Products
TCL Q550G
TCL S551G
Tested using Methodology v1.11
Updated Apr 02, 2025 04:16 PM
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Tested using Methodology v2.0.1
Updated Sep 24, 2025 08:56 PM
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Resolution4k
Native Refresh Rate
60 Hz
TypeLED
Sub-Type
VA
Dolby Vision
Yes
Screen Finish
Semi-gloss
Resolution4k
Native Refresh Rate
60Hz
TypeLED
Sub-Type
VA
Dolby Vision
Yes
Screen Finish
Glossy
Our Verdict
TCL Q5/Q550G QLED
TCL S551G
The TCL Q550G and the TCL S551G are similar TVs, but the Q550G is better overall. Thanks to its superior contrast, the Q550G displays deeper blacks, delivering a better dark room experience. Highlights pop out more in HDR content on the Q550G due to its higher HDR peak brightness, and its superior SDR brightness means it's more suitable for rooms with the lights on. Additionally, the Q550G has a slight edge with upscaling low-resolution content.
Variants
- 43Q550G (43")
- 50Q550G (50")
- 55Q550G (55")
- 65Q550G (65")
- 43S551G (43")
- 50S551G (50")
- 55S551G (55")
- 65S551G (65")
- 75S551G (75")
- 85S551G (85")
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43"
43Q550G
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43"
43S551G
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50"
50Q550G
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50"
50S551G
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55"
55Q550G
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55"
55S551G
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65"
65Q550G
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65"
65S551G
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75"
75"
75S551G
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85"
85"
85S551G
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.2
5.9
HDR Brightness
7.2
4.5
Blooming
10
0.0
Contrast
6.9
4.7
SDR Brightness
7.8
5.8
Full Comparison
Brightness
HDR Brightness
7.2
4.5
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
381 cd/m²
304 cd/m²
Yellow Skyscraper (~700 cd/m²)
357 cd/m²
217 cd/m²
Landscape Pool (~300 cd/m²)
276 cd/m²
159 cd/m²
Peak 2% Window
424 cd/m²
355 cd/m²
Peak 10% Window
425 cd/m²
355 cd/m²
Peak 25% Window
424 cd/m²
355 cd/m²
Peak 50% Window
425 cd/m²
355 cd/m²
Peak 100% Window
425 cd/m²
355 cd/m²
Sustained 2% Window
423 cd/m²
355 cd/m²
Sustained 10% Window
424 cd/m²
355 cd/m²
Sustained 25% Window
424 cd/m²
355 cd/m²
Sustained 50% Window
424 cd/m²
355 cd/m²
Sustained 100% Window
424 cd/m²
355 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
HDR Brightness In Game Mode
7.0
4.5
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
378 cd/m²
306 cd/m²
Yellow Skyscraper (~700 cd/m²)
333 cd/m²
217 cd/m²
Landscape Pool (~300 cd/m²)
250 cd/m²
161 cd/m²
Peak 2% Window
421 cd/m²
355 cd/m²
Peak 10% Window
422 cd/m²
356 cd/m²
Peak 25% Window
422 cd/m²
356 cd/m²
Peak 50% Window
422 cd/m²
356 cd/m²
Peak 100% Window
423 cd/m²
355 cd/m²
Sustained 2% Window
420 cd/m²
355 cd/m²
