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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Sound Quality
- Smart Features
- Comments
LG B4 OLED vs Samsung S90D/S90DD OLED (QD-OLED)
Side-by-Side Comparison
Products
LG B4 OLED
Samsung S90D/S90DD OLED (QD-OLED)
Tested using Methodology v1.11
Updated Mar 12, 2025 05:47 PM
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Amazon.comTested using Methodology v1.11
Updated Mar 11, 2025 06:00 PM
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Amazon.com
Resolution4k
TypeOLED
Sub-TypeWOLED
Resolution4k
TypeOLED
Sub-TypeQD-OLED
Variants
- OLED48B4PUA (48")
- OLED55B4PUA (55")
- OLED65B4PUA (65")
- OLED77B4PUA (77")
- OLED83B4PUA (83")
- QN42S90DAEXZA (42" (WOLED))
- QN48S90DAEXZA (48" (WOLED))
- QN55S90DAFXZA (55" (QD-OLED))
- QN65S90DAFXZA (65" (QD-OLED))
- QN77S90DAFXZA (77" (QD-OLED))
- QN83S90DAEXZA (83" (WOLED))
Our Verdict
LG B4 OLED
Samsung S90D/S90DD OLED (QD-OLED)
The Samsung S90D/S90DD OLED is better than the LG B4 OLED. They both look amazing in dark rooms due to their nearly perfect contrast, but the Samsung is noticeably brighter in HDR. The Samsung also has a much wider color gamut, giving it a more impactful HDR viewing experience. Regarding image processing, the Samsung model has much less banding in its HDR color gradients. Still, the LG has slightly better low-quality content smoothing, so streaming content looks a bit cleaner overall. The LG model supports Dolby Vision, while the Samsung instead supports the less widely used HDR10+ format. Finally, the Samsung is superior for PC gamers due to its four 4k @ 144Hz HDMI ports, while the LG is limited to 120Hz on its four ports.
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42" (WOLED)
42" (WOLED)
QN42S90DAEXZA
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OLED48B4PUA
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48" (WOLED)
48" (WOLED)
QN48S90DAEXZA
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OLED55B4PUA
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55" (QD-OLED)
55" (QD-OLED)
QN55S90DAFXZA
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OLED65B4PUA
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65" (QD-OLED)
65" (QD-OLED)
QN65S90DAFXZA
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OLED77B4PUA
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77" (QD-OLED)
77" (QD-OLED)
QN77S90DAFXZA
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OLED83B4PUA
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83" (WOLED)
83" (WOLED)
QN83S90DAEXZA
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Threshold
Mixed Usage
8.9
9.0
HDR Native Gradient
8.0
9.8
Full Comparison
Design
Style
Design Picture
Curved
No
No
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Stand
Stand Picture
Back
Back Picture
Wall Mount
VESA 300x200
VESA 300x200
Borders
Borders Picture
Borders
0.39" (1.0 cm)
0.28" (0.7 cm)
Thickness
Thickness Picture
Max Thickness
1.81" (4.6 cm)
1.61" (4.1 cm)
Build Quality
8.5
7.5
Build quality picture
Picture Quality
Contrast
10
10
Contrast Picture
Contrast
Inf : 1
Inf : 1
Native Contrast
Inf : 1
Inf : 1
Blooming
10
10
Blooming Photo
Lighting Zone Transitions
10
10
Preferred LD Video, Moving Object
Local Dimming
No
No
Backlight
No Backlight
No Backlight
Dimming Zones Count Of Tested TV
8,294,400
8,294,400
Contrast And Dark Details In Game Mode
9.5
9.5
Blooming Photo In Game Mode
