Panasonic Viera TX-40CXW804

Panasonic Viera TX-40CXW804

Panasonic Viera TX-40CXW804 review: specs and price

Panasonic Viera TX-40CXW804

Why is Panasonic Viera TX-40CXW804 better than the average?

  • Pixel density

  • Resolution

    3840 x 2160pxvs6.62MP
  • Width

  • Operating power consumption

    74W vs160.47W
  • USB ports

  • Weight

  • Thickness

  • Shipping weight


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The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.


We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
3.has a wall bracket
Panasonic Viera TX-40CXW804
This bracket allows the user to change the viewing angle manually by up to 90 degrees.
We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
5.has an easel stand
Panasonic Viera TX-40CXW804
This stand allows the user to place the TV in a slightly tilted back position.
6.has a motorised wall bracket
Panasonic Viera TX-40CXW804
This stand allows the user to change the viewing angle by up to 90 degrees with a remote control.
7.bezel size

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The bezel size on a device is the extra space that surrounds the actual screen. The smaller it is the more aesthetically pleasing it appears.
8.height adjustment range

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Devices with height adjustment provide a full range of height possibilities resulting in maximum comfort.
9.thickness with wall bracket

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The thinner the device, the better (measurements including wall bracket).


Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
2.has an LED-backlit display
Panasonic Viera TX-40CXW804
Uses LED backlighting, resulting in better image quality, more vibrant colors and richer blacks.

3840 x 2160px

Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
The bigger the screen size is, the better the user experience.
5.Has an OLED or AMOLED display
Panasonic Viera TX-40CXW804
OLED (Organic Light-Emitting Diode) displays are formed of organic materials that emit light. They have higher contrast ratios and wider viewing angles compared to LCDs. AMOLED and POLED are types of OLED displays.
6.has an HDR10-enabled display
Panasonic Viera TX-40CXW804
The display supports HDR10, which is an HDR (high dynamic range) video technology. Compared to standard dynamic range (SDR) video, HDR10 video has greater contrast and color depth, resulting in more realistic images.
7.has a display in 24p
Panasonic Viera TX-40CXW804
A display that supports 24p can display content at the same speed of a screen cinema, for a more cinematic experience.
8.has an IPS screen
Panasonic Viera TX-40CXW804
IPS (In-Plane Switching) is a technology used for LCDs. It was designed to overcome the main limitations of conventional twisted nematic TFT displays: limited viewing angles and low-quality color reproduction. PLS (Plane-to-Line Switching) is a type of IPS screen developed by Samsung, with increased brightness and lower production costs.
The frequency at which the screen is refreshed. Higher frequency results in less flickering (less noise) and more natural movement representation in action-intense scenes.


1.supports Wi-Fi
Panasonic Viera TX-40CXW804
The device can connect to Wi-Fi.
More HDMI ports mean that you can simultaneously connect numerous devices, such as video game consoles and set-top boxes.
With more USB ports, you are able to connect more devices.
4.supports Wi-Fi 4 (802.11n)
Panasonic Viera TX-40CXW804
Wi-Fi 4 (802.11n) is a wireless standard released in 2009. It has faster transfer rates and improved security compared to its predecessors – a, b, and g.
5.is DLNA-certified
Panasonic Viera TX-40CXW804
All DLNA-certified products are compatible with one another. When different devices are connected to the same network, data can be transferred easily between them.
6.supports Miracast
Panasonic Viera TX-40CXW804
Devices that support Miracast can communicate via wi-fi in an open format.
7.has a VGA connector
Panasonic Viera TX-40CXW804
VGA connector is a widespread connector and is found on many video cards, computer monitors, and some television sets.
8.supports Wi-Fi 5 (802.11ac)
Panasonic Viera TX-40CXW804
802.11ac wireless works on the 5GHz frequency range. It offers higher transfer rates, improved reliability, and improved power consumption. It provides advantages for gaming and HD video streaming.
9.has AirPlay
Panasonic Viera TX-40CXW804
AirPlay allows wireless connection of Apple devices with external screens or speakers. You may stream computer screen, video and music from iOS devices, play games like on consoles or present your slideshows easily on your TV.


1.supports Dolby Digital
Panasonic Viera TX-40CXW804
If the device supports Dolby Digital it can deliver up to six different audio channels (sides) for a much better sound quality.
2.has DTS Surround
Panasonic Viera TX-40CXW804
DTS Surround is a high-quality audio codec that supports up to six audio channels, with good bitrates and audio quality.
Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.
4.supports Digital Out
Panasonic Viera TX-40CXW804
Devices that support Digital Out can deliver sound through optic fiber audio cables (like TOSLINK) or coaxial audio cables, which can transmit high-resolution audio at fast speeds.
5.supports Dolby Digital MS10
Panasonic Viera TX-40CXW804
If a device supports Dolby Digital MS10 it can decode Dolby Digital and Dolby Digital Plus.
6.supports Dolby Digital Plus
Panasonic Viera TX-40CXW804
If a device supports Dolby Digital Plus it can deliver up to fourteen different audio channels (sides) with improved bitrates, for a much better sound quality.
7.has SRS TheaterSound HD
Panasonic Viera TX-40CXW804
SRS devices create an immersive 3D soundfield using only two speakers, simulating the kind of audio experience delivered by devices that support Dolby Digital.
8.has stereo speakers
Panasonic Viera TX-40CXW804
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
9.has auto volume
Panasonic Viera TX-40CXW804
This technology adjusts the volume of the device according with what the video player needs.


1.supports a remote smartphone
Panasonic Viera TX-40CXW804
This technology allows the users to use their smartphone as a remote control for the device.
2.supports USB recording
Panasonic Viera TX-40CXW804
USB recording is the capacity of the device to record content into plugged in USB devices.
How much power the device consumes when it's switched on.
The power consumption in standby mode, also called energy-saving mode, measures the amount of power the device consumes when shut down but still plugged in.
5.has a sleep timer
Panasonic Viera TX-40CXW804
A sleep timer is a function that shuts off the power after a preset amount of time.
6.has time shift
Panasonic Viera TX-40CXW804
This function allows the user to record and program a file to a storage medium (dvd player or usb) to be viewed or listened at a more convenient time.
7.has a search browser
Panasonic Viera TX-40CXW804
With a search browser app, you can surf the internet from your device.
8.has a child lock
Panasonic Viera TX-40CXW804
A child lock enables adults to prevent or restrict children’s use of the device.
The more power per year a device consumes, the less energy efficient it is, making it more costly over time.

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