Vizio P Series Quantum 2020 TV Review

Tested using Methodology v1.6
Updated Oct 29, 2020 at 11:32 am
Vizio P Series Quantum 2020 Picture
8.1
Mixed Usage
Value for price beaten by
: Hisense H9G
8.1
Movies
Value for price beaten by
: Hisense H9G
7.9
TV Shows
Value for price beaten by
: Hisense H9G
7.9
Sports
Value for price beaten by
: Hisense H9G
8.5
Video Games
Value for price beaten by
: Hisense U8G
8.1
HDR Movies
Value for price beaten by
: Hisense H9G
8.5
HDR Gaming
Value for price beaten by
: Hisense U8G
8.2
PC Monitor
Value for price beaten by
: LG NANO90 2020
This TV was replaced by the Vizio P Series Quantum 2021
Type LED
Sub-Type
VA
Resolution 4k

The Vizio P Series Quantum 2020 is an overall great 4k TV. Like its predecessor, the Vizio P Series Quantum 2019, it sports a VA panel that can display deep blacks, and it has a full-array local dimming to improve black level further, making it a great choice for dark room viewing. It's also well-suited for bright rooms thanks to its high peak brightness and good reflection handling. It has a fast response time, an optional Black Frame Insertion feature, and can interpolate lower frame rate content up to 120 fps for fans of the soap opera effect. Its input lag is very low and supports variable refresh rate technology to reduce screen tearing when gaming. Unfortunately, its narrow viewing angles make it less ideal for large rooms and wide seating areas, as the image looks washed out from the sides. Also, its local dimming causes blooming around bright objects, which can be distracting. On the upside, it delivers a great HDR experience, as it has an excellent color gamut and gets bright enough to make highlights stand out.

Our Verdict

8.1 Mixed Usage

The Vizio P Series Quantum 2020 is an overall great TV. It has a high contrast ratio that allows it to produce deep blacks, making it great for watching movies in the dark. It has an excellent HDR color gamut, a full-array local dimming feature, and gets very bright to deliver a great HDR experience. Its fast response time results in minimal motion blur in fast-moving scenes and, combined with its low input lag, it's well-suited for playing video games. Unfortunately, it has poor viewing angles, and its local dimming causes a lot of blooming.

Pros
  • High contrast ratio.
  • Gets very bright.
  • Good reflection handling.
Cons
  • Poor viewing angles.
  • Some vignetting and dirty screen effect.
8.1 Movies

The Vizio P Series Quantum 2020 is great for watching movies. It delivers good picture quality thanks to its high contrast ratio, but its full-array local dimming causes a lot of blooming, and there's clouding throughout the screen on our unit, which can be distracting. On the upside, it upscales lower resolution movies well, and it can remove judder from 24p sources and native apps.

Pros
  • High contrast ratio.
  • Can remove judder from 24p sources and native apps.
Cons
  • Blooming around bright objects and subtitles.
  • Some vignetting and dirty screen effect.
7.9 TV Shows

The Vizio P Series Quantum 2020 is good for watching TV shows. It handles reflections well, and it gets bright enough to fight glare, so you shouldn't have any issues with visibility in broad daylight. However, its VA panel's poor viewing angles cause images to look washed out when viewed from the side, making it less ideal for those who like to walk around while watching TV.

Pros
  • Gets very bright.
  • Good reflection handling.
Cons
  • Poor viewing angles.
  • Some vignetting and dirty screen effect.
7.9 Sports

The Vizio P Series Quantum 2020 is good for watching sports. It has a fast response time that results in minimal motion blur and a Black Frame Insertion feature to improve clarity further. It handles reflections well, and it gets bright enough to overcome glare in well-lit environments. The viewing angles are poor, though, which isn't ideal for watching a big game with a large group of people.

Pros
  • Gets very bright.
  • Fast response time.
  • Good reflection handling.
Cons
  • Poor viewing angles.
  • Some vignetting and dirty screen effect.
8.5 Video Games

The Vizio P Series Quantum 2020 is excellent for gaming. Its fast response time and 120Hz refresh rate make fast-moving scenes look crisp and buttery smooth. It has incredibly low input lag to make every action feel almost instantaneous, and it supports variable refresh rate technology to deliver a nearly tear-free gaming experience. Its VA panel can produce deep blacks, making it a good option for gaming in the dark.

Pros
  • High contrast ratio.
  • Low input lag.
  • Fast response time.
Cons
  • VRR doesn't work.
8.1 HDR Movies

The Vizio P Series Quantum 2020 is great for watching movies in HDR. It has a high contrast ratio to produce deep blacks, an excellent color gamut, and a high peak brightness to make highlights pop. However, black uniformity isn't that good on our unit, and the local dimming feature causes a lot of blooming around bright objects.

