The Vizio P Series Quantum 2021 is a great TV that replaces the Vizio P Series Quantum 2020. It improves in a few areas compared to its predecessor, but there are some disappointments for a high-end 4k TV. It's still plagued with bugs and issues, like having issues with proper chroma 4:4:4 with 120Hz signals. It supports FreeSync variable refresh rate (VRR) technology to reduce screen tearing and has HDMI 2.1 bandwidth. In terms of picture quality, it has a VA panel with a fantastic native contrast ratio, so it displays deep blacks, and the decent full-array local dimming feature improves it. Even in well-lit rooms, it has amazing reflection handling and high peak brightness. Fans of 4k HDR movies should also enjoy it, but it's not so good for watching old movies on DVDs as it has trouble upscaling some lower-resolution content.
Our Verdict
The Vizio P Series is great for most uses. It performs really well for watching movies in dark rooms thanks to its high contrast and decent local dimming feature. Even in well-lit rooms, it gets bright enough to combat glare and has amazing reflection handling. It's impressive for watching HDR content as it displays a wide color gamut and gets bright. It has a few gaming features like variable refresh rate support, but its response time is only decent, and it has issues displaying clear text with some signals.
- Displays deep blacks due to high contrast.
- Removes 24p judder from native apps and Blu-rays.
- Decent full-array local dimming helps improve the contrast.
- High peak brightness in SDR and HDR.
- 120Hz panel and VRR support.
- Has trouble upscaling 480p and 720p content properly.
- Only decent response time; black smearing is visible.
The Vizio PQ9 is great for watching TV shows in a bright room. It gets bright enough to combat glare and has amazing reflection handling, so visibility shouldn't be an issue. You can cast anything you want from your phone if you want to stream your favorite shows. However, it's not as good as other 4k TVs at upscaling 720p content, and it has narrow viewing angles, so the image looks washed out at the sides.
- Removes 24p judder from native apps and Blu-rays.
- High peak brightness in SDR and HDR.
- Amazing reflection handling.
- Can cast anything you want from your phone.
- Has trouble upscaling 480p and 720p content properly.
- Narrow viewing angles.
The Vizio P Series TV is good for watching sports in well-lit environments. Its reflection handling is amazing, and it has excellent peak brightness, so glare shouldn't be an issue in most bright rooms. Sadly, you may notice motion blur with fast-moving players or balls because the response time is only decent. It also has narrow viewing angles, so it's not an ideal choice for watching the game in a large viewing area.
- Removes 24p judder from native apps and Blu-rays.
- High peak brightness in SDR and HDR.
- Amazing reflection handling.
- Can cast anything you want from your phone.
- Has trouble upscaling 480p and 720p content properly.
- Narrow viewing angles.
- Only decent response time; black smearing is visible.
The Vizio P65Q9 is excellent for gaming. It has a 120Hz panel with FreeSync support to reduce screen tearing. It also has HDMI 2.1 bandwidth, but you need to update it to the latest firmware for it to work properly. Input lag is really low, and even though it has a decent response time, there's still visible motion blur with fast-moving content.
- Displays deep blacks due to high contrast.
- Removes 24p judder from native apps and Blu-rays.
- Decent full-array local dimming helps improve the contrast.
- 120Hz panel and VRR support.
- Low input lag.
- Only decent response time; black smearing is visible.
The Vizio PQ9 is impressive for HDR content. Its VA panel displays deep and uniform blacks and the local dimming feature does a decent job at improving the picture quality in dark scenes. It displays a really wide color gamut for HDR content and gets bright enough to make highlights pop the way the creator intended.
- Displays deep blacks due to high contrast.
- Removes 24p judder from native apps and Blu-rays.
- Decent full-array local dimming helps improve the contrast.
- High peak brightness in SDR and HDR.
- Displays really wide color gamut.
- Some blooming around bright objects in dark scenes.
The Vizio P Series Quantum TV is excellent for HDR gaming. It has excellent gaming performance thanks to its 120Hz panel, FreeSync support, and low input lag. It has full HDMI 2.1 bandwidth, but only after updating it to the latest firmware. In terms of HDR, it has a high native contrast, decent local dimming, a wide color gamut, and high peak brightness, so highlights pop and colors are vivid.
