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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 G4 OLED vs Samsung S90D OLED
Side-by-Side Comparison
Products
LG G4 OLED
Samsung S90D OLED
Tested using Methodology v2.0.1
Updated May 13, 2025 12:44 PM
SEE PRICE
Amazon.comTested using Methodology v2.0.1
Updated Jun 02, 2025 06:11 PM
SEE PRICE
Amazon.com
Resolution4k
Native Refresh Rate144Hz
TypeOLED
Sub-TypeWOLED
Dolby VisionYes
Screen FinishGlossy
Resolution4k
Native Refresh Rate144Hz
TypeOLED
Sub-TypeQD-OLED
Dolby VisionNo
Screen FinishGlossy
Variants
- OLED55G4SUB (55")
- OLED65G4SUB (65")
- OLED77G4WUA (77")
- OLED83G4WUA (83")
- OLED97G4WUA (97")
- QN42S90DAEXZA (42" (WOLED))
- QN48S90DAEXZA (48" (WOLED))
- QN55S90DAFXZA (55" (QD-OLED))
- QN65S90DAFXZA (65" (QD-OLED))
- QN77S90DAFXZA (77" (QD-OLED))
- QN83S90DAEXZA (83" (WOLED))
Our Verdict
LG G4 OLED
Samsung S90D OLED
The LG G4 OLED and the Samsung S90D OLED are both amazing TVs, but there are some differences worth noting. The Samsung has a wider color gamut, so it can display more vibrant and lifelike colors, and it has better color volume, so it can display brighter colors. The S90D also has no noticeable banding in colors, while the LG does have some banding in certain colors. On the other hand, the LG has better low-quality content smoothing, so it's the better choice if you regularly watch DVDs or low-quality streams. The LG also supports both Dolby Vision and DTS audio formats, which is great if you're looking to get the most out of your 4k Blu-ray collection. On top of that, the LG has better SDR brightness, so it overcomes more glare in a bright room.
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42" (WOLED)
42" (WOLED)
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55" (QD-OLED)
55" (QD-OLED)
QN55S90DAFXZA
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65" (QD-OLED)
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77" (QD-OLED)
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83" (WOLED)
83" (WOLED)
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Main Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
8.6
8.5
SDR Brightness
7.6
6.5
HDR Brightness
8.6
8.3
Full Comparison
Brightness
HDR Brightness
8.6
8.3
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
1,194 cd/m²
1,045 cd/m²
Yellow Skyscraper (~700 cd/m²)
719 cd/m²
755 cd/m²
Landscape Pool (~300 cd/m²)
303 cd/m²
319 cd/m²
Peak 2% Window
1,550 cd/m²
1,199 cd/m²
Peak 10% Window
1,459 cd/m²
1,193 cd/m²
Peak 25% Window
701 cd/m²
640 cd/m²
Peak 50% Window
468 cd/m²
334 cd/m²
Peak 100% Window
226 cd/m²
214 cd/m²
Sustained 2% Window
1,487 cd/m²
1,192 cd/m²
Sustained 10% Window
1,399 cd/m²
948 cd/m²
Sustained 25% Window
672 cd/m²
614 cd/m²
Sustained 50% Window
468 cd/m²
329 cd/m²
Sustained 100% Window
224 cd/m²
211 cd/m²
Automatic Brightness Limiting (ABL)
0.108
0.101
HDR Brightness In Game Mode
8.5
8.2
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
1,190 cd/m²
973 cd/m²
Yellow Skyscraper (~700 cd/m²)
692 cd/m²
822 cd/m²
Landscape Pool (~300 cd/m²)
286 cd/m²
392 cd/m²
Peak 2% Window
1,433 cd/m²
1,193 cd/m²
Peak 10% Window
1,413 cd/m²
1,190 cd/m²
Peak 25% Window
611 cd/m²
641 cd/m²
Peak 50% Window
420 cd/m²
335 cd/m²
Peak 100% Window
221 cd/m²
216 cd/m²
Sustained 2% Window
1,401 cd/m²
1,187 cd/m²
Sustained 10% Window
1,376 cd/m²
795 cd/m²
Sustained 25% Window
600 cd/m²
584 cd/m²
Sustained 50% Window
420 cd/m²
330 cd/m²
Sustained 100% Window
219 cd/m²
213 cd/m²
Automatic Brightness Limiting (ABL)
0.104
0.097
SDR Brightness
7.6
6.5
Real Scene Peak Brightness
513 cd/m²
381 cd/m²
Peak 2% Window
611 cd/m²
496 cd/m²
Peak 10% Window
596 cd/m²
493 cd/m²
Peak 25% Window
546 cd/m²
497 cd/m²
Peak 50% Window
500 cd/m²
316 cd/m²
Peak 100% Window
317 cd/m²
209 cd/m²
Sustained 2% Window
604 cd/m²
487 cd/m²
Sustained 10% Window
589 cd/m²
486 cd/m²
Sustained 25% Window
543 cd/m²
487 cd/m²
Sustained 50% Window
498 cd/m²
313 cd/m²
Sustained 100% Window
317 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.