Pros
  • High contrast ratio.
  • Gets very bright.
  • Can remove judder from 24p sources and native apps.
  • Excellent HDR color gamut.
Cons
  • Blooming around bright objects and subtitles.
  • Some vignetting and dirty screen effect.
8.5 HDR Gaming

The Vizio P Series Quantum is excellent for gaming in HDR. It has excellent motion handling due to its fast response time and 120Hz refresh rate. Its input lag is low and remains low when playing in 4k with 10-bit HDR. Also, it supports variable refresh rate technology to reduce screen tearing. It can deliver a stunning HDR experience, as it has an excellent color gamut to produce vibrant colors and a high peak brightness to make highlights pop.

Pros
  • High contrast ratio.
  • Gets very bright.
  • Low input lag.
  • Fast response time.
  • Excellent HDR color gamut.
Cons
  • Blooming around bright objects and subtitles.
  • VRR doesn't work.
8.2 PC Monitor

The Vizio P Series Quantum 2020 is a great TV for use as a PC monitor. It has low input lag, a fast response time, and supports most common resolutions. It has excellent reflection handling and gets very bright to provide good visibility in well-lit environments. Unfortunately, its poor viewing angles make images look washed out at the edges if you sit close to the screen. Also, while it supports chroma 4:4:4, it's a little buggy right now and would require a firmware update.

Pros
  • Low input lag.
  • Fast response time.
  • Good reflection handling.
Cons
  • Poor viewing angles.
  • 8.1 Mixed Usage
  • 8.1 Movies
  • 7.9 TV Shows
  • 7.9 Sports
  • 8.5 Video Games
  • 8.1 HDR Movies
  • 8.5 HDR Gaming
  • 8.2 PC Monitor
  1. Updated Jul 28, 2021: Confirmed that is 1440p is a forced resolution, and added real content local dimming videos.
  2. Updated Mar 01, 2021: Updated firmware and retested the peak brightness and 4k @ 120Hz in 'Game' mode.
  3. Updated Mar 01, 2021: Converted to Test Bench 1.6.
  4. Updated Dec 16, 2020: We've retested the local dimming with the latest firmware version 5.10.15.5-4.
  5. Updated Nov 11, 2020: Corrected a mistake with the Vizio SmartCast version.
  6. Updated Oct 29, 2020: Updated review for accuracy and clarity.
  7. Updated Oct 26, 2020: We've reuploaded some of the photos in the review and retested the input lag, supported resolutions, and VRR with the latest firmware (version 5.10.13.1-2).
  8. Updated Oct 14, 2020: We've retested the reflection handling and updated the score.
  9. Updated Sep 30, 2020: Remeasured input lag and noticed uniformity issues.

Video

Test Results

perceptual testing image
Market Context
Market Context
Market Context

The Vizio P Series Quantum 2020 is the Vizio P Series Quantum 2019's successor, sitting just below their flagship LED TV, the Vizio P Series Quantum X 2020. We expect it to compete with the Sony X900H, the Samsung Q70T QLED, and the Hisense H8G.

Design
Design
Style
Curved No

The Vizio P65Q9-H1 has an excellent design and looks nearly identical to its predecessor, the Vizio P Series Quantum 2019. It's simple and clean, with thin borders on all sides.

Design
Stand

The feet are set almost as wide as the TV itself and aren't reversible, so you need a large table if you don't plan on wall-mounting it. They support the TV well, but there's still a bit of wobble.

Footprint of the 65" stand: 50.7" x 11.7"

Design
Back
Wall Mount VESA 400x400

The back is nearly identical to the Vizio P Series Quantum 2019. It's a lightly textured plastic, and there's no cable management.

Design
Borders
Borders 0.35" (0.9 cm)

The borders are thin and aren't distracting.

Design
Thickness
Max Thickness 2.68" (6.8 cm)

The TV is fairly thin and doesn't stick out much when wall-mounted.

8.0
Design
Build Quality

The build quality is great. It's entirely made out of plastic, but it feels sturdy and doesn't flex much. The stand supports the TV well, allowing for just a small amount of wobble.

Picture Quality
9.0
Picture Quality
Contrast
Native Contrast
5,507 : 1
Contrast with local dimming
6,125 : 1

The Vizio P65Q9-H1 has an outstanding contrast ratio and can produce deep blacks. It's better with local dimming enabled, but not by much. Note that the contrast ratio can vary between units.