- Displays deep blacks due to high contrast.
- Removes 24p judder from native apps and Blu-rays.
- High peak brightness in SDR and HDR.
- 120Hz panel and VRR support.
- Low input lag.
- Displays really wide color gamut.
- Some blooming around bright objects in dark scenes.
- Only decent response time; black smearing is visible.
The Vizio P Series is great to use as a PC monitor. It has low input lag for a responsive desktop experience, but its response time is just decent. It has amazing reflection handling and excellent peak brightness if you want to use it in a bright room, but it has narrow viewing angles, so the edges look washed out if you sit too close. Also, it only displays chroma 4:4:4 with 1080p and 4k signals at 60Hz, as it can't do it with 120Hz signals.
- Removes 24p judder from native apps and Blu-rays.
- High peak brightness in SDR and HDR.
- Amazing reflection handling.
- 120Hz panel and VRR support.
- Low input lag.
- Narrow viewing angles.
- Only decent response time; black smearing is visible.
- Can't display chroma 4:4:4 with any 120Hz signal; limited to 60Hz.
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 inch Vizio P Series (P65Q9). It's also available in a 75 inch size (P75Q9-J01), but we've received confirmation that that size uses an IPS-style panel, so we expect it to perform differently from the model we bought. There's also an 85 inch P Series Quantum X 2021 model available, but our review isn't valid for that because it's advertised to get brighter and have more dimming zones.
| Size | Model | Dimming Zones |
|---|---|---|
| 65" | P65Q9-J01 | 144 |
| 75" | P75Q9-J01 | 210 |
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.
You can see the label of our unit here.
Popular TV Comparisons
The Vizio P Series is a great TV with excellent overall picture quality in both dark and bright rooms. It's a slight improvement from the Vizio P Series Quantum 2020, but it has many of the same issues. There are too many bugs when it comes to some 120Hz signals, and considering its price point, there are other gaming TVs that won't give you as many headaches.
Also see our recommendations for the best gaming TVs, the best TVs for HDR, and the best 4k TVs.
The Sony X90J and the Vizio P Series Quantum 2021 are both great 4k TVs. HDR content looks better on the Vizio because it displays a wider color gamut, gets brighter in HDR, and has better black uniformity. The local dimming performs better overall on the Sony than the Vizio, but the 65 inch Vizio still has a higher native contrast. The Vizio also has much better reflection handling if you want to use it in a well-lit room. The Sony doesn't have any issues with 4k content at 120fps like the way the Vizio does.
The Hisense U8G and the Vizio P Series Quantum 2021 are both great TVs, but the Hisense is more well-rounded. They each have a high contrast ratio on the 65 inch sizes, but the Hisense has better local dimming to display more uniform blacks. The Hisense has a much quicker response time, so motion looks better, and its gaming features don't have as many bugs as the Vizio as you can easily play 4k games up to 120fps. The Android TV interface is also better than Vizio's SmartCast system as it doesn't crash as much.
The Vizio P Series Quantum 2021 replaces the Vizio P Series Quantum 2020, and they're both great TVs. The 2021 improves in a few areas, like higher HDR peak brightness and better contrast and black uniformity, but this can vary between units. The 2021 model has trouble properly displaying 480p content, which we didn't see with the 2020 model. Motion looks a lot better on the 2020 model because it has a much quicker response time. They each have HDMI 2.1 inputs, and even though they both have trouble displaying 4k content at 120fps, the 2021 model doesn't have problems with the PS5 and Xbox Series X the way that the 2020 model did.
The Vizio P Series Quantum X 2020 and the Vizio P Series Quantum 2021 are both great 4k TVs. They have similar features and each use VA panels with a high contrast ratio, at least on the 65 inch sizes, but local dimming is better on the Quantum X because it displays deeper blacks and has better uniformity. The Quantum X also gets brighter in HDR, so highlights pop more. Motion looks smoother on the Quantum X due to the quicker response time. The Quantum comes with the new Vizio remote, which has voice control, and the Quantum X doesn't have that.
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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