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
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.
- High contrast ratio.
- Gets very bright.
- Good reflection handling.
- Poor viewing angles.
- Some vignetting and dirty screen effect.
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.
- High contrast ratio.
- Can remove judder from 24p sources and native apps.
- Blooming around bright objects and subtitles.
- Some vignetting and dirty screen effect.
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.
- Gets very bright.
- Good reflection handling.
- Poor viewing angles.
- Some vignetting and dirty screen effect.
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.
- Gets very bright.
- Fast response time.
- Good reflection handling.
- Poor viewing angles.
- Some vignetting and dirty screen effect.
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.
- High contrast ratio.
- Low input lag.
- Fast response time.
- VRR doesn't work.
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.
- High contrast ratio.
- Gets very bright.
- Can remove judder from 24p sources and native apps.
- Excellent HDR color gamut.
- Blooming around bright objects and subtitles.
- Some vignetting and dirty screen effect.
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.
- High contrast ratio.
- Gets very bright.
- Low input lag.
- Fast response time.
- Excellent HDR color gamut.
- Blooming around bright objects and subtitles.
- VRR doesn't work.
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.
- Low input lag.
- Fast response time.
- Good reflection handling.
- Poor viewing angles.
Changelog
- Updated Sep 26, 2025: We uploaded the latest brightness measurements and uniformity photos for the Accelerated Longevity Test.
- Updated Jul 08, 2025: We uploaded the latest brightness measurements and uniformity photos for the Accelerated Longevity Test.
- Updated Apr 17, 2025: We uploaded the latest brightness measurements and uniformity photos for the Accelerated Longevity Test.
- Updated Feb 11, 2025: We uploaded the latest brightness measurements and uniformity photos for the Accelerated Longevity Test.
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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, like gray uniformity, may vary between individual units.
The manufacturing date of our unit isn't indicated; you can see the label here.
Popular TV Comparisons
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, like the Hisense H9G.
For more options, check out our recommendations for the best TVs, the best 4k TVs, and the best 4k gaming 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 Hisense H9G is much better than the Vizio P Series Quantum 2020. 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.
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.
For most uses, the Vizio P Series Quantum 2020 is better than the Samsung Q70T. 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.
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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