8.7
Picture Quality
SDR Brightness
Real Scene Peak Brightness
630 cd/m²
Peak 2% Window
632 cd/m²
Peak 10% Window
1,064 cd/m²
Peak 25% Window
850 cd/m²
Peak 50% Window
758 cd/m²
Peak 100% Window
546 cd/m²
Sustained 2% Window
630 cd/m²
Sustained 10% Window
600 cd/m²
Sustained 25% Window
846 cd/m²
Sustained 50% Window
755 cd/m²
Sustained 100% Window
545 cd/m²
Automatic Brightness Limiting (ABL)
0.024

Update 02/15/2021: We updated the TV to the latest firmware and retested the SDR peak brightness. The 2% and 10% sustained windows became more dim, while the 25%, 50%, and 100% windows got brighter. The review has been updated.

Excellent SDR peak brightness. It varies a lot depending on the scene, but overall, it's enough to overcome glare in a bright environment.

We measured the SDR peak brightness after calibration, using the 'Calibrated Dark' Picture Mode, with Backlight at max, Active Full-Array set to 'High', Gamma set to 2.2, and Color Temperature set to 'Warm'.

If you don't mind losing a bit of image accuracy, you can get a brighter picture using the 'Vivid' Picture Mode, with Backlight at max, Active Full-Array set to 'High', Gamma set to 2.2, and Color Temperature set to 'Cool'. We achieved a peak brightness of 1101 cd/m² in the 10% window using these settings.

7.0
Picture Quality
Local Dimming
Local Dimming
Yes
Backlight
Full-Array

Update 07/28/2021: Added the real content local dimming videos.

Update 12/16/2020: We've retested the local dimming with the latest firmware version 5.10.15.5-4. Not much has changed, but like the Vizio P Series Quantum X 2020, we now recommend using the 'Medium' setting as it causes less blooming than the 'High' setting.

The Vizio P Series Quantum has a decent full-array local dimming feature. It performs zone transitions relatively well, as it can follow slow-moving objects pretty closely, but it lags when there's faster movement. While zone transitions are visible when playing our test pattern, it isn't as bad in regular content.

There's a fair amount of blooming, more so in regular content than with our test pattern. It tends to make dark areas look grayish or over-brighten dark spots that have some form of light. It isn't always noticeable, but it can be distracting. Blooming isn't uniform, as some areas bloom more intensely than others. Unfortunately, subtitles aren't handled well. They're very bright, and there's a lot of blooming around them.

Even though the circle in our test pattern dims a lot when it's moving around quickly, it doesn't seem to be an issue in regular content. Unlike the Vizio P Series Quantum 2019, we find almost no difference between the 'Medium and the 'High' setting (local dimming is called Active Full-Array in the settings). We recommend using the 'Medium' setting.

On the 'High' setting, small highlights like stars look okay and aren't crushed. That said, there's blooming, and it doesn't happen on every star, which makes the screen look blotchy.

7.0
Picture Quality
Local Dimming In Game Mode
Local Dimming
Yes
Backlight
Full-Array

Update 07/28/2021: Added the real content local dimming videos.

The local dimming in Game Mode is decent and looks the same as outside of Game Mode.

7.7
Picture Quality
HDR Brightness
Real Scene Highlight
651 cd/m²
Peak 2% Window
660 cd/m²
Peak 10% Window
1,051 cd/m²
Peak 25% Window
830 cd/m²
Peak 50% Window
734 cd/m²
Peak 100% Window
531 cd/m²
Sustained 2% Window
653 cd/m²
Sustained 10% Window
592 cd/m²
Sustained 25% Window
823 cd/m²
Sustained 50% Window
731 cd/m²
Sustained 100% Window
530 cd/m²
Automatic Brightness Limiting (ABL)
0.024

Update 02/15/2021: We updated the TV to the latest firmware and retested the HDR peak brightness. The 2% and 10% sustained windows became more dim, while the 25%, 50%, and 100% windows got brighter. The review has been updated.

Great HDR peak brightness. Like in SDR, there's a lot of brightness variability when displaying different content. It can get very bright, enough to deliver a good HDR experience.

We measured the HDR peak brightness before calibration, using the 'Calibrated Dark' Picture Mode, with Backlight at max, Active Full-Array set to 'High', Gamma set to '2.2', and Color Temperature set to 'Warm'.

If you don't mind losing image accuracy, set the Picture Mode to 'Vivid', with Active Full-Array set to 'High', and Color Temperature set to 'Cool'. We achieved a peak brightness of 1090 cd/m² in the 10% window using these settings.

