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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Sound Quality
- Smart Features
- Comments
Hisense U9DG vs TCL 6 Series/R646 2021 QLED
Side-by-Side Comparison
Products
Hisense U9DG
TCL 6 Series/R646 2021 QLED
Tested using Methodology v1.8
Updated Apr 16, 2025 03:34 PM
SEE PRICE
Amazon.comTested using Methodology v1.11
Updated Apr 16, 2025 03:21 PM
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Amazon.com
Resolution4k
TypeLED
Sub-TypeIPS
Resolution4k
TypeLED
Sub-TypeVA
Variants
- 75U9DG (75")
- 55R646 (55")
- 65R646 (65")
- 75R646 (75")
Our Verdict
Hisense U9DG
TCL 6 Series/R646 2021 QLED
The TCL 6 Series/R646 2021 QLED and the Hisense U9DG each have their own strengths and weaknesses, so the best one for you depends on your usage. The TCL has much better motion handling and lower input lag, so it's better for gaming or watching sports. The Hisense has much better contrast and better local dimming, so it's a better choice for watching movies in a dark room.
Check Price
55"
55"
55R646
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65"
65R646
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75U9DG
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75R646
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Finding storeMain Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
8.5
8.0
480p Input
8.0
3.0
Viewing Angle
8.2
5.4
Contrast
9.8
8.9
SDR Brightness
7.5
9.0
Full Comparison
Design
Style
Design Picture
Curved
No
No
Accelerated Longevity Test
Uniformity Pictures
Month 26
50% Gray
Month 26
50% Gray
Longevity Graph
Stand
Stand Picture
Back
Back Picture
Wall Mount
VESA 600x400
VESA 300x300
Borders
Borders Picture
Borders
0.43" (1.1 cm)
0.35" (0.9 cm)
Thickness
Thickness Picture
Max Thickness
2.60" (6.6 cm)
3.66" (9.3 cm)
Build Quality
8.0
7.5
Build quality picture
Picture Quality
Contrast
9.8
8.9
Contrast Picture
Contrast
31,169 : 1
39,900 : 1
Native Contrast
24,775 : 1
7,778 : 1
Blooming
7.5
Blooming Photo
Local Dimming
9.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
Yes
Yes
Backlight
Full-Array
Full-Array
Lighting Zone Transitions
8.0
Preferred LD Video, Moving Object
Local Dimming
Yes
Yes
Backlight
Full-Array
Full-Array
Dimming Zones Count Of Tested TV
128
Local Dimming In Game Mode
9.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
Yes
Backlight
Full-Array
Contrast And Dark Details In Game Mode
8.5
Blooming Photo In Game Mode
Preferred LD Video, Moving Object In Game Mode
Game Transitions With VRR And Preferred LD
HDR Brightness
6.6
8.2
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
280 cd/m²
523 cd/m²
Yellow Skyscraper (~700 cd/m²)
296 cd/m²
377 cd/m²
Landscape Pool (~300 cd/m²)
112 cd/m²
240 cd/m²
Peak 2% Window
1,046 cd/m²
660 cd/m²
Peak 10% Window
992 cd/m²
1,051 cd/m²
Peak 25% Window
908 cd/m²
1,085 cd/m²
Peak 50% Window
679 cd/m²
872 cd/m²
Peak 100% Window
397 cd/m²
851 cd/m²
Sustained 2% Window
