When comparing Sony X800D vs TCL S405 55" (55S405), the Slant community recommends TCL S405 55" (55S405) for most people. In the question“What are the best 4K TVs to use as a computer monitor?” TCL S405 55" (55S405) is ranked 1st while Sony X800D is ranked 5th. The most important reason people chose TCL S405 55" (55S405) is:
The S405 strikes a nice balance between picture quality, screen size, and input lag, all for an affordable price of below $500. It's a great choice for watching and gaming casually without breaking the bank. Compared to its direct competitors, it offers decent picture quality that is a tad below them, bigger screen size, and lower input lag. Content looks decent enough for most casual viewers - the black levels are sufficiently deep, colors are vivid, and it gets bright enough for most types of content in a dark room. The size difference is pretty huge as options with similar size of 49", or even smaller, cost fairly more than the S405. Its low input lag of ~15ms contributes to a more responsive gaming experience. It's barely noticeable, and it’s also one of the lowest among 4K TVs, which is an impressive feat in this price bracket.
Ranked in these QuestionsQuestion Ranking
Pro Great color reproduction
Despite the low price, this TV offers near-premium display specs and HDR functionality which separates this TV from its competitors. Sony’s Triluminos technology allows a much wider color gamut and more natural looking colors previously only found on high-end models. Pictures will look more dynamic and natural compared to other TVs in this price range, especially when using an HDR signal.
Pro Smooth motion for movies and games
The X800D’s strong motion control handling make it great for movies and games. At 15ms the pixel response time is better than its price range competitors which results in virtually no blurring or trailing with fast moving objects on the screen. Additionally, it supports black frame insertion, even in game mode, which further smoothes the picture and reduces eye tracking motion blur.
Pro Small details will look sharp and clear
The TV is a great monitor for tasks like text editing, web browsing, 3D modelling or other situations where detailed color information is needed for each pixel. It supports 4:4:4 chroma in PC mode or uncompressed color data for each individual pixel. It eliminates jagginess on text and loss of detail on small objects caused by pixels with inaccurate color data.
Pro Thin TV with thin bezels
The bezels are only 1 cm thin and TV itself is only 4.5 cm thin, so it will look good either on a wall or on a table.
Pro Attractive, compact stand
The stand is metallic and does not require much space on a table.
Pro Good frequency response
Low frequency cut off is at 90Hz and there are no major drops on the high frequencies, ranking this TV above average
Pro Picture enhancement
This TV has a special processor that enhances picture quality. The signal is broken down and sent to the display in several components (texture, outline, contrast, and color). Each one is separately analyzed and processed, to ensure the clearest, sharpest, most attractive final image.
Pro 49" model has good viewing angles
For the 49-inch model the viewing angle is very generous and can suit almost all situations.
Pro Handles reflections adequately if the room isn’t too bright
The screen has a semi-glossy finish which helps reduce reflections.
Pro 43" model has excellent contrast ratio
It has an excellent contrast ratio of 3900:1, providing a dynamic looking picture.
Pro Speakers suitable for daily use
This TV's speakers are okay for regular use at normal volumes, reaching 92dB which is enough for a mid-sized room. But for larger rooms it is recommended to buy a separate sound system.
Pro Good support for various input formats and resolutions
The X800D’s support for different resolutions and refresh rates, when hooked up as a PC monitor, is excellent.
Pro Input lag sufficient for casual gamers
Casual gamers will be satisfied as X800D delivers barely noticeable input lag of 33ms at 1080p and 35ms at 4K.
Pro Excellent value for money
The S405 strikes a nice balance between picture quality, screen size, and input lag, all for an affordable price of below $500. It's a great choice for watching and gaming casually without breaking the bank.
Compared to its direct competitors, it offers decent picture quality that is a tad below them, bigger screen size, and lower input lag.
Content looks decent enough for most casual viewers - the black levels are sufficiently deep, colors are vivid, and it gets bright enough for most types of content in a dark room.
The size difference is pretty huge as options with similar size of 49", or even smaller, cost fairly more than the S405.
Its low input lag of ~15ms contributes to a more responsive gaming experience. It's barely noticeable, and it’s also one of the lowest among 4K TVs, which is an impressive feat in this price bracket.
Pro Decent for casual movies/TV watching
The S405 is a decent, affordable pick if you're a casual viewer. You'll get decent picture quality and a good 4K experience, but the HDR performance might be lacklustre due to the lack of local dimming, wide color gamut, and low HDR peak brightness.
Pro Works well as a computer monitor
The S405 works well as a computer monitor thanks to its low input lag, barely noticeable motion blur, and full 4:4:4 color support. The 43" model can even be used up close due to its small minimal viewing distance.
The low input lag and low motion blur of ~15ms makes it highly responsive to input and gives it the ability to handle dynamic content well.
It also has full 4:4:4 color support, so text or shapes with hard edges on the screen won't be blurry.
Pro Decent for watching sports
The S405 is a good pick for watching sports thanks to its low motion blur and reasonably consistent color uniformity.
Fast-moving objects, like footballs, won't leave any visible trails on the screen due to the low motion blur of ~15ms. While there are slight uniformity inconsistencies in the edges of the panel when displaying large, same-color objects on screen, like football fields, the issues generally go unnoticed by most.
Pro Intuitive & smooth user interface
The S405 runs on the Roku TV smart platform, touted for its simple, straightforward, and lag-free UI.
