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LG CX vs B4 OLED

Which TV Is Better?

    Top
    Main Differences
    Brightness
      HDR BrightnessHDR Brightness In Game ModeSDR Brightness
    Black Level
      ContrastLighting Zone PrecisionLighting Zone TransitionsContrast And Dark Details In Game ModeBlack Uniformity
    Color
      SDR Color VolumeHDR Color VolumeSDR Pre-Calibration Color AccuracySDR Post-Calibration Color AccuracyHDR Pre-Calibration Color AccuracyHDR Post-Calibration Color Accuracy
    Processing
      PQ EOTF TrackingLow-Quality Content SmoothingUpscaling: Sharpness ProcessingHDR Native Gradient
    Game Mode Responsiveness
      Input LagSupported ResolutionsVariable Refresh RateCAD In Game Mode @ Max Refresh RateCAD In Game Mode @ 120HzCAD In Game Mode @ 60HzPS5 CompatibilityXbox Series X|S Compatibility
    Motion Handling
      Stutter24p JudderResponse TimeFlickerBlack Frame Insertion (BFI)Motion Interpolation
    Reflections
      Direct ReflectionsAmbient Black Level RaiseTotal Reflected LightAmbient Color Saturation
    Panel
      Viewing AngleGray UniformityPanel Technology
    Inputs
      Input SpecificationsInput LagAudio PassthroughHDR Format SupportSupported ResolutionsAdvanced Console CompatibilityInput PhotosTotal Inputs
    Design
      StyleAccelerated Longevity TestStandBackBordersThicknessBuild Quality
    Smart Features
      InterfaceAd-FreeApps and FeaturesRemoteTV ControlsIn The BoxMisc
    Sound Quality
      Frequency ResponseDistortion
    Picture Quality
      ContrastSDR BrightnessLocal DimmingLocal Dimming In Game ModeHDR BrightnessHDR Brightness In Game ModeGray UniformityBlack UniformityViewing AngleReflectionsPre CalibrationPost Calibration480p Input720p Input1080p Input4k Input8k InputPixelsColor GamutColor VolumeGradientTemporary Image RetentionPermanent Burn-In Risk
    Motion
      Response TimeFlicker-FreeBlack Frame Insertion (BFI)Motion InterpolationStutter24p JudderVariable Refresh Rate
    Comments

Products

LG CX OLED
LG B4 OLED

Tested using Methodology v1.6

Updated Sep 24, 2025 06:38 PM

SEE PRICE
Amazon.com

Tested using Methodology v2.0.1

Updated Sep 10, 2025 06:38 PM

SEE PRICE
BestBuy.com
LG CX OLED Picture
LG B4 OLED Picture
Resolution4k
Native Refresh Rate
120 Hz
TypeOLED
Sub-Type
WOLED
Dolby Vision
Yes
Screen Finish
Glossy
Resolution4k
Native Refresh Rate
120Hz
TypeOLED
Sub-Type
WOLED
Dolby Vision
Yes
Screen Finish
Glossy

Our Verdict

LG CX OLED

LG B4 OLED

The LG CX OLED is a tad brighter in some HDR scenes, while the newer LG B4 OLED adds a marginal bump to SDR color accuracy, slightly lower input lag, and the latest webOS with more gaming features. Both peak at 4k @ 120Hz and share perfect blacks, Dolby Vision, and similar reflection handling. Overall, the CX still holds up, but if you prefer newer firmware and marginally cleaner low-quality upscaling, go B4—especially if it's cheaper.

0 

Variants

  • OLED48CXPUB (48")
  • OLED55CXPUA (55")
  • OLED65CXPUA (65")
  • OLED77CXPUA (77")
  • OLED48B4AUA (48")
  • OLED55B4AUA (55")
  • OLED65B4AUA (65")
  • OLED77B4AUA (77")
  • OLED83B4AUA (83")

Review

See LG CX OLED Review
See LG B4 OLED Review
4 
178 

Check Price

48"
OLED48CXPUB
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48"
OLED48B4AUA
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55"
OLED55CXPUA
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Amazon.com
55"
OLED55B4AUA
SEE PRICE
BestBuy.com
65"
OLED65CXPUA
SEE PRICE
Amazon.com
65"
OLED65B4AUA
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BestBuy.com
77"
OLED77CXPUA
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77"
OLED77B4AUA
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83"
 
83"
OLED83B4AUA
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LG.com
Read more

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

8.8
8.1

Reflections 
 

9.3
6.3

Full Comparison

Brightness

HDR Brightness 
 

7.1
6.9

HDR Hallway Photo  

LG B4 OLED HDR Hallway Photo

HDR Cityscape Photo  

LG B4 OLED HDR Cityscape Photo

HDR Landscape Photo  

LG B4 OLED HDR Landscape Photo

Hallway Lights (~1950 cd/m²) 
 

647 cd/m²

Yellow Skyscraper (~700 cd/m²) 
 

467 cd/m²

Landscape Pool (~300 cd/m²) 
 

258 cd/m²

Peak 2% Window 
 

760 cd/m²
685 cd/m²

Peak 10% Window 
 

817 cd/m²
675 cd/m²

Peak 25% Window 
 

465 cd/m²
509 cd/m²

Peak 50% Window 
 

311 cd/m²
328 cd/m²

Peak 100% Window 
 

152 cd/m²
147 cd/m²

Sustained 2% Window 
 

720 cd/m²
678 cd/m²

Sustained 10% Window 
 

776 cd/m²
666 cd/m²

Sustained 25% Window 
 

443 cd/m²
501 cd/m²

Sustained 50% Window 
 

293 cd/m²
326 cd/m²

Sustained 100% Window 
 

146 cd/m²
144 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.101
0.094
Show Text 