1,002 cd/m²
656 cd/m²
Sustained 10% Window
966 cd/m²
1,035 cd/m²
Sustained 25% Window
895 cd/m²
1,069 cd/m²
Sustained 50% Window
676 cd/m²
869 cd/m²
Sustained 100% Window
396 cd/m²
848 cd/m²
Automatic Brightness Limiting (ABL)
0.055
0.025
HDR Brightness In Game Mode
6.7
8.2
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
297 cd/m²
523 cd/m²
Yellow Skyscraper (~700 cd/m²)
298 cd/m²
393 cd/m²
Landscape Pool (~300 cd/m²)
120 cd/m²
232 cd/m²
Peak 2% Window
963 cd/m²
639 cd/m²
Peak 10% Window
948 cd/m²
1,038 cd/m²
Peak 25% Window
975 cd/m²
1,094 cd/m²
Peak 50% Window
662 cd/m²
886 cd/m²
Peak 100% Window
389 cd/m²
870 cd/m²
Sustained 2% Window
938 cd/m²
637 cd/m²
Sustained 10% Window
929 cd/m²
1,022 cd/m²
Sustained 25% Window
959 cd/m²
1,084 cd/m²
Sustained 50% Window
659 cd/m²
882 cd/m²
Sustained 100% Window
388 cd/m²
868 cd/m²
Automatic Brightness Limiting (ABL)
0.051
0.024
PQ EOTF Tracking
8.2
8.0
PQ EOTF Graph
600 Nit Tracking Delta
0.0115
0.0168
1000 Nit Tracking Delta
0.0116
0.0134
4000 Nit Tracking Delta
0.0116
0.0134
SDR Brightness
7.5
9.0
Real Scene Peak Brightness
331 cd/m²
800 cd/m²
Peak 2% Window
630 cd/m²
690 cd/m²
Peak 10% Window
555 cd/m²
1,027 cd/m²
Peak 25% Window
721 cd/m²
1,053 cd/m²
Peak 50% Window
553 cd/m²
836 cd/m²
Peak 100% Window
336 cd/m²
804 cd/m²
Sustained 2% Window
619 cd/m²
684 cd/m²
Sustained 10% Window
548 cd/m²
1,019 cd/m²
Sustained 25% Window
708 cd/m²
1,038 cd/m²
Sustained 50% Window
549 cd/m²
833 cd/m²
Sustained 100% Window
333 cd/m²
800 cd/m²
Automatic Brightness Limiting (ABL)
0.040
0.023
Color Gamut
8.7
8.3
Wide Color Gamut
Yes
Yes
Color Gamut DCI-P3 Picture
DCI P3 xy
97.76%
91.53%
DCI P3 uv
97.39%
96.50%
Color Gamut Rec.2020 Picture
Rec 2020 xy
73.83%
69.61%
Rec 2020 uv
77.95%
74.75%
Color Volume
8.6
7.9
P3 Color Volume ITP Picture
1,000 cd/m² DCI P3 Coverage ITP
78.2%
75.4%
2020 Color Volume ITP Picture
10,000 cd/m² Rec 2020 Coverage ITP
42.3%
34.5%
White Luminance
994 cd/m²
668 cd/m²
Red Luminance
204 cd/m²
160 cd/m²
Green Luminance
650 cd/m²
450 cd/m²
Blue Luminance
87 cd/m²
54 cd/m²
Cyan Luminance
706 cd/m²
501 cd/m²
Magenta Luminance
269 cd/m²
207 cd/m²
Yellow Luminance
884 cd/m²
616 cd/m²
Pre Calibration
8.1
7.5
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE
2.72
3.67
Color dE
1.82
2.51
Gamma
2.16
2.30
Color Temperature
7,038 K
6,239 K
Picture Mode
Theater Night
Movie
Color Temp Setting
Low
Warm
Gamma Setting
2.2
2.2
Post Calibration
9.3
9.4
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE
0.98
0.26
Color dE
1.06
1.46
Gamma
2.18
2.20
Color Temperature
6,489 K
6,512 K
White Balance Calibration
20 point
20 point
Color Calibration
Yes
No
Gray Uniformity
7.9
7.8
50% Uniformity Picture
50% Std. Dev.
2.752%
2.499%
50% DSE
0.169%
0.165%
5% Uniformity Picture
5% Std. Dev.
0.311%
0.983%
5% DSE
0.082%
0.102%
Black Uniformity
10
9.1
Black Uniformity Picture With Preferred Local Dimming
Std. Dev.
0.246%
0.471%
Native Black Uniformity Picture
Native Std. Dev.
