Products
LG CX OLED
Samsung QN900A 8K
Tested using Methodology v1.6
Updated Sep 24, 2025 06:38 PM
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Tested using Methodology v1.6
Updated Sep 25, 2025 02:19 PM
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TypeOLED
Sub-Type
WOLED
Resolution4k
TypeLED
Sub-Type
VA
Resolution8k
Our Verdict
LG CX OLED
Samsung QN900A 8K
The LG CX OLED is better than the Samsung QN900A 8K, although they use different panels. The Samsung has a VA panel, but its native contrast ratio is lower than typical, and it suffers from some distracting blooming. The LG, on the other hand, uses an OLED panel, so it has a near-infinite contrast ratio, resulting in deeper blacks with no visible blooming. While the LG can't display an 8k signal like the Samsung, there still isn't much 8k content.
Variants
- OLED48CXPUB (48")
- OLED55CXPUA (55")
- OLED65CXPUA (65")
- OLED77CXPUA (77")
- QN65QN900AFXZA (65")
- QN75QN900AFXZA (75")
- QN85QN900AFXZA (85")
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48"
OLED48CXPUB
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48"
55"
OLED55CXPUA
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55"
65"
OLED65CXPUA
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65"
QN65QN900AFXZA
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75"
75"
QN75QN900AFXZA
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77"
OLED77CXPUA
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77"
85"
85"
QN85QN900AFXZA
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
8.8
8.1
Contrast
10
7.5
Local Dimming
10
7.0
Black Uniformity
10
6.6
SDR Brightness
7.0
8.9
Full Comparison
Design
Style
Design Picture
Curved
No
No
Accelerated Longevity Test
Uniformity Pictures
Month 30
50% Gray
Month 30
50% Gray
Longevity Graph
Stand
Stand Picture
Back
Back Picture
Wall Mount
VESA 300x200
VESA 400x300
Borders
Borders Picture
Borders
0.35" (0.9 cm)
0.08" (0.2 cm)
Thickness
Thickness Picture
Max Thickness
1.93" (4.9 cm)
0.63" (1.6 cm)
Build Quality
9.0
9.0
Build quality picture
Picture Quality
Contrast
10
7.5
Checkerboard Picture
Native Contrast
Inf : 1
1,658 : 1
Contrast with local dimming
N/A
20,392 : 1
SDR Brightness
7.0
8.9
Real Scene Peak Brightness
321 cd/m²
844 cd/m²
Peak 2% Window
459 cd/m²
1,364 cd/m²
Peak 10% Window
456 cd/m²
1,408 cd/m²
Peak 25% Window
414 cd/m²
896 cd/m²
Peak 50% Window
340 cd/m²
550 cd/m²
Peak 100% Window
176 cd/m²
386 cd/m²
Sustained 2% Window
439 cd/m²
1,285 cd/m²
Sustained 10% Window
435 cd/m²
1,333 cd/m²
Sustained 25% Window
395 cd/m²
891 cd/m²
Sustained 50% Window
324 cd/m²
543 cd/m²
Sustained 100% Window
146 cd/m²
381 cd/m²
Automatic Brightness Limiting (ABL)
0.069
0.073
Local Dimming
10
7.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
No
Yes
Backlight
No Backlight
Full-Array
Local Dimming In Game Mode
10
7.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
No
Yes
Backlight
No Backlight
Full-Array
HDR Brightness
7.1
8.9
EOTF
Real Scene Highlight
681 cd/m²
1,440 cd/m²
Peak 2% Window
760 cd/m²
1,554 cd/m²
Peak 10% Window
817 cd/m²
1,590 cd/m²
Peak 25% Window
465 cd/m²
1,018 cd/m²
Peak 50% Window
311 cd/m²
618 cd/m²
Peak 100% Window
152 cd/m²
409 cd/m²
Sustained 2% Window
720 cd/m²
1,462 cd/m²
Sustained 10% Window
776 cd/m²
1,474 cd/m²
Sustained 25% Window
443 cd/m²
1,007 cd/m²
Sustained 50% Window
293 cd/m²
610 cd/m²
Sustained 100% Window
146 cd/m²
403 cd/m²
Automatic Brightness Limiting (ABL)
0.101
0.075
HDR Brightness In Game Mode
6.7
8.7
Game Mode EOTF
Real Scene Highlight
563 cd/m²
1,083 cd/m²
Peak 2% Window
749 cd/m²
1,642 cd/m²
Peak 10% Window
804 cd/m²
1,592 cd/m²
Peak 25% Window
457 cd/m²
1,034 cd/m²
Peak 50% Window
320 cd/m²
615 cd/m²
Peak 100% Window
152 cd/m²
401 cd/m²
Sustained 2% Window
633 cd/m²
1,544 cd/m²
Sustained 10% Window
768 cd/m²
1,497 cd/m²
Sustained 25% Window
433 cd/m²
1,019 cd/m²
Sustained 50% Window
302 cd/m²
608 cd/m²
Sustained 100% Window
147 cd/m²
394 cd/m²
Automatic Brightness Limiting (ABL)
0.096
0.078
Gray Uniformity
8.5
7.8
50% Uniformity Picture
50% Std. Dev.