HDR Brightness In Game Mode 
 

6.7
6.8

HDR Hallway Photo  

LG B4 OLED HDR Hallway Photo

HDR Cityscape Photo  

LG B4 OLED HDR Cityscape Photo

HDR Landscape Photo  

LG B4 OLED HDR Landscape Photo

Hallway Lights (~1950 cd/m²) 
 

631 cd/m²

Yellow Skyscraper (~700 cd/m²) 
 

407 cd/m²

Landscape Pool (~300 cd/m²) 
 

278 cd/m²

Peak 2% Window 
 

749 cd/m²
663 cd/m²

Peak 10% Window 
 

804 cd/m²
665 cd/m²

Peak 25% Window 
 

457 cd/m²
503 cd/m²

Peak 50% Window 
 

320 cd/m²
326 cd/m²

Peak 100% Window 
 

152 cd/m²
147 cd/m²

Sustained 2% Window 
 

633 cd/m²
656 cd/m²

Sustained 10% Window 
 

768 cd/m²
657 cd/m²

Sustained 25% Window 
 

433 cd/m²
497 cd/m²

Sustained 50% Window 
 

302 cd/m²
326 cd/m²

Sustained 100% Window 
 

147 cd/m²
144 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.096
0.093
Show Text 

SDR Brightness 
 

7.0
6.6

Real Scene Peak Brightness 
 

321 cd/m²
398 cd/m²

Peak 2% Window 
 

459 cd/m²
425 cd/m²

Peak 10% Window 
 

456 cd/m²
433 cd/m²

Peak 25% Window 
 

414 cd/m²
426 cd/m²

Peak 50% Window 
 

340 cd/m²
418 cd/m²

Peak 100% Window 
 

176 cd/m²
244 cd/m²

Sustained 2% Window 
 

439 cd/m²
419 cd/m²

Sustained 10% Window 
 

435 cd/m²
429 cd/m²

Sustained 25% Window 
 

395 cd/m²
423 cd/m²

Sustained 50% Window 
 

324 cd/m²
416 cd/m²

Sustained 100% Window 
 

146 cd/m²
242 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.069
0.037
Show Text 
Black Level

Contrast 
 

10
10

Contrast Picture  

LG CX OLED Contrast Picture
LG B4 OLED Contrast Picture

Contrast 
 

N/A
Inf : 1

Native Contrast 
 

Inf : 1
Inf : 1
Show Text 

Lighting Zone Precision 
 

10

Lighting Zone Precision Picture  

LG B4 OLED Lighting Zone Precision Picture
Show Text 

Lighting Zone Transitions 
 

10

Preferred LD Video, Moving Object  

Local Dimming 
 

No
No

Backlight 
 

No Backlight
No Backlight

Dimming Zone Count Of The Tested TV 
 

8,294,400
Show Text 

Contrast And Dark Details In Game Mode 
 

9.5

Lighting Zone Precision Photo In Game Mode  

LG B4 OLED Lighting Zone Precision Photo In Game Mode

Preferred LD Video, Moving Object In Game Mode  

Game Transitions With VRR And Preferred LD  

Show Text 

Black Uniformity 
 

10
10

Black Uniformity Picture With Preferred Local Dimming  

LG CX OLED Black Uniformity Picture With Preferred Local Dimming
LG B4 OLED Black Uniformity Picture With Preferred Local Dimming

Std. Dev. 
 

N/A
N/A

Native Black Uniformity Picture  

LG CX OLED Native Black Uniformity Picture
LG B4 OLED Native Black Uniformity Picture

Native Std. Dev. 
 

0.416%
0.209%
Show Text 
Color

SDR Color Volume 
 

7.9

DCI-P3 Gamut Rings  

LG B4 OLED DCI-P3 Gamut Rings

CIELAB DCI-P3 Coverage 
 

94.07%

BT.2020 Gamut Rings  

LG B4 OLED BT.2020 Gamut Rings

CIELAB BT.2020 Coverage 
 

63.23%
Show Text 

HDR Color Volume 
 

7.1
7.4

P3 Color Volume ITP Picture  

LG CX OLED P3 Color Volume ITP Picture
LG B4 OLED P3 Color Volume ITP Picture

1,000 cd/m² DCI P3 Coverage ITP 
 

44.2%
66.9%

2020 Color Volume ITP Picture  

LG CX OLED 2020 Color Volume ITP Picture
LG B4 OLED 2020 Color Volume ITP Picture

10,000 cd/m² BT.2020 Coverage ITP 
 

33.5%
34.2%

White Luminance 
 

719 cd/m²

Red Luminance 
 

89 cd/m²

Green Luminance 
 

306 cd/m²

Blue Luminance 
 

38 cd/m²

Cyan Luminance 
 

334 cd/m²

Magenta Luminance 
 

115 cd/m²

Yellow Luminance 
 

366 cd/m²
Show Text 

SDR Pre-Calibration Color Accuracy 
 

8.2
9.2

Pre White Balance Picture  

LG CX OLED Pre White Balance Picture
LG B4 OLED Pre White Balance Picture

Pre Gamma Curve Picture  

LG CX OLED Pre Gamma Curve Picture
LG B4 OLED Pre Gamma Curve Picture

Pre Color Picture  

LG CX OLED Pre Color Picture
LG B4 OLED Pre Color Picture

White Balance dE 2000 
 

2.47
1.30

Color dE 2000 
 

1.77
1.20

Gamma 
 

2.19
2.13

Color Temperature 
 

7,034 K
6,550 K

Picture Mode 
 

Expert (Dark Room)
Expert (Dark Space)

