VIZIO P-Series 65" (P65-E1) vs TCL S517 55" (55S517)

The P65-E1 performs extremely well for HDR content thanks to its black levels, high native contrast ratio (4675:1, up to twice of that at 9271:1 with local dimming), and wide color gamut — all three of which are essential to HDR.

The P65-E1 runs on Vizio’s SmartCast OS, which has a remote app for iOS & Android capable of controlling the TV.

There are two different formats for HDR — HDR10 and Dolby Vision. Some TVs support only HDR10 and can't play Dolby Vision content. The P65-E1 supports both HDR10 and Dolby Vision, giving it the ability to play any HDR content in 2017.

Unlike the OLED panels in this price range, the P65-E1 has a VA panel and thus it does not suffer from image retention issues.

The user interface of modern smart TVs can include some advertisements similar to those on the internet or in a mobile app. The P65-E1 does not include any.

The P65-E1 can handle dark scenes very well thanks to its high native contrast levels, which clocks in at 4675:1 native, and it can go up to double of that at 9271:1 with local dimming enabled. This, along with good black levels and uniformity, gives the TV the ability to achieve great representations of dark scenes beyond most expectations.

The P65-E1 is versatile enough to be used for sports & gaming — its handling of motion blur is fantastic at ~11ms, and the input lag is only ~16ms which makes it good for gaming where input lag matters (but it is not suitable for HDR gaming because of the ~45ms of input lag for HDR content).

The P65-E1 is great at handling motion with very fast response time (~11ms). It will have no issues with displaying fast-moving objects — they will look smooth without any blur or lag.

The P65-E1 does a decent job with color accuracy — the colors are accurate out of the box and there is no calibration required, although it would benefit from some adjustments to the white balance. Color calibration is recommended to get the most out of this TV, but not necessary if you find it alright.

The black levels of a TV affects the viewer’s perception of other colors next to it. If the black levels are not deep enough and doesn’t remain uniform across the screen, the overall picture quality will look “flat” without much depth. The P65-E1 handles this well with only <0.8% deviation (across the entire screen) from what a pure black screen should be — this results in a significant gain in its native contrast levels, thereby increasing the picture quality.

The color gamut of a TV refers to the range of colors the display can reproduce — the wider the color gamut, the more colors it can display, and the better the overall picture quality will be. This is extremely important for HDR content because it requires a much wider color gamut than SDR content. This TV has a wide color gamut and have no issues with accurately reproducing the colors necessary for true HDR, although its color gamut is not as wide as other TVs in this price range (e.g. the Sony X900E).

The picture quality is great on the P65-E1. It has one of the highest contrast ratios in an LED TV when local dimming is enabled (9271:1), giving it the ability to produce very deep and uniform blacks. The brightness level for HDR is decent enough at ~450 nits to fight glare in bright environments without much picture quality degradation.

Local dimming is the TV's ability to dim areas of the screen for deeper black levels and better contrast — they are separated into different dimming zones, where each zone can be individually dimmed as needed. The local dimming on the P65-E1 is by far one of the best in LED TVs of 2017 (only beaten by the Sony X940E). It is capable of doubling the contrast levels from 4675:1 to 9271:1.

The P65-E1’s panel has a semi-gloss finish for diffusing the light across the screen evenly to decrease intensity. This, along with its ability to get quite bright (practically, it peaks at ~450 nits for HDR and can maintain this level of brightness), means that this TV is decent at handling reflections and performs okay in bright environments.

In terms of picture quality the S517 is comparable to high-end TVs. It displays remarkably deep blacks due to its great contrast and reproduces details in color very well due to its good color gradient.

The 6000:1 native contrast ratio allows the TV to reproduce dark scenes particularly well. It is easily one of the best in this price range – it’s often compared to high-end counterparts.

The S517 has superb black uniformity and contrast that create pleasant, deep blacks. They are much better than those of the similarly-priced competitors. The maximum deviation sits at around 1.02% .

The TV is good at capturing small differences in color such as skin tones, green colors in nature, details in shadows, etc. This is because of the color gradient, which is on par with other options of the same price. There is almost no banding and the standard deviation of color doesn't go past 0,11%.

The S517 is fit for all gamers because it offers a clear, lag-free experience. The TV is very responsive - it has struck a good balance between decent refresh rate, solid input lag, and good response time.

The TV is an ideal choice for console gaming in terms of its native refresh rate. It caps at 60Hz, which is perfect since most games won't benefit from anything higher than this.

The S517 is fast. An action shows on the screen in around 18 miliseconds, which can make the difference between managing to get a frag or waiting for a respawn. The time doesn't substantially increase when gaming in HDR or 4K either - it goes up to roughly 20.5 ms. The only thing to remember is to keep "_Game_" mode enabled for the lowest possible input lag.

The TCL S517 also handles motion and fast-paced content quite well, it has a good response time. This makes sure you can keep up with fast-moving objects and a lot of action without it all appearing blurry. A full pixel color transition takes only 15.8 ms.

The mobile remote app for both iOS or Android can fully and comfortably substitute the real remote – launch apps, input text in apps, control most TV settings, etc.

Also, colors can easily be adjusted close to perfection thanks to the app’s calibration menu.

The S517 comes with the Roku TV smart platform, which provides a comfortable interface and a big app selection.

The interface is quite basic and easy to overlook. It’s smooth and simple to swap to your favorite apps.

Roku TV offers a huge app store with all the most popular apps – Netflix, YouTube, Hulu Plus, Amazon Instant, HBO Go, Vudu and much more. Some apps are even absent from other TV manufacturers Smart TV platforms and unique to Roku.

The picture quality when you first open the TV up is quite decent. The only settings that could potentially require tweaking are grey inaccuracy and color inaccuracy. Either way, these are things that most people won't even notice.

The S517 offers a pleasant PC monitor experience not only due to the good responsiveness, but also because of the video signal's compression.

The TV won't make text appear blurry while connected to a PC because the signal has no compression and transports color data and luminance fully. This is also known as chroma 4:4:4, and the “_Computer_” and “_Game_” modes display it properly at 60Hz.

All of the inputs are conveniently placed on the side of the S517, so you won't have to worry about leaving space between a wall and the TV.

The S517 offers the possibility to make movement in videos smoother, also known as the "soap opera effect". This is done by making the TV take two frames and try to guess what would a frame in between of those look like, also known as motion interpolation. The frame rate can interpolate up to 60 frames per second.

The S517 does a reasonably good job with upscaling most content to 4K quality, be it 480p DVDs, HDTV or full HD Blu-rays.

The TCL S517 is a decent option for pretty much everything, be it gaming, movies, sports, or HDR content. It has noteworthy picture quality, good all-around responsiveness, decent smart features, nice motion handling, and, most importantly, a great price.

The S517 is a much better fit for HDR content and HDR gaming than its competitors due to the wide color gamut, decent color depth, and high contrast.

The TV can display a lot more colors than its similarly-priced counterparts. The coverage of the Digital Cinema P3 color space is very good - 90%.

The color depth is on par with competing options. The S517 has 10-bit color depth, which means that it can display approximately 1.07 billion colors in total. This is important for HDR content because HDR media takes advantage of 10-bit.

The S517 can display deep blacks in the HDR mode because of it's high native contrast ratio of 6000:1, which is easily one of the best in the given price range.

The TV can also play all HDR content, because it supports both standard formats of HDR - HDR10 and Dolby Vision. They enhance the viewing experience by editing the metadata, that is, the extra information that tells the TV how to display HDR. The formats differ in the way they deal with it however - Dolby Vision edits the picture on a per scene basis, whereas HDR10 edits everything at the start of the video.