0.215%
1.143%
Viewing Angle
8.2
5.4
Viewing Angle Video
Chroma Graph
Color Washout
38°
25°
Hue Graph
Color Shift
70°
33°
Lightness Graph
Brightness Loss
47°
30°
Black Level Raise
70°
13°
Gamma Shift
45°
21°
Reflections
8.7
8.5
Reflections Picture
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Semi-gloss
Semi-gloss
Total Reflections
2.6%
3.1%
Indirect Reflections
0.3%
0.6%
Calculated Direct Reflections
2.2%
2.5%
720p Input
8.0
720p Picture
1080p Input
9.0
1080p Picture
HDR Native Gradient
7.0
8.5
HDR Gradient Picture
100% Black to 50% Gray
6.0
50% Gray to 100% White
10
100% Black to 50% Red
8.0
50% Red to 100% Red
10
100% Black to 50% Green
8.0
50% Green to 100% Green
8.0
100% Black to 50% Blue
8.0
50% Blue to 100% Blue
10
Color Depth
10 Bit
Red (Std. Dev.)
0.137
Green (Std. Dev.)
0.141
Blue (Std. Dev.)
0.128
Gray (Std. Dev.)
0.158
4k Input
10
4k Picture
Low-Quality Content Smoothing
8.1
Low-Quality Content Smoothing Picture
Smoothing
9.0
Detail Preservation
6.0
Upscaling: Sharpness Processing
8.0
3.0
Sharpness Picture - 480p
8k Input
0.0
8k Picture
Pixels
Pixels Picture
Subpixel Layout
RGB
BGR
Type
LED
LED
Sub-Type
IPS
VA
Temporary Image Retention
10
Image Retention Picture
IR after 0 min recovery
0.00%
IR after 2 min recovery
0.00%
IR after 4 min recovery
0.00%
IR after 6 min recovery
0.00%
IR after 8 min recovery
0.00%
IR after 10 min recovery
0.00%
Permanent Burn-In Risk
10
Permanent Burn-In Risk
No
Motion
Response Time
6.2
8.4
Motion Blur Picture
Response Time Chart
80% Response Time
8.0 ms
3.9 ms
100% Response Time
16.8 ms
11.1 ms
Flicker-Free
7.9
9.9
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
480 Hz
960 Hz
Black Frame Insertion (BFI)
BFI Picture
BFI Frequency Picture
Optional BFI
Yes
Yes
Min Flicker For 60 fps
60 Hz
120 Hz
60Hz For 60 fps
Yes
No
120Hz For 120 fps
No
Yes
Min Flicker for 60 fps in Game Mode
60 Hz
120 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
8.0
7.0
Frame Hold Time @ 24 fps
24.9 ms
30.6 ms
Frame Hold Time @ 60 fps
0.0 ms
5.6 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
7.7
Native Refresh Rate
120 Hz
120 Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Yes
Yes
FreeSync
Yes
Yes
G-SYNC Compatible
Yes
No
4k VRR Maximum
120 Hz
120 Hz
4k VRR Minimum
< 20 Hz
48 Hz
1080p VRR Maximum
120 Hz
120 Hz
1080p VRR Minimum
< 20 Hz
48 Hz
1440p VRR Maximum
120 Hz
120 Hz
1440p VRR Minimum
< 20 Hz
48 Hz
VRR + Local Dimming
Yes
VRR Supported Connectors
HDMI
Inputs
Input Lag
7.9
9.4
1080p @ 60Hz
26.9 ms
14.2 ms
1080p @ 60Hz Outside Game Mode
157.4 ms
138.8 ms
1080p @ 120Hz
N/A
5.8 ms
1080p @ 144Hz
N/A
N/A
1440p @ 60Hz
26.8 ms
14.2 ms
1440p @ 120Hz
N/A
5.8 ms
1440p @ 144Hz
N/A
N/A
4k @ 60Hz
33.2 ms
14.4 ms
4k @ 60Hz + 10-Bit HDR
33.3 ms
13.9 ms
4k @ 60Hz @ 4:4:4
32.7 ms
14.2 ms
4k @ 60Hz Outside Game Mode
152.9 ms
138.6 ms
4k @ 60Hz With Interpolation
138.8 ms
131.9 ms
4k @ 120Hz
N/A
5.8 ms
4k @ 144Hz
N/A
N/A
8k @ 60Hz
N/A
N/A