Sustained 10% Window
421 cd/m²
356 cd/m²
Sustained 25% Window
422 cd/m²
356 cd/m²
Sustained 50% Window
422 cd/m²
355 cd/m²
Sustained 100% Window
422 cd/m²
355 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
SDR Brightness
7.8
5.8
Real Scene Peak Brightness
373 cd/m²
310 cd/m²
Peak 2% Window
425 cd/m²
358 cd/m²
Peak 10% Window
423 cd/m²
353 cd/m²
Peak 25% Window
423 cd/m²
350 cd/m²
Peak 50% Window
422 cd/m²
347 cd/m²
Peak 100% Window
422 cd/m²
346 cd/m²
Sustained 2% Window
423 cd/m²
356 cd/m²
Sustained 10% Window
422 cd/m²
352 cd/m²
Sustained 25% Window
422 cd/m²
348 cd/m²
Sustained 50% Window
422 cd/m²
347 cd/m²
Sustained 100% Window
421 cd/m²
345 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.002
Picture Quality
Contrast
6.9
4.7
Contrast Picture
Contrast
7,696 : 1
5,083 : 1
Native Contrast
7,696 : 1
5,083 : 1
Blooming
10
0.0
Blooming Photo
Lighting Zone Transitions
10
10
Preferred LD Video, Moving Object
Local Dimming
No
No
Backlight
Direct
Direct
Dimming Zones Count Of Tested TV
N/A
N/A
Contrast And Dark Details In Game Mode
8.0
5.0
Blooming Photo In Game Mode
Preferred LD Video, Moving Object In Game Mode
Game Transitions With VRR And Preferred LD
HDR Brightness
7.2
4.5
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
381 cd/m²
304 cd/m²
Yellow Skyscraper (~700 cd/m²)
357 cd/m²
217 cd/m²
Landscape Pool (~300 cd/m²)
276 cd/m²
159 cd/m²
Peak 2% Window
424 cd/m²
355 cd/m²
Peak 10% Window
425 cd/m²
355 cd/m²
Peak 25% Window
424 cd/m²
355 cd/m²
Peak 50% Window
425 cd/m²
355 cd/m²
Peak 100% Window
425 cd/m²
355 cd/m²
Sustained 2% Window
423 cd/m²
355 cd/m²
Sustained 10% Window
424 cd/m²
355 cd/m²
Sustained 25% Window
424 cd/m²
355 cd/m²
Sustained 50% Window
424 cd/m²
355 cd/m²
Sustained 100% Window
424 cd/m²
355 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
HDR Brightness In Game Mode
7.0
4.5
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
378 cd/m²
306 cd/m²
Yellow Skyscraper (~700 cd/m²)
333 cd/m²
217 cd/m²
Landscape Pool (~300 cd/m²)
250 cd/m²
161 cd/m²
Peak 2% Window
421 cd/m²
355 cd/m²
Peak 10% Window
422 cd/m²
356 cd/m²
Peak 25% Window
422 cd/m²
356 cd/m²
Peak 50% Window
422 cd/m²
356 cd/m²
Peak 100% Window
423 cd/m²
355 cd/m²
Sustained 2% Window
420 cd/m²
355 cd/m²
Sustained 10% Window
421 cd/m²
356 cd/m²
Sustained 25% Window
422 cd/m²
356 cd/m²
Sustained 50% Window
422 cd/m²
355 cd/m²
Sustained 100% Window
422 cd/m²
355 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
PQ EOTF Tracking
9.0
7.5
PQ EOTF Graph
600 Nit Tracking Delta
0.0065
0.0067
1000 Nit Tracking Delta
0.0065
0.0067
4000 Nit Tracking Delta
0.0061
0.0067
SDR Brightness
7.8
5.8
Real Scene Peak Brightness
373 cd/m²
310 cd/m²
Peak 2% Window
425 cd/m²
358 cd/m²
Peak 10% Window
423 cd/m²
353 cd/m²
Peak 25% Window
423 cd/m²
350 cd/m²
Peak 50% Window
422 cd/m²
347 cd/m²
Peak 100% Window
422 cd/m²
346 cd/m²
Sustained 2% Window
423 cd/m²
356 cd/m²
Sustained 10% Window
422 cd/m²
352 cd/m²
Sustained 25% Window
422 cd/m²
348 cd/m²
