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Vizio Quantum Pro QLED TV Review

Tested using Methodology v1.11
Reviewed Oct 19, 2023 at 02:24 pm
Latest change: Writing modified Nov 22, 2023 at 01:14 pm
Vizio Quantum Pro QLED Picture
7.5
Mixed Usage
Value for price beaten by
: Hisense U7N [U7, U75N]
7.6
TV Shows
Value for price beaten by
: Hisense U7N [U7, U75N]
7.8
Sports
Value for price beaten by
: Hisense U7N [U7, U75N]
8.2
Video Games
Value for price beaten by
: Hisense U7N [U7, U75N]
6.9
HDR Movies
Value for price beaten by
: TCL Q7/Q750G QLED
8.2
HDR Gaming
Value for price beaten by
: Hisense U7N [U7, U75N]
8.5
PC Monitor
Value for price beaten by
: Hisense U7N [U7, U75N]

The Vizio Quantum Pro QLED is a midrange LED TV released in 2023. One of only two Vizio TVs released in 2023, at least at the time of publication, it replaces the Vizio M Series Quantum X 2022 and sits above the Vizio Quantum QLED. It offers a full array local dimming feature, Quantum Dot colors, and a wide selection of gaming features, including HDMI 2.1 bandwidth for 4k @ 120Hz gaming from the latest consoles. Unfortunately, it's still powered by Vizio's lackluster SmartCast smart interface. It's only available in two sizes: 65-inch and 75-inch, so there's not a lot of variety for different room sizes.

Our Verdict

7.5 Mixed Usage

The Vizio Quantum Pro is a good TV for most uses. It's good for watching shows or sports in a bright room thanks to its high peak brightness and excellent reflection handling, so you don't have to worry about glare. It's also great for gaming thanks to its great response time, low input lag, and advanced gaming features, including support for VRR and 4k @ 120Hz gaming. It's just okay for watching movies in a dark room, though, as it has low native contrast, just okay accuracy, and it can't smooth out low-quality content.

Pros
  • Wide viewing angle.
  • High peak brightness and excellent reflection handling.
Cons
  • Buggy SmartCast interface.
7.6 TV Shows

The Vizio Quantum Pro is good for watching shows in a bright room. With its high peak brightness and excellent reflection handling, glare isn't an issue, even if you have a lot of bright lights or windows in the room. It also has a wide viewing angle, so you can walk around the room with the TV on, and the image remains consistent. On the other hand, its image processing features are very basic, and it can't smooth out or upscale low-quality or low-resolution content well. Its smart features are also limited, as you can't add new streaming channels, and only a few are available.

Pros
  • Wide viewing angle.
  • High peak brightness and excellent reflection handling.
Cons
  • Buggy SmartCast interface.
  • Limited selection of streaming apps.
  • Very limited image processing.
7.8 Sports

The Vizio Quantum Pro is very good for watching sports in a bright room. It gets very bright in SDR and has excellent reflection handling, so glare isn't an issue if you're watching the big game in a bright, sunny living room. It also has a wide viewing angle, so you can watch the game with a large group of friends, and everyone will enjoy a consistent image, even if they're not sitting directly in front of the TV. Motion is clear and easy to make out, thanks to its quick response time. Unfortunately, there's some noticeable dirty screen effect in the center, and the smart interface has a very limited selection of apps, and many sports apps aren't available.

Pros
  • Wide viewing angle.
  • High peak brightness and excellent reflection handling.
  • Quick response time.
Cons
  • Buggy SmartCast interface.
  • Limited selection of streaming apps.
  • Noticeable dirty screen effect.
  • Very limited image processing.
8.2 Video Games

The Vizio Quantum Pro is an impressive TV for gaming. It has incredibly low input lag, ensuring a responsive gaming experience. It also supports 4k @ 120Hz gaming from the latest consoles and PC GPUs, but only on one port, so you can't take full advantage of multiple consoles. It has a quick response time, resulting in clear motion with very little motion blur behind fast-moving objects. It also supports a 1080p @ 240Hz mode, delivering smoother motion and lower input lag at the expense of visual fidelity. It doesn't look as good in a dark room, though, as it has a low native contrast ratio, and there's a lot of distracting blooming around bright highlights with the local dimming feature enabled.