Color Temp Setting 
 

Warm 2
Warm 50

Gamma Setting 
 

2.2
2.2
Show Text 

SDR Post-Calibration Color Accuracy 
 

9.6
9.6

Post White Balance Picture  

LG CX OLED Post White Balance Picture
LG B4 OLED Post White Balance Picture

Post Gamma Curve Picture  

LG CX OLED Post Gamma Curve Picture
LG B4 OLED Post Gamma Curve Picture

Post Color Picture  

LG CX OLED Post Color Picture
LG B4 OLED Post Color Picture

White Balance dE 2000 
 

0.16
0.22

Color dE 2000 
 

1.00
1.03

Gamma 
 

2.20
2.20

Color Temperature 
 

6,512 K
6,495 K

White Balance Calibration 
 

22 point
22 point

Color Calibration 
 

Yes
Yes
Show Text 

HDR Pre-Calibration Color Accuracy 
 

9.3

HDR Pre White Balance Picture  

LG B4 OLED HDR Pre White Balance Picture

HDR Pre Color Picture  

LG B4 OLED HDR Pre Color Picture

White Balance dE ITP 
 

2.70

Color dE ITP 
 

5.4

Color Temperature 
 

6,587 K

Picture Mode 
 

Cinema
Show Text 

HDR Post-Calibration Color Accuracy 
 

9.4

HDR Post White Balance Picture  

LG B4 OLED HDR Post White Balance Picture

HDR Post Color Picture  

LG B4 OLED HDR Post Color Picture

White Balance dE ITP 
 

2.29

Color dE ITP 
 

5.00

Color Temperature 
 

6,558 K
Show Text 
Processing

PQ EOTF Tracking 
 

9.6

PQ EOTF Graph  

See details

600 Nit Tracking Delta 
 

0.0012

1000 Nit Tracking Delta 
 

0.0011

4000 Nit Tracking Delta 
 

0.0018
Show Text 

Low-Quality Content Smoothing 
 

7.7

Low-Quality Content Smoothing Picture  

LG B4 OLED Low-Quality Content Smoothing Picture

Smoothing 
 

7.5

Detail Preservation 
 

8.0
Show Text 

Upscaling: Sharpness Processing 
 

8.0
8.0

Sharpness Picture - 480p  

LG CX OLED Sharpness Picture - 480p
LG B4 OLED Sharpness Picture - 480p
Show Text 

HDR Native Gradient 
 

8.7
8.0

HDR Gradient Picture  

LG CX OLED HDR Gradient Picture
LG B4 OLED HDR Gradient Picture

100% Black To 50% Gray  

6.0

50% Gray To 100% White  

10

100% Black To 50% Red  

8.0

50% Red To 100% Red  

10

100% Black To 50% Green  

6.0

50% Green To 100% Green  

8.0

100% Black To 50% Blue  

8.0

50% Blue To 100% Blue  

8.0
Show Text 
Game Mode Responsiveness

Input Lag 
 

9.5
8.8

1080p @ 60Hz 
 

13.6 ms
10.5 ms

1080p @ 60Hz Outside Game Mode 
 

97.0 ms
155.9 ms

1080p @ 120Hz 
 

6.9 ms
5.8 ms

1080p @ Max Refresh Rate 
 

5.8 ms

4k @ 60Hz 
 

13.6 ms
10.6 ms

4k @ 60Hz @ 4:4:4 
 

13.6 ms
10.6 ms

4k @ 60Hz Outside Game Mode 
 

97.0 ms
139.2 ms

4k @ 60Hz With Interpolation 
 

92.9 ms
130.6 ms

4k @ 120Hz 
 

6.7 ms
5.5 ms

4k @ Max Refresh Rate 
 

5.5 ms

8k @ 60Hz 
 

N/A
N/A
Show Text 

Supported Resolutions 
 

9.6
9.1

Resolution  

4k
4k

480p @ 59.94Hz (Widescreen) 
 

Yes

720p @ 59.94Hz 
 

Yes

1080p @ 60Hz @ 4:4:4 
 

Yes
Yes

1080p @ 120Hz 
 

Yes (native support)
Yes

1080p Maximum Refresh Rate 
 

120 Hz

4k @ 60Hz 
 

Yes
Yes

4k @ 60Hz @ 4:4:4 
 

Yes
Yes

4k @ 120Hz 
 

Yes (native support)
Yes

4k @ 120Hz @ 4:4:4 
 

Yes

4k Maximum Refresh Rate 
 

120 Hz

8k @ 30Hz Or 24Hz 
 

No
No

8k @ 60Hz 
 

No
No
Show Text 

Variable Refresh Rate 
 

9.4
7.5

Native Refresh Rate 
 

120 Hz
120Hz

Variable Refresh Rate 
 

Yes
Yes

HDMI Forum VRR 
 

Yes
Yes

FreeSync 
 

Yes
Yes

G-SYNC Compatible 
 

Yes (NVIDIA Certified)
Yes (NVIDIA Certified)

4k VRR Maximum 
 

120 Hz
120 Hz

4k VRR Minimum 
 

< 20 Hz
< 20 Hz

1080p VRR Maximum 
 

120 Hz
120 Hz

1080p VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR + Local Dimming  

No Local Dimming
Show Text 

CAD In Game Mode @ Max Refresh Rate 
 

9.7

Pursuit Photo Max Refresh  

LG B4 OLED Pursuit Photo Max Refresh

CAD Heatmap Max Refresh 
 

LG B4 OLED CAD Heatmap Max Refresh

Transition At Max Refresh 
 

transition-game-max-0-31
0 to 31

Avg. CAD 
 

30

Best 10% CAD 
 

7

Worst 10% CAD 
 

90
Show Text 

CAD In Game Mode @ 120Hz 
 

9.7

Pursuit Photo 120Hz  

LG B4 OLED Pursuit Photo 120Hz

CAD Heatmap 120Hz  

LG B4 OLED CAD Heatmap 120Hz

Transition At 120Hz 
 

transition-game-120-0-31
0 to 31

Avg. CAD 
 

30

Best 10% CAD 
 

7

Worst 10% CAD 
 

90
Show Text 

CAD In Game Mode @ 60Hz 
 

9.7

Pursuit Photo 60Hz  

LG B4 OLED Pursuit Photo 60Hz

CAD Heatmap 60Hz 
 

LG B4 OLED CAD Heatmap 60Hz

Transition 60Hz 
 

transition-game-60-0-31
0 to 31

Avg. CAD 
 

37

Best 10% CAD 
 

7

Worst 10% CAD 
 

110
Show Text 

PS5 Compatibility 
 

PS5 Screenshot  

LG CX OLED PS5 Screenshot
LG B4 OLED PS5 Screenshot

Auto Low Latency Mode (ALLM) 
 

