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- Table of Contents
- Top
- Main Differences
- Brightness
- Black Level
- Color
- Processing
- Game Mode Responsiveness
- Motion Handling
- Reflections
- Panel
- Inputs
- Design
- Smart Features
- Sound Quality
- Comments
LG B4 OLED vs Samsung S90D OLED
Side-by-Side Comparison
Products
LG B4 OLED
Samsung S90D OLED
Tested using Methodology v2.0.1
Updated May 13, 2025 05:10 PM
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Amazon.comTested using Methodology v2.0.1
Updated May 13, 2025 05:09 PM
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Resolution4k
Native Refresh Rate120Hz
TypeOLED
Sub-TypeWOLED
Dolby VisionYes
Screen FinishGlossy
Resolution4k
Native Refresh Rate144Hz
TypeOLED
Sub-TypeQD-OLED
Dolby VisionNo
Screen FinishGlossy
Variants
- OLED48B4AUA (48")
- OLED55B4AUA (55")
- OLED65B4AUA (65")
- OLED77B4AUA (77")
- OLED83B4AUA (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 OLED
The Samsung S90D 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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OLED48B4AUA
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48" (WOLED)
48" (WOLED)
QN48S90DAEXZA
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Finding store55"
OLED55B4AUA
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55" (QD-OLED)
55" (QD-OLED)
QN55S90DAFXZA
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Finding store65"
OLED65B4AUA
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65" (QD-OLED)
65" (QD-OLED)
QN65S90DAFXZA
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OLED77B4AUA
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77" (QD-OLED)
77" (QD-OLED)
QN77S90DAFXZA
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OLED83B4AUA
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83" (WOLED)
83" (WOLED)
QN83S90DAEXZA
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Finding storeMain Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
8.1
8.5
HDR Brightness
6.9
8.3
Full Comparison
Brightness
HDR Brightness
6.9
8.3
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
6.8
8.2
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
SDR Brightness
6.6
6.5
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
Black Level
Contrast
10
10
Contrast Picture
Contrast
Inf : 1
Inf : 1
Native Contrast
Inf : 1
Inf : 1
Lighting Zone Precision
10
10
Lighting Zone Precision Picture
Lighting Zone Transitions
10
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
8,294,400
Contrast And Dark Details In Game Mode
9.5
9.5
Lighting Zone Precision Photo In Game Mode
Preferred LD Video, Moving Object In Game Mode
Game Transitions With VRR And Preferred LD
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%
Color
SDR Color Volume
7.9
9.3
DCI-P3 Gamut Rings
CIELAB DCI-P3 Coverage
94.07%
99.90%
BT.2020 Gamut Rings
CIELAB BT.2020 Coverage
63.23%
83.40%
HDR Color Volume
7.4
9.0
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 BT.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
SDR Pre-Calibration Color Accuracy
9.2
8.2
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE 2000
1.30
2.17
Color dE 2000
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
SDR Post-Calibration Color Accuracy
9.6
9.6
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE 2000
0.22
0.20
Color dE 2000
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
HDR Pre-Calibration Color Accuracy
9.3
8.3
HDR Pre White Balance Picture
HDR Pre Color Picture
White Balance dE ITP
2.70
4.88
Color dE ITP
5.4
6.5
Color Temperature
6,587 K
6,857 K
Picture Mode
Cinema
Filmmaker
HDR Post-Calibration Color Accuracy
9.4
9.4
HDR Post White Balance Picture
HDR Post Color Picture
White Balance dE ITP
2.29
3.20
Color dE ITP
5.00
3.90
Color Temperature
6,558 K
6,572 K
Processing
PQ EOTF Tracking
9.6
7.8
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
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
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
Game Mode Responsiveness
Input Lag
8.8
9.0
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 @ Max Refresh Rate
5.8 ms
4.7 ms
4k @ 60Hz
10.6 ms
10.1 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 @ Max Refresh Rate
5.5 ms
4.8 ms
8k @ 60Hz
N/A
N/A
Supported Resolutions
9.1
9.4
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 Maximum Refresh Rate
120 Hz