Pros
  • High peak brightness and excellent reflection handling.
  • Low input lag.
  • Quick response time.
  • Supports 4k @ 120Hz gaming.
Cons
  • Low native contrast ratio and poor local dimming implementation.
  • Only one HDMI 2.1 bandwidth port.
6.9 HDR Movies

The Vizio Quantum Pro is just okay for watching movies in a dark room. It has a low native contrast ratio, and the local dimming feature is very limited, so there's distracting blooming around bright highlights in dark scenes. It gets decently bright, so bright scenes stand out well, and it has an excellent color gamut, so colors are vibrant and stand out well. The image processor on this TV is very basic, though, and it can't smooth out low-quality content or upscale low-resolution movies on DVD very well.

Pros
  • Excellent color gamut.
Cons
  • Low native contrast ratio and poor local dimming implementation.
  • Buggy SmartCast interface.
  • Limited selection of streaming apps.
8.2 HDR Gaming

The Vizio Quantum Pro is great for gaming in HDR. Overall, it delivers an impressive gaming experience with low input lag, a quick response time, and support for advanced gaming features like VRR and 4k @ 120Hz. It has an excellent color gamut in HDR and decent peak brightness, so it's very colorful and vibrant in bright scenes. It doesn't look very good in a dark room, though, as it has a low native contrast ratio and a very limited local dimming feature, and there's distracting blooming around bright highlights in dark scenes.

Pros
  • Excellent color gamut.
  • Low input lag.
  • Quick response time.
  • Supports 4k @ 120Hz gaming.
Cons
  • Low native contrast ratio and poor local dimming implementation.
  • Only one HDMI 2.1 bandwidth port.
8.5 PC Monitor

The Vizio Quantum Pro is great for use as a PC monitor, but there are a few issues with it. It has a great response time and exceptional low input lag, resulting in a smooth, responsive desktop experience. Text from a PC looks good in most supported resolutions. It has a wide viewing angle, which is important as this ensures that the sides of the screen remain uniform when you're sitting close to the TV. It looks good in a bright room, with high peak brightness and excellent reflection handling that ensures glare isn't an issue. On the other hand, it's a poor choice for a dark room, as it has a very low native contrast ratio, and the local dimming feature doesn't work properly when connected to a PC.

Pros
  • Wide viewing angle.
  • High peak brightness and excellent reflection handling.
  • Low input lag.
  • Chroma 4:4:4 is displayed properly for clear text from a PC.
  • Quick response time.
  • Supports 4k @ 120Hz gaming.
Cons
  • Local dimming doesn't work properly when connected to a PC.
  • Noticeable dirty screen effect.
  • Only one HDMI 2.1 bandwidth port.
  • 7.5 Mixed Usage
  • 7.6 TV Shows
  • 7.8 Sports
  • 8.2 Video Games
  • 6.9 HDR Movies
  • 8.2 HDR Gaming
  • 8.5 PC Monitor
  1. Updated Nov 22, 2023: We bought and tested the Vizio Quantum QLED, which is the step-down model from this one. We added a few comparisons below in the HDR Brightness and Reflections sections of the review.
  2. Updated Oct 19, 2023: Review published.
  3. Updated Oct 13, 2023: Early access published.
  4. Updated Oct 02, 2023: Our testers have started testing this product.
  5. Updated Sep 28, 2023: The product has arrived in our lab, and our testers will start evaluating it soon.
  6. Updated Sep 22, 2023: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We bought and tested the 65-inch Vizio Quantum Pro, and these results are also valid for the 75-inch size. There's no difference in performance between the two sizes, but Vizio advertises the 75-inch size to have a slightly more powerful picture processor.

Size Model Number Picture Processor
65" VQP65C-84 IQ Ultra Processor
75" VQP75C-84 IQ Ultra+ Processor

You can see the label for our unit here.

Compared To Other TVs

The Vizio Quantum Pro is a basic mid-range TV with a good selection of gaming features but disappointing picture quality in a dark room. Its smart interface is buggy and limited, so an external streaming device like an Apple TV is a must-have with this TV. Overall, it's a bit disappointing for the price, and competing models like the Hisense U7K and the TCL Q7/Q750G QLED offer better performance overall and a smoother user experience.

See our recommendations for the best smart TVs, the best 65-inch TVs, and the best gaming TVs.