Sustained 50% Window
422 cd/m²
347 cd/m²
Sustained 100% Window
421 cd/m²
345 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.002
Color Gamut
7.9
Wide Color Gamut
Yes
Color Gamut DCI-P3 Picture
DCI P3 xy
87.88%
DCI P3 uv
93.66%
Color Gamut Rec.2020 Picture
Rec 2020 xy
64.14%
Rec 2020 uv
71.05%
Color Volume
7.2
6.3
P3 Color Volume ITP Picture
1,000 cd/m² DCI P3 Coverage ITP
61.6%
57.8%
2020 Color Volume ITP Picture
10,000 cd/m² Rec 2020 Coverage ITP
27.4%
26.2%
White Luminance
427 cd/m²
355 cd/m²
Red Luminance
90 cd/m²
75 cd/m²
Green Luminance
308 cd/m²
253 cd/m²
Blue Luminance
30 cd/m²
26 cd/m²
Cyan Luminance
338 cd/m²
279 cd/m²
Magenta Luminance
120 cd/m²
101 cd/m²
Yellow Luminance
392 cd/m²
327 cd/m²
Pre Calibration
5.1
6.1
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE
7.01
5.82
Color dE
3.48
2.79
Gamma
2.16
2.15
Color Temperature
6,272 K
6,199 K
Picture Mode
Movie
Movie
Color Temp Setting
Warm
Warm -5
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
0.44
0.15
Color dE
0.80
1.35
Gamma
2.20
2.20
Color Temperature
6,487 K
6,509 K
White Balance Calibration
20 point
20 point
Color Calibration
Yes
Yes
Gray Uniformity
7.3
6.0
50% Uniformity Picture
50% Std. Dev.
4.513%
4.153%
50% DSE
0.184%
0.221%
5% Uniformity Picture
5% Std. Dev.
0.635%
0.732%
5% DSE
0.095%
0.079%
Black Uniformity
9.7
9.9
Black Uniformity Picture With Preferred Local Dimming
Std. Dev.
N/A
N/A
Native Black Uniformity Picture
Native Std. Dev.
0.487%
0.284%
Viewing Angle
5.8
6.6
Viewing Angle Video
Chroma Graph
Color Washout
26°
33°
Hue Graph
Color Shift
58°
54°
Lightness Graph
Brightness Loss
30°
39°
Black Level Raise
18°
18°
Gamma Shift
16°
16°
Reflections
7.1
6.3
Reflections Picture
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Semi-gloss
Glossy
Total Reflections
5.8%
Indirect Reflections
0.9%
Calculated Direct Reflections
4.9%
HDR Native Gradient
6.5
6.8
HDR Gradient Picture
100% Black to 50% Gray
4.0
6.0
50% Gray to 100% White
8.0
8.0
100% Black to 50% Red
6.0
6.0
50% Red to 100% Red
8.0
8.0
100% Black to 50% Green
6.0
4.0
50% Green to 100% Green
6.0
8.0
100% Black to 50% Blue
6.0
6.0
50% Blue to 100% Blue
8.0
8.0
Low-Quality Content Smoothing
5.8
6.0
Low-Quality Content Smoothing Picture
Smoothing
5.0
5.5
Detail Preservation
7.5
7.0
Upscaling: Sharpness Processing
6.0
5.5
Sharpness Picture - 480p
Pixels
Pixels Picture
Subpixel Layout
BGR
BGR
Type
LED
LED
Sub-Type
VA
VA
Black Level
Contrast
6.9
4.7
Contrast Picture
Contrast
7,696 : 1
5,083 : 1
Native Contrast
7,696 : 1
5,083 : 1
Lighting Zone Precision
10
0.0
Lighting Zone Precision Picture
Lighting Zone Transitions
10
10
Preferred LD Video, Moving Object
Local Dimming
No
No
Backlight
Direct
Direct
Dimming Zone Count Of The Tested TV
N/A
N/A
Contrast And Dark Details In Game Mode
8.0
5.0
Lighting Zone Precision Photo In Game Mode
Preferred LD Video, Moving Object In Game Mode
Game Transitions With VRR And Preferred LD
Black Uniformity
9.7
9.9
Black Uniformity Picture With Preferred Local Dimming
Std. Dev.
