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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Sound Quality
- Smart Features
- Comments
Vizio P Series Quantum X 2020 vs Vizio P Series Quantum 2021
Side-by-Side Comparison
Products
Vizio P Series Quantum X 2020
Vizio P Series Quantum 2021
Tested using Methodology v1.6
Updated Jan 17, 2022 02:22 PM
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Amazon.comTested using Methodology v1.11
Updated Apr 16, 2025 03:28 PM
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Amazon.com
Resolution4k
TypeLED
Sub-TypeVA
Resolution4k
TypeLED
Sub-TypeVA
Variants
- P65QX-H1 (65")
- P75QX-H1 (75")
- P85QX-H1 (85")
- P65Q9-J01 (65")
- P75Q9-J01 (75")
Our Verdict
Vizio P Series Quantum X 2020
Vizio P Series Quantum 2021
The Vizio P Series Quantum X 2020 and the Vizio P Series Quantum 2021 are both great 4k TVs. They have similar features and each use VA panels with a high contrast ratio, at least on the 65 inch sizes, but local dimming is better on the Quantum X because it displays deeper blacks and has better uniformity. The Quantum X also gets brighter in HDR, so highlights pop more. Motion looks smoother on the Quantum X due to the quicker response time. The Quantum comes with the new Vizio remote, which has voice control, and the Quantum X doesn't have that.
Main Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
8.4
7.6
480p Input
7.0
5.0
Black Uniformity
9.6
7.8
Full Comparison
Design
Style
Design Picture
Curved
No
No
Accelerated Longevity Test
Uniformity Pictures
Month 26
50% Gray
Longevity Graph
Stand
Stand Picture
Back
Back Picture
Wall Mount
VESA 400x400
VESA 400x200
Borders
Borders Picture
Borders
0.35" (0.9 cm)
0.39" (1.0 cm)
Thickness
Thickness Picture
Max Thickness
2.72" (6.9 cm)
3.37" (8.6 cm)
Build Quality
8.0
8.0
Build quality picture
Picture Quality
Contrast
9.0
8.4
Contrast Picture
Contrast
14,345 : 1
25,845 : 1
Native Contrast
5,078 : 1
7,581 : 1
Blooming
7.0
Blooming Photo
Lighting Zone Transitions
7.0
Preferred LD Video, Moving Object
Local Dimming
Yes
Yes
Backlight
Full-Array
Full-Array
Dimming Zones Count Of Tested TV
144
Contrast And Dark Details In Game Mode
8.0
Blooming Photo In Game Mode
Preferred LD Video, Moving Object In Game Mode
Game Transitions With VRR And Preferred LD
HDR Brightness
8.8
7.8
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
602 cd/m²
Yellow Skyscraper (~700 cd/m²)
244 cd/m²
Landscape Pool (~300 cd/m²)
303 cd/m²
Peak 2% Window
1,243 cd/m²
738 cd/m²
Peak 10% Window
2,012 cd/m²
932 cd/m²
Peak 25% Window
1,256 cd/m²
934 cd/m²
Peak 50% Window
1,011 cd/m²
594 cd/m²
Peak 100% Window
606 cd/m²
498 cd/m²
Sustained 2% Window
694 cd/m²
726 cd/m²
Sustained 10% Window
1,895 cd/m²
919 cd/m²
Sustained 25% Window
1,244 cd/m²
925 cd/m²
Sustained 50% Window
1,008 cd/m²
593 cd/m²
Sustained 100% Window
604 cd/m²
498 cd/m²
Automatic Brightness Limiting (ABL)
0.060
0.037
EOTF
Real Scene Highlight
1,017 cd/m²
