When comparing Vizio D40u-D1 vs TCL S405, the Slant community recommends TCL S405 for most people. In the question“What are the best 4K TVs to use as a computer monitor?” TCL S405 is ranked 2nd while Vizio D40u-D1 is ranked 12th. The most important reason people chose TCL S405 is:
This 4K TV has everything a good computer monitor needs. It has small input lag, barely noticeable motion blur, decent color accuracy, and full 4:4:4 color support. As for responsiveness, the TCL S405 is the fastest TV in its price range. It has the lowest input lag (14.9 ms) among all of its main competitors. Furthermore, the full response time of the TCL S405 is 14.4 ms which means that the TV’s pixels can entirely change their colors in 14.4 ms - ten times faster than an average blink. Because of that, fast-moving objects don’t leave trails so the TV does not suffer from any noticeable motion blur.
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Pro Very dark blacks
A pure black screen measures just 0.023 cd/m², which means that when black colours or loading screens appear, they will actually look black (instead of the dark purplish glow which lower quality screens produce when displaying black colours).
Pro Great colors
The colors on this TV deliver great accuracy and very little banding, easily outperforming any other TV in its price range.
Pro Size options
The TV comes in various sizes, starting from 40” up to 65”, making it easy to choose the best size for you.
Pro Decent response time for gaming
This TV has a response time of 12.3ms, which is pretty good but not optimal for gaming. 16ms is considered the total response time (from mouse to monitor) before humans can detect the delay, so as long as you use a very fast mouse you shouldn't notice any delay whatsoever.
Pro 5 HDMI ports
With 5 HDMI ports, which offer extremely low latency in Game mode, you can have everything plugged into this TV.
Pro Works well as a computer monitor
This 4K TV has everything a good computer monitor needs. It has small input lag, barely noticeable motion blur, decent color accuracy, and full 4:4:4 color support.
As for responsiveness, the TCL S405 is the fastest TV in its price range. It has the lowest input lag (14.9 ms) among all of its main competitors.
Furthermore, the full response time of the TCL S405 is 14.4 ms which means that the TV’s pixels can entirely change their colors in 14.4 ms - ten times faster than an average blink. Because of that, fast-moving objects don’t leave trails so the TV does not suffer from any noticeable motion blur.
Pro Reasonable picture quality
When placed in a dark environment, the S405's VA panel has a reasonably high native contrast ratio of 4171:1, acceptable grey uniformity, excellent black uniformity, and good color accuracy.
Pro Excellent value for money
Priced below $300 (43-inch model), this 4K TV has enough functionality to compete against more expensive competitors. You’d be hard pressed to find a similar TV in this price range with a better picture quality and broader feature set.
Pro Ads-free interface
The main interface of this TV does not have advertisements. It even has a function to limit ads even in third-party applications.
Pro Displays colors accurately
Out of the box, the TLC S405 does an excellent job of color reproduction. In fact, you probably won’t even need to calibrate it.
Pro Can be used up-front
Because of its reasonably small panel size and small minimum viewing distance of 2.2 ft, you can place the 43-inch model of the TCL S405 on top of your work desk and use it as a computer monitor.
Pro Intuitive user interface
The S405 runs the Roku TV smart OS platform. It has broad app support and is noticeably simpler to navigate than Android TV, WebOS, and Tizen.
Pro Good for sports
Due to the TV’s fast response time, the S405 is also an excellent solution for those who like to watch highly dynamic content, such as sports. The 4/5 response time (the parameter which describes how good a TV handles motion blur) of this TV is 6.3 ms. That is a much better response time than some higher-end competitors can offer. In fact, its closest competitors have worse motion blur handling capabilities than the S405.
Pro Good for gaming
Its well-handled motion blur, full HDR support and low SDR and HDR input lag make it a great choice for gaming. Its also works well with new-gen consoles like the Xbox One X and PS4 Pro because of the TV’s native 4K60 refresh rate.
Con Mediocre viewing angles
This TV has been testing to have a viewing angle of about 15°. While great for a TV, this is sub-par for a computer monitor. Because you'll be sitting closer to it, the angle from center to the edge of the screen will likely be past the 15° mark, which could leave colours washed out by the edges of the panel.
Con Not the best choice for text or photo editing
The TV does not support chroma 4:4:4 sub-sampling. Therefore, small fonts and small details on photos lose color data and detail.
Con No Chromecast
Unlike Vizio's more recent TV ranges, which use Chromecast, this TV still uses a standard smart TV system, providing only basic functionality and apps.
Con Low brightness
The TV is not the best option if you plan to use it in bright conditions as the brightness level is one of the lowest in the market, reaching only 260 nits. If it was not for the excellent contrast ratio, the picture would look bland.
Con 120Hz only runs in 1080p
Because of the lack of a Display Port, 120Hz can only be achieved at 1080p. 120Hz is preferable when it comes to gaming, so for the best performance you will need to game at 1080p. 4K only supports 60Hz, which isn't ideal for gaming but will work fine for productivity purposes.
Con No display port
Display port is a port used to deliver high amounts of data, and more favourable than HDMI for very high resolution high fps gaming.
Con Narrow viewing angles
Due to its limited viewing angles, the TCL S405 looks good only when you sit right in front of it. This viewing angle limitation is very common among VA panels, making such TVs not suitable for group watching.
Con Not all HDR formats are supported
This TV is compatible with HDR10, but not with Dolby Vision content. While HDR10 has more content, Dolby is aggressively pushing Dolby Vision towards content makers.
Con Not suitable for bright rooms
This TV is not bright enough to fight glare when placed in a luminous environment.
Con Remote lacks functionality
The TCL S405's remote is very basic and has limited functionality. It can only be used for navigation and sound level control, which is not that much since many modern TV remotes have advanced functions.
Con Poor sound quality
The stereo speaker system sounds horrible and cannot get louder than 91 dB. Adding a relatively cheap speaker system or a soundbar will make a huge difference.