0.167%
0.155%
Color
SDR Color Volume
7.5
9.3
DCI-P3 Gamut Rings
CIELAB DCI-P3 Coverage
91.18%
99.90%
BT.2020 Gamut Rings
CIELAB BT.2020 Coverage
61.27%
83.40%
HDR Color Volume
8.0
9.0
P3 Color Volume ITP Picture
1,000 cd/m² DCI P3 Coverage ITP
88.3%
99.4%
2020 Color Volume ITP Picture
10,000 cd/m² BT.2020 Coverage ITP
39.7%
55.2%
White Luminance
1,585 cd/m²
1,197 cd/m²
Red Luminance
144 cd/m²
281 cd/m²
Green Luminance
435 cd/m²
856 cd/m²
Blue Luminance
51 cd/m²
62 cd/m²
Cyan Luminance
474 cd/m²
919 cd/m²
Magenta Luminance
183 cd/m²
342 cd/m²
Yellow Luminance
553 cd/m²
1,133 cd/m²
SDR Pre-Calibration Color Accuracy
9.3
8.2
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE 2000
0.99
2.17
Color dE 2000
0.79
1.44
Gamma
2.19
2.12
Color Temperature
6,381 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
9.7
9.6
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE 2000
0.13
0.20
Color dE 2000
0.73
0.88
Gamma
2.20
2.19
Color Temperature
6,477 K
6,532 K
White Balance Calibration
22 point
20 point
Color Calibration
Yes
Yes
HDR Pre-Calibration Color Accuracy
8.7
8.3
HDR Pre White Balance Picture
HDR Pre Color Picture
White Balance dE ITP
5.42
4.88
Color dE ITP
6.4
6.5
Color Temperature
6,637 K
6,857 K
Picture Mode
Cinema
Filmmaker
HDR Post-Calibration Color Accuracy
9.0
9.4
HDR Post White Balance Picture
HDR Post Color Picture
White Balance dE ITP
4.36
3.20
Color dE ITP
6.20
3.90
Color Temperature
6,425 K
6,572 K
Processing
PQ EOTF Tracking
8.1
7.8
PQ EOTF Graph
600 Nit Tracking Delta
0.0048
0.0057
1000 Nit Tracking Delta
0.0050
0.0058
4000 Nit Tracking Delta
0.0050
0.0049
Low-Quality Content Smoothing
8.7
7.3
Low-Quality Content Smoothing Picture
Smoothing
9.0
7.0
Detail Preservation
8.0
8.0
Upscaling: Sharpness Processing
8.5
8.0
Sharpness Picture - 480p
HDR Native Gradient
8.3
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
8.0
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
9.0
9.0
1080p @ 60Hz
10.0 ms
10.1 ms
1080p @ 60Hz Outside Game Mode
89.7 ms
83.8 ms
1080p @ 120Hz
5.3 ms
5.4 ms
1080p @ Max Refresh Rate
4.6 ms
4.7 ms
4k @ 60Hz
9.9 ms
10.1 ms
4k @ 60Hz @ 4:4:4
10.0 ms
10.1 ms
4k @ 60Hz Outside Game Mode
89.6 ms
67.4 ms
4k @ 60Hz With Interpolation
85.7 ms
19.7 ms
4k @ 120Hz
5.4 ms
5.4 ms
4k @ Max Refresh Rate
4.6 ms
4.8 ms
8k @ 60Hz
N/A
N/A