HDR Brightness In Game Mode
8.8
7.8
HDR Hallway Photo
HDR Cityscape Photo
HDR Landscape Photo
Hallway Lights (~1950 cd/m²)
602 cd/m²
Yellow Skyscraper (~700 cd/m²)
250 cd/m²
Landscape Pool (~300 cd/m²)
296 cd/m²
Peak 2% Window
1,244 cd/m²
710 cd/m²
Peak 10% Window
2,019 cd/m²
907 cd/m²
Peak 25% Window
1,259 cd/m²
914 cd/m²
Peak 50% Window
1,012 cd/m²
585 cd/m²
Peak 100% Window
607 cd/m²
493 cd/m²
Sustained 2% Window
695 cd/m²
702 cd/m²
Sustained 10% Window
1,899 cd/m²
898 cd/m²
Sustained 25% Window
1,246 cd/m²
907 cd/m²
Sustained 50% Window
1,010 cd/m²
584 cd/m²
Sustained 100% Window
605 cd/m²
493 cd/m²
Automatic Brightness Limiting (ABL)
0.060
0.036
Game Mode EOTF
Real Scene Highlight
1,031 cd/m²
PQ EOTF Tracking
7.7
PQ EOTF Graph
600 Nit Tracking Delta
0.0152
1000 Nit Tracking Delta
0.0154
4000 Nit Tracking Delta
0.0155
SDR Brightness
8.9
8.7
Real Scene Peak Brightness
672 cd/m²
593 cd/m²
Peak 2% Window
1,413 cd/m²
688 cd/m²
Peak 10% Window
1,924 cd/m²
932 cd/m²
Peak 25% Window
1,207 cd/m²
782 cd/m²
Peak 50% Window
939 cd/m²
635 cd/m²
Peak 100% Window
585 cd/m²
508 cd/m²
Sustained 2% Window
776 cd/m²
678 cd/m²
Sustained 10% Window
1,832 cd/m²
919 cd/m²
Sustained 25% Window
1,197 cd/m²
779 cd/m²
Sustained 50% Window
937 cd/m²
635 cd/m²
Sustained 100% Window
583 cd/m²
507 cd/m²
Automatic Brightness Limiting (ABL)
0.064
0.030
Color Gamut
8.8
8.8
Wide Color Gamut
Yes
Yes
Color Gamut DCI-P3 Picture
DCI P3 xy
94.05%
96.99%
DCI P3 uv
95.13%
96.67%
Color Gamut Rec.2020 Picture
Rec 2020 xy
78.12%
75.67%
Rec 2020 uv
83.35%
82.99%
Color Volume
7.8
8.4
P3 Color Volume ITP Picture
1,000 cd/m² DCI P3 Coverage ITP
53.7%
83.3%
2020 Color Volume ITP Picture
10,000 cd/m² Rec 2020 Coverage ITP
45.2%
39.4%
White Luminance
743 cd/m²
Red Luminance
150 cd/m²
Green Luminance
531 cd/m²
Blue Luminance
51 cd/m²
Cyan Luminance
584 cd/m²
Magenta Luminance
194 cd/m²
Yellow Luminance
661 cd/m²
Normalized DCI P3 Coverage ITP
82.7%
Normalized Rec 2020 Coverage ITP
71.7%
Local Dimming
8.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
Yes
Yes
Backlight
Full-Array
Full-Array
Pre Calibration
6.4
7.5
Pre White Balance Picture
Pre Gamma Curve Picture
Pre Color Picture
White Balance dE
4.46
3.23
Color dE
3.56
3.09
Gamma
2.08
2.24
Color Temperature
5,973 K
6,249 K
Picture Mode
Calibrated Dark
Calibrated Dark
Color Temp Setting
Warm
Warm
Gamma Setting
2.2
2.2
Post Calibration
9.1
9.1
Post White Balance Picture
Post Gamma Curve Picture
Post Color Picture
White Balance dE
0.46
0.18
Color dE
1.95
2.26
Gamma
2.21
2.20
Color Temperature
6,469 K
6,505 K
White Balance Calibration
20 point
20 point
Color Calibration
Yes
Yes
Gray Uniformity
8.0
7.1
50% Uniformity Picture
50% Std. Dev.
2.296%
2.923%
50% DSE
0.152%
0.213%
5% Uniformity Picture
5% Std. Dev.
1.107%
0.915%
5% DSE
0.109%
0.102%
Black Uniformity
9.6
7.8
Black Uniformity Picture With Preferred Local Dimming
Std. Dev.
0.546%
1.149%
Native Black Uniformity Picture
Native Std. Dev.