144 Hz
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
Yes
Yes
4k @ 120Hz @ 4:4:4
Yes
Yes
4k Maximum Refresh Rate
120 Hz
144 Hz
8k @ 30Hz Or 24Hz
No
No
8k @ 60Hz
No
No
Variable Refresh Rate
7.5
8.5
Native Refresh Rate
120Hz
144Hz
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
VRR + Local Dimming
No Local Dimming
No Local Dimming
CAD In Game Mode @ Max Refresh Rate
9.7
9.7
Pursuit Photo Max Refresh
CAD Heatmap Max Refresh
Transition At Max Refresh
0 to 31
0 to 31
Avg. CAD
30
24
Best 10% CAD
7
14
Worst 10% CAD
90
52
CAD In Game Mode @ 120Hz
9.7
9.7
Pursuit Photo 120Hz
CAD Heatmap 120Hz
Transition At 120Hz
0 to 31
0 to 31
Avg. CAD
30
24
Best 10% CAD
7
14
Worst 10% CAD
90
50
CAD In Game Mode @ 60Hz
9.7
9.7
Pursuit Photo 60Hz
CAD Heatmap 60Hz
Transition 60Hz
0 to 31
0 to 31
Avg. CAD
37
25
Best 10% CAD
7
14
Worst 10% CAD
110
54
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
Motion Handling
Stutter
4.1
4.3
Frame Hold Time @ 24 fps
41.4 ms
40.9 ms
Frame Hold Time @ 60 fps
16.4 ms
15.9 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
Response Time
9.6
9.7
Pursuit Photo 60Hz
Response Time Heatmap 60Hz
Transition At 60Hz
0 to 31
0 to 31
First Response Time
0.3 ms
0.8 ms
Total Response Time
2.9 ms
1.2 ms
Worst 10% Response Time
9.9 ms
5.3 ms
Flicker
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
Reflections
Direct Reflections
6.3
8.2
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
46.9%
21.3%
Screen Finish
Glossy
Glossy
Ambient Black Level Raise
9.3
5.7
Black Level Raise Picture
Bright Room Black Level Raise Graph
Black Luminance @ 0 lx
0.00 cd/m²
0.00 cd/m²
Black Luminance @ 1000 lx
0.26 cd/m²
2.14 cd/m²
Total Reflected Light
8.3
9.1
Bright Room Off Picture
Ring Picture Total Reflection
Total Reflected Light Intensity
13,275% ⋅ pixel
4,259% ⋅ pixel
Diffraction Artifacts
No
No
Ambient Color Saturation
7.5
8.1
Bright Room Color Volume Graph
Low-Luminance Colors @ 1000 lx
66.31%
62.65%
Mid-Luminance Colors @ 1000 lx
60.54%
78.81%
High-Luminance Colors @ 1000 lx
44.08%
77.95%
Panel
Viewing Angle
9.0
9.9
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°
Gray Uniformity
8.2
8.0
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%
Panel Technology
Spectral Power Distribution
Pixels Picture
Type
OLED
OLED
Sub-Type
WOLED
QD-OLED
Subpixel Layout
RWBG
Triangular RGB
Inputs
Input Specifications
Side Inputs Picture
Rear Inputs Picture
HDMI
4 (4x HDMI 2.1)
4 (4x HDMI 2.1)
HDMI 2.1 Rated Speed
48 Gbps
48 Gbps
ATSC Tuner
1.0
1.0
USB Ports
2
2
USB 3.0
No
No
Audio Out 3.5mm
0
1
Wi-Fi
Yes (2.4 GHz, 5 GHz)
Yes (2.4 GHz, 5 GHz)
Ethernet Speed
100 Mbps
100 Mbps
Composite In
0
0
Digital Optical Audio Out
1
1
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
HDR Format Support
HDR10
Yes
Yes
HDR10+
No
Yes
Dolby Vision
Yes
No
HLG
Yes
Yes
Design
Style
Design Picture
Curved
No
No
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
Smart Features
Interface
Smart TV Picture
Smart OS
webOS
Tizen
Version
24
2024
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
Remote
Remote Picture
Voice Control
Yes
Yes
TV Controls
Controls Picture
Mute Switch
No
Yes
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
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
Digital Room Correction
Yes
Yes
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42" (WOLED)
42" (WOLED)
QN42S90DAEXZA
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Finding store48"
OLED48B4AUA
Searching
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48" (WOLED)
48" (WOLED)
QN48S90DAEXZA
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Finding store55"
OLED55B4AUA
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55" (QD-OLED)
55" (QD-OLED)
QN55S90DAFXZA
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OLED65B4AUA
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65" (QD-OLED)
65" (QD-OLED)
QN65S90DAFXZA
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OLED77B4AUA
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77" (QD-OLED)
77" (QD-OLED)
QN77S90DAFXZA
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OLED83B4AUA
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83" (WOLED)
83" (WOLED)
QN83S90DAEXZA
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LG B4 OLED
Samsung S90D OLED
Comments
LG B4 OLED vs Samsung S90D OLED: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.