TCL Q7/Q750G QLED
55" 65" 75" 85"

The TCL Q7/Q750G QLED is better than the Vizio Quantum Pro QLED. The TCL has a much higher native contrast ratio, so dark scenes look better, with deeper blacks and less blooming around bright highlights. The TCL also has much better smart features, with a significantly wider selection of streaming apps and a smoother user experience.

Hisense U7K [U7, U75K]
55" 65" 75" 85"

The Hisense U7K is much better than the Vizio Quantum Pro QLED. The Hisense has much higher contrast, resulting in deeper blacks and less blooming around bright highlights in dark scenes. The Hisense also has better image processing and handles low-quality or low-resolution content better, resulting in less noticeable macro-blocking and pixelization. Finally, the Hisense has much better smart features, with a significantly wider selection of streaming apps and a smoother user experience overall.

Hisense U8/U8K
55" 65" 75" 85" 100"

The Hisense U8/U8K is significantly better than the Vizio Quantum Pro QLED. The Hisense has much better contrast and a significantly better local dimming feature, so dark scenes look better, with much less blooming around bright highlights. The Hisense also gets much brighter, so bright highlights in HDR stand out better, resulting in a more impactful HDR experience overall. Finally, the Hisense has a much better smart interface, with a wider selection of apps and a smoother user experience.

Vizio Quantum QLED
55" 65" 75"

The step-up Vizio Quantum Pro QLED is significantly better than the Vizio Quantum QLED. The Pro model gets a lot brighter, so it can handle more glare in a bright room, and HDR looks more vivid overall. The Pro also adds a full array local dimming feature, and while this increases the amount of blooming around bright objects, it also drastically increases the TV's dynamic range, so bright highlights stand out in bright scenes, and dark scenes aren't as washed out.

Vizio M Series Quantum X 2022
50" 65" 75"

The Vizio M Series Quantum X 2022 and the Vizio Quantum Pro QLED have different strengths, so the best one depends on your viewing conditions. They have similar picture quality overall, but the Quantum Pro looks better in a bright room or if you have a wide seating arrangement, as it has a wider viewing angle and better reflection handling. The M Series, on the other hand, is a much better choice for a dark or moderately-lit room, as it has much higher contrast and better black uniformity.

+ Show more

Test Results

perceptual testing image
Design
Design
Style
Curved No

The overall design of the Vizio Quantum Pro is quite nice for a TV at this price point. The bezels are incredibly thin on three sides, with just a small black border between the outer frame and the first pixels. The bezel is a bit thicker at the bottom, but it's still not distracting.

Design
Accelerated Longevity Test
Uniformity Pictures N/A
Design
Stand

The flat feet are set near the ends of the TV, so you'll need a large cabinet if you're not planning on wall-mounting the TV, and there's no narrow position. There's a soundbar position (shown here) that lifts the TV higher, so you can place a soundbar in front of it without blocking the screen.

Footprint of the 65" stand: 50.2" x 12.6". In the lower position, the TV is only 1.7" above the table, but in the soundbar mode there's 3.3" between the table and the screen.

Design
Back
Wall Mount VESA 400x300

The back of the Vizio Quantum Pro is small and looks cheaper than the rest of the TV. The inputs face the side and are easy to access, even when the TV is wall-mounted. There's nothing to help with cable management, though.

Design
Borders
Borders 0.31" (0.8 cm)
Design
Thickness
Max Thickness 3.11" (7.9 cm)
7.0
Design
Build Quality

The TV has decent build quality. It's made of a mix of plastic and metal, and it feels solid overall. There's some flex in the back panel, but this is common and won't cause any issues. There are a few spots on our panel that look like dust or contaminants behind the panel screen. There's also a small scratch on the bottom of our panel.

Picture Quality
7.0
Picture Quality
Contrast
Contrast
14,742 : 1
Native Contrast
1,606 : 1

The Vizio Quantum Pro has a very low native contrast ratio, so with local dimming disabled, blacks are raised and appear washed out in dimmer scenes. The local dimming feature does a decent job of improving contrast, but due to the large size of each zone, it's only effective in very dark scenes.

6.5
Picture Quality
Blooming

Unfortunately, there's noticeable blooming around any bright highlights in darker scenes. In complicated scenes, the local dimming feature does almost nothing, and the entire backlight is on. In dark scenes with small highlights, like a starfield or street lamps in a dark alley, those lights create a large blooming zone around them, and it's very distracting.