0.474%
0.589%
Viewing Angle
5.0
5.3
Viewing Angle Video
Chroma Graph
Color Washout
25°
24°
Hue Graph
Color Shift
20°
30°
Lightness Graph
Brightness Loss
34°
30°
Black Level Raise
21°
16°
Gamma Shift
9°
17°
Reflections
8.9
8.9
Reflections Picture
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Semi-gloss
Glossy
Total Reflections
2.3%
2.1%
Indirect Reflections
0.2%
0.2%
Calculated Direct Reflections
2.1%
2.0%
Local Dimming In Game Mode
8.0
LD Video, Moving Object
LD Video, Real Content
LD Video, Real Content Side View
Local Dimming
Yes
Backlight
Full-Array
HDR Native Gradient
8.5
7.5
HDR Gradient Picture
100% Black to 50% Gray
6.0
50% Gray to 100% White
8.0
100% Black to 50% Red
6.0
50% Red to 100% Red
10
100% Black to 50% Green
8.0
50% Green to 100% Green
6.0
100% Black to 50% Blue
8.0
50% Blue to 100% Blue
8.0
Color Depth
10 Bit
Red (Std. Dev.)
0.099
Green (Std. Dev.)
0.095
Blue (Std. Dev.)
0.080
Gray (Std. Dev.)
0.108
Low-Quality Content Smoothing
4.8
Low-Quality Content Smoothing Picture
Smoothing
3.0
Detail Preservation
9.0
Upscaling: Sharpness Processing
7.0
5.0
Sharpness Picture - 480p
Pixels
Pixels Picture
Subpixel Layout
BGR
Type
LED
LED
Sub-Type
VA
VA
720p Input
7.0
720p Picture
1080p Input
9.0
1080p Picture
4k Input
10
4k Picture
8k Input
0.0
8k Picture
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
8.0
7.1
Motion Blur Picture
Response Time Chart
80% Response Time
3.8 ms
6.6 ms
100% Response Time
14.4 ms
15.5 ms
Flicker-Free
4.0
6.0
Backlight chart
Flicker-Free
No
No
PWM Dimming Frequency
120 Hz
240 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
Yes
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
Stutter
7.6
7.8
Frame Hold Time @ 24 fps
27.3 ms
26.2 ms
Frame Hold Time @ 60 fps
2.3 ms
1.2 ms
24p Judder
7.8
7.8
Judder-Free 24p
Yes
Yes
Judder-Free 24p via 60p
No
No
Judder-Free 24p via 60i
No
No
Judder-Free 24p via Native Apps
Yes
Yes
Variable Refresh Rate
8.2
9.4
Native Refresh Rate
120 Hz
120 Hz
Variable Refresh Rate
Yes
Yes
HDMI Forum VRR
Unknown
Yes
FreeSync
Yes
Yes
G-SYNC Compatible
No
No
4k VRR Maximum
60 Hz
120 Hz
4k VRR Minimum
48 Hz
< 20 Hz
1080p VRR Maximum
120 Hz
120 Hz
1080p VRR Minimum
< 20 Hz
< 20 Hz
1440p VRR Maximum
N/A
60 Hz
1440p VRR Minimum
No VRR support
48 Hz
VRR + Local Dimming
Yes
VRR Supported Connectors
HDMI
Inputs
Input Lag
9.4
9.4
1080p @ 60Hz
14.1 ms
13.9 ms
1080p @ 60Hz Outside Game Mode
109.5 ms
113.5 ms
1080p @ 120Hz
59.0 ms
30.6 ms
1080p @ 144Hz
N/A
1440p @ 60Hz
14.1 ms
13.7 ms
1440p @ 120Hz
N/A
9.7 ms
1440p @ 144Hz
N/A
4k @ 60Hz
13.9 ms
14.2 ms
4k @ 60Hz + 10-Bit HDR
13.8 ms
13.9 ms
4k @ 60Hz @ 4:4:4
13.9 ms
14.2 ms
4k @ 60Hz Outside Game Mode
109.2 ms
113.6 ms
4k @ 60Hz With Interpolation
122.6 ms
114.6 ms
4k @ 120Hz
15.1 ms
9.8 ms
4k @ 144Hz
N/A
8k @ 60Hz
N/A
N/A
1080p with Variable Refresh Rate
34.6 ms
1440p with VRR
N/A
4k with VRR
13.7 ms
8k with VRR
N/A