1.526%
2.282%
50% DSE
0.135%
0.179%
5% Uniformity Picture
5% Std. Dev.
0.401%
0.968%
5% DSE
0.106%
0.080%
Black Uniformity
10
6.6
Native Black Uniformity Picture
Native Std. Dev.
0.416%
2.337%
Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
N/A
0.306%
Viewing Angle
8.4
6.8
Viewing Angle Video
Chroma Graph
Color Washout
48°
36°
Hue Graph
Color Shift
32°
25°
Lightness Graph
Brightness Loss
62°
47°
Black Level Raise
70°
70°
Gamma Shift
57°
17°
Reflections
9.3
8.9
Reflections Picture
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Glossy
Glossy
Total Reflections
1.5%
2.3%
Indirect Reflections
0.4%
1.4%
Calculated Direct Reflections
1.1%
0.9%
Pre Calibration
8.2
6.7
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE
2.47
4.80
Color dE
1.77
2.81
Gamma
2.19
1.96
Color Temperature
7,034 K
6,315 K
Picture Mode
Expert (Dark Room)
Movie
Color Temp Setting
Warm 2
Warm 2
Gamma Setting
2.2
2.2
Post Calibration
9.6
9.5
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE
0.16
0.34
Color dE
1.00
1.08
Gamma
2.20
2.20
Color Temperature
6,512 K
6,465 K
White Balance Calibration
22 point
20 point
Color Calibration
Yes
Yes
480p Input
8.0
8.0
480p Picture
720p Input
8.0
8.0
720p Picture
1080p Input
9.0
9.0
1080p Picture
4k Input
10
9.5
4k Picture
8k Input
0.0
9.5
8k Picture
Pixels
Pixels Picture
Type
OLED
LED
Sub-Type
WOLED
VA
Color Gamut
8.6
8.2
Wide Color Gamut
Yes
Yes
Color Gamut DCI-P3 Picture
DCI P3 xy
97.32%
93.63%
DCI P3 uv
98.71%
96.01%
Color Gamut Rec.2020 Picture
Rec 2020 xy
71.67%
67.58%
Rec 2020 uv
75.65%
70.84%
Color Volume
7.1
7.7
P3 Color Volume ITP Picture
Normalized DCI P3 Coverage ITP
80.6%
87.7%
10,000 cd/m² DCI P3 Coverage ITP
44.2%
59.2%
2020 Color Volume ITP Picture
Normalized Rec 2020 Coverage ITP
61.0%
64.7%
10,000 cd/m² Rec 2020 Coverage ITP
33.5%
43.4%
Gradient
8.7
7.9
Gradient Picture
Color Depth
10 Bit
10 Bit
Red (Std. Dev.)
0.083
0.122
Green (Std. Dev.)
0.105
0.120
Blue (Std. Dev.)
0.092
0.090
Gray (Std. Dev.)
0.081
0.109
Temporary Image Retention
10
10
Image Retention Picture
IR after 0 min recovery
0.00%
0.00%
IR after 2 min recovery
0.00%
0.00%
IR after 4 min recovery
0.00%
0.00%
IR after 6 min recovery
0.00%
0.00%
IR after 8 min recovery
0.00%
0.00%
IR after 10 min recovery
0.00%
0.00%
Permanent Burn-In Risk
2.0
10
Permanent Burn-In Risk
Yes
No
Motion
Response Time
9.9
8.3
Motion Blur Picture
Response Time Chart
80% Response Time
0.3 ms
4.6 ms
100% Response Time
1.7 ms
10.2 ms
Flicker-Free
10
9.9
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
0 Hz
960 Hz
Black Frame Insertion (BFI)
10
10
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
Yes
Yes
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
4.9
6.8
Frame Hold Time @ 24 fps
39.9 ms
31.5 ms
Frame Hold Time @ 60 fps
14.9 ms
6.5 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
9.4
Native Refresh Rate
120 Hz
120 Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Yes
Unknown
FreeSync
Yes
Yes
G-SYNC Compatible
Yes (NVIDIA Certified)
Yes
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
120 Hz
1440p VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
HDMI
HDMI
Inputs
Input Lag
9.5
9.7
1080p @ 60Hz
13.6 ms
10.1 ms
1080p @ 60Hz Outside Game Mode
97.0 ms
101.1 ms
1440p @ 60Hz
13.8 ms
10.4 ms
4k @ 60Hz
13.6 ms
10.6 ms
4k @ 60Hz + 10-Bit HDR
13.5 ms
10.4 ms
4k @ 60Hz @ 4:4:4
13.6 ms
10.6 ms
4k @ 60Hz Outside Game Mode