6.0
Picture Quality
Lighting Zone Transitions
Local Dimming
Yes
Backlight
Full-Array
Dimming Zones Count Of Tested TV
40

Unfortunately, the zone transitions are extremely noticeable and distracting. The algorithms can't keep up with fast-moving objects, so bright objects moving across a dark background aren't always lit up properly, with the bright zone turning on after the object has already moved to a different zone. With larger objects, there's significant blooming, as the algorithms take too long to turn off, leaving a long trail of blooming behind fast-moving objects.

The local dimming feature is even worse when connected to a 'PC'. There's no way around this, as the TV automatically detects when the source is a PC, and the local dimming feature is terrible in that mode. You can see two videos of the local dimming feature in action on a PC here:

7.0
Picture Quality
Contrast And Dark Details In Game Mode

Switching to Game Mode doesn't make a significant difference in dark scene performance, unless you're gaming from a PC, which still doesn't work properly. The PC issue mentioned in the Lighting Zone Transitions section doesn't impact console gaming. Local dimming works properly from a PS5 or Xbox Series X, or any other console. In the 'Game' Picture Mode, the Active Full Array setting, which controls the local dimming feature, is locked to 'Medium'.

7.3
Picture Quality
HDR Brightness
Hallway Lights (~1950 cd/m²)
457 cd/m²
Yellow Skyscraper (~700 cd/m²)
181 cd/m²
Landscape Pool (~300 cd/m²)
271 cd/m²
Peak 2% Window
667 cd/m²
Peak 10% Window
898 cd/m²
Peak 25% Window
806 cd/m²
Peak 50% Window
639 cd/m²
Peak 100% Window
574 cd/m²
Sustained 2% Window
654 cd/m²
Sustained 10% Window
874 cd/m²
Sustained 25% Window
798 cd/m²
Sustained 50% Window
638 cd/m²
Sustained 100% Window
572 cd/m²
Automatic Brightness Limiting (ABL)
0.024

The peak brightness in HDR is just decent, but it's a lot brighter than the step-down Vizio Quantum QLED. Very bright scenes are bright enough to stand out well, and it delivers an impactful HDR experience overall. Due to the limited effectiveness of the local dimming feature, though, small specular highlights don't stand out at all and are often dimmed artificially by the TV.

These measurements are after calibrating the HDR white point with the following settings:

  • HDR Picture Mode: Calibrated
  • Tone Mapping: 100
  • Active Full Array: High
  • Color Temperature: Warm
  • Gamma: 2.2
  • Color: 50

7.0
Picture Quality
HDR Brightness In Game Mode
Hallway Lights (~1950 cd/m²)
467 cd/m²
Yellow Skyscraper (~700 cd/m²)
155 cd/m²
Landscape Pool (~300 cd/m²)
230 cd/m²
Peak 2% Window
655 cd/m²
Peak 10% Window
757 cd/m²
Peak 25% Window
746 cd/m²
Peak 50% Window
608 cd/m²
Peak 100% Window
547 cd/m²
Sustained 2% Window
648 cd/m²
Sustained 10% Window
746 cd/m²
Sustained 25% Window
738 cd/m²
Sustained 50% Window
608 cd/m²
Sustained 100% Window
546 cd/m²
Automatic Brightness Limiting (ABL)
0.018

The brightness in the 'Game' Picture Mode is slightly dimmer than in the 'Calibrated' mode. This is mainly caused by the Active Full Array setting, which controls the local dimming feature, which is locked to the 'Medium' setting in 'Game'.

These measurements are after calibrating the HDR white point with the following settings:

  • HDR Picture Mode: Game
  • Tone Mapping: 100
  • Active Full Array: Medium
  • Color Temperature: Warm
  • Gamma: 2.2
  • Color: 50

7.8
Picture Quality
PQ EOTF Tracking
600 Nit Tracking Delta
0.0143
1000 Nit Tracking Delta
0.0143
4000 Nit Tracking Delta
0.0143

The PQ EOTF tracking on the Vizio Quantum Pro is good overall, but there are a few noticeable issues. Near-blacks and shadow details are raised due to the low contrast ratio and the large size of each local dimming zone. Shadow details are crushed a bit, and midtones are raised slightly. There's no tone mapping, though, as there's a very sharp cutoff at the TV's peak brightness. This allows the TV to deliver its full peak brightness with more content, but crushes bright details.