Yes
Yes

4k @ 120Hz 
 

Yes
Yes

1440p @ 120Hz 
 

PS5 can't do 1440p
Yes

1080p @ 120Hz 
 

Yes
Yes

HDR 
 

Yes

VRR 
 

PS5 can't do VRR yet
Yes
Show Text 

Xbox Series X|S Compatibility 
 

Xbox Series X Screenshot  

LG CX OLED Xbox Series X Screenshot
LG B4 OLED Xbox Series X Screenshot

Auto Low Latency Mode (ALLM) 
 

Yes

4k @ 120Hz 
 

Yes
Yes

1440p @ 120Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

HDR 
 

Yes

VRR 
 

Yes
Yes
Show Text 
Motion Handling

Stutter 
 

4.9
4.1

Frame Hold Time @ 24 fps 
 

39.9 ms
41.4 ms

Frame Hold Time @ 60 fps 
 

14.9 ms
16.4 ms
Show Text 

24p Judder 
 

10
10

Judder-Free 24p 
 

Yes
Yes

Judder-Free 24p via 60p 
 

Yes
Yes

Judder-Free 24p via 60i 
 

Yes
Yes

Judder-Free 24p via Native Apps 
 

Yes
Yes
Show Text 

Response Time 
 

9.9
9.6

Pursuit Photo 60Hz  

LG CX OLED Pursuit Photo 60Hz
LG B4 OLED Pursuit Photo 60Hz

Response Time Heatmap 60Hz 
 

LG B4 OLED Response Time Heatmap 60Hz

Transition At 60Hz 
 

transition-60-0-31
0 to 31

First Response Time 
 

0.3 ms

Total Response Time 
 

2.9 ms

Worst 10% Response Time 
 

9.9 ms
Show Text 

Flicker 
 

Backlight chart 
 

LG CX OLED Backlight chart
LG B4 OLED Backlight chart

Flicker-Free 
 

No
No

PWM Dimming Frequency 
 

0 Hz
0 Hz
Show Text 

Black Frame Insertion (BFI) 
 

BFI Picture  

LG CX OLED BFI Picture
LG B4 OLED BFI Picture

BFI Frequency Picture  

LG CX OLED BFI Frequency Picture
LG B4 OLED BFI Frequency Picture

Optional BFI 
 

Yes
Yes

Min Flicker For 60 fps 
 

60 Hz
60 Hz

60Hz For 60 fps 
 

Yes
Yes

120Hz For 120 fps 
 

Yes
No

Min Flicker For 60 fps In Game Mode 
 

60 Hz
60 Hz
Show Text 

Motion Interpolation 
 

Motion Interpolation (30 fps) Picture  

LG CX OLED Motion Interpolation (30 fps) Picture
LG B4 OLED Motion Interpolation (30 fps) Picture

Motion Interpolation (30 fps) 
 

Yes
Yes

Motion Interpolation (60 fps) Picture  

LG CX OLED Motion Interpolation (60 fps) Picture
LG B4 OLED Motion Interpolation (60 fps) Picture

Motion Interpolation (60 fps) 
 

Yes
Yes
Show Text 
Reflections

Direct Reflections 
 

9.3
6.3

Ring Light Picture  

LG B4 OLED Ring Light Picture

Direct Reflections Graph  

See details

Peak Direct Reflection Intensity 
 

46.9%

Screen Finish 
 

Glossy
Glossy
Show Text 

Ambient Black Level Raise 
 

9.3

Black Level Raise Picture  

LG B4 OLED Black Level Raise Picture

Bright Room Black Level Raise Graph  

See details

Black Luminance @ 0 lx 
 

0.00 cd/m²

Black Luminance @ 1000 lx 
 

0.26 cd/m²
Show Text 

Total Reflected Light 
 

8.3

Bright Room Off Picture  

LG CX OLED Bright Room Off Picture
LG B4 OLED Bright Room Off Picture

Ring Picture Total Reflection  

LG B4 OLED Ring Picture Total Reflection

Total Reflected Light Intensity 
 

13,275% ⋅ pixel

Diffraction Artifacts 
 

No
Show Text 

Ambient Color Saturation 
 

7.5

Bright Room Color Volume Graph  

See details

Low-Luminance Colors @ 1000 lx 
 

66.31%

Mid-Luminance Colors @ 1000 lx 
 

60.54%

High-Luminance Colors @ 1000 lx 
 

44.08%
Show Text 
Panel

Viewing Angle 
 

8.4
9.0

Viewing Angle Video  

Chroma Graph  

LG CX OLED Chroma Graph
LG B4 OLED Chroma Graph

Color Washout 
 

48°
52°

Hue Graph  

LG CX OLED Hue Graph
LG B4 OLED Hue Graph

Color Shift 
 

32°
29°

Lightness Graph  

LG CX OLED Lightness Graph
LG B4 OLED Lightness Graph

Brightness Loss 
 

62°
69°

Black Level Raise 
 

70°
70°

Gamma Shift 
 

57°
67°
Show Text 

Gray Uniformity 
 

8.5
8.2

50% Uniformity Picture  

LG CX OLED 50% Uniformity Picture
LG B4 OLED 50% Uniformity Picture

50% Std. Dev. 
 