Supported Resolutions
9.4
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
144 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
144 Hz
144 Hz
8k @ 30Hz Or 24Hz
No
No
8k @ 60Hz
No
No
Variable Refresh Rate
8.5
8.5
Native Refresh Rate
144Hz
144Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Yes
Yes
FreeSync
Yes
Yes
G-SYNC Compatible
Yes (NVIDIA Certified)
Yes
4k VRR Maximum
144 Hz
144 Hz
4k VRR Minimum
< 20 Hz
< 20 Hz
1080p VRR Maximum
144 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
9.5
9.7
Pursuit Photo Max Refresh
CAD Heatmap Max Refresh
Transition At Max Refresh
0 to 31
0 to 31
Avg. CAD
40
24
Best 10% CAD
15
14
Worst 10% CAD
109
52
CAD In Game Mode @ 120Hz
9.6
9.7
Pursuit Photo 120Hz
CAD Heatmap 120Hz
Transition At 120Hz
0 to 31
0 to 31
Avg. CAD
34
24
Best 10% CAD
14
14
Worst 10% CAD
76
50
CAD In Game Mode @ 60Hz
9.4
9.7
Pursuit Photo 60Hz
CAD Heatmap 60Hz
Transition 60Hz
0 to 31
0 to 31
Avg. CAD
49
25
Best 10% CAD
14
14
Worst 10% CAD
140
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
4.2
4.3
Frame Hold Time @ 24 fps
41.1 ms
40.9 ms
Frame Hold Time @ 60 fps
16.1 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
9.5
9.7
Pursuit Photo 60Hz
Response Time Heatmap 60Hz
Transition At 60Hz
0 to 31
0 to 31
First Response Time
0.6 ms
0.8 ms
Total Response Time
3.5 ms
1.2 ms
Worst 10% Response Time
10.1 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
8.2
8.2
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
21.8%
21.3%
Screen Finish
Glossy
Glossy
Ambient Black Level Raise
7.0
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
1.62 cd/m²
2.14 cd/m²
Total Reflected Light
9.0
9.1
Bright Room Off Picture
Ring Picture Total Reflection
Total Reflected Light Intensity
5,015% ⋅ pixel
4,259% ⋅ pixel
Diffraction Artifacts
No
No
Ambient Color Saturation
6.5
8.1
Bright Room Color Volume Graph
Low-Luminance Colors @ 1000 lx
57.98%
62.65%
Mid-Luminance Colors @ 1000 lx
54.22%
78.81%
High-Luminance Colors @ 1000 lx
32.43%
77.95%
Panel
Viewing Angle
9.9
9.9
Viewing Angle Video
Chroma Graph
Color Washout
70°
70°
Hue Graph
Color Shift
70°
70°
Lightness Graph
Brightness Loss
70°
70°
Black Level Raise
70°
70°
Gamma Shift
70°
70°
Gray Uniformity
7.9
8.0
50% Uniformity Picture
50% Std. Dev.
1.346%
1.468%
50% DSE
0.143%
0.103%
5% Uniformity Picture
5% Std. Dev.