8.8
Picture Quality
SDR Brightness
Real Scene Peak Brightness
676 cd/m²
Peak 2% Window
527 cd/m²
Peak 10% Window
961 cd/m²
Peak 25% Window
955 cd/m²
Peak 50% Window
771 cd/m²
Peak 100% Window
607 cd/m²
Sustained 2% Window
522 cd/m²
Sustained 10% Window
930 cd/m²
Sustained 25% Window
930 cd/m²
Sustained 50% Window
756 cd/m²
Sustained 100% Window
603 cd/m²
Automatic Brightness Limiting (ABL)
0.035

The peak brightness in SDR is excellent. It's bright enough to easily overcome glare, which is great if you have a lot of windows or bright lights in your room.

These measurements are after calibration with the following settings:

  • Picture Mode: Calibrated
  • Active Full Array: High
  • Color Temperature: Warm
  • Gamma: 2.2

8.6
Picture Quality
Color Gamut
Wide Color Gamut
Yes
DCI P3 xy
96.87%
DCI P3 uv
97.20%
Rec 2020 xy
73.02%
Rec 2020 uv
77.54%

The Vizio Quantum Pro has an amazing color gamut. It displays nearly the entire DCI-P3 color space used by most current HDR content, but the accuracy is a bit off, and most colors appear undersaturated. This is especially noticeable as the color accuracy is worse with undersaturated colors. It has decent coverage of the wider Rec. 2020 color space, but again, the accuracy is poor, and saturated colors, especially greens and blues, are noticeably inaccurate.

8.0
Picture Quality
Color Volume
1,000 cd/m² DCI P3 Coverage ITP
74.9%
10,000 cd/m² Rec 2020 Coverage ITP
34.7%
White Luminance
650 cd/m²
Red Luminance
144 cd/m²
Green Luminance
453 cd/m²
Blue Luminance
46 cd/m²
Cyan Luminance
502 cd/m²
Magenta Luminance
182 cd/m²
Yellow Luminance
600 cd/m²

The Vizio Quantum Pro TV has great color volume. Colors are bright and vibrant for the most part, but it can't display dark saturated colors properly due to its low contrast ratio.

6.8
Picture Quality
Pre Calibration
White Balance dE
4.33
Color dE
2.94
Gamma
1.93
Color Temperature
6,081 K
Picture Mode
Calibrated
Color Temp Setting
Warm
Gamma Setting
2.2

Unfortunately, even after switching the TV to the most accurate mode out-of-the-box, the Vizio Quantum Pro has just okay accuracy in SDR. The white balance is bad, as almost all shades of gray are displayed incorrectly. Gamma isn't close to the 2.2 target at all, and bright scenes especially are significantly brighter than they should be. Most colors aren't noticeably off, but pale shades that are close to white are a bit off.

8.9
Picture Quality
Post Calibration
White Balance dE
1.36
Color dE
1.55
Gamma
2.19
Color Temperature
6,617 K
White Balance Calibration
20 point
Color Calibration
Yes

The TV's calibration system is very easy to use, and the TV is easy to calibrate overall. After calibration, the SDR accuracy is significantly better, but the white balance adjustments for blue are still off in brighter shades of gray.

You can see the full settings used for our calibration here.

6.8
Picture Quality
Gray Uniformity
50% Std. Dev.
4.045%
50% DSE
0.226%
5% Std. Dev.
0.434%
5% DSE
0.093%

The Vizio Quantum Pro has just okay gray uniformity. The sides of the screen are noticeable darker than the center, which is noticeable with any content. There's also noticeable dirty screen effect in the center of the screen, which is distracting for sports fans or if you're browsing the web.

5.9
Picture Quality
Black Uniformity
Std. Dev.
2.167%
Native Std. Dev.
1.640%

Unfortunately, the black uniformity on this TV is disappointing. The screen is very cloudy with local dimming disabled, with multiple bright spots across the screen. Enabling local dimming reduces the amount of cloudiness in dark areas of the screen, but there's significant blooming around bright spots on the screen due to the low number of dimming zones. On a PC, the local dimming feature doesn't work properly, and all zones remain lit.