Preferred LD Video, Moving Object In Game Mode
Game Transitions With VRR And Preferred LD
HDR Brightness
7.7
8.7
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
647 cd/m²
1,045 cd/m²
Yellow Skyscraper (~700 cd/m²)
467 cd/m²
755 cd/m²
Landscape Pool (~300 cd/m²)
258 cd/m²
319 cd/m²
Peak 2% Window
685 cd/m²
1,199 cd/m²
Peak 10% Window
675 cd/m²
1,193 cd/m²
Peak 25% Window
509 cd/m²
640 cd/m²
Peak 50% Window
328 cd/m²
334 cd/m²
Peak 100% Window
147 cd/m²
214 cd/m²
Sustained 2% Window
678 cd/m²
1,192 cd/m²
Sustained 10% Window
666 cd/m²
948 cd/m²
Sustained 25% Window
501 cd/m²
614 cd/m²
Sustained 50% Window
326 cd/m²
329 cd/m²
Sustained 100% Window
144 cd/m²
211 cd/m²
Automatic Brightness Limiting (ABL)
0.094
0.101
HDR Brightness In Game Mode
7.6
8.6
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
631 cd/m²
973 cd/m²
Yellow Skyscraper (~700 cd/m²)
407 cd/m²
822 cd/m²
Landscape Pool (~300 cd/m²)
278 cd/m²
392 cd/m²
Peak 2% Window
663 cd/m²
1,193 cd/m²
Peak 10% Window
665 cd/m²
1,190 cd/m²
Peak 25% Window
503 cd/m²
641 cd/m²
Peak 50% Window
326 cd/m²
335 cd/m²
Peak 100% Window
147 cd/m²
216 cd/m²
Sustained 2% Window
656 cd/m²
1,187 cd/m²
Sustained 10% Window
657 cd/m²
795 cd/m²
Sustained 25% Window
497 cd/m²
584 cd/m²
Sustained 50% Window
326 cd/m²
330 cd/m²
Sustained 100% Window
144 cd/m²
213 cd/m²
Automatic Brightness Limiting (ABL)
0.093
0.097
PQ EOTF Tracking
9.8
9.1
PQ EOTF Graph
600 Nit Tracking Delta
0.0012
0.0057
1000 Nit Tracking Delta
0.0011
0.0058
4000 Nit Tracking Delta
0.0018
0.0049
SDR Brightness
7.7
7.6
Real Scene Peak Brightness
398 cd/m²
381 cd/m²
Peak 2% Window
425 cd/m²
496 cd/m²
Peak 10% Window
433 cd/m²
493 cd/m²
Peak 25% Window
426 cd/m²
497 cd/m²
Peak 50% Window
418 cd/m²
316 cd/m²
Peak 100% Window
244 cd/m²
209 cd/m²
Sustained 2% Window
419 cd/m²
487 cd/m²
Sustained 10% Window
429 cd/m²
486 cd/m²
Sustained 25% Window
423 cd/m²
487 cd/m²
Sustained 50% Window
416 cd/m²
313 cd/m²
Sustained 100% Window
242 cd/m²
206 cd/m²
Automatic Brightness Limiting (ABL)
0.037
0.057
Color Gamut
8.7
9.4
Wide Color Gamut
Yes
Yes
Color Gamut DCI-P3 Picture
DCI P3 xy
98.29%
100.00%
DCI P3 uv
99.50%
99.99%
Color Gamut Rec.2020 Picture
Rec 2020 xy
72.27%
85.84%
Rec 2020 uv
76.75%
90.99%
Color Volume
7.9
9.2
P3 Color Volume ITP Picture
1,000 cd/m² DCI P3 Coverage ITP
66.9%
99.4%
2020 Color Volume ITP Picture
10,000 cd/m² Rec 2020 Coverage ITP
34.2%
55.2%
White Luminance
719 cd/m²
1,197 cd/m²
Red Luminance
89 cd/m²
281 cd/m²
Green Luminance
306 cd/m²
856 cd/m²
Blue Luminance
38 cd/m²
62 cd/m²
Cyan Luminance
334 cd/m²
919 cd/m²
Magenta Luminance
115 cd/m²
342 cd/m²
Yellow Luminance
366 cd/m²
1,133 cd/m²
Pre Calibration
9.1
8.5
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE
1.30
2.17
Color dE
1.20
1.44
Gamma
2.13
2.12
Color Temperature
6,550 K
6,892 K
Picture Mode
Expert (Dark Space)
Movie
Color Temp Setting
Warm 50
Warm 2
Gamma Setting
2.2
2.2
Post Calibration
9.5
9.6
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE
0.22
0.20
Color dE
1.03
0.88
Gamma
2.20
2.19
Color Temperature
6,495 K
6,532 K
White Balance Calibration
22 point
20 point
Color Calibration
Yes
Yes
Gray Uniformity
8.8
8.9
50% Uniformity Picture
50% Std. Dev.
0.738%
1.468%
50% DSE
0.126%
0.103%
5% Uniformity Picture
5% Std. Dev.
0.470%
0.417%
5% DSE
0.100%
0.098%
Black Uniformity
10
10
Black Uniformity Picture With Preferred Local Dimming
Std. Dev.
N/A
N/A
Native Black Uniformity Picture
Native Std. Dev.
