Vizio Mini LED Quantum 4K  TV Review

The Vizio Mini LED Quantum Smart TV has okay peak brightness in HDR. Most scenes are bright enough to deliver an impactful HDR experience. Small, specular highlight details are nowhere near as bright as they should be, though, so the screen looks flat most of the time. There's some variation in brightness with different scenes, but it's not too bad.

These results are with Local Dimming set to 'Standard', as it delivers the best overall picture quality. Setting Local Dimming to 'Bright' increases the peak brightness of most real scenes by about 20-30 nits, and slides by up to 100 nits, but it also causes a distracting inverse pattern with some scenes, so it's not recommended.

Switching to Game Mode has no significant impact on HDR brightness.

The Vizio Mini LED Quantum 4K has good peak brightness in SDR. It's bright enough to overcome glare in a moderately-lit room.

The Vizio Mini LED Quantum Smart TV has sub-par contrast. The native contrast of the panel is very low, resulting in raised blacks in most scenes. Its local dimming feature does a sub-par job improving black levels, so most dark scenes still look washed out.

Due to the relatively low zone count on this TV's local dimming feature, the zone precision is disappointing. There's a noticeable glow around bright parts of the scene, or if you have subtitles.

Setting Local Dimming to 'Standard' delivers the best results in HDR, and setting it to 'Bright' delivers the best results in SDR. Unfortunately, there's an odd issue when using the 'Bright' setting in HDR, so it's not recommended.

Zone transitions are mediocre on this TV. The processor struggles to keep up with fast-moving objects, so there's a noticeable glow trailing behind fast-moving objects, and the leading edge is a bit darker than it should be as the zone is too slow to turn on. There's also a slight flicker effect as bright objects move between zones.

Switching to Game Mode has no noticeable impact on dark details or contrast.

Unfortunately, this TV has disappointing black uniformity. The local dimming feature does an okay job evening out the backlight, but there's a noticeabe halo effect around bright spots that gives it an uneven look. With local dimming disabled there are noticeable bright patches across the screen.

This TV has okay color volume in SDR. It has good coverage of the DCI-P3 color space, displaying most colors well except for saturated reds. There's also very little variation in color saturation in lighter scenes. It struggles more with content mastered in the wider BT.2020 color space, and its coverage is very uneven, as it handles midtones better than bright scenes.

The color volume in HDR is decent. It's mainly limited by its incomplete gamut coverage and relatively low brightness, and it struggles to display bright, saturated colors properly.

The SDR accuracy on this TV is very good before calibration. The white balance is the biggest issue, as there's too much red in most shades and the TV has a slightly warm color temperature. Most colors are displayed accurately. Gamma tracks a bit too high on average, and midtones and bright parts of the scene are crushed a bit, but it's not too bad.

This TV is very easy to calibrate, and it's nearly perfect after. The white balance is perfect, the color temperature is just a touch cold, and gamma tracks perfectly. Most colors are displayed perfectly, but saturated blues are slightly off.

See our full calibration settings.

This TV has decent accuracy in HDR before calibration. The white balance is decent, but midtones are bit off and there's slightly too much blue in lighter shades. Color mapping is very good overall, but there are significant luminance errors. The color temperature is a bit too cold, and there's a very slight blue tint out of the box.

Unfortunately, this TV doesn't calibrate well in HDR, and a full calibration has almost no impact on HDR accuracy.

Unfortunately, the Vizio Mini LED Quantum 4K has bad PQ EOTF tracking. Nearly all shadow details and midtones are raised brighter than they should be. There's also a very sharp cutoff at the TV's peak brightness for all content, resulting in a loss of fine details in bright parts of the scene.

These results are with Local Dimming set to 'Standard' and a custom window size. The TV tracks EOTF much better when sent a 10% window, which is the size most TV reviewers use to measure EOTF tracking. The EOTF tracking is also considerably worse with Local Dimming set to 'Bright' instead, but the overall peak brightness doesn't change much.

Unfortunately, the smoothing options on this TV don't appear to do anything at all. They don't reduce macro blocking or pixelization from low-quality streams at all.

The upscaling on this TV is just okay. The image is a bit soft overall, and text and fine details is hard to make out in some scenes.

The Vizio Mini LED Quantum Smart TV has mediocre gradient handling. There's very noticeable banding in dark shades of gray and green, and there's minor banding in everything else.

The input lag on this TV is great. There's very little delay when gaming at 120Hz with a 1080p resoution. It's also very responsive with 4k gaming, but it's a bit higher as the TV is limited to 60Hz at that resolution.

This TV supports most common formats, up to a maximum of 4k @ 60Hz or 1080p @ 120Hz. The TV doesn't expose 1080p @ 120Hz as a supported resolution when connected to a PC, but it works when forced manually. Chroma 4:4:4 signals are displayed properly across all supported formats, which is important for clear text from a PC.

The TV supports FreeSync, HDMI Forum VRR, and G-SYNC Compatible, ensuring a nearly tear-free gaming experience from any VRR-enabled source. It's a bit limited, though, as the VRR range with a 4k source is very limited, so it doesn't support Low Framerate Compensation (LFC) at 4k, only at 1080p. Unfortunately, there's noticeable tearing at around 55fps whenever a source handshakes at 60Hz. This occurs with both a 4k and 1080p resolution, as long as the initial handshake is done at 60Hz.