7.5
Picture Quality
Viewing Angle
Color Washout
31°
Color Shift
61°
Brightness Loss
39°
Black Level Raise
70°
Gamma Shift
36°

The Vizio Quantum Pro has a good viewing angle. The image remains consistent when viewed from the sides, so it's a good choice for a wide seating arrangement or if you like to move around the house with the TV on.

8.7
Picture Quality
Reflections
Screen Finish
Semi-gloss
Total Reflections
2.5%
Indirect Reflections
0.2%
Calculated Direct Reflections
2.3%

The reflection handling on this TV is surprisingly excellent, much better than the step-down Vizio Quantum QLED. The semi-gloss coating is very effective at reducing the intensity of bright reflections, and since it also gets very bright, glare isn't an issue in a bright room.

7.5
Picture Quality
HDR Native Gradient
100% Black to 50% Gray
6.0
50% Gray to 100% White
6.0
100% Black to 50% Red
8.0
50% Red to 100% Red
10
100% Black to 50% Green
6.0
50% Green to 100% Green
6.0
100% Black to 50% Blue
8.0
50% Blue to 100% Blue
10

Overall, gradients in HDR are displayed well on this TV. It struggles a bit more with all shades of green and gray, which both show some banding, but it's not too bad.

5.6
Picture Quality
Low-Quality Content Smoothing
Smoothing
4.5
Detail Preservation
8.0

The low-quality content smoothing on this TV is disappointing. The Contour Smoothing setting, which is supposed to help smooth out macro-blocking and pixelization in dark scenes, doesn't appear to actually do anything, as there's very little difference between setting it to 'High' and disabling it entirely.

5.5
Picture Quality
Upscaling: Sharpness Processing

The sharpness processing on this TV is sub-par. Text and fine details aren't upscaled well and look soft. Some fine details are lost, and upscaled text is hard to read.

Sharpness processing was calibrated for low-resolution or low-bitrate content, with no over-sharpening, with the following setting:

  • Sharpness: 25

Picture Quality
Pixels
Subpixel Layout
RGB
Type LED
Sub-Type
IPS

The TV has an RGB sub-pixel layout, which helps with text clarity when using it as a PC monitor. You can read more about text clarity here.

Motion
8.3
Motion
Response Time
80% Response Time
4.4 ms
100% Response Time
11.1 ms

The Vizio Quantum Pro has a great response time. There's very little blur behind fast-moving objects, as the average transition time is very quick. There's noticeable overshoot when going to or from black, resulting in some inverse ghosting in shadows.

6.0
Motion
Flicker-Free
Flicker-Free
No
PWM Dimming Frequency
240 Hz

The Vizio Quantum Pro flickers at a fixed frequency at all backlight settings below maximum. The flicker frequency is the same in all picture modes.

Motion
Black Frame Insertion (BFI)
Optional BFI
Yes
Min Flicker For 60 fps
60 Hz
60Hz For 60 fps
Yes
120Hz For 120 fps
No
Min Flicker for 60 fps in Game Mode
60 Hz

There's an optional backlight strobing feature, commonly known as black frame insertion. This feature is extremely effective at reducing the amount of persistence blur, resulting in much clearer motion. The timing is a bit off, though, as there's a secondary flicker that creates a trailing double and triple-image behind fast-moving objects.

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

This TV has an optional motion interpolation feature to improve motion clarity. It's okay overall, but like many TVs, it struggles with fast-paced scenes.

7.0
Motion
Stutter
Frame Hold Time @ 24 fps
30.6 ms
Frame Hold Time @ 60 fps
5.6 ms

Due to this TV's relatively quick response time, low framerate content has some noticeable stutter, especially in slow panning shots.

8.9
Motion
24p Judder
Judder-Free 24p
Yes
Judder-Free 24p via 60p
No
Judder-Free 24p via 60i
Yes
Judder-Free 24p via Native Apps
Yes

The Vizio Quantum Pro can remove judder from most sources, including native 24p sources like a Blu-ray player or streaming stick with a 'Match Frame Rate' feature. It also removes judder from the native apps or from an external 60Hz device, like a cable box, but only with an interlaced signal. Most cable boxes that are locked to 60Hz support either 720p or 1080i; for a smooth movie-watching experience, you should set your box to 1080i in this case, as it can't remove judder from the 720p source.

