The Vizio P Series Quantum is an excellent LED LCD TV, especially when viewed in a dark room. It has great picture quality in both SDR and HDR thanks to the wide color gamut, very high peak brightness, and great local dimming feature. Motion handling is also excellent, as very little blur is visible when watching fast paced content and the TV can perform black frame insertion when gaming to clear up fast motion. Input lag is also low, which is excellent. It isn't perfect though as banding is visible in gradients, the gray uniformity could be better and the image degrades rapidly when viewed at an angle.
Note that this is a different TV to the Vizio P Series 2018, and is the highest-end model from Vizio in 2018.
Our Verdict
Excellent TV overall. The screen is very bright and good at overcoming glare in a bright room, but still has the deep contrast ratio and black uniformity needed for dark room viewing. The viewing angles are a limiting factor, as the image quality degrades at an angle. Motion handling is great thanks to the fast response time and the TV feels responsive due to the excellent low input lag for gaming. The Vizio Quantum is great for any usage.
- Produces extremely bright HDR highlights
- Low input lag for gamers
- Excellent motion handling
- Image loses accuracy when viewed at an angle
Excellent TV for watching movies in a dark room. The native contrast is excellent at producing deep blacks, and with local dimming enabled it is even better. Low frame rate content does stutter a bit due to the fast response time, so there isn't much blur to smooth between frames.
Great TV for watching TV in a bright room. The Quantum is bright enough to overcome glare in a bright room and has excellent reflection handling. Unfortunately, the viewing angles are limited, so it isn't as good for watching TV while sat off to the side.
Good TV for watching sports in a bright room. It has excellent reflection handling and is able to get extremely bright to overcome glare. The response time is excellent, and fast motion looks great with no noticeable motion trail. The viewing angles are limited so it isn't as good for watching with a large group of friends.
Superb TV for playing video games. It has excellent low input lag, and a dedicated port for even lower input lag on lower bandwidth or SDR consoles. The response time is excellent, and fast motion looks great, with very little blur. It doesn't support automatically changing to game mode or variable refresh rate, unlike the high-end Samsung TVs.
Excellent TV for watching movies in HDR in a dark room. The excellent native contrast ratio and great local dimming produce nearly perfect blacks. The Vizio P-Series Quantum is extremely bright in HDR, and small highlights in some scenes will really pop. It also supports Dolby Vision, so you can get the best quality possible. Colors pop thanks to the wide color gamut and great color volume.
Remarkable TV for gaming with an HDR console like a PS4 or Xbox One X. The input lag is very low, good for competitive gaming. Motion is smooth and crisp thanks to the fast response times. The high contrast ratio is perfect for late night gaming. Unfortunately, it does not support newer gaming technologies like VRR or auto low latency, unlike the top tier Samsung TVs. It supports an excellent wide color gamut and can produce very bright highlights to make HDR content pop.
Excellent TV for use as a PC Monitor. It has excellent low input and supports most of the common resolutions, but unfortunately, it does not support 1440p. The viewing angles are bad, so when viewed from up close the sides appear non-uniform. There is no risk of burn-in or image retention which is great. Motion is crisp and smooth and it reacts quickly to a moving mouse pointer thanks to the fast response time.
Changelog
- Updated May 21, 2020: Converted to Test Bench 1.5.
- Updated Feb 21, 2020: Converted to Test Bench 1.4.
- Updated Aug 02, 2019: We have retested the gradient performance with the latest firmware, and found it to be roughly in the same ballpark. The score and measurements have been updated.
- Updated Jul 08, 2019: We retested the backlight flicker, and found that the flicker frequency has decreased to a much more noticeable 120Hz. The scores have been updated.
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Differences Between Sizes And Variants
We tested the 65" P-Series Quantum (PQ65-F1), which is the only size available in this line.
| Size | Model | LCD Type | Clear Action | Real Refresh Rate | Local Dimming Zones |
| 65" | PQ65-F1 | VA | 960 | 120 Hz | 192 |
Popular TV Comparisons
The Vizio Quantum is an excellent mixed-usage TV that outperforms many pricier models. See our recommendations for the best TVs.
The Vizio P Series Quantum 2018 is better than the Vizio P Series 2018. The Quantum has better bright room performance, as it's much brighter and has a better reflective coating that reduces glare. The Quantum also has more saturated colors, with a wider color gamut and better color volume. Motion performance and input lag are nearly identical between the two models, as are smart features.
The LG C8 OLED is a bit better than the Vizio P Series Quantum 2018, unless your main usage is in a bright room. The C8 has even better dark room performance than the already excellent Vizio Quantum, with true perfect blacks. The C8 also has much wider viewing angles, great for a wide seating area. The Vizio P Series Quantum is much better for a bright room, as it's significantly brighter with SDR and HDR content. The Quantum also doesn't have a risk of burn-in with static content.
The Vizio P Series Quantum 2018 has similar overall performance to the Samsung Q900/Q900R 8k QLED. The Vizio P Series has better reflection handling for a room with multiple light sources, and also better dark room performance, which is great for watching movies. The Samsung Q900R, on the other hand, has an 8k resolution and wider viewing angles thanks to the 'Ultra Viewing Angle' layer. The Q900R supports FreeSync and is a better choice for use as a PC monitor.
The Vizio P Series Quantum 2018 is somewhat better than the Sony X950G. The Vizio has better local dimming and a higher contrast ratio, which, along with the wider color gamut, is great for movies and HDR content, especially in a dark room. Also, the Vizio has a faster response time and slightly crisper fast-moving content. On the other hand, the Sony X950G has better smart features, which is great if you use them often.
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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