7.7
Picture Quality
HDR Brightness In Game Mode
Real Scene Highlight
677 cd/m²
Peak 2% Window
659 cd/m²
Peak 10% Window
1,051 cd/m²
Peak 25% Window
832 cd/m²
Peak 50% Window
736 cd/m²
Peak 100% Window
532 cd/m²
Sustained 2% Window
653 cd/m²
Sustained 10% Window
594 cd/m²
Sustained 25% Window
825 cd/m²
Sustained 50% Window
733 cd/m²
Sustained 100% Window
531 cd/m²
Automatic Brightness Limiting (ABL)
0.024
6.6
Picture Quality
Gray Uniformity
50% Std. Dev.
4.259%
50% DSE
0.229%
5% Std. Dev.
1.270%
5% DSE
0.109%

Update 09/30/2020: After warming up the TV for three hours to remeasure input lag, the backlight became visible and we noticed uniformity issues. You can see the photo here, but note that this is taken on a phone and not our usual camera setup. If you have this TV and notice this issue, let us know.

Gray uniformity on our unit of the Vizio P Series Quantum is okay. The corners and edges are darker, and there's visible dirty screen effect in the center. Uniformity is better in dark scenes, but still not that great, especially on the left side of the screen. Note that gray uniformity can vary between units.

8.3
Picture Quality
Black Uniformity
Native Std. Dev.
0.907%
Std. Dev. w/ L.D.
0.486%

Update 01/08/2021: We reuploaded the black uniformity photos because there was an issue with the original photos. This improved the results and the review has been updated.

The black uniformity is great. There's a bit of clouding without local dimming, and it's noticeable in the corners. However, with local dimming, there's no clouding and only a bit of blooming around the center cross. Note that black uniformity may vary between units.

5.2
Picture Quality
Viewing Angle
Color Washout
23°
Color Shift
22°
Brightness Loss
31°
Black Level Raise
17°
Gamma Shift
18°

Like most VA panel TVs, the Vizio P65Q9-H1 has poor viewing angles, which isn't ideal for large rooms or wide seating areas. There's an Enhanced Viewing Angle feature that can help improve viewing angles slightly, but it causes spatial dithering.

8.8
Picture Quality
Reflections
Screen Finish
Semi-gloss
Total Reflections
2.3%
Indirect Reflections
0.2%
Calculated Direct Reflections
2.1%

Update 10/14/2020: We've retested the reflection handling and determined that the performance is more in-line with the Vizio P Series Quantum X 2020's. The score has been updated accordingly.

Excellent reflection handling. It handles ambient light well and even though it may not be the best choice to place it opposite a window, it still performs well in bright rooms.

7.6
Picture Quality
Pre Calibration
White Balance dE
3.24
Color dE
2.63
Gamma
2.17
Color Temperature
6,062 K
Picture Mode
Calibrated Dark
Color Temp Setting
Warm
Gamma Setting
2.2

Out-of-the-box, the Vizio P65Q9-H1 has good color accuracy. Most color inaccuracies are relatively minor, but white balance is off, and the color temperature is on the warm side, resulting in a slight reddish tint. Gamma follows the target reasonably well; however, both dark and bright scenes are over-brightened. Note that color accuracy can vary between units.

9.6
Picture Quality
Post Calibration
White Balance dE
0.21
Color dE
0.82
Gamma
2.20
Color Temperature
6,489 K
White Balance Calibration
11 point
Color Calibration
Yes

After calibration, the color accuracy is exceptional. White balance and gamma are nearly perfect, and the remaining color inaccuracies shouldn't be noticeable. The color temperature is much closer to our 6500K target.

You can see our recommended setting here.

7.0
Picture Quality
480p Input

480p content, like from DVDs, looks decent and there aren't many artifacts.

7.0
Picture Quality
720p Input

The Vizio P65Q9-H1 upscales 720p content, like from cable boxes, fairly well.

9.0
Picture Quality
1080p Input

1080p content looks good, and there are no issues with the upscaling.

10
Picture Quality
4k Input

Update 10/26/2020: We've retested the Enhanced Viewing Angle feature. It now works but it causes dithering, as you can see in this photo.

4k content is displayed perfectly.

0
Picture Quality
8k Input

The Vizio P Series Quantum 2020 can't display an 8k signal.

Picture Quality
Pixels

This TV uses a BGR sub-pixel structure and may affect text clarity when using it as a PC monitor. You can read more about it here.