9.6
Motion
Variable Refresh Rate
Native Refresh Rate
120 Hz
Variable Refresh Rate
Yes
HDMI Forum VRR
Yes
FreeSync
Yes
G-SYNC Compatible
Yes
4k VRR Maximum
120 Hz
4k VRR Minimum
< 20 Hz
1080p VRR Maximum
240 Hz
1080p VRR Minimum
< 20 Hz
1440p VRR Maximum
120 Hz
1440p VRR Minimum
< 20 Hz
VRR + Local Dimming Yes

This TV supports a variable refresh rate, ensuring motion remains smooth and nearly tear-free when gaming, even when your frame rate fluctuates in busier scenes. It supports the three main types of VRR across a wide refresh rate range, so you don't have to worry about compatibility.

Inputs
9.4
Inputs
Input Lag
1080p @ 60Hz
14.5 ms
1080p @ 60Hz Outside Game Mode
38.9 ms
1080p @ 120Hz
38.9 ms
1080p @ 144Hz
N/A
1440p @ 60Hz
N/A
1440p @ 120Hz
6.1 ms
1440p @ 144Hz
N/A
4k @ 60Hz
14.0 ms
4k @ 60Hz + 10-Bit HDR
14.0 ms
4k @ 60Hz @ 4:4:4
13.9 ms
4k @ 60Hz Outside Game Mode
59.8 ms
4k @ 60Hz With Interpolation
136.3 ms
4k @ 120Hz
6.2 ms
4k @ 144Hz
N/A
8k @ 60Hz
N/A

The Vizio Quantum Pro has low enough input lag for a responsive gaming experience, but it's a bit higher than most TVs on the market. The 1080p @ 120Hz input lag is very high regardless of source, this was tested with multiple PCs, and the results are very consistent. There seems to be an issue with this format only, as 1080p @ 240Hz has just 5.2ms of input lag. Unfortunately, due to compatibility issues mentioned in the Supported Resolutions section, we weren't able to run the input lag test at 1440p @ 60Hz.

9.3
Inputs
Supported Resolutions
Resolution 4k
480p @ 59.94Hz (Widescreen)
Yes
720p @ 59.94Hz
Yes
1080p @ 60Hz @ 4:4:4
Yes
1080p @ 120Hz
Yes
1080p @ 144Hz
No
1440p @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 144Hz
No
4k @ 60Hz
Yes
4k @ 60Hz @ 4:4:4
Yes
4k @ 120Hz
Yes
4k @ 120Hz @ 4:4:4
No
4k @ 144Hz
No
8k @ 30Hz or 24Hz
No
8k @ 60Hz
No

The Vizio Quantum Pro supports most common formats at up to 120Hz, and 1080p signals at 240Hz. However, Vizio's HDMI implementation is buggy, causing some strange compatibility issues with certain devices. On Windows PCs with NVIDIA graphics cards, 1440p @ 60Hz has to be forced by changing the TV's HDMI Mode setting to 'Compatibility', but this disables HDR and VRR entirely, so you're limited to SDR with a fixed 60Hz refresh rate. This format works automatically with some external streaming devices like an Apple TV but not at all on Windows PCs with AMD graphics cards. 1440p @ 120Hz works fine with the 'Auto' HDMI Mode setting on the TV, but again, only with NVIDIA cards.

As mentioned above, this TV also supports a 1080p @ 240Hz mode, resulting in much smoother motion and less input lag. It achieves this by implementing a resolution-halving mode, so although it doesn't skip frames, it doesn't fully display each frame. This isn't noticeable in fast action games, but text isn't rendered properly.

Inputs
PS5 Compatibility
Auto Low Latency Mode (ALLM)
Yes
4k @ 120Hz
Yes
1440p @ 120Hz
No
1080p @ 120Hz
Yes
HDR
Yes
VRR
Yes

This TV supports most common formats on the PS5. 1440p @ 120Hz isn't supported at all, which is unusual. 1440p @ 60Hz can be forced by changing the TV's HDMI Mode setting to 'Compatibility', but this disables HDR and VRR entirely, so you're limited to SDR with a fixed 60Hz refresh rate.

Inputs
Xbox Series X|S Compatibility
Auto Low Latency Mode (ALLM)
Yes
4k @ 120Hz
Yes
1440p @ 120Hz
No
1080p @ 120Hz
Yes
HDR
Yes
VRR
Yes

This TV supports most common formats on the Xbox Series S|X. 1440p @ 120Hz isn't supported at all, which is unusual. 1440p @ 60Hz can be forced by changing the TV's HDMI Mode setting to 'Compatibility', but this disables HDR and VRR entirely, so you're limited to SDR with a fixed 60Hz refresh rate.