Reviewing this camera and getting the stats on record helps establish and compare how other video-focused Sony Cameras like the ZV-E1, & A7C II, and even the a6700 perform.
A new ZV-E1 II (mark 2) or an FX3 II (mark 2) might be released, and it would be nice to compare all of these cameras.
Several YouTubers use the FX3 for video production, so the high-end prosumer market uses it.
My wife and I were wondering what a “Flatbed Microwave” is a good choice.
I’ve noticed this microwave too, the Toshiba ML2-EM12EA-BS, which seems like a nice microwave but Toshiba doesn’t have any information on their website about it. Is it a microwave built just for Amazon? Is it a modern (2022) take on the EM131A5C (2017)? I like the design approach a bit better than the EM131A5C.
I wonder how it would review.
https://www.amazon.com/Toshiba-ML2-EM12EA-BS-Microwave-Position-Memory/dp/B08G4H2Z9G
Our Microwave Oven Button broke, so we are shopping for a new microwave. The since RTINGS.com has done on the new features has been amazing and is the best in the market so far as I can see. I’m glad you are getting into the market and doing great reviews.
It would be nice if the microwave table had a liner type. I’ve noticed some warnings on some microwaves shipping to California that have warning labels on the materials they have used. We currently have a stainless steel-lined microwave, and I’m leaning toward getting another SS-lined microwave, but the table doesn’t support that filtering.
I’d love it if you could get more Microwaves on the list. It seems like there are several Panasonic models not yet in this list.
I have also noticed that there is a potato setting on a lot of microwaves. On Reddit, I’ve seen some people comment that their microwave cooks a “Perfect Baked Potato,” it would be interesting to know which microwaves can microwave cook the potato and convection oven or grill/broil finish a potato for a crispy skin. Doing this for other meats would be amazing, too.
While the uniformity test on ground beef was interesting, it would have been more interesting if it had been done on frozen Salmon. We are trying to eat more fish, and we’d love to develop healthy meals involving fish quickly from the freezer.
It’s not clear from the reviews how successful the sensor is on most of these microwaves.
It’s not clear if any of the microwaves listen for popcorn pops; the article hinted that most just use a timer.
The articles seem to indicate the that ‘holes’ in the microwave might affect performance more than any of the electronics. Also, I’ve seen that some microwaves might use a convection fan while working; which ones do this?
Thank you, and keep up the good work, but I’ll likely order a microwave tonight based on my limited information.
When will Thermal Performance be included in the reviews?
I have a ZV-E10, and my largest problem with the camera is a short thermal shutdown time when operating at 4k.
Batteries can be worked around with power wall adapters or external battery packs, but a thermal shut down can take you out of your shoot for an hour or more. It’s a huge problem.
I like my ZV-E10, but I might have to consider it more of a 1080p camera because of its thermal performance.
In future camera reviews, I’d love to see a comprehensive thermal run time performance check for a variety of camera features. If one of the prime differentiators between the a6700, FX30, and the ZV-E10 II is the thermal performance, you should be able to see that glaring difference in the RTINGS review.
I’d also like to know if a camera can be set up or configured to avoid thermal shutdown for your shooting needs.
Do the following factors affect thermals:
Some of the latest prosumer cameras almost seem to have fake specks, as they might technically achieve 4k but can only do it for a few minutes, and that just doesn’t seem right to advertise it as a 4k camera.
Is there an ETA when the review will release? I guess the TVs are now available at BestBuy. We are buying a TV tomorrow and we are currently comparing the