8.9
Picture Quality
Color Gamut
Wide Color Gamut
Yes
DCI P3 xy
97.57%
DCI P3 uv
98.10%
Rec 2020 xy
77.99%
Rec 2020 uv
82.32%

The Vizio P65Q9-H1 has an excellent HDR color gamut. It has near full coverage of the commonly-used DCI P3 color space and great coverage of the wider Rec. 2020. The EOTF follows the PQ curve almost perfectly until the roll-off, and the 'Game' mode EOTF is nearly identical. If you find HDR content too dim, you can get a brighter image by setting the Picture Mode to 'Calibrated Dark', Active Full-Array to 'High', Gamma to '1.8', Backlight to max, and Local Contrast to 'Medium'. These settings result in a much brighter image, as you can see in this EOTF.

8.3
Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
88.6%
10,000 cd/m² DCI P3 Coverage ITP
51.9%
Normalized Rec 2020 Coverage ITP
76.4%
10,000 cd/m² Rec 2020 Coverage ITP
44.6%

Great color volume. It displays dark and saturated colors well, but it has a hard time with bright blues, which is typical for LCDs.

8.1
Picture Quality
Gradient
Color Depth
10 Bit
Red (Std. Dev.)
0.091
Green (Std. Dev.)
0.099
Blue (Std. Dev.)
0.086
Gray (Std. Dev.)
0.151

Great gradient handling. There'a bit of banding in the greens and reds, but it's most noticeable in the grays. Enabling Signal Noise in the Reduce Noise menu doesn't seem to help much.

10
Picture Quality
Temporary Image Retention
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%

There are no signs of temporary image retention. Note that temporary image retention can vary between units.

10
Picture Quality
Permanent Burn-In Risk
Permanent Burn-In Risk
No

We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.

Motion
8.5
Motion
Response Time
80% Response Time
4.1 ms
100% Response Time
8.8 ms

The Vizio P Series Quantum has excellent response time. However, there's image duplication due to the backlight's 120Hz flicker.

4.0
Motion
Flicker-Free
Flicker-Free
No
PWM Dimming Frequency
120 Hz

Update 10/26/2020: We uploaded the wrong backlight chart picture. It has been fixed.

The backlight is flicker-free when the brightness is at max, but anything below that, the backlight flickers at 120Hz.

10
Motion
Black Frame Insertion (BFI)
Optional BFI
Yes
Min Flicker For 60 fps
60 Hz
60Hz For 60 fps
Yes
120Hz For 120 fps
Yes
Min Flicker for 60 fps in Game Mode
60 Hz

The Vizio P65Q9-H1 has an optional Black Frame Insertion (BFI) feature to improve motion clarity. Enabling it lowers the backlight's flickering frequency to 60Hz. Unfortunately, there's terrible strobe crosstalk, resulting in image duplication. To use BFI, turn on Clear Action.

Motion
Motion Interpolation
Motion Interpolation (30 fps)
Yes
Motion Interpolation (60 fps)
Yes

This TV can interpolate lower frame rate content up to 120fps to make motion look smoother, otherwise known as the 'Soap Opera Effect'. It does a pretty good job in quiet to moderately fast-moving scenes, but there are artifacts if the action gets too intense. To interpolate 30fps content, increase Judder Reduction, and for 60fps content, increase Blur Reduction. These settings need to be adjusted depending on the content that you're watching.

6.5
Motion
Stutter
Frame Hold Time @ 24 fps
32.9 ms
Frame Hold Time @ 60 fps
7.9 ms

Due to the TV's fast response time, lower frame rate content can appear to stutter, since each frame is held for longer. If stutter bothers you, enabling motion interpolation can help.

7.8
Motion
24p Judder
Judder-Free 24p
Yes
Judder-Free 24p via 60p
No
Judder-Free 24p via 60i
No
Judder-Free 24p via Native Apps
Yes

This TV can remove judder from 24p sources and native apps, but not from 60p or 60i sources. To remove judder, enable Film Mode. Unlike the Vizio P Series Quantum 2019, setting Judder Reduction to '1' doesn't remove judder from 60p/60i sources.

8.2
Motion
Variable Refresh Rate
Native Refresh Rate
120 Hz
Variable Refresh Rate
Yes
HDMI Forum VRR
Unknown
FreeSync
Yes
G-SYNC Compatible
No
4k VRR Maximum
60 Hz
4k VRR Minimum
48 Hz
1080p VRR Maximum
120 Hz
1080p VRR Minimum
< 20 Hz
1440p VRR Maximum
N/A
1440p VRR Minimum
No VRR support
VRR Supported Connectors
HDMI

Update 10/26/2020: We've retested the VRR with the new firmware (version 5.10.13.1-2). It only works at 4k @ 60Hz, but the VRR range is smaller, from 48-60Hz. At 4k 120Hz, the screen is still tearing a lot when VRR is enabled. Also, VRR doesn't work at 1440p @ 60Hz, and at 1440p @ 120Hz, enabling VRR causes visible artifacts. It can detect G-SYNC on an NVIDIA RTX 3080 graphics card, but turning on VRR causes a crash and requires resetting the PC.