0.463%
0.417%
5% DSE
0.085%
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
3
2
USB 3.0
No
No
Audio Out 3.5mm
0
1
Wi-Fi
Yes (2.4 GHz, 5 GHz, 6 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 300x300
VESA 300x200
Borders
Borders Picture
Borders
0.24" (0.6 cm)
0.28" (0.7 cm)
Thickness
Thickness Picture
Max Thickness
0.94" (2.4 cm)
1.61" (4.1 cm)
Build Quality
9.0
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
Yes
Yes
In The Box
In The Box Picture
Misc
Power Consumption
78 W
102 W
Power Consumption (Max)
233 W
231 W
Firmware
03.10.27
1059
Sound Quality
Frequency Response
7.5
7.4
Frequency Response
Low-Frequency Extension
80.00 Hz
71.27 Hz
Std. Dev. @ 70
3.06 dB
2.82 dB
Std. Dev. @ 80
2.72 dB
2.93 dB
Std. Dev. @ Max
4.04 dB
4.86 dB
Max
91.9 dB SPL
88.1 dB SPL
Dynamic Range Compression
4.90 dB
4.08 dB
Digital Room Correction
Yes
Yes
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42" (WOLED)
42" (WOLED)
QN42S90DAEXZA
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48" (WOLED)
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OLED55G4SUB
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55" (QD-OLED)
55" (QD-OLED)
QN55S90DAFXZA
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OLED65G4SUB
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65" (QD-OLED)
65" (QD-OLED)
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OLED77G4WUA
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77" (QD-OLED)
77" (QD-OLED)
QN77S90DAFXZA
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OLED83G4WUA
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83" (WOLED)
83" (WOLED)
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LG G4 OLED
Samsung S90D OLED
Comments
LG G4 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.
Hello! Help with personalized buying advice is something our experts offer only via our insider forums. We do have lots of self-service tools and recommendation articles that should be helpful as well though!
I can get s90d 77 for $1k cheaper than G4. Which is the better TV for SDR and HDR streaming?
Hello! Help with personalized buying advice is something our experts offer only via our insider forums. We do have lots of self-service tools and recommendation articles that should be helpful as well though!
Hi there, I’m looking at these two TVs in 65" presently. The G4 is about £200+ more expensive in the UK right now and was wondering if it’s worth spending the extra money?
The most important differences for my use case seems to be better SDR brightness and low quality content smoothing for the G4. Do these areas alone warrant the additional £££?
For context, I’m mostly playing media using Plex on an Nvidia Shield Pro, with a lots of HDR rips of physical media, but there’s proportionally much more lower bitrate SDR content from older DVDs and Blurays. Would the Shield’s AI upscaling help mitigate the S90Ds poorer content smoothing, for example?
How dim would SDR content look on the S90D compared to the G4? The TV would primarily be used during evenings in a dark environment but for casual use, it’s also important that it can be used during the day. There are large windows nearby where it’s difficult to block out all the light with blinds/curtains. Is the better SDR brightness of the G4 worth it if you’re just watching news/ normal TV programs and YouTube during daytime? If the S90D is bright enough I’d be tempted to stick with this.
The last query is whether the additional brightness of the G4 would be that visible as most HDR content presently is mastered to 1000 nits? It seems that maybe the improved colour gamut and colour volume of the S90D will have a greater HDR impact over the increased brightness of the G4?
Thanks in advance :)
No, the PS5 doesn’t do any processing of its own for streaming apps. It also doesn’t support Dolby Vision on streaming apps, whereas if you have a TV that supports DV, the built-in apps will support it. Built-in apps also work better when it comes to switching between SDR and HDR, displaying the content in the proper frame rate, and you use less power using the built-in apps versus the PS5. I’d recommend sticking to the TV’s built-in apps for streaming content. Thanks!
Does the difference in how TV’s process this matter if you’re using something like a PS5 to stream? Does it do any processing of it’s own?
Hello! Help with personalized buying advice is something our experts offer only via our insider forums. We do have lots of self-service tools and recommendation articles that should be helpful as well though!
We’re looking to buy a 77" OLED TV, but unfortunately we lost the panel lottery in Australia and the 77" S90D in Australia has a WOLED instead of a QD-OLED. Would you still recommend the S90D over the G4 for value if the S90D screen is a WOLED without MLA?
We also want to pair it with the Q990D soundbar. Would that change anything? Is Q-Symphony worth choosing a S90D if it doesn’t have QD-OLED?