N/A
N/A
Native Black Uniformity Picture
Native Std. Dev.
0.487%
0.284%
Motion
Response Time
7.8
7.1
Motion Blur Picture
Response Time Chart
80% Response Time
5.5 ms
100% Response Time
12.9 ms
Flicker-Free
2.1
0.0
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
150 Hz
150 Hz
Black Frame Insertion (BFI)
BFI Picture
BFI Frequency Picture
Optional BFI
No
No
Min Flicker For 60 fps
150 Hz
150 Hz
60Hz For 60 fps
No
No
120Hz For 120 fps
N/A
No
Min Flicker for 60 fps in Game Mode
150 Hz
150 Hz
Motion Interpolation
Motion Interpolation (30 fps) Picture
Motion Interpolation (30 fps)
Yes
Yes
Motion Interpolation (60 fps) Picture
Motion Interpolation (60 fps)
No
No
Stutter
7.3
7.3
Frame Hold Time @ 24 fps
28.8 ms
31.3 ms
Frame Hold Time @ 60 fps
3.8 ms
6.3 ms
24p Judder
7.8
10
Judder-Free 24p
Yes
Yes
Judder-Free 24p via 60p
No
Yes
Judder-Free 24p via 60i
No
Yes
Judder-Free 24p via Native Apps
Yes
Yes
Variable Refresh Rate
8.2
6.4
Native Refresh Rate
60 Hz
60Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Yes
Yes
FreeSync
Yes
Yes
G-SYNC Compatible
Yes
Yes
4k VRR Maximum
60 Hz
60 Hz
4k VRR Minimum
48 Hz
48 Hz
1080p VRR Maximum
120 Hz
120 Hz
1080p VRR Minimum
< 20 Hz
< 20 Hz
1440p VRR Maximum
120 Hz
1440p VRR Minimum
< 20 Hz
VRR + Local Dimming
No Local Dimming
No Local Dimming
Color
SDR Color Volume
6.7
DCI-P3 Gamut Rings
CIELAB DCI-P3 Coverage
83.72%
BT.2020 Gamut Rings
CIELAB BT.2020 Coverage
56.80%
HDR Color Volume
7.2
6.3
P3 Color Volume ITP Picture
1,000 cd/m² DCI P3 Coverage ITP
61.6%
57.8%
2020 Color Volume ITP Picture
10,000 cd/m² BT.2020 Coverage ITP
27.4%
26.2%
White Luminance
427 cd/m²
355 cd/m²
Red Luminance
90 cd/m²
75 cd/m²
Green Luminance
308 cd/m²
253 cd/m²
Blue Luminance
30 cd/m²
26 cd/m²
Cyan Luminance
338 cd/m²
279 cd/m²
Magenta Luminance
120 cd/m²
101 cd/m²
Yellow Luminance
392 cd/m²
327 cd/m²
SDR Pre-Calibration Color Accuracy
5.1
6.1
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE 2000
7.01
5.82
Color dE 2000
3.48
2.79
Gamma
2.16
2.15
Color Temperature
6,272 K
6,199 K
Picture Mode
Movie
Movie
Color Temp Setting
Warm
Warm -5
Gamma Setting
2.2
2.2
SDR Post-Calibration Color Accuracy
9.5
9.5
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE 2000
0.44
0.15
Color dE 2000
0.80
1.35
Gamma
2.20
2.20
Color Temperature
6,487 K
6,509 K
White Balance Calibration
20 point
20 point
Color Calibration
Yes
Yes
HDR Pre-Calibration Color Accuracy
7.1
HDR Pre White Balance Picture
HDR Pre Color Picture
White Balance dE ITP
9.70
Color dE ITP
8.9
Color Temperature
7,046 K
Picture Mode
Movie
HDR Post-Calibration Color Accuracy
9.1
HDR Post White Balance Picture
HDR Post Color Picture
White Balance dE ITP
5.70
Color dE ITP
5.30
Color Temperature
6,540 K
Processing
PQ EOTF Tracking
9.0
7.5
PQ EOTF Graph
600 Nit Tracking Delta
0.0065