1.526%
0.738%

50% DSE 
 

0.135%
0.126%

5% Uniformity Picture  

LG CX OLED 5% Uniformity Picture
LG B4 OLED 5% Uniformity Picture

5% Std. Dev. 
 

0.401%
0.470%

5% DSE 
 

0.106%
0.100%
Show Text 

Panel Technology 
 

Spectral Power Distribution  

LG B4 OLED Spectral Power Distribution

Pixels Picture  

LG CX OLED Pixels Picture
LG B4 OLED Pixels Picture

Type  

OLED
OLED

Sub-Type 
 

WOLED
WOLED

Subpixel Layout 
 

RWBG
Show Text 
Inputs

Input Specifications  

Side Inputs Picture  

LG CX OLED Side Inputs Picture
LG B4 OLED Side Inputs Picture

Rear Inputs Picture  

LG CX OLED Rear Inputs Picture
LG B4 OLED Rear Inputs Picture

HDMI  

4
4 (4x HDMI 2.1)

HDMI 2.1 Rated Speed 
 

Yes (HDMI 1,2,3,4)
48 Gbps

ATSC Tuner 
 

1.0

USB Ports  

3
2

HDR10 
 

Yes
Yes

USB 3.0 
 

No
No

Audio Out 3.5mm  

1
0

HDR10+ 
 

No
No

Wi-Fi  

Yes (2.4 GHz, 5 GHz)
Yes (2.4 GHz, 5 GHz)

Ethernet Speed  

1
100 Mbps

Composite In  

1 (incl. adapter)
0

Dolby Vision 
 

Yes
Yes

Digital Optical Audio Out  

1
1

HLG 
 

Yes
Yes

HDMI 2.0 Full Bandwidth 
 

Yes (HDMI 1,2,3,4)

CEC  

Yes

HDCP 2.2  

Yes (HDMI 1,2,3,4)

Variable Analog Audio Out  

Yes
Show Text 

Input Lag 
 

9.5
8.8

1080p @ 60Hz 
 

13.6 ms
10.5 ms

1080p @ 60Hz Outside Game Mode 
 

97.0 ms
155.9 ms

1440p @ 60Hz 
 

13.8 ms

4k @ 60Hz 
 

13.6 ms
10.6 ms

4k @ 60Hz + 10-Bit HDR 
 

13.5 ms

4k @ 60Hz @ 4:4:4 
 

13.6 ms
10.6 ms

4k @ 60Hz Outside Game Mode 
 

97.0 ms
139.2 ms

4k @ 60Hz With Interpolation 
 

92.9 ms
130.6 ms

8k @ 60Hz 
 

N/A
N/A

1080p @ 120Hz 
 

6.9 ms
5.8 ms

1440p @ 120Hz 
 

6.9 ms

4k @ 120Hz 
 

6.7 ms
5.5 ms

1080p with Variable Refresh Rate 
 

5.9 ms

1440p with VRR 
 

6.2 ms

4k with VRR 
 

5.9 ms

8k with VRR 
 

N/A
Show Text 

Audio Passthrough 
 

ARC/eARC Port 
 

Yes
eARC

eARC: Dolby Atmos Over Dolby Digital Plus 
 

Yes
Yes

eARC: Dolby Digital Plus 7.1 
 

Yes

eARC: LPCM 7.1 Over Dolby MAT 
 

Yes

eARC: Dolby TrueHD 7.1 
 

Yes

ARC 
 

Yes (HDMI 2)

eARC: DTS:X Over DTS-HD MA 
 

No
Yes

eARC: DTS-HD Master Audio 7.1 
 

Yes

eARC: LPCM Channels (Bitstream) 
 

7.1

ARC: Dolby Digital 5.1 
 

Yes
Yes

ARC: DTS 5.1 
 

No
Yes

Optical: Dolby Digital 5.1 
 

Yes
Yes

Optical: DTS 5.1 
 

No
Yes
Show Text 

HDR Format Support  

HDR10 
 

Yes
Yes

HDR10+ 
 

No
No

Dolby Vision 
 

Yes
Yes

HLG 
 

Yes
Yes

Supported Resolutions 
 

9.6
9.1

Resolution  

4k
4k

1080p @ 60Hz @ 4:4:4 
 

Yes
Yes

1080p @ 120Hz 
 

Yes (native support)
Yes

1440p @ 60Hz 
 

Yes (forced resolution required)

1440p @ 120Hz 
 

Yes (native support)

4k @ 60Hz 
 

Yes
Yes

4k @ 60Hz @ 4:4:4 
 

Yes
Yes

4k @ 120Hz 
 

Yes (native support)
Yes

8k @ 30Hz or 24Hz 
 

No
No

8k @ 60Hz 
 

No
No
Show Text 

Advanced Console Compatibility 
 

PS5 Screenshot  

LG CX OLED PS5 Screenshot
LG B4 OLED PS5 Screenshot

Xbox Series X Screenshot  

LG CX OLED Xbox Series X Screenshot
LG B4 OLED Xbox Series X Screenshot

Auto Low Latency Mode (ALLM) 
 

Yes
Yes

PS5, 4k @ 120Hz + HDR 
 

Yes

PS5, 4k @ 120Hz 
 

Yes
Yes

PS5, 4k @ 60Hz + HDR 
 

Yes

PS5, 1440p @ 120Hz 
 

PS5 can't do 1440p
Yes

PS5, 1080p @ 120Hz 
 

Yes
Yes

PS5, Variable Refresh Rate 
 

PS5 can't do VRR yet
Yes

Xbox Series X, 4k @ 120Hz + HDR 
 

Yes

Xbox Series X, 4k @ 120Hz 
 

Yes
Yes

Xbox Series X, 4k @ 60Hz + HDR 
 

Yes

Xbox Series X, 1440p @ 120Hz 
 

Yes
Yes

Xbox Series X, 1080p @ 120Hz 
 

Yes
Yes

Xbox Series X, Variable Refresh Rate 
 

Yes
Yes
Show Text 

Input Photos  

Side Inputs Picture  

LG CX OLED Side Inputs Picture
LG B4 OLED Side Inputs Picture

Rear Inputs Picture  

LG CX OLED Rear Inputs Picture
LG B4 OLED Rear Inputs Picture

Total Inputs  

HDMI  

4
4 (4x HDMI 2.1)

