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- Table of Contents
- Top
- Main Differences
- Market Context
- Design
- Picture Quality
- Motion
- Inputs
- Sound Quality
- Smart Features
- Comments
LG SM9970 8k vs Samsung Q800T 8k QLED
Side-by-Side Comparison
Products
LG SM9970 8k
Samsung Q800T 8k QLED
Tested using Methodology v1.5
Updated Sep 04, 2021 04:38 PM
SEE PRICE
Amazon.comTested using Methodology v1.6
Updated Sep 04, 2021 04:49 AM
SEE PRICE
Amazon.com
TypeLED
Sub-TypeIPS
Resolution8k
TypeLED
Sub-TypeVA
Resolution8k
Variants
- 75SM9970PUA (75")
- QN65Q800TAFXZA (65")
- QN75Q800TAFXZA (75")
- QN82Q800TAFXZA (82")
Our Verdict
LG SM9970 8k
Samsung Q800T 8k QLED
The Samsung Q800T 8k QLED is a much better 8k TV than the LG SM9970 8k. The Samsung has a VA panel, producing much deeper blacks, and due to the 'Ultra Viewing Angle' layer added on, it even has wider viewing angles. The Samsung also gets much brighter, has a much better color volume, and it supports FreeSync VRR. The LG handles reflections slightly better, it has a quicker response time, and it upscales 4k content a bit better.
Check Price
65"
65"
QN65Q800TAFXZA
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75SM9970PUA
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QN75Q800TAFXZA
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82"
QN82Q800TAFXZA
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Two or more of the products selected have been tested with different test methodologies, so some of the results below aren't directly comparable.
Learn how our test benches and scoring system work, and read more about the latest changes to our
TVs test methodology.
Read more
Main Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
7.5
8.0
Local Dimming
5.5
7.5
Contrast
6.3
7.5
Full Comparison
Market Context
Market Context
Design
Style
Design Picture
Curved
No
No
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Stand
Stand Picture
Back
Back Picture
Wall Mount
VESA 600x400
VESA 400x300
Borders
Borders Picture
Borders
0.55" (1.4 cm)
0.43" (1.1 cm)
Thickness
Thickness Picture
Max Thickness
2.80" (7.1 cm)
1.54" (3.9 cm)
Build Quality
7.5
8.5
Build quality picture
Picture Quality
Contrast
6.3
7.5
Checkerboard Picture
Native Contrast
898 : 1
1,667 : 1
Contrast with local dimming
2,622 : 1
9,186 : 1
SDR Brightness
7.8
8.7
Real Scene Peak Brightness
381 cd/m²
661 cd/m²
Peak 2% Window
665 cd/m²
894 cd/m²
Peak 10% Window
757 cd/m²
1,276 cd/m²
Peak 25% Window
685 cd/m²
1,039 cd/m²
Peak 50% Window
441 cd/m²
674 cd/m²
Peak 100% Window
370 cd/m²
384 cd/m²
Sustained 2% Window
268 cd/m²
858 cd/m²
Sustained 10% Window
303 cd/m²
1,176 cd/m²
Sustained 25% Window
337 cd/m²
993 cd/m²
Sustained 50% Window
357 cd/m²
669 cd/m²
Sustained 100% Window
370 cd/m²
379 cd/m²
Automatic Brightness Limiting (ABL)
0.020
0.059
Local Dimming
5.5
7.5
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
Yes
Yes
Backlight
Full-Array
Full-Array
Local Dimming In Game Mode
6.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
Yes
Backlight
Full-Array
HDR Brightness
6.8
8.7
EOTF
Real Scene Highlight
498 cd/m²
1,175 cd/m²
Peak 2% Window
761 cd/m²
893 cd/m²
Peak 10% Window
941 cd/m²
1,385 cd/m²
Peak 25% Window
821 cd/m²
922 cd/m²
Peak 50% Window
543 cd/m²
592 cd/m²
Peak 100% Window
456 cd/m²
368 cd/m²
Sustained 2% Window
304 cd/m²
852 cd/m²
Sustained 10% Window
374 cd/m²
1,193 cd/m²
Sustained 25% Window
422 cd/m²
874 cd/m²
Sustained 50% Window
439 cd/m²
591 cd/m²
Sustained 100% Window
455 cd/m²
358 cd/m²
Automatic Brightness Limiting (ABL)
0.024
0.062
HDR Brightness In Game Mode
6.2
Game Mode EOTF
Real Scene Highlight
361 cd/m²
Peak 2% Window
595 cd/m²
Peak 10% Window
988 cd/m²
Peak 25% Window
657 cd/m²
Peak 50% Window
491 cd/m²
Peak 100% Window
396 cd/m²
Sustained 2% Window
583 cd/m²
Sustained 10% Window
391 cd/m²
Sustained 25% Window
648 cd/m²
Sustained 50% Window
491 cd/m²
Sustained 100% Window
394 cd/m²
Automatic Brightness Limiting (ABL)
0.033
Gray Uniformity
6.7
6.8
50% Uniformity Picture
50% Std. Dev.