Supported Resolutions
9.2
9.3
Resolution
4k
4k
480p @ 59.94Hz (Widescreen)
Yes
720p @ 59.94Hz
Yes
1080p @ 60Hz @ 4:4:4
Yes
Yes
1080p @ 120Hz
Yes (native support)
Yes
1080p @ 144Hz
No
1440p @ 60Hz
Yes (forced resolution required)
Yes (forced resolution required)
1440p @ 120Hz
No
Yes (forced resolution required)
1440p @ 144Hz
No
4k @ 60Hz
Yes
Yes
4k @ 60Hz @ 4:4:4
Yes
Yes
4k @ 120Hz
Yes (native support)
Yes
4k @ 120Hz @ 4:4:4
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
Yes
Yes
1440p @ 120Hz
PS5 can't do 1440p
Yes
1080p @ 120Hz
Yes
Yes
HDR
Yes
Xbox Series X Screenshot
VRR
PS5 can't do VRR yet
Yes
PS5, 4k @ 120Hz + HDR
Yes
PS5, 4k @ 60Hz + HDR
Yes
Xbox Series X, 4k @ 120Hz + HDR
Yes
Xbox Series X, 4k @ 120Hz
Yes
Yes
Xbox Series X, 4k @ 60Hz + HDR
Yes
Xbox Series X, 1440p @ 120Hz
No
Yes
Xbox Series X, 1080p @ 120Hz
Yes
Yes
Xbox Series X, Variable Refresh Rate
Yes
Yes
Xbox Series X|S Compatibility
Xbox Series X Screenshot
Auto Low Latency Mode (ALLM)
Yes
4k @ 120Hz
Yes
Yes
1440p @ 120Hz
No
Yes
1080p @ 120Hz
Yes
Yes
HDR
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 3,4)
CEC
Yes
Yes
HDCP 2.2
Yes (HDMI 1,2,3,4)
Yes (HDMI 1,2,3,4)
ATSC Tuner
1.0
USB 3.0
No
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
1
1
Digital Optical Audio Out
1
1
Analog Audio Out 3.5mm
0
1
Analog Audio Out RCA
1
0
Component In
0
0
Composite In
1
0
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 1)
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
6.6
Frequency Response
Low-Frequency Extension
113.14 Hz
100.79 Hz
Std. Dev. @ 70
4.27 dB
4.65 dB
Std. Dev. @ 80
4.21 dB
4.53 dB
Std. Dev. @ Max
6.10 dB
6.37 dB
Max
91.5 dB SPL
92.1 dB SPL
Dynamic Range Compression
3.88 dB
4.10 dB
Distortion
7.2
6.9
Total Harmonic Distortion
Weighted THD @ 80
0.093
0.197
Weighted THD @ Max
0.552
0.870
IMD @ 80
2.19%
1.55%
IMD @ Max
5.39%
6.51%
Smart Features
Interface
7.0
7.0
Smart TV Picture
Smart OS
SmartCast
SmartCast
Version
1.60
1.50
Ease of Use
Easy
Easy
Smoothness
Average
Average
Time Taken to Select YouTube
10 s
3 s
Time Taken to Change Backlight
3 s
3 s
Advanced Options
Many
Many
Ad-Free
10
10
Ads Picture
Ads
No
No
Opt-out
No Ads
No Ads
Suggested Content in Home
Yes
Yes
Opt-out of Suggested Content
No
No
Apps and Features
6.5
6.5
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
6.0
6.5
Remote Picture
Size
Medium
Medium
Voice Control
Search, Some Other Features
Search, Some Other Features
CEC Menu Control
Yes
Yes
Other Smart Features
No
No
Remote App
Vizio SmartCast Mobile
Vizio SmartCast Mobile
TV Controls
Controls Picture
In The Box
In The Box Picture
Misc
Power Consumption
87 W
77 W
Power Consumption (Max)
311 W
246 W
Firmware
5.10.8.1-1
5.41.18.5-1
Vizio P Series Quantum X 2020
Vizio P Series Quantum 2021
Comments
Vizio P Series Quantum X 2020 vs Vizio P Series Quantum 2021: Main Discussion
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