0.209%
0.155%
Viewing Angle
8.9
10
Viewing Angle Video
Chroma Graph
Color Washout
52°
70°
Hue Graph
Color Shift
29°
70°
Lightness Graph
Brightness Loss
69°
70°
Black Level Raise
70°
70°
Gamma Shift
67°
70°
Reflections
9.1
9.5
Reflections Picture
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Glossy
Glossy
Total Reflections
1.7%
0.9%
Indirect Reflections
0.1%
0.6%
Calculated Direct Reflections
1.6%
0.3%
HDR Native Gradient
8.0
9.8
HDR Gradient Picture
100% Black to 50% Gray
6.0
10
50% Gray to 100% White
10
10
100% Black to 50% Red
8.0
10
50% Red to 100% Red
10
10
100% Black to 50% Green
6.0
8.0
50% Green to 100% Green
8.0
10
100% Black to 50% Blue
8.0
10
50% Blue to 100% Blue
8.0
10
Low-Quality Content Smoothing
7.7
7.3
Low-Quality Content Smoothing Picture
Smoothing
7.5
7.0
Detail Preservation
8.0
8.0
Upscaling: Sharpness Processing
8.0
8.0
Sharpness Picture - 480p
Pixels
Pixels Picture
Subpixel Layout
RWBG
Triangular RGB
Type
OLED
OLED
Sub-Type
WOLED
QD-OLED
Motion
Response Time
9.9
9.9
Motion Blur Picture
Response Time Chart
80% Response Time
0.2 ms
0.2 ms
100% Response Time
2.3 ms
1.5 ms
Flicker-Free
10
10
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
0 Hz
0 Hz
Black Frame Insertion (BFI)
BFI Picture
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
No
No
Min Flicker for 60 fps in Game Mode
60 Hz
60 Hz
Motion Interpolation
Motion Interpolation (30 fps) Picture
Motion Interpolation (30 fps)
Yes
Yes
Motion Interpolation (60 fps) Picture
Motion Interpolation (60 fps)
Yes
Yes
Stutter
5.0
4.8
Frame Hold Time @ 24 fps
39.4 ms
40.2 ms
Frame Hold Time @ 60 fps
14.4 ms
15.2 ms
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
Variable Refresh Rate
9.4
9.5
Native Refresh Rate
120 Hz
144 Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Yes
Yes
FreeSync
Yes
Yes
G-SYNC Compatible
Yes (NVIDIA Certified)
Yes
4k VRR Maximum
120 Hz
144 Hz
4k VRR Minimum
< 20 Hz
< 20 Hz
1080p VRR Maximum
120 Hz
144 Hz
1080p VRR Minimum
< 20 Hz
< 20 Hz
1440p VRR Maximum
120 Hz
120 Hz
1440p VRR Minimum
< 20 Hz
< 20 Hz
VRR + Local Dimming
No Local Dimming
No Local Dimming
Inputs
Input Lag
9.7
9.7
1080p @ 60Hz
10.5 ms
10.1 ms
1080p @ 60Hz Outside Game Mode
155.9 ms
83.8 ms
1080p @ 120Hz
5.8 ms
5.4 ms
1080p @ 144Hz
N/A
4.7 ms
1440p @ 60Hz
10.8 ms
10.1 ms
1440p @ 120Hz
5.7 ms
5.3 ms
1440p @ 144Hz
N/A
N/A
4k @ 60Hz
10.6 ms
10.1 ms
4k @ 60Hz + 10-Bit HDR
10.6 ms
10.0 ms
4k @ 60Hz @ 4:4:4
10.6 ms
10.1 ms
4k @ 60Hz Outside Game Mode
139.2 ms
67.4 ms
4k @ 60Hz With Interpolation
130.6 ms
19.7 ms
4k @ 120Hz
5.5 ms
5.4 ms
4k @ 144Hz
N/A
4.8 ms
8k @ 60Hz
N/A
N/A
Supported Resolutions
9.6
9.6
Resolution
4k
4k
480p @ 59.94Hz (Widescreen)
Yes
Yes
720p @ 59.94Hz
Yes
Yes
1080p @ 60Hz @ 4:4:4
Yes
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 144Hz
No
Yes
1440p @ 60Hz
Yes (forced resolution required)
Yes
1440p @ 120Hz
Yes
Yes
1440p @ 144Hz
No
No
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
Yes
Yes
4k @ 120Hz @ 4:4:4
Yes
Yes
4k @ 144Hz
No
Yes
8k @ 30Hz or 24Hz
No
No
8k @ 60Hz
No
No
PS5 Compatibility
PS5 Screenshot
Auto Low Latency Mode (ALLM)
Yes
Yes
4k @ 120Hz
Yes
Yes
1440p @ 120Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
HDR
Yes
Yes
VRR
Yes
Yes
Xbox Series X|S Compatibility
Xbox Series X Screenshot
Auto Low Latency Mode (ALLM)
Yes