4.854%
2.841%
50% DSE
0.215%
0.237%
5% Uniformity Picture
5% Std. Dev.
0.618%
0.804%
5% DSE
0.112%
0.107%
Black Uniformity
6.3
6.9
Native Black Uniformity Picture
Native Std. Dev.
2.115%
1.595%
Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
0.964%
0.919%
Viewing Angle
6.9
7.4
Viewing Angle Video
Chroma Graph
Color Washout
27°
46°
Hue Graph
Color Shift
52°
36°
Lightness Graph
Brightness Loss
31°
49°
Black Level Raise
70°
70°
Gamma Shift
28°
26°
Reflections
8.6
8.4
Reflections Picture
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Semi-gloss
Semi-gloss
Total Reflections
2.8%
3.3%
Indirect Reflections
0.5%
1.7%
Calculated Direct Reflections
2.3%
1.5%
Pre Calibration
4.4
5.9
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE
6.52
5.24
Color dE
4.59
3.30
Gamma
2.06
2.16
Color Temperature
5,695 K
5,620 K
Picture Mode
Expert (Dark Room)
Movie
Color Temp Setting
Warm 2
Warm 2
Gamma Setting
2.2
2.2
Post Calibration
9.5
9.5
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE
0.40
0.27
Color dE
1.01
1.21
Gamma
2.19
2.21
Color Temperature
6,680 K
6,479 K
White Balance Calibration
22 point
20 point
Color Calibration
Yes
Yes
Auto-Calibration Function
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
9.9
9.5
4k Picture
8k Input
10
9.5
8k Picture
Pixels
Pixels Picture
Type
LED
LED
Sub-Type
IPS
VA
Color Gamut
8.0
8.0
Wide Color Gamut
Yes
Yes
Color Gamut DCI-P3 Picture
DCI P3 xy
88.14%
87.16%
DCI P3 uv
94.16%
92.98%
Color Gamut Rec.2020 Picture
Rec 2020 xy
65.01%
65.08%
Rec 2020 uv
71.89%
73.38%
EOTF
Color Volume
6.0
7.5
P3 Color Volume ITP Picture
Normalized DCI P3 Coverage ITP
66.5%
83.3%
10,000 cd/m² DCI P3 Coverage ITP
35.1%
48.5%
2020 Color Volume ITP Picture
Normalized Rec 2020 Coverage ITP
53.3%
66.7%
10,000 cd/m² Rec 2020 Coverage ITP
28.5%
38.0%
Gradient
8.2
7.9
Gradient Picture
Color Depth
10 Bit
10 Bit
Red (Std. Dev.)
0.114
0.124
Green (Std. Dev.)
0.121
0.130
Blue (Std. Dev.)
0.094
0.094
Gray (Std. Dev.)