It’s easy for anyone to grasp how navigation works, thanks to its two-column design with the menu on the left and options on the right.
There’s also no noticeable lag during navigation or menu selection.
Pro Excellent for gaming
The S405 is excellent for gaming - the overall experience will be very responsive and fluid, thanks to the really low input lag and barely noticeable motion blur.
It has an input lag of ~15ms that makes the TV highly responsive to user input - gamers will have no issues keeping their actions in sync with what's on the display. The panel can fully change its pixels color in under 15ms, resulting in fast-moving objects not leaving any trails on the screen, eliminating virtually all motion blur.
It's also suitable for HDR gaming because there is no increased input lag for HDR, and it has full 4K suport @ 60 FPS, which makes it suitable for all new 4K games.
Pro Colors are easy to calibrate
Color calibration can be performed easily via the Roku mobile app. You won't have to fiddle with the remote trying to set the values correctly.
Pro Main interface has no ads
The S405 has no ads on its main interface, although there can be ads in third-party applications. Third-party ads can't be blocked, but the tracking and personalisation can be limited through the TV's settings.
Pro Highly versatile
The S405 is versatile enough to be used as a general-purpose display.
The picture quality is decent for movies and TV shows, and it checks all the boxes that makes a TV suitable for gaming, sports, and as a computer monitor: low input lag, low motion blur, good screen uniformity, and full 4:4:4 color support.
Pro Well-balanced side inputs
Even when the S405 is mounted on a wall, you'll still have access to all essential inputs and outputs which are situated on the side of the unit.
Pro Colors are accurate even without calibration
The S405 is excellent at reproducing colors accurately out of the box.
Even without calibration, the colors are spot-on - they're very close to what the source signal demands, and any inaccuracies are generally considered imperceptible to most end users.
The overall average difference between the source signal and the panel's reproduction of the color is measured in Delta-E, where lower means better accuracy. The S405 has a Delta-E of below 2.0, and anything below 3.0 is generally considered accurate for most end users.
Pro Decent picture quality
The S405 looks decent with adequately deep black levels, above-average color accuracy, and sufficient peak brightness levels for most content.
It’s especially great at reproducing dark scenes thanks to the panel’s contrast ratio of about 4000:1, which means blacks can get really dark at about 4000 times darker than the brightest white it can produce.
Colors are spot-on even without calibration, and the panel can get bright enough with a peak brightness level of ~200 nits to make them pop in dark environments.
The best viewing experience will be in a dark environment where the panel won’t have to compete with light. The S405’s screen can’t really get bright enough to perform as well in bright environments.
Con 49" model has mediocre contrast ratio
Contrast is about 1500:1 for the 49-inch model.
Con Separate power brick
There is a separate power brick on the 49” version.
Con Depending on the setting, inputs can be hard to access
Note that if the TV is mounted on a wall, some inputs are difficult to access.
Con 43" model has rather poor viewing angles
Colors start to shift at 20 degrees and a noticeable brightness loss begins at 40 degrees.
Con Somewhat lacking brightness
The maximum brightness of the set is 375 nits, which provides acceptable performance in sunlit rooms. HDR content, where brightness is needed, will look decent but lacks the peak brightness of higher-end models.
Con Distortion at higher volumes
Harmonic distortion is not a problem in low and mid high volumes, but the sound becomes heavily distorted at maximum volume.
Con Lacking black levels
Although the TV can reproduce colors brilliantly, provides a great picture in a dark environment and the shadows can be distinguished clearly in complex dark scenes. The black levels won’t compete with higher end models since it lacks local dimming, or the ability to dim the LEDs only on parts of the screen displaying black.
Con No support for signals above 60 Hz
The TV supports signals up to 4K resolution and 60Hz with HDR support, meaning that most formats are supported except for 1080p at 120Hz.
Con Input lag might be too much for pro gamers
If you are a serious first person shooter or racing game player, where every millisecond counts, the input lag may not suit you.
Con HDR support is basic
The S405 can't reproduce HDR pictures very well because it lacks various important features.
HDR won't look much different from SDR due to the lack of wide color gamut and low peak brightness. It can't reproduce the full range of colors necessary for HDR, and the brightness level of only ~200 nits is barely enough for HDR content to stand out.
The black levels are also insufficient for highlights to stand out, and it won't be as dynamic as one would expect for HDR due to the lack of local dimming.
Con Can't fight glare very well
The S405 can deal with low amounts of light, such as sunlight through curtains, but it won't be able to deal with significantly bright light.
Apart from being unable to get bright enough, its handling of reflections is only average. The panel has a semi-gloss finish which helps in reducing reflections a little, but its peak brightness level of ~200 nits is not enough for fighting glare.
Con Remote lacks functionality
The S405 has a basic remote that is only capable of navigation, playback control, and volume control. It doesn't have fancy stuff like voice command found in remotes of other TVs.
Con Poor sound quality
The speakers on the S405 are too bassy, so distortion becomes a huge problem at high volumes. A relatively cheap speaker system or a soundbar will make a huge difference in sound quality.
Con Lacks support for Dolby Vision
The S405 only supports the HDR10 format for HDR content.
Con Not suitable for group watching
The S405 has a narrow viewing angle that makes it unsuitable for watching with groups.
People sitting away from the center of the screen will not experience the same picture as those sitting in the center because the picture quality starts to deteriorate significantly when viewing from just ≥30° away from the screen's center.