The Vizio P65Q9-H1 is advertised to have HDMI Forum VRR support. However, it doesn't seem to be working at this time, even though our connected Xbox indicates that it's functioning correctly. It also caused a few crashes when enabled. We suspect that this is a bug that'll likely be fixed in a future firmware update. We'll retest it once it's available. To turn on VRR, set Game Low Latency and Variable Refresh Rate to 'On'.

Inputs
9.4
Inputs
Input Lag
1080p @ 60Hz
13.7 ms
1080p @ 60Hz Outside Game Mode
109.4 ms
1440p @ 60Hz
13.7 ms
4k @ 60Hz
13.8 ms
4k @ 60Hz + 10-Bit HDR
13.7 ms
4k @ 60Hz @ 4:4:4
13.8 ms
4k @ 60Hz Outside Game Mode
109.1 ms
4k @ 60Hz With Interpolation
130.4 ms
8k @ 60Hz
N/A
1080p @ 120Hz
34.5 ms
1440p @ 120Hz
N/A
4k @ 120Hz
14.4 ms
1080p with Variable Refresh Rate
88.7 ms
1440p with VRR
N/A
4k with VRR
14.7 ms
8k with VRR
N/A

Update 10/26/2020: We've retested the input lag with the latest firmware (version 5.10.13.1-2) and an HDMI 2.1 source. The 4k with VRR input is measured at 60Hz since VRR doesn't work at 4k @ 120Hz.

Update 09/30/2020: Remeasured the input lag at 1080p @ 60Hz because it was much lower compared to 2019 Vizio TVs and the Vizio P Series Quantum X 2020. The input lag only slightly increased and the review has been updated.

The Vizio P65Q9-H1 has excellent low input lag, a nice improvement from the Vizio P Series Quantum 2019. Motion interpolation is usable when gaming; however, it adds significant input lag and isn't recommended.

To get the lowest input lag, set Game Low Latency to 'On'. You can also set it to 'Auto' if you want to enable the 'Auto Low Latency Mode', which turns the mode on automatically when the TV detects a game launching from a compatible device. For signals that require full bandwidth, Vizio has removed the Full UHD Color settings, so there's nothing to change.

For PC use, set Game Low Latency to 'On'. Vizio has removed the 'Computer' mode.

Note: We encountered a few issues while testing the input lag. The first is that the TV skips frames when playing 1080p or 1440p content at 120Hz with Game Low Latency on. The second is that the input lag results are very inconsistent at 120Hz, as they vary wildly between each run. Testing was done on multiple computers and we couldn't get consistent results on any of them. We suspect that this is a bug; we'll retest it once an update is available.

9.6
Inputs
Supported Resolutions
1080p @ 60Hz @ 4:4:4
Yes
1080p @ 120Hz
Yes (native support)
1440p @ 60Hz
Yes (forced resolution required)
1440p @ 120Hz
Yes (forced resolution required)
4k @ 60Hz
Yes
4k @ 60Hz @ 4:4:4
Yes
4k @ 120Hz
Yes (native support)
8k @ 30Hz or 24Hz
No
8k @ 60Hz
No

Update 07/28/2021: We confirmed that this TV displays 1440p content only with a custom resolution, whether it's at 60Hz or 120Hz.

Update 02/15/2021: We updated the TV to the latest firmware and retested it to see if 4k @ 120Hz in 'Game' mode works. Sadly, it still skips frames and flickers when there's an Xbox Series X or PS5 connected. However, 4k @ 120Hz still works outside of 'Game' mode.

Update 10/26/2020: We've retested the supported resolutions with the latest firmware (version 5.10.13.1-2) and an HDMI 2.1 source. 4k @ 120Hz is now accessible with RGB, chroma 4:2:0, 4:2:2, and 4:4:4, but none of them are displaying proper chroma 4:4:4. The Full Color 444 setting isn't functional at 1440p and 4k, and 4k @ 120Hz still skips frames when Game Low Latency is enabled.

The Vizio P65Q9-H1 supports most common resolutions at 60Hz and 120Hz. As mentioned in the input lag section, the TV skips frames when playing a 1080p or 1440p @ 120Hz signal with Game Low Latency enabled.