0.0067
1000 Nit Tracking Delta
0.0065
0.0067
4000 Nit Tracking Delta
0.0061
0.0067
Low-Quality Content Smoothing
5.8
6.0
Low-Quality Content Smoothing Picture
Smoothing
5.0
5.5
Detail Preservation
7.5
7.0
Upscaling: Sharpness Processing
6.0
5.5
Sharpness Picture - 480p
HDR Native Gradient
6.5
6.8
HDR Gradient Picture
100% Black To 50% Gray
4.0
6.0
50% Gray To 100% White
8.0
8.0
100% Black To 50% Red
6.0
6.0
50% Red To 100% Red
8.0
8.0
100% Black To 50% Green
6.0
4.0
50% Green To 100% Green
6.0
8.0
100% Black To 50% Blue
6.0
6.0
50% Blue To 100% Blue
8.0
8.0
Game Mode Responsiveness
Input Lag
9.7
8.2
1080p @ 60Hz
10.9 ms
10.5 ms
1080p @ 60Hz Outside Game Mode
111.7 ms
161.7 ms
1080p @ 120Hz
6.5 ms
6.6 ms
1080p @ Max Refresh Rate
N/A
6.6 ms
4k @ 60Hz
10.3 ms
10.5 ms
4k @ 60Hz @ 4:4:4
10.4 ms
10.5 ms
4k @ 60Hz Outside Game Mode
94.6 ms
160.9 ms
4k @ 60Hz With Interpolation
94.7 ms
160.8 ms
4k @ 120Hz
N/A
N/A
4k @ Max Refresh Rate
N/A
10.5 ms
8k @ 60Hz
N/A
N/A
Supported Resolutions
8.2
7.2
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
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
No
No
4k @ 120Hz @ 4:4:4
No
No
4k Maximum Refresh Rate
60 Hz
8k @ 30Hz Or 24Hz
No
No
8k @ 60Hz
No
No
Variable Refresh Rate
8.2
6.4
Native Refresh Rate
60 Hz
60Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Yes
Yes
FreeSync
Yes
Yes
G-SYNC Compatible
Yes
Yes
4k VRR Maximum
60 Hz
60 Hz
4k VRR Minimum
48 Hz
48 Hz
1080p VRR Maximum
120 Hz
120 Hz
1080p VRR Minimum
< 20 Hz
< 20 Hz
VRR + Local Dimming
No Local Dimming
No Local Dimming
CAD In Game Mode @ Max Refresh Rate
6.2
Pursuit Photo Max Refresh
CAD Heatmap Max Refresh
Transition At Max Refresh
0 to 31
Avg. CAD
282
Best 10% CAD
82
Worst 10% CAD
490
CAD In Game Mode @ 120Hz
0.0
Pursuit Photo 120Hz
CAD Heatmap 120Hz
Transition At 120Hz
Avg. CAD
N/A
Best 10% CAD
N/A
Worst 10% CAD
N/A
CAD In Game Mode @ 60Hz
6.2
Pursuit Photo 60Hz
CAD Heatmap 60Hz
Transition 60Hz
0 to 31
Avg. CAD
282
Best 10% CAD
82
Worst 10% CAD
490
PS5 Compatibility
PS5 Screenshot
Auto Low Latency Mode (ALLM)
Yes
Yes
4k @ 120Hz
No
No
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
No
No
1440p @ 120Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
HDR
Yes
Yes
VRR
Yes
Yes
Motion Handling
Stutter
7.3
7.3
Frame Hold Time @ 24 fps
28.8 ms
31.3 ms
Frame Hold Time @ 60 fps
3.8 ms
6.3 ms
24p Judder
7.8
10
Judder-Free 24p
Yes
Yes
Judder-Free 24p via 60p
No
Yes
Judder-Free 24p via 60i
No
Yes
Judder-Free 24p via Native Apps
Yes
Yes
Response Time
7.8
7.1
Pursuit Photo 60Hz
Response Time Heatmap 60Hz
Transition At 60Hz
0 to 31
First Response Time
10.4 ms
Total Response Time
11.9 ms
Worst 10% Response Time
21.2 ms
Flicker
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
150 Hz
150 Hz
Black Frame Insertion (BFI)
BFI Picture
BFI Frequency Picture