Yes
4k @ 120Hz
Yes
Yes
1440p @ 120Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
HDR
Yes
Yes
VRR
Yes
Yes
Inputs Specifications
HDR10
Yes
Yes
HDR10+
No
Yes
Dolby Vision
Yes
No
HLG
Yes
Yes
HDMI 2.0 Full Bandwidth
Yes (HDMI 1,2,3,4)
Yes (HDMI 1,2,3,4)
HDMI 2.1 Class Bandwidth
Yes (HDMI 1,2,3,4)
Yes (HDMI 1,2,3,4)
CEC
Yes
Yes
HDCP 2.2
Yes (HDMI 1,2,3,4)
Yes (HDMI 1,2,3,4)
ATSC Tuner
1.0
1.0
USB 3.0
No
No
Variable Analog Audio Out
No
Yes
Wi-Fi Support
Yes (2.4 GHz, 5 GHz)
Yes (2.4 GHz, 5 GHz)
Input Photos
Side Inputs Picture
Rear Inputs Picture
Total Inputs
HDMI
4
4
USB
2
2
Digital Optical Audio Out
1
1
Analog Audio Out 3.5mm
0
1
Analog Audio Out RCA
0
0
Component In
0
0
Composite In
0
0
Tuner (Cable/Ant)
1
1
Ethernet
1
1
DisplayPort
0
0
IR In
0
0
Audio Passthrough
ARC/eARC Port
eARC
eARC
eARC: Dolby Atmos Over Dolby Digital Plus
Yes
Yes
eARC: Dolby Digital Plus 7.1
Yes
Yes
eARC: LPCM 7.1 Over Dolby MAT
Yes
Yes
eARC: Dolby TrueHD 7.1
Yes
Yes
eARC: DTS:X Over DTS-HD MA
Yes
No
eARC: DTS-HD Master Audio 7.1
Yes
No
eARC: LPCM Channels (Bitstream)
7.1
7.1
ARC: Dolby Digital 5.1
Yes
Yes
ARC: DTS 5.1
Yes
No
Optical: Dolby Digital 5.1
Yes
Yes
Optical: DTS 5.1
Yes
No
Sound Quality
Frequency Response
7.0
7.4
Frequency Response
Low-Frequency Extension
84.76 Hz
71.27 Hz
Std. Dev. @ 70
3.82 dB
2.82 dB
Std. Dev. @ 80
3.81 dB
2.93 dB
Std. Dev. @ Max
5.99 dB
4.86 dB
Max
90.1 dB SPL
88.1 dB SPL
Dynamic Range Compression
3.31 dB
4.08 dB
Distortion
6.7
7.4
Total Harmonic Distortion
Weighted THD @ 80
0.192
0.143
Weighted THD @ Max
0.570
0.292
IMD @ 80
3.53%
1.83%
IMD @ Max
14.67%
4.38%
Smart Features
Interface
8.5
8.5
Smart TV Picture
Smart OS
webOS
Tizen
Version
24
2024
Ease of Use
Easy
Easy
Smoothness
Average
Very Smooth
Time Taken to Select YouTube
2 s
3 s
Time Taken to Change Backlight
3 s
3 s
Advanced Options
Many
Many
Ad-Free
0.0
0.0
Ads Picture
Ads
Yes
Yes
Opt-out
No
No
Suggested Content in Home
No
Yes
Opt-out of Suggested Content
No
No
Apps and Features
8.0
8.5
Apps Picture
App Selection
Great
Great
App Smoothness
Average
Average
Cast Capable
Yes
Yes
USB Drive Playback
Yes
Yes
USB Drive HDR Playback
Yes
Yes
HDR in Netflix
Yes
Yes
HDR in YouTube
Yes
Yes
Remote
9.0
8.5
Remote Picture
Size
Large
Small
Voice Control
Many Features
Many Features
CEC Menu Control
Yes
Yes
Other Smart Features
Yes
Yes
Remote App
LG ThinQ
Samsung SmartThings
TV Controls
Controls Picture
In The Box
In The Box Picture
Misc
Power Consumption
72 W
102 W
Power Consumption (Max)
214 W
231 W
Firmware
03.10.37
1059
Check Price
42" (WOLED)
42" (WOLED)
QN42S90DAEXZA
Searching
Finding store48"
OLED48B4PUA
Searching
Finding store48"
48" (WOLED)
48" (WOLED)
QN48S90DAEXZA
Searching
Finding store55"
OLED55B4PUA
Searching
Finding store55"
55" (QD-OLED)
55" (QD-OLED)
QN55S90DAFXZA
Searching
Finding store65"
OLED65B4PUA
Searching
Finding store65"
65" (QD-OLED)
65" (QD-OLED)
QN65S90DAFXZA
Searching
Finding store77"
OLED77B4PUA
Searching
Finding store77"
77" (QD-OLED)
77" (QD-OLED)
QN77S90DAFXZA
Searching
Finding store83"
OLED83B4PUA
Searching
Finding store83"
83" (WOLED)
83" (WOLED)
QN83S90DAEXZA
Searching
Finding store
LG B4 OLED
Samsung S90D/S90DD OLED (QD-OLED)
Comments
LG B4 OLED vs Samsung S90D/S90DD OLED (QD-OLED): Main Discussion
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