The TV does support chroma 4:4:4, but there are a couple of bugs. When the PC is set to RGB, the TV grays out the Full Color 4:4:4 option, but it's transmitting a proper chroma 4:4:4 signal. Setting the PC to chroma 4:4:4 looks bad, and it looks even worse when the TV is also set to Full Color 4:4:4. These are likely bugs that'll be fixed in a future firmware update.

Inputs
Advanced Console Compatibility
Auto Low Latency Mode (ALLM)
Yes
PS5, 4k @ 120Hz + HDR
No
PS5, 4k @ 120Hz
No
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
No
Xbox Series X, 1080p @ 120Hz
Yes
Xbox Series X, Variable Refresh Rate
Yes
Inputs
Inputs Specifications
HDR10
Yes
HDR10+
Yes
Dolby Vision
Yes
HLG
Yes
HDMI 2.0 Full Bandwidth
Yes (HDMI 1,2,3,4)
HDMI 2.1 Class Bandwidth
Yes (HDMI 3,4)
CEC Yes
HDCP 2.2 Yes (HDMI 1,2,3,4)
USB 3.0
No
Variable Analog Audio Out No
Wi-Fi Support Yes (2.4 GHz, 5 GHz)

This TV supports HDMI 2.1 on ports 3 and 4, as they're the only ones that accept a 4k @ 120Hz signal. That said, the TV's 'Auto Low Latency Mode' works on all ports.

Inputs
Input Photos
Inputs
Total Inputs
HDMI 4
USB 1
Digital Optical Audio Out 1
Analog Audio Out 3.5mm 0
Analog Audio Out RCA 1
Component In 0
Composite In 1
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0
SD/SDHC 0
Inputs
Audio Passthrough
ARC
Yes (HDMI 1)
eARC support
Yes
Dolby Atmos via TrueHD via eARC
Yes
DTS:X via DTS-HD MA via eARC
Yes
5.1 Dolby Digital via ARC
Yes
5.1 DTS via ARC
Yes
5.1 Dolby Digital via Optical
Yes
5.1 DTS via Optical
Yes

The Vizio P65Q9-H1 supports eARC, allowing it to pass high-quality audio like Dolby Atmos via TrueHD over an HDMI connection. To use it, set eARC to 'On', and Digital Audio Out to 'Auto'.

Sound Quality
6.6
Sound Quality
Frequency Response
Low-Frequency Extension
95.14 Hz
Std. Dev. @ 70
5.03 dB
Std. Dev. @ 80
5.00 dB
Std. Dev. @ Max
6.11 dB
Max
93.8 dB SPL
Dynamic Range Compression
4.49 dB

The Vizio P65Q9-H1 has an okay frequency response. It's reasonably well-balanced, and dialogue comes across clearly. Unfortunately, it lacks bass extension to produce a thumping or rumbling sound. On the bright side, it gets very loud without adding too much compression at max volume.

7.4
Sound Quality
Distortion
Weighted THD @ 80
0.127
Weighted THD @ Max
0.894
IMD @ 80
0.51%
IMD @ Max
2.68%

Decent distortion performance. There's almost no distortion at all when playing at moderate volume levels. Even at max volume, it's extremely low and shouldn't be audible.

Smart Features
7.0
Smart Features
Interface
Smart OS SmartCast
Version 1.40
Ease of Use
Easy
Smoothness
Average
Time Taken to Select YouTube
9 s
Time Taken to Change Backlight
3 s
Advanced Options
Many

Update 11/11/2020: The SmartCast version was incorrectly listed as version 1.60, when it's in fact version 1.40.

Vizio's SmartCast platform is decent. It's easy to use, but it's a little buggy. In addition to the issues mentioned in the input lag and supported resolution sections, the interface crashes from time to time.

10
Smart Features
Ad-Free
Ads
No
Opt-out
No Add
Suggested Content in Home
Yes
Opt-out of Suggested Content
No

There aren't any ads on the home screen, only suggested content from Vizio to promote their WatchFree feature.

6.5
Smart Features
Apps and Features
App Selection
Great
App Smoothness
Average
Cast Capable
Yes
USB Drive Playback
Yes
USB Drive HDR Playback
Yes
HDR in Netflix
Yes
HDR in YouTube
Yes

There's a reasonable number of apps that come pre-installed. However, there's no way to add more since Vizio doesn't have an app store.

6.0
Smart Features
Remote
Size
Medium
Voice Control
No
CEC Menu Control
Yes
Other Smart Features
No
Remote App Vizio SmartCast Mobile

The remote has changed slightly from the Vizio P Series Quantum 2019. It now has a circular navigation pad, but otherwise, it provides the same functions. Unfortunately, there's no voice control.

