The Vizio P Series Quantum X 2020 is a great 4k TV that delivers stunning picture quality. It has a VA panel with a high contrast ratio, which is further enhanced by a full-array local dimming feature, allowing it to produce deep blacks. Its high peak brightness fights glare easily and delivers an exceptional HDR experience with bright highlights. It has a fast response time and a Black Frame Insertion feature, resulting in clear images in fast-moving scenes. Its low input lag should please most gamers, and it supports variable refresh rate (VRR) to reduce screen tearing. Unfortunately, it has pretty narrow viewing angles, so it might not be the best option for wide seating arrangements. Also, even though its SmartCast interface is user-friendly, it doesn't have as many apps as other platforms since Vizio doesn't have an app store.
Note: Our unit has a reddish tint that's present when displaying an image from any of its HDMI ports, which is why some of the photos in the review look a bit red. It isn't due to calibration, as it persists even after performing a calibration reset. We attempted a different calibration to address this issue and it removed the red tint; however, it caused yellow-green lines to appear when displaying shades of white or blue. As such, we're keeping the original calibration.
Our Verdict
The Vizio P Series Quantum X 2020 is great for most uses. It gets very bright and handles reflections well, making it a good choice for watching TV shows or sports during the day. It performs incredibly well in dark rooms, as it can produce deep and inky blacks for watching movies or playing video games. It has low input lag, a fast response time, and a high refresh rate to deliver an extremely responsive gaming and desktop experience. Unfortunately, its VA panel has narrow viewing angles, so it isn't the best option for wide seating areas.
- High contrast ratio.
- Can get very bright in SDR and HDR.
- Excellent reflection handling.
- Poor viewing angles.
The Vizio P Series Quantum X 2020 is excellent for watching movies. It has an outstanding contrast ratio that's further enhanced by its full-array local dimming, producing inky blacks for a fantastic dark room viewing experience. It upscales 1080p content well and can remove judder from 24p sources and native apps. Unfortunately, there's visible blooming around bright objects, which can be distracting in dark scenes.
- High contrast ratio.
- Great local dimming feature.
- Exceptional black uniformity.
- Upscales 1080p content well.
- Poor viewing angles.
The Vizio P Series Quantum X is great for watching TV shows. It gets incredibly bright and has excellent reflection handling, providing great visibility in well-lit rooms. Sadly, its narrow viewing angles make images look washed out from the sides, which isn't ideal if you like walking around while watching. On the upside, its VA panel is immune to permanent burn-in, so you don't have to worry about leaving it on the same news channel all day.
- Can get very bright in SDR and HDR.
- Excellent reflection handling.
- Upscales 1080p content well.
- Poor viewing angles.
The Vizio P Series Quantum X is good for watching sports. It has excellent reflection handling and gets very bright, providing great visibility even in the brightest lighting conditions. Fast-moving scenes look clear thanks to its quick response time and Black Frame Insertion feature. It isn't the best option for watching with a large group of people, though, as its VA panel's poor viewing angles make images look washed out from the sides.
- Can get very bright in SDR and HDR.
- Fast response time.
- Excellent reflection handling.
- Poor viewing angles.
The Vizio P Series Quantum X 2020 is excellent for gaming. It provides an incredibly smooth and responsive experience thanks to its low input lag and high refresh rate. It has a quick response time to deliver fast-moving scenes with minimal motion blur and a Black Frame Insertion feature to further improve clarity. Additionally, it supports variable refresh rate to reduce screen tearing. It has an outstanding contrast ratio and exceptional black uniformity, making it a fantastic choice for gaming in the dark.
- High contrast ratio.
- Fast response time.
- Low input lag.
- Poor viewing angles.
The Vizio P Series Quantum X 2020 is excellent for watching movies in HDR. It has a high contrast ratio to produce deep blacks, an excellent HDR color gamut, and it gets more than bright enough to make highlights pop. It has a great local dimming feature, but the blooming can be a bit distracting, especially if you tend to watch with subtitles.
- High contrast ratio.
- Can get very bright in SDR and HDR.
- Great local dimming feature.
- Exceptional black uniformity.