USB  

3
2

Digital Optical Audio Out  

1
1

Analog Audio Out 3.5mm  

1
0

Analog Audio Out RCA  

0

Component In  

0

Composite In  

1 (incl. adapter)
0

Tuner (Cable/Ant)  

1

Ethernet  

1
100 Mbps

DisplayPort  

0

IR In  

0

SD/SDHC  

0
Design

Style  

Design Picture  

LG CX OLED Design Picture
LG B4 OLED Design Picture

Curved  

No
No
Show Text 

Accelerated Longevity Test 
 

Uniformity Pictures  

50-gray-30
Month 30
50% Gray

Longevity Graph  

See details

Stand  

Stand Picture  

LG CX OLED Stand Picture
LG B4 OLED Stand Picture
Show Text 

Back  

Back Picture  

LG CX OLED Back Picture
LG B4 OLED Back Picture

Wall Mount  

VESA 300x200
VESA 300x200
Show Text 

Borders  

Borders Picture  

LG CX OLED Borders Picture
LG B4 OLED Borders Picture

Borders  

0.35" (0.9 cm)
0.39" (1.0 cm)

Thickness  

Thickness Picture  

LG CX OLED Thickness Picture
LG B4 OLED Thickness Picture

Max Thickness  

1.93" (4.9 cm)
1.81" (4.6 cm)
Show Text 

Build Quality 
 

9.0
8.5

Build quality picture  

LG CX OLED Build quality picture
LG B4 OLED Build quality picture
Show Text 
Smart Features

Interface 
 

Smart TV Picture  

LG CX OLED Smart TV Picture
LG B4 OLED Smart TV Picture

Smart OS  

webOS
webOS

Version  

5.0
24

Ease of Use 
 

Easy

Smoothness 
 

Average

Time Taken to Select YouTube 
 

2 s

Time Taken to Change Backlight 
 

7 s

Advanced Options 
 

Many
Show Text 

Ad-Free 
 

0.0
0.0

Ads Picture  

LG CX OLED Ads Picture
LG B4 OLED Ads Picture

Ads 
 

Yes
Yes

Opt-out 
 

No
No

Suggested Content in Home 
 

Yes
No

Opt-out of Suggested Content 
 

No
No
Show Text 

Apps and Features 
 

8.0

Apps Picture  

LG CX OLED Apps Picture

App Selection 
 

Great

App Smoothness 
 

Average

Cast Capable 
 

Yes

USB Drive Playback 
 

Yes

USB Drive HDR Playback 
 

Yes

HDR in Netflix 
 

Yes

HDR in YouTube 
 

Yes
Show Text 

Remote  

Remote Picture  

LG CX OLED Remote Picture
LG B4 OLED Remote Picture

Size 
 

Large

Voice Control  

Many Features
Yes

CEC Menu Control 
 

Yes

Other Smart Features 
 

Yes

Remote App  

LG TV Plus
Show Text 

TV Controls  

Controls Picture  

LG CX OLED Controls Picture
LG B4 OLED Controls Picture

Mute Switch 
 

No
Show Text 

In The Box  

In The Box Picture  

LG CX OLED In The Box Picture
LG B4 OLED In The Box Picture
Show Text 

Misc  

Power Consumption  

75 W
72 W

Power Consumption (Max)  

178 W
214 W

Firmware  

03.00.45
03.10.37
Sound Quality

Frequency Response 
 

7.6
7.0

Frequency Response  

See details
See details
 Compare in Graph Tool

Low-Frequency Extension 
 

63.50 Hz
84.76 Hz

Std. Dev. @ 70 
 

2.12 dB
3.82 dB

Std. Dev. @ 80 
 

2.12 dB
3.81 dB

Std. Dev. @ Max 
 

5.18 dB
5.99 dB

Max 
 

91.2 dB SPL
90.1 dB SPL

Dynamic Range Compression 
 

5.62 dB
3.31 dB

Digital Room Correction  

Yes
Show Text 

Distortion 
 

7.0

Total Harmonic Distortion 
 

See details

Weighted THD @ 80 
 

0.085

Weighted THD @ Max 
 

0.519

IMD @ 80 
 

2.00%

IMD @ Max 
 

10.89%
Show Text 
Picture Quality

Contrast 
 

10
10

Checkerboard Picture  

LG CX OLED Checkerboard Picture
LG B4 OLED Checkerboard Picture

Native Contrast 
 

Inf : 1
Inf : 1

Contrast with local dimming 
 

N/A
Inf : 1
Show Text 

SDR Brightness 
 

7.0
6.6

Real Scene Peak Brightness 
 

321 cd/m²
398 cd/m²

Peak 2% Window 
 

459 cd/m²
425 cd/m²

Peak 10% Window 
 

456 cd/m²
433 cd/m²

Peak 25% Window 
 

414 cd/m²
426 cd/m²

Peak 50% Window 
 

340 cd/m²
418 cd/m²

Peak 100% Window 
 

176 cd/m²
244 cd/m²

Sustained 2% Window 
 

439 cd/m²
419 cd/m²

Sustained 10% Window 
 

435 cd/m²
429 cd/m²

Sustained 25% Window 
 

395 cd/m²
423 cd/m²

Sustained 50% Window 
 

324 cd/m²
416 cd/m²

Sustained 100% Window 
 

146 cd/m²
242 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.069
0.037
Show Text 