0.085
0.098
Temporary Image Retention
9.9
10
Image Retention Picture
IR after 0 min recovery
0.04%
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
10
10
Permanent Burn-In Risk
No
No
Motion
Response Time
8.5
7.9
Motion Blur Picture
Response Time Chart
80% Response Time
2.8 ms
2.3 ms
100% Response Time
11.8 ms
17.3 ms
Flicker-Free
6.0
9.9
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
240 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
7.2
8.1
Frame Hold Time @ 24 fps
29.9 ms
24.4 ms
Frame Hold Time @ 60 fps
4.9 ms
0.0 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
0.0
9.4
Native Refresh Rate
120 Hz
120 Hz
Variable Refresh Rate
No
Yes
HDMI Forum VRR
No
Unknown
FreeSync
No
Yes
G-SYNC Compatible
No
No
4k VRR Maximum
N/A
120 Hz
4k VRR Minimum
No VRR support
< 20 Hz
1080p VRR Maximum
N/A
120 Hz
1080p VRR Minimum
No VRR support
< 20 Hz
1440p VRR Maximum
N/A
120 Hz
1440p VRR Minimum
No VRR support
< 20 Hz
VRR Supported Connectors
No VRR support
HDMI
Inputs
Input Lag
8.2
9.7
1080p @ 60Hz
18.5 ms
10.2 ms
1080p @ 60Hz Outside Game Mode
135.0 ms
79.0 ms
1440p @ 60Hz
18.6 ms
10.3 ms
4k @ 60Hz
18.5 ms
10.2 ms
4k @ 60Hz + 10-Bit HDR
20.6 ms
10.0 ms
4k @ 60Hz @ 4:4:4
18.3 ms
10.2 ms
4k @ 60Hz Outside Game Mode
135.0 ms
63.0 ms
4k @ 60Hz With Interpolation
139.1 ms
15.5 ms
8k @ 60Hz
22.4 ms
60.3 ms
1080p @ 120Hz
7.7 ms
5.7 ms
1440p @ 120Hz
7.7 ms
5.5 ms
4k @ 120Hz
7.9 ms
N/A
1080p with Variable Refresh Rate
N/A
6.0 ms
1440p with VRR
N/A
6.3 ms
4k with VRR
N/A
13.9 ms
8k with VRR
N/A
N/A
Auto Low Latency Mode (ALLM)
Yes
Yes
Supported Resolutions
10
10
Resolution
8k
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 (forced resolution required)
Yes (native support)
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
Yes (native support)
No
8k @ 30Hz or 24Hz
Yes
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
PS5, 4k @ 120Hz
Yes
PS5, 4k @ 60Hz + HDR
Yes
PS5, 1440p @ 120Hz
PS5 can't do 1440p
PS5, 1080p @ 120Hz
Yes
PS5, Variable Refresh Rate
PS5 can't do VRR yet
Xbox Series X, 4k @ 120Hz + HDR
Yes
Xbox Series X, 4k @ 120Hz
Yes
Xbox Series X, 4k @ 60Hz + HDR
Yes
Xbox Series X, 1440p @ 120Hz
Yes
Xbox Series X, 1080p @ 120Hz
Yes
Xbox Series X, Variable Refresh Rate
Yes
Inputs Specifications
HDR10
Yes
Yes
HDR10+
No
Yes
Dolby Vision
Yes
No
HLG
Yes
Yes
3D
No
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 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
No
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
2
Digital Optical Audio Out
1
1
Analog Audio Out 3.5mm
0
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
Yes
No
5.1 Dolby Digital via ARC
Yes
Yes
5.1 DTS via ARC
Yes
No
5.1 Dolby Digital via Optical
Yes
Yes
5.1 DTS via Optical
Yes
No
Sound Quality
Frequency Response
7.3
5.8
Frequency Response
Low-Frequency Extension
67.27 Hz
106.79 Hz
Std. Dev. @ 70
2.82 dB
4.49 dB
Std. Dev. @ 80
3.31 dB
5.86 dB
Std. Dev. @ Max
6.32 dB
7.42 dB
Max
89.9 dB SPL
90.0 dB SPL
Dynamic Range Compression
4.44 dB
5.32 dB
Distortion
7.2
7.2
Total Harmonic Distortion
Weighted THD @ 80
0.066
0.698
Weighted THD @ Max
0.481
3.716
IMD @ 80
2.45%
0.90%
IMD @ Max
6.45%
0.53%
Smart Features
Interface
8.5
8.0
Smart TV Picture
Smart OS
WebOS
Tizen
Version
4.7
2020
Ease of Use
Easy
Easy
Smoothness
Average
Very Smooth
Time Taken to Select YouTube
2 s
2 s
Time Taken to Change Backlight
5 s
7 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
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 TV Plus
Samsung SmartThings
TV Controls
Controls Picture
In The Box
In The Box Picture
Misc
Power Consumption
162 W
140 W
Power Consumption (Max)
305 W
412 W
Firmware
04.70.08
1115
Check Price
65"
65"
QN65Q800TAFXZA
Searching
Finding store75"
75SM9970PUA
Searching
Finding store75"
QN75Q800TAFXZA
Searching
Finding store82"
82"
QN82Q800TAFXZA
Searching
Finding store
LG SM9970 8k
Samsung Q800T 8k QLED
Comments
LG SM9970 8k vs Samsung Q800T 8k QLED: Main Discussion
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