Optional BFI
No
No
Min Flicker For 60 fps
150 Hz
150 Hz
60Hz For 60 fps
No
No
120Hz For 120 fps
N/A
No
Min Flicker For 60 fps In Game Mode
150 Hz
150 Hz
Motion Interpolation
Motion Interpolation (30 fps) Picture
Motion Interpolation (30 fps)
Yes
Yes
Motion Interpolation (60 fps) Picture
Motion Interpolation (60 fps)
No
No
Reflections
Direct Reflections
7.1
6.3
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
46.9%
Screen Finish
Semi-gloss
Glossy
Ambient Black Level Raise
9.1
Black Level Raise Picture
Bright Room Black Level Raise Graph
Black Luminance @ 0 lx
0.06 cd/m²
Black Luminance @ 1000 lx
0.38 cd/m²
Total Reflected Light
6.2
Bright Room Off Picture
Ring Picture Total Reflection
Total Reflected Light Intensity
24,823% ⋅ pixel
Diffraction Artifacts
Yes
Ambient Color Saturation
6.6
Bright Room Color Volume Graph
Low-Luminance Colors @ 1000 lx
56.56%
Mid-Luminance Colors @ 1000 lx
57.25%
High-Luminance Colors @ 1000 lx
46.24%
Panel
Viewing Angle
5.8
6.6
Viewing Angle Video
Chroma Graph
Color Washout
26°
33°
Hue Graph
Color Shift
58°
54°
Lightness Graph
Brightness Loss
30°
39°
Black Level Raise
18°
18°
Gamma Shift
16°
16°
Gray Uniformity
7.3
6.0
50% Uniformity Picture
50% Std. Dev.
4.513%
4.153%
50% DSE
0.184%
0.221%
5% Uniformity Picture
5% Std. Dev.
0.635%
0.732%
5% DSE
0.095%
0.079%
Panel Technology
Spectral Power Distribution
Pixels Picture
Type
LED
LED
Sub-Type
VA
VA
Subpixel Layout
BGR
BGR
Inputs
Input Lag
9.7
8.2
1080p @ 60Hz
10.9 ms
10.5 ms
1080p @ 60Hz Outside Game Mode
111.7 ms
161.7 ms
1080p @ 120Hz
6.5 ms
6.6 ms
1080p @ 144Hz
N/A
6.6 ms
1440p @ 60Hz
10.7 ms
1440p @ 120Hz
6.3 ms
1440p @ 144Hz
N/A
4k @ 60Hz
10.3 ms
10.5 ms
4k @ 60Hz + 10-Bit HDR
10.2 ms
4k @ 60Hz @ 4:4:4
10.4 ms
10.5 ms
4k @ 60Hz Outside Game Mode
94.6 ms
160.9 ms
4k @ 60Hz With Interpolation
94.7 ms
160.8 ms
4k @ 120Hz
N/A
N/A
4k @ 144Hz
N/A
10.5 ms
8k @ 60Hz
N/A
N/A
Supported Resolutions
8.2
7.2
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 @ 144Hz
No
1440p @ 60Hz
Yes (forced resolution required)
1440p @ 120Hz
Yes
1440p @ 144Hz
No
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
No
No
4k @ 120Hz @ 4:4:4
No
No
4k @ 144Hz
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
No
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
No
No
1440p @ 120Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
HDR
Yes
Yes
VRR
Yes
Yes
Input Specifications
Side Inputs Picture
Rear Inputs Picture
HDR10
Yes
Yes
HDMI
3
3 (3x HDMI 2.0)
HDR10+
Yes
Yes
Dolby Vision
Yes
Yes
HDMI 2.1 Rated Speed
No
No HDMI 2.1
HLG
Yes
Yes
ATSC Tuner
1.0
1.0
USB Ports
1
1
HDMI 2.0 Full Bandwidth
Yes (HDMI 1,2,3)
USB 3.0
Yes (1)
No
Audio Out 3.5mm
1
1
Wi-Fi
Yes (2.4 GHz, 5 GHz)
Yes (2.4 GHz, 5 GHz)
Ethernet Speed
1
100 Mbps
CEC
Yes
Composite In
1 (adapter required, not incl.)