Local Dimming 
 

10

LD Video, Moving Object  

LD Video, Real Content  

LD Video, Real Content Side View  

Local Dimming 
 

No
No

Backlight 
 

No Backlight
No Backlight
Show Text 

Local Dimming In Game Mode 
 

10

LD Video, Moving Object  

LD Video, Real Content  

LD Video, Real Content Side View  

Local Dimming 
 

No

Backlight 
 

No Backlight
Show Text 

HDR Brightness 
 

7.1
6.9

EOTF  

LG CX OLED EOTF

Real Scene Highlight 
 

681 cd/m²

Peak 2% Window 
 

760 cd/m²
685 cd/m²

Peak 10% Window 
 

817 cd/m²
675 cd/m²

Peak 25% Window 
 

465 cd/m²
509 cd/m²

Peak 50% Window 
 

311 cd/m²
328 cd/m²

Peak 100% Window 
 

152 cd/m²
147 cd/m²

Sustained 2% Window 
 

720 cd/m²
678 cd/m²

Sustained 10% Window 
 

776 cd/m²
666 cd/m²

Sustained 25% Window 
 

443 cd/m²
501 cd/m²

Sustained 50% Window 
 

293 cd/m²
326 cd/m²

Sustained 100% Window 
 

146 cd/m²
144 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.101
0.094
Show Text 

HDR Brightness In Game Mode 
 

6.7
6.8

Game Mode EOTF  

LG CX OLED Game Mode EOTF

Real Scene Highlight 
 

563 cd/m²

Peak 2% Window 
 

749 cd/m²
663 cd/m²

Peak 10% Window 
 

804 cd/m²
665 cd/m²

Peak 25% Window 
 

457 cd/m²
503 cd/m²

Peak 50% Window 
 

320 cd/m²
326 cd/m²

Peak 100% Window 
 

152 cd/m²
147 cd/m²

Sustained 2% Window 
 

633 cd/m²
656 cd/m²

Sustained 10% Window 
 

768 cd/m²
657 cd/m²

Sustained 25% Window 
 

433 cd/m²
497 cd/m²

Sustained 50% Window 
 

302 cd/m²
326 cd/m²

Sustained 100% Window 
 

147 cd/m²
144 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.096
0.093
Show Text 

Gray Uniformity 
 

8.5
8.2

50% Uniformity Picture  

LG CX OLED 50% Uniformity Picture
LG B4 OLED 50% Uniformity Picture

50% Std. Dev. 
 

1.526%
0.738%

50% DSE 
 

0.135%
0.126%

5% Uniformity Picture  

LG CX OLED 5% Uniformity Picture
LG B4 OLED 5% Uniformity Picture

5% Std. Dev. 
 

0.401%
0.470%

5% DSE 
 

0.106%
0.100%
Show Text 

Black Uniformity 
 

10
10

Native Black Uniformity Picture  

LG CX OLED Native Black Uniformity Picture
LG B4 OLED Native Black Uniformity Picture

Native Std. Dev. 
 

0.416%
0.209%

Black Uniformity Picture with Local Dimming  

LG CX OLED Black Uniformity Picture with Local Dimming
LG B4 OLED Black Uniformity Picture with Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Viewing Angle 
 

8.4
9.0

Viewing Angle Video  

Chroma Graph  

LG CX OLED Chroma Graph
LG B4 OLED Chroma Graph

Color Washout 
 

48°
52°

Hue Graph  

LG CX OLED Hue Graph
LG B4 OLED Hue Graph

Color Shift 
 

32°
29°

Lightness Graph  

LG CX OLED Lightness Graph
LG B4 OLED Lightness Graph

Brightness Loss 
 

62°
69°

Black Level Raise 
 

70°
70°

Gamma Shift 
 

57°
67°
Show Text 

Reflections 
 

9.3
6.3

Reflections Picture  

LG CX OLED Reflections Picture

Average Room Off Picture  

LG CX OLED Average Room Off Picture

Bright Room Off Picture  

LG CX OLED Bright Room Off Picture
LG B4 OLED Bright Room Off Picture

Screen Finish 
 

Glossy
Glossy

Total Reflections 
 

1.5%

Indirect Reflections 
 

0.4%

Calculated Direct Reflections 
 

1.1%
Show Text 

Pre Calibration 
 

8.2
9.2

Pre White Balance Picture  

LG CX OLED Pre White Balance Picture
LG B4 OLED Pre White Balance Picture

Pre Gamma Curve Picture  

LG CX OLED Pre Gamma Curve Picture
LG B4 OLED Pre Gamma Curve Picture

Pre Color Picture  

LG CX OLED Pre Color Picture
LG B4 OLED Pre Color Picture

White Balance dE 
 

2.47
1.30

Color dE 
 

1.77
1.20

Gamma 
 

2.19
2.13

Color Temperature 
 

7,034 K
6,550 K

Picture Mode 
 

Expert (Dark Room)
Expert (Dark Space)