- Poor viewing angles.
The Vizio P Series Quantum X 2020 is excellent for gaming in HDR. Gaming feels smooth and responsive, and there's support for variable refresh rate technology to help minimize screen tearing. HDR content looks amazing, as it has an excellent color gamut and high peak brightness, allowing it to produce rich colors and bright highlights. Its high contrast ratio, full-array local dimming, and exceptional black uniformity make it a fantastic option for dark room gaming.
- High contrast ratio.
- Can get very bright in SDR and HDR.
- Fast response time.
- Low input lag.
- Poor viewing angles.
The Vizio P Series Quantum X is a good TV for use as a PC monitor. It has low input lag, fast response time, and can display proper chroma 4:4:4. It gets very bright and handles reflections well. Unfortunately, its VA panel has poor viewing angles, so the edges of the screen may look washed out if you sit too close.
- Can get very bright in SDR and HDR.
- Fast response time.
- Low input lag.
- Excellent reflection handling.
- Poor viewing angles.
Changelog
- Updated Dec 21, 2021: We updated our voice control results for consistency.
- Updated Jul 26, 2021: We added two videos showing the local dimming performance with real content. We also retested 4k @ 120Hz support from the PS5 and a PC, and found that it's still skipping frames if Game Low Latency is enabled.
- Updated Mar 01, 2021: Converted to Test Bench 1.6.
- Updated Nov 11, 2020: Updated review for accuracy and clarity.
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Differences Between Sizes And Variants
We tested the 75" Vizio P Series Quantum X 2021 (P75QX-H1), and for the most part, we expect our results to be valid for the 65" (P65QX-H1) and the 85" (P85QX-H1) models as well. Note that the 85" model isn't available yet and is expected for release this fall. The three sizes have different numbers of local dimming zones, and as such, we expect the local dimming to perform differently on the 65" and the 85" models.
| Size | Model | Dimming Zones |
|---|---|---|
| 65" | P65QX-H1 | 384 |
| 75" | P75QX-H1 | 480 |
| 85" | P85QX-H1 | 792 |
If someone comes across a different type of panel or their Vizio P Series Quantum X 2021 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.
You can see our unit's label here.
Popular TV Comparisons
The Vizio P Series Quantum X 2021 is an overall great TV that's suitable for most uses. Its biggest weakness is its VA panel's poor viewing angles, making it less ideal for large rooms with wide seating areas. For a similar TV with better viewing angles, check out the Sony X950H. You can also see our recommendations for the best TVs, the best 4k TVs, and the best budget TVs.
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.
Overall, the Vizio P Series Quantum X 2020 is a bit better than the Sony X900H. The Vizio has a higher contrast ratio, gets brighter in SDR and HDR, and has significantly better reflection handling. However, the Sony has better color accuracy out-of-the-box, a faster response time, and its Android TV platform runs smoother and has more apps available.
The Vizio P Series Quantum X 2020 and the Sony X950H are very similar overall. The Vizio has a higher contrast ratio, a better HDR color gamut, and much lower input lag. The Sony has wider viewing angles due to its 'X-Wide Angle' layer, faster response time, and its internal speakers sound much better.
Overall, the Samsung Q80T is a bit better than the Vizio P Series Quantum X 2020 for most uses. The Samsung has better reflection handling and wider viewing angles, so it's better for wider seating arrangements. It also has a faster response time and a lower input lag, so it's a better choice if you play video games. However, the Vizio has a higher contrast ratio, a much better HDR color gamut, and it gets a lot brighter in both SDR and HDR.
We buy and test dozens of TVs yearly, taking an objective, data-driven approach to deliver results you can trust. Our testing process is complex, with hundreds of individual tests that take over a week to complete. Most of our tests use specially designed test patterns that mimic real content, but we also use the same sources you have at home to ensure our results match the real-world experience. We use two main tools for our testing: a Colorimetry Research CR-100 colorimeter and a CR-250 spectroradiometer.
Test Results
Older Test Bench: This product has been tested using an older TV test methodology, before a major update. Some of the test results below aren't directly comparable with other TVs. Learn more
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