1 (Adapter Required, Not Incl.)
HDCP 2.2
Yes (HDMI 1,2,3)
Digital Optical Audio Out
1
1
Variable Analog Audio Out
Yes
Input Photos
Side Inputs Picture
Rear Inputs Picture
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
No
Yes
eARC: DTS-HD Master Audio 7.1
No
Yes
eARC: LPCM Channels (Bitstream)
2.0
7.1
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
Total Inputs
HDMI
3
3 (3x HDMI 2.0)
USB
1
1
Digital Optical Audio Out
1
1
Analog Audio Out 3.5mm
1
1
Analog Audio Out RCA
0
Component In
0
Composite In
1 (adapter required, not incl.)
1 (Adapter Required, Not Incl.)
Tuner (Cable/Ant)
1
Ethernet
1
100 Mbps
DisplayPort
0
IR In
0
HDR Format Support
HDR10
Yes
Yes
HDR10+
Yes
Yes
Dolby Vision
Yes
Yes
HLG
Yes
Yes
Design
Style
Design Picture
Curved
No
No
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Stand
Stand Picture
Back
Back Picture
Wall Mount
VESA 300x300
VESA 400x400
Borders
Borders Picture
Borders
0.31" (0.8 cm)
0.33" (0.9 cm)
Thickness
Thickness Picture
Max Thickness
3.19" (8.1 cm)
2.60" (6.6 cm)
Build Quality
6.5
7.0
Build quality picture
Smart Features
Interface
Smart TV Picture
Smart OS
Google TV
Google TV
Version
11
12
Ease of Use
Average
Smoothness
Very Smooth
Time Taken to Select YouTube
1 s
Time Taken to Change Backlight
2 s
Advanced Options
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
9.0
Apps Picture
App Selection
Great
App Smoothness
Very Smooth
Cast Capable
Yes
USB Drive Playback
Yes
USB Drive HDR Playback
Yes
HDR in Netflix
Yes
HDR in YouTube
Yes
Remote
Remote Picture
Size
Medium
Voice Control
Many Features
Yes
CEC Menu Control
Yes
Other Smart Features
No
Remote App
Android TV
TV Controls
Controls Picture
Mute Switch
No
In The Box
In The Box Picture
Misc
Power Consumption
49 W
54 W
Power Consumption (Max)
185 W
188 W
Firmware
V8-R51MT08-LF1V058.021060
V8-R75PT01-LF1V174
Sound Quality
Frequency Response
5.1
6.3
Frequency Response
Low-Frequency Extension
151.02 Hz
134.54 Hz
Std. Dev. @ 70
5.87 dB
3.96 dB
Std. Dev. @ 80
5.78 dB
4.01 dB
Std. Dev. @ Max
7.21 dB
4.52 dB
Max
86.7 dB SPL
87.2 dB SPL
Dynamic Range Compression
3.60 dB
2.53 dB
Digital Room Correction
No
Distortion
7.6
Total Harmonic Distortion
Weighted THD @ 80
0.024
Weighted THD @ Max
0.142
IMD @ 80
1.63%
IMD @ Max
14.67%
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43Q550G
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TCL Q550G vs TCL S551G: Main Discussion
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