Color Temp Setting 
 

Warm 2
Warm 50

Gamma Setting 
 

2.2
2.2
Show Text 

Post Calibration 
 

9.6
9.6

Post White Balance Picture  

LG CX OLED Post White Balance Picture
LG B4 OLED Post White Balance Picture

Post Gamma Curve Picture  

LG CX OLED Post Gamma Curve Picture
LG B4 OLED Post Gamma Curve Picture

Post Color Picture  

LG CX OLED Post Color Picture
LG B4 OLED Post Color Picture

White Balance dE 
 

0.16
0.22

Color dE 
 

1.00
1.03

Gamma 
 

2.20
2.20

Color Temperature 
 

6,512 K
6,495 K

White Balance Calibration 
 

22 point
22 point

Color Calibration 
 

Yes
Yes
Show Text 

480p Input 
 

8.0
8.0

480p Picture  

LG CX OLED 480p Picture
LG B4 OLED 480p Picture
Show Text 

720p Input 
 

8.0

720p Picture  

LG CX OLED 720p Picture
Show Text 

1080p Input 
 

9.0

1080p Picture  

LG CX OLED 1080p Picture
Show Text 

4k Input 
 

10

4k Picture  

LG CX OLED 4k Picture
Show Text 

8k Input 
 

0.0

8k Picture  

LG CX OLED 8k Picture
Show Text 

Pixels 
 

Pixels Picture  

LG CX OLED Pixels Picture
LG B4 OLED Pixels Picture

Type  

OLED
OLED

Sub-Type 
 

WOLED
WOLED
Show Text 

Color Gamut 
 

8.6

Wide Color Gamut 
 

Yes

Color Gamut DCI-P3 Picture  

LG CX OLED Color Gamut DCI-P3 Picture

DCI P3 xy 
 

97.32%

DCI P3 uv 
 

98.71%

Color Gamut Rec.2020 Picture  

LG CX OLED Color Gamut Rec.2020 Picture

Rec 2020 xy 
 

71.67%

Rec 2020 uv 
 

75.65%
Show Text 

Color Volume 
 

7.1
7.4

P3 Color Volume ITP Picture  

LG CX OLED P3 Color Volume ITP Picture
LG B4 OLED P3 Color Volume ITP Picture

Normalized DCI P3 Coverage ITP 
 

80.6%

10,000 cd/m² DCI P3 Coverage ITP 
 

44.2%
66.9%

2020 Color Volume ITP Picture  

LG CX OLED 2020 Color Volume ITP Picture
LG B4 OLED 2020 Color Volume ITP Picture

Normalized Rec 2020 Coverage ITP 
 

61.0%

10,000 cd/m² Rec 2020 Coverage ITP 
 

33.5%
34.2%
Show Text 

Gradient 
 

8.7
8.0

Gradient Picture  

LG CX OLED Gradient Picture
LG B4 OLED Gradient Picture

Color Depth 
 

10 Bit

Red (Std. Dev.) 
 

0.083

Green (Std. Dev.) 
 

0.105

Blue (Std. Dev.) 
 

0.092

Gray (Std. Dev.) 
 

0.081
Show Text 

Temporary Image Retention 
 

10

Image Retention Picture  

LG CX OLED Image Retention Picture

IR after 0 min recovery 
 

0.00%

IR after 2 min recovery 
 

0.00%

IR after 4 min recovery 
 

0.00%

IR after 6 min recovery 
 

0.00%

IR after 8 min recovery 
 

0.00%

IR after 10 min recovery 
 

0.00%
Show Text 

Permanent Burn-In Risk 
 

2.0

Permanent Burn-In Risk 
 

Yes
Show Text 
Motion

Response Time 
 

9.9
9.6

Motion Blur Picture  

LG CX OLED Motion Blur Picture
LG B4 OLED Motion Blur Picture

Response Time Chart  

LG CX OLED Response Time Chart

80% Response Time 
 

0.3 ms

100% Response Time 
 

1.7 ms
Show Text 

Flicker-Free 
 

10
0.0

Backlight chart 
 

LG CX OLED Backlight chart
LG B4 OLED Backlight chart

Flicker-Free 
 

No
No

PWM Dimming Frequency 
 

0 Hz
0 Hz
Show Text 

Black Frame Insertion (BFI) 
 

10
0.0

BFI Picture  

LG CX OLED BFI Picture
LG B4 OLED BFI Picture

BFI Frequency Picture  

LG CX OLED BFI Frequency Picture
LG B4 OLED BFI Frequency Picture

Optional BFI 
 

Yes
Yes

Min Flicker For 60 fps 
 

60 Hz
60 Hz

60Hz For 60 fps 
 

Yes
Yes

120Hz For 120 fps 
 

Yes
No

Min Flicker for 60 fps in Game Mode 
 

60 Hz
60 Hz
Show Text 

Motion Interpolation 
 

Motion Interpolation (30 fps) Picture  

LG CX OLED Motion Interpolation (30 fps) Picture
LG B4 OLED Motion Interpolation (30 fps) Picture

Motion Interpolation (30 fps) 
 

Yes
Yes

Motion Interpolation (60 fps) Picture  

LG CX OLED Motion Interpolation (60 fps) Picture
LG B4 OLED Motion Interpolation (60 fps) Picture

Motion Interpolation (60 fps) 
 

Yes
Yes
Show Text 

Stutter 
 

4.9
4.1

Frame Hold Time @ 24 fps 
 

39.9 ms
41.4 ms

Frame Hold Time @ 60 fps 
 

14.9 ms
16.4 ms
Show Text 

24p Judder 
 

10
10

Judder-Free 24p 
 

Yes
Yes

Judder-Free 24p via 60p 
 

Yes
Yes

Judder-Free 24p via 60i 
 

Yes
Yes

Judder-Free 24p via Native Apps 
 

Yes
Yes
Show Text 

Variable Refresh Rate 
 

9.4
7.5

Native Refresh Rate 
 

120 Hz
120Hz

Variable Refresh Rate 
 

Yes
Yes

HDMI Forum VRR 
 

Yes
Yes

FreeSync 
 

Yes
Yes

G-SYNC Compatible 
 

Yes (NVIDIA Certified)
Yes (NVIDIA Certified)

4k VRR Maximum 
 

120 Hz
120 Hz

4k VRR Minimum 
 

< 20 Hz
< 20 Hz

1080p VRR Maximum 
 

120 Hz
120 Hz

1080p VRR Minimum 
 

< 20 Hz
< 20 Hz

1440p VRR Maximum 
 

120 Hz

1440p VRR Minimum 
 

< 20 Hz

VRR Supported Connectors 
 

HDMI
Show Text 

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LG CX OLED

LG B4 OLED

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  1. Comparison
 • Posted 4 months ago

LG CX OLED vs LG B4 OLED: Main Discussion

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