Supported Resolutions
7.1
9.3
Resolution
4k
4k
480p @ 59.94Hz (Widescreen)
Yes
720p @ 59.94Hz
Yes
1080p @ 60Hz @ 4:4:4
Yes
Yes
1080p @ 120Hz
No
Yes
1080p @ 144Hz
No
No
1440p @ 60Hz
Yes (forced resolution required)
Yes (forced resolution required)
1440p @ 120Hz
No
Yes
1440p @ 144Hz
No
No
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
No
Yes
4k @ 120Hz @ 4:4:4
No
No
4k @ 144Hz
No
No
8k @ 30Hz or 24Hz
No
No
8k @ 60Hz
No
No
PS5 Compatibility
PS5 Screenshot
Auto Low Latency Mode (ALLM)
Yes
Yes
4k @ 120Hz
No
Yes
1440p @ 120Hz
No
Yes
1080p @ 120Hz
No
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+
Yes
Yes
Dolby Vision
Yes
Yes
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 3,4)
Yes (HDMI 1,2)
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
Yes (1)
No
Variable Analog Audio Out
Yes
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
1
1
Analog Audio Out RCA
0
0
Component In
0
0
Composite In
1 (incl. adapter)
1 (adapter required, not incl.)
Tuner (Cable/Ant)
1
1
Ethernet
1
1
DisplayPort
0
0
IR In
0
0
SD/SDHC
0
Audio Passthrough
ARC/eARC Port
Yes
eARC
eARC: Dolby Atmos Over Dolby Digital Plus
Yes
Yes
eARC: Dolby Digital Plus 7.1
Yes
eARC: LPCM 7.1 Over Dolby MAT
Yes
eARC: Dolby TrueHD 7.1
Yes
ARC
Yes (HDMI 3)
eARC: DTS:X Over DTS-HD MA
Yes
Yes
eARC: DTS-HD Master Audio 7.1
Yes
eARC: LPCM Channels (Bitstream)
2.0
ARC: Dolby Digital 5.1
Yes
Yes
ARC: DTS 5.1
Yes
Yes
Optical: Dolby Digital 5.1
Yes
Yes
Optical: DTS 5.1
Yes
Yes
Sound Quality
Frequency Response
6.5
7.4
Frequency Response
Low-Frequency Extension
95.14 Hz
80.00 Hz
Std. Dev. @ 70
4.71 dB
4.97 dB
Std. Dev. @ 80
4.72 dB
4.80 dB
Std. Dev. @ Max
6.50 dB
4.39 dB
Max
91.0 dB SPL
95.1 dB SPL
Dynamic Range Compression
4.24 dB
1.87 dB
Distortion
6.7
8.2
Total Harmonic Distortion
Weighted THD @ 80
0.179
0.032
Weighted THD @ Max
0.867
0.385
IMD @ 80
3.12%
0.45%
IMD @ Max
12.34%
1.23%
Smart Features
Interface
8.0
8.0
Smart TV Picture
Smart OS
Android TV
Google TV
Version
10
11
Ease of Use
Average
Average
Smoothness
Very Smooth
Very Smooth
Time Taken to Select YouTube
2 s
2 s
Time Taken to Change Backlight
3 s
2 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
Yes
No
Apps and Features
9.0
9.0
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
8.0
7.0
Remote Picture
Size
Medium
Small
Voice Control
Many Features
Many Features
CEC Menu Control
Yes
Yes
Other Smart Features
No
No
Remote App
Hisense RemoteNOW
Android TV
TV Controls
Controls Picture
In The Box
In The Box Picture
Misc
Power Consumption
124 W
54 W
Power Consumption (Max)
261 W
154 W
Firmware
V0000.01.00M.L0721
V8-T615T02-LF1V023
Check Price
55"
55"
55R646
Searching
Finding store65"
65"
65R646
Searching
Finding store75"
75U9DG
Searching
Finding store75"
75R646
Searching
Finding store
Hisense U9DG
TCL 6 Series/R646 2021 QLED
Comments
Hisense U9DG vs TCL 6 Series/R646 2021 QLED: Main Discussion
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