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)
CEC Yes
HDCP 2.2 Yes (HDMI 1,2,3,4)
ATSC Tuner
1.0
USB 3.0
No
Variable Analog Audio Out No
Wi-Fi Support Yes (2.4 GHz, 5 GHz)

Only one of the HDMI inputs supports HDMI 2.1 bandwidth for 4k @ 120Hz gaming. Thankfully, the eARC port is on port 1, so you can still take full advantage of a current-gen console if you're using the eARC feature. This TV also supports Wi-Fi 6E, delivering higher speeds if your router supports it.

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 0
Component In 0
Composite In 0
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0
Inputs
Audio Passthrough
ARC/eARC Port
eARC
eARC: Dolby Atmos Over Dolby Digital Plus
Yes
eARC: Dolby Digital Plus 7.1
Yes
eARC: LPCM 7.1 Over Dolby MAT
Yes
eARC: Dolby TrueHD 7.1
Yes
eARC: DTS:X Over DTS-HD MA
Yes
eARC: DTS-HD Master Audio 7.1
Yes
eARC: LPCM Channels (Bitstream)
2.0
ARC: Dolby Digital 5.1
Yes
ARC: DTS 5.1
Yes
Optical: Dolby Digital 5.1
Yes
Optical: DTS 5.1
Yes

This TV supports eARC, or Enhanced Audio Return Channel, allowing you to pass high-quality, uncompressed audio to a compatible receiver or soundbar. It supports most of the common audio formats, so you won't have any issues using it to watch movies on Blu-ray, but it's limited to 2 channels on devices that only output LPCM, like the Nintendo Switch.

Sound Quality
6.7
Sound Quality
Frequency Response
Low-Frequency Extension
95.14 Hz
Std. Dev. @ 70
2.70 dB
Std. Dev. @ 80
3.23 dB
Std. Dev. @ Max
4.57 dB
Max
85.0 dB SPL
Dynamic Range Compression
3.50 dB

The Vizio Quantum Pro has an okay frequency response. It has a well-balanced sound profile at moderate volume levels, so dialogue is clear and easy to understand, but there's a bit of compression at high volume levels. It can't get very loud, either, so it's not suitable for noisy environments.

6.2
Sound Quality
Distortion
Weighted THD @ 80
0.098
Weighted THD @ Max
0.277
IMD @ 80
18.10%
IMD @ Max
34.98%

Unfortunately, this TV has mediocre distortion performance. There's noticeable distortion even at moderate listening levels, and it's more noticeable at max volume.

Smart Features
7.0
Smart Features
Interface
Smart OS SmartCast
Version 55.40
Ease of Use
Easy
Smoothness
Average
Time Taken to Select YouTube
3 s
Time Taken to Change Backlight
3 s
Advanced Options
Many

The Vizio SmartCast platform differs from other operating systems as the apps are web-based, and the interface feels slower. It's easy to learn, but there are a few bugs, as the SmartCast was unavailable when we first started the TV, and we had to reset it for it to work.

0
Smart Features
Ad-Free
Ads
Yes
Opt-out
No
Suggested Content in Home
Yes
Opt-out of Suggested Content
No

Unfortunately, like most TVs, there are ads throughout the SmartCast user interface, and they can't be disabled.

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

The Vizio SmartCast platform doesn't have an app store. There's an okay selection of apps built-in to the TV, and you can cast content from your phone if your favorite streaming service isn't available.

6.5
Smart Features
Remote
Size
Medium
Voice Control
Many Features
CEC Menu Control
Yes
Other Smart Features
No
Remote App VIZIO Mobile

The included remote is simple. It has all the basic functions, including quick-access buttons to popular streaming services, and there's a mic for voice control. You can ask it to open apps and switch inputs, but you can't use it to search for content in apps or change the TV's settings.

Smart Features
TV Controls

A single button on the bottom left side turns it on/off and changes inputs.

Smart Features
In The Box

  • Power cable
  • Remote control
  • 2x AAA batteries
  • User guides

Smart Features
Misc
Power Consumption 29 W
Power Consumption (Max) 275 W
Firmware 8.540.32.1-1