Smart Features
TV Controls

The TV's controls are located on the right backside of the TV. It allows you to turn the TV On/Off, change the input source, and adjust the volume.

Smart Features
In The Box

  • User guide
  • Remote control
  • 2x AAA batteries

Smart Features
Misc
Power Consumption 107 W
Power Consumption (Max) 286 W
Firmware 5.10.13.1-2

Differences Between Sizes And Variants

We tested the 65" Vizio P Series Quantum 2020 (P65Q9-H1), and for the most part, we expect our results to be valid for the 75" (P75Q9-H1) model as well, though the different amount of dimming zones will affect local dimming performance slightly.

Size Model Dimming Zones
65" P65Q9-H1 200
75" P75Q9-H1 240

If someone comes across a different type of panel or their P Series Quantum doesn't correspond to our review, let us know and we'll update the review. Note that some tests, such as gray uniformity, may vary between individual units.

The manufacturing date of our unit isn't indicated; you can see the label here.

Compared To Other TVs

The Vizio P Series Quantum 2020 is an overall good 4k TV. There are a few minor improvements over its predecessor, the Vizio P Series Quantum 2019, but there are also better TVs that cost less, such as the Hisense H9G. For more options, check out our recommendations for the best TVs, the best 4k TVs, and the best 4k gaming TVs.

Sony X900H
55" 65" 75" 85"

The Vizio P Series Quantum 2020 and the Sony X900H are very similarly performing TVs. The Vizio has a higher contrast ratio, better color gamut, and gets brighter. However, the Sony has a better local dimming feature and better color accuracy. It also has more apps available due to the Google Play Store, and it can remove judder from all sources.

Vizio P Series Quantum X 2020
65" 75" 85"

The Vizio P Series Quantum X 2020 is better than the Vizio P Series Quantum 2020. The X 2020 has better local dimming, slightly better reflection handling, and gets much brighter. The P Series Quantum 2020 has faster response time, though, and it also has better color accuracy out-of-the-box.

TCL 6 Series/R635 2020 QLED
55" 65" 75"

The Vizio P Series Quantum 2020 is a bit better than the TCL 6 Series/635 2020. The Vizio has better reflection handling and color accuracy, as well as lower input lag and faster response time. On the flip side, the TCL can remove judder from all sources, its internal speakers sound better, and its backlight's high flickering frequency causes less motion duplication in fast-moving scenes.

Hisense H9G
55" 65"

Overall, the Hisense H9G is much better than the Vizio. The Hisense has a higher contrast ratio, its local dimming performs better, and it gets brighter in SDR and HDR. It also has a faster response time, and it's cheaper. However, the Vizio has better color accuracy out-of-the-box, a much better HDR color gamut, and lower input lag.

LG CX OLED
48" 55" 65" 77"

Overall, the LG CX OLED is much better than the Vizio P Series Quantum 2020. Although both TVs are well-suited for dark rooms, the LG's OLED panel can produce perfect blacks due to its emissive technology. Additionally, it has a faster response time, wider viewing angles, and better color accuracy. However, the Vizio is a better choice for well-lit rooms due to its higher peak brightness, and it also gets brighter in HDR to make highlights pop.

Samsung Q70/Q70T QLED
55" 65" 75" 82" 85"

For most uses, the Vizio P Series Quantum 2020 is better than the Samsung Q70/Q70T QLED. The Vizio has local dimming, which the Samsung doesn't have, and it gets a lot brighter in SDR and HDR. It also has a much better HDR color gamut and faster response time. However, the Samsung has a higher contrast ratio and a lower input lag.

Vizio M7 Series Quantum 2021
50" 55" 58" 70" 75"

The Vizio P Series Quantum 2020 is better than the Vizio M7 Series Quantum 2021 mainly because the P Series is a higher-end TV. The P Series has a 120Hz panel while the M7 is limited to a 60Hz panel, but each have VRR support. HDR content looks better on the P Series because it gets brighter and has better local dimming. The P Series has a quicker response time, but you may notice more image duplication because its backlight flickers at 120Hz, while the M7 flickers at 480Hz.

Vizio P Series Quantum 2019
65" 75"

The Vizio P Series Quantum 2020 is an upgrade over the Vizio P Series Quantum 2019. There are a few improvements on the 2020, such as a higher contrast ratio, higher peak brightness, and lower input lag. However, our unit of the 2020 has a lot more screen uniformity issues. That said, screen uniformity varies between individual units.

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