 
 

9.9

Pursuit Photo 60Hz  

Sony 42 A90K OLED Pursuit Photo 60Hz
LG C4 42 OLED Pursuit Photo 60Hz

CAD Heatmap 60Hz  

LG C4 42 OLED CAD Heatmap 60Hz

OD Transition 60Hz 
 

od-transition-60-noodmode-0-31
OD noodmode
0 to 31

Recommended Overdrive Setting 
 

No OD Mode

Avg. CAD 
 

16

Best 10% CAD 
 

6

Worst 10% CAD 
 

33
Show Text 

Response Time @ 60Hz 
 

Recommended Overdrive Setting 
 

No Overdrive
No OD Mode

First Response Time 
 

0.5 ms
0.4 ms

Total Response Time 
 

6.5 ms
1.2 ms

RGB Overshoot 
 

1.3%
1 RGB

Worst 10% Total Response Time 
 

16.6 ms
8.3 ms

Worst 10% First Response Time 
 

0.7 ms
1.7 ms

Worst 10% RGB Overshoot 
 

8.4%
9 RGB

60Hz First Response Heatmap  

LG C4 42 OLED 60Hz First Response Heatmap

60Hz Total Response Heatmap  

LG C4 42 OLED 60Hz Total Response Heatmap

60Hz RGB Overshoot Heatmap  

LG C4 42 OLED 60Hz RGB Overshoot Heatmap
Show Text 

Backlight Strobing (BFI) 
 

Backlight Strobing Picture  

Sony 42 A90K OLED Backlight Strobing Picture
LG C4 42 OLED Backlight Strobing Picture

Backlight Strobing Frequency Picture  

Sony 42 A90K OLED Backlight Strobing Frequency Picture
LG C4 42 OLED Backlight Strobing Frequency Picture

Backlight Strobing (BFI) 
 

Yes
Yes

Maximum Frequency 
 

60 Hz
60 Hz

Minimum Frequency 
 

60 Hz
60 Hz

Longest Pulse Width Brightness 
 

107 cd/m²
117 cd/m²

Shortest Pulse Width Brightness 
 

107 cd/m²
117 cd/m²

Pulse Width Control 
 

No
No

Pulse Phase Control 
 

No
No

Pulse Amplitude Control 
 

Yes
Yes

VRR At The Same Time 
 

No
No
Show Text 

VRR Flicker 
 

6.2

VRR Flicker Video  

VRR Flicker Graph  

LG C4 42 OLED VRR Flicker Graph

Dark Gray Flicker 
 

3.3 RGB

Middle Gray Flicker 
 

1.4 RGB

Light Gray Flicker 
 

1.2 RGB
Show Text 

Image Flicker 
 

10
10

Backlight Picture  

Sony 42 A90K OLED Backlight Picture
LG C4 42 OLED Backlight Picture

Flicker-Free 
 

No
No

PWM Dimming Frequency 
 

0 Hz
0 Hz
Show Text 
Inputs

Input Lag 
 

7.8
8.5

Native Resolution @ Max Hz 
 

9.2 ms
4.4 ms

Native Resolution @ 120Hz 
 

9.2 ms
5.1 ms

Native Resolution @ 60Hz 
 

17.6 ms
9.6 ms

Backlight Strobing (BFI) 
 

34.2 ms
29.9 ms
Show Text 

Resolution 
 

8.8
7.8

Native Resolution 
 

3840 x 2160
3840 x 2160

Aspect Ratio 
 

16:9
16:9

Megapixels 
 

8.3 MP
8.3 MP

Pixel Density 
 

106 PPI
105 PPI

Measured Screen Diagonal 
 

41.6"

Screen Area 
 

739 in²

PS5 Compatibility 
 

10
10

PS5 Compatibility Photo  

Sony 42 A90K OLED PS5 Compatibility Photo
LG C4 42 OLED PS5 Compatibility Photo

PS5 Compatibility Table  

LG C4 42 OLED PS5 Compatibility Table

4k @ 120Hz 
 

Yes
Yes

4k @ 60Hz 
 

Yes
Yes

1440p @ 120Hz 
 

No
Yes

1440p @ 60Hz 
 

No
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p @ 60Hz 
 

Yes
Yes

HDR 
 

Yes

VRR 
 

Yes
Show Text 

Xbox Series X|S Compatibility 
 

8.3
9.7

XSX Compatibility Photo  

Sony 42 A90K OLED XSX Compatibility Photo
LG C4 42 OLED XSX Compatibility Photo

XSX Compatibility Table  

LG C4 42 OLED XSX Compatibility Table

4k @ 120Hz 
 

Yes
Yes

4k @ 60Hz 
 

Yes
Yes

1440p @ 120Hz 
 

No
Yes

1440p @ 60Hz 
 

No
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p @ 60Hz 
 

Yes
Yes

HDR 
 

Yes

VRR 
 

Yes
Show Text 

Inputs Photos  

Inputs 1  

Sony 42 A90K OLED Inputs 1
LG C4 42 OLED Inputs 1

Inputs 2  

Sony 42 A90K OLED Inputs 2
LG C4 42 OLED Inputs 2
Show Text 

Video And Audio Ports 
 

DisplayPort 
 

No
No

DisplayPort Transmission Bandwidth 
 

No DisplayPort 2.1

Mini DisplayPort 
 

No
No

HDMI 
 

2 (HDMI 2.1), 2 HDMI (2.0)
4 (HDMI 2.1)

HDMI 2.1 Bandwidth 
 

48Gbps (FRL 12x4)
48Gbps (FRL 12x4)

DVI 
 

No
No

VGA 
 

No
No

Daisy Chaining 
 

No
No

3.5mm Audio Out 
 

No
1

HDR10 
 

Yes
Yes

3.5mm Audio In 
 

No
No

3.5mm Microphone In 
 

No
No
Show Text 

USB 
 

USB-A Ports 
 

2
3

USB-A Rated Speed 
 

480Mbps (USB 2.0)
480Mbps (USB 2.0)

USB-B Upstream Port 
 

No
No

USB-C Ports 
 

0
0

USB-C Upstream 
 

No USB-C Ports
No USB-C Ports

USB-C Rated Speed 
 

No USB-C Ports
No USB-C Ports

USB-C Power Delivery 
 

No USB-C Ports
No USB-C Ports

USB-C DisplayPort Alt Mode 
 

No USB-C Ports
No USB-C Ports

Thunderbolt 
 

No
No
Show Text 

macOS Compatibility 
 

macOS Screenshot  

Sony 42 A90K OLED macOS Screenshot
LG C4 42 OLED macOS Screenshot
Show Text 
Features

Additional Features 
 

Speakers 
 

Yes
Yes

RGB Illumination 
 

No
No

Multiple Input Display 
 

No
PBP

KVM Switch 
 

No
No
Show Text 

On-Screen Display (OSD) 
 

OSD Picture  

Sony 42 A90K OLED OSD Picture
LG C4 42 OLED OSD Picture
Show Text 

Check Price

42"
OLED42C4PUA
SEE PRICE
Amazon.com
42"
OLED42C4PUA
Amazon.com
42"
XR-42A90K
B&H
 
42"
XR-42A90K
BestBuy.com
 

Sony 42 A90K OLED

LG C4 42 OLED

Comments

  1. Comparison

Sony 42 A90K OLED vs LG C4 42 OLED: Main Discussion

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    We currently do not have a schedule made for any sharp TVs, so if we do it will not be soon.