The CAD at this TV's max 4k refresh rate of 60Hz is poor. Nearly all transitions are slow to complete, resulting in very blurry motion. There's no overshoot, though, which is good, and very dark shadow details are preserved well with no noticeable inverse ghosting.

This TV only supports 120Hz at a lower 1080p resolution.

This TV is limited to a 60Hz refresh rate. These results are the same as the CAD In Game Mode @ Max Refresh Rate test.

This TV can't fully take advantage of the PS5, as it only supports 120Hz gaming with a 1080p signal. When gaming at 4k you're limited to 60Hz. It supports Auto Low Latency Mode, so you don't have to worry about manually switching to Game Mode to get the lowest input lag.

This TV can't fully take advantage of the Xbox Series consoles, as it only supports 120Hz gaming with a 1080p signal. When gaming at 4k you're limited to 60Hz. It supports Dolby Vision gaming and Auto Low Latency Mode, so you don't have to worry about manually switching to Game Mode to get the lowest input lag.

Thanks to its relatively slow response time, there's just a bit of stutter in slow panning shots.

This TV doesn't have a motion interpolation feature to reduce stutter.

Unfortunately, the TV can't remove judder from sources that send a 60Hz signal. This causes an uneven frame cadence if you're using an older cable TV box or a streaming stick that doesn't match the content frame rate.

There's no micro judder.

This TV has a poor response time when watching content. Most transitions are slow, resulting in very blurry motion. Shadow details are a bit better, with no distracting overshoot.

Transitions are uneven on the Vizio Mini LED Quantum 4K, and there are very noticeable unwanted colors between transitions, and edges are soft.

The TV uses pulse-width modulation (PWM) to adjust the intensity of the backlight. It flickers at an extremely high frequency, though, and most people won't notice it.

There's an optional backlight strobing feature, commonly known as black frame insertion. It only flickers at 60Hz, and it's not available outside of Game Mode. Unfortunately, the pulse timing is slightly off, resulting in a noticeable double image.

The Vizio Mini LED Quantum 4K has bad direct reflection handling. The glossy coating does almost nothing to reduce the intensity of bright, mirror-like reflections.

Ambient light has barely any impact on black levels.

The total amount of reflected light is decent. Bright lights and open windows are very clearly visible in the screen, but they're not diffused across it at all.

This TV has decent color saturation in a bright room. Ambient light has no noticeable impact on colors.

The Vizio Mini LED Quantum 4K has  a great viewing angle. It's a great choice for a wide seating arrangement, as the image remains consistent even when you move far to the sides.

The gray uniformity on this TV is mediocre. There's just a bit of dirty screen effect in the center, so it's okay for watching sports, but the sides of the screen are noticeably darker. It's a lot better in dark scenes.

The TV uses an RGB subpixel layout, which helps deliver clear text when used with a PC.

The TV uses a KSF phosphor coating to produce red light, with high peaks on reds and blues. This model does have good separation between colors, giving it solid color purity and a wide color gamut.

The three HDMI inputs are limited to HDMI 2.0 bandwidth.

The TV has eARC support, which allows it to pass uncompressed high-quality audio from a connected source to your home theater system or soundbar. It supports all common audio formats.

The Vizio Mini LED Quantum 4K has an okay design, with a simple style that's about what you'd expect from a budget model. The bezels are thin on three sides, with a slightly thicker bottom bezel that still doesn't stick out too much. There's a slight gap between the side covers and the first pixels.

The two feet at opposite ends support the TV well, but can't be placed in alternative positions to adapt it to your cabinet.

Footprint of the 65-inch stand: 49.9" x 12.6" x 3.3"

The inputs are housed in an electronics box near the center of the screen. All of the inputs face to the side and are easy to access when the TV is wall-mounted. There's a groove in each foot to help with cable management.

The TV has mediocre build quality. There are a few noticeable quality control issues with the unit we bought, including some noticeable debris stuck behind the panel, and the plastic housing on the back is uneven. It's almost entirely made of cheap-feeling plastic.

The Vizio Mini LED Quantum 4K runs Vizio's proprietary VIZIO OS, which is a rebranding of the SmartCast system Vizio used previously. This system has a decent selection of apps, with most common streaming services available, but there's no dedicated app store and the overall selection is significantly smaller than competing smart platforms.

The interface is fairly quick, but buggy, and during testing we encountered multiple bugs. The TV reboots randomly, and the settings menu would occasionally fail to display all of the available sub options. We'd have to leave the menu and come back for them to appear.

The TV requires you to sign in to a Walmart account to complete the setup process. There's an option to skip this step, but all smart features are disabled until you sign in.

Like all TVs, there are ads throughout the interface.

• Remote control
• Power cable
• User guides

This TV was originally tested with firmware 86.900.61.1-6.

The frequency response on this TV is mediocre. Like most TVs there's barely any deep bass, with no thump or rumble. Above that it has a well balanced sound profile with a good downward slope and low and moderate listening levels. There's significant compression at max volume, though, and it doesn't get very loud.