97.0 ms
76.2 ms
4k @ 60Hz With Interpolation
92.9 ms
21.1 ms
8k @ 60Hz
N/A
10.6 ms
1080p @ 120Hz
6.9 ms
5.8 ms
1440p @ 120Hz
6.9 ms
5.9 ms
4k @ 120Hz
6.7 ms
6.0 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
Supported Resolutions
9.6
10
Resolution
4k
8k
1080p @ 60Hz @ 4:4:4
Yes
Yes
1080p @ 120Hz
Yes (native support)
Yes (native support)
1440p @ 60Hz
Yes (forced resolution required)
Yes (native support)
1440p @ 120Hz
Yes (native support)
Yes (native support)
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
Yes (native support)
Yes (native support)
8k @ 30Hz or 24Hz
No
Yes
8k @ 60Hz
No
Yes
Advanced Console Compatibility
PS5 Screenshot
Xbox Series X Screenshot
Auto Low Latency Mode (ALLM)
Yes
Yes
PS5, 4k @ 120Hz + HDR
Yes
Yes
PS5, 4k @ 120Hz
Yes
Yes
PS5, 4k @ 60Hz + HDR
Yes
Yes
PS5, 1440p @ 120Hz
PS5 can't do 1440p
PS5 can't do 1440p
PS5, 1080p @ 120Hz
Yes
Yes
PS5, Variable Refresh Rate
PS5 can't do VRR yet
PS5 can't do VRR yet
Xbox Series X, 4k @ 120Hz + HDR
Yes
Yes
Xbox Series X, 4k @ 120Hz
Yes
Yes
Xbox Series X, 4k @ 60Hz + HDR
Yes
Yes
Xbox Series X, 1440p @ 120Hz
Yes
Yes
Xbox Series X, 1080p @ 120Hz
Yes
Yes
Xbox Series X, Variable Refresh Rate
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)
USB 3.0
No
No
Variable Analog Audio Out
Yes
No
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
3
3
Digital Optical Audio Out
1
1
Analog Audio Out 3.5mm
1
0
Analog Audio Out RCA
0
0
Component In
0
0
Composite In
1 (incl. adapter)
0
Tuner (Cable/Ant)
1
1
Ethernet
1
1
DisplayPort
0
0
IR In
0
0
SD/SDHC
0
0
Audio Passthrough
ARC
Yes (HDMI 2)
Yes (HDMI 3)
eARC support
Yes
Yes
Dolby Atmos via TrueHD via eARC
Yes
Yes
DTS:X via DTS-HD MA via eARC
No
No
5.1 Dolby Digital via ARC
Yes
Yes
5.1 DTS via ARC
No
No
5.1 Dolby Digital via Optical
Yes
Yes
5.1 DTS via Optical
No
No
Sound Quality
Frequency Response
7.6
6.9
Frequency Response
Low-Frequency Extension
63.50 Hz
119.87 Hz
Std. Dev. @ 70
2.12 dB
3.88 dB
Std. Dev. @ 80
2.12 dB
3.47 dB
Std. Dev. @ Max
5.18 dB
3.45 dB
Max
91.2 dB SPL
90.0 dB SPL
Dynamic Range Compression
5.62 dB
4.41 dB
Distortion
7.0
7.2
Total Harmonic Distortion
Weighted THD @ 80
0.085
0.481
Weighted THD @ Max
0.519
1.285
IMD @ 80
2.00%
0.64%
IMD @ Max
10.89%
2.27%
Smart Features
Interface
8.5
8.5
Smart TV Picture
Smart OS
webOS
Tizen
Version
5.0
2021
Ease of Use
Easy
Easy
Smoothness
Average
Very Smooth
Time Taken to Select YouTube
2 s
2 s
Time Taken to Change Backlight
7 s
5 s
Advanced Options
Many
Many
Ad-Free
0.0
0.0
Ads Picture
Ads
Yes
Yes
Opt-out
No
No
Suggested Content in Home
Yes
Yes
Opt-out of Suggested Content
No
No
Apps and Features
8.0
8.5
Apps Picture
App Selection
Great
Great
App Smoothness
Average
Very Smooth
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 TV Plus
Samsung SmartThings
TV Controls
Controls Picture
In The Box
In The Box Picture
Misc
Power Consumption
75 W
156 W
Power Consumption (Max)
178 W
331 W
Firmware
03.00.45
1012
Check Price
48"
OLED48CXPUB
SEARCH
Amazon.com
48"
55"
OLED55CXPUA
SEARCH
Amazon.com
55"
65"
OLED65CXPUA
SEE PRICE
Amazon.com
65"
QN65QN900AFXZA
SEE PRICE
Amazon.com
75"
75"
QN75QN900AFXZA
SEE PRICE
Amazon.com
77"
OLED77CXPUA
SEARCH
Amazon.com
77"
85"
85"
QN85QN900AFXZA
SEE PRICE
Amazon.com
LG CX OLED
Samsung QN900A 8K
Comments
LG CX OLED vs Samsung QN900A 8K: Main Discussion
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