LG 47LM640

LG 47LM640

LG 47LM640 review: specs and price

LG 47LM640
LG 47LM640

Why is LG 47LM640 better than the average?

  • Width

  • Power consumption in standby mode

    0.3W vs0.37W
  • USB ports

  • Weight

  • Operating power consumption

    64W vs158.55W
  • HDMI ports

  • Thickness

  • Annual power consumption


Price comparison




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.


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.


Quicksilver describes how much quicksilver (kind of poison metal) is in the device, the less the better.


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


1.pixel density


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.

1920 x 1080px

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.
3.screen size


The bigger the screen size is, the better the user experience.
4.has an LED-backlit display
LG 47LM640
Uses LED backlighting, resulting in better image quality, more vibrant colors and richer blacks.
5.has an ambient light sensor
LG 47LM640
An ambient light sensor adjusts the luminance of the device according to the amount of natural light that surrounds it.
6.displays 3D with glasses
LG 47LM640
The screen can be used to view 3D images with special glasses. The advantage of these screens is that they provide wider viewing angles compared to devices that don't require 3D-compatible gear.


1.supports Wi-Fi
LG 47LM640
The device can connect to Wi-Fi.
2.USB ports


With more USB ports, you are able to connect more devices.
3.supports Wi-Fi 4 (802.11n)
LG 47LM640
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.
4.HDMI ports


More HDMI ports mean that you can simultaneously connect numerous devices, such as video game consoles and set-top boxes.
5.HDMI version


A newer HDMI version offers a higher bandwidth and is capable of carrying a better signal, e.g. more audio channels, more frames per second etc.
6.has a VGA connector
LG 47LM640
VGA connector is a widespread connector and is found on many video cards, computer monitors, and some television sets.


1.supports Dolby Digital
LG 47LM640
If the device supports Dolby Digital it can deliver up to six different audio channels (sides) for a much better sound quality.
2.has SRS TheaterSound HD
LG 47LM640
SRS devices create an immersive 3D soundfield using only two speakers, simulating the kind of audio experience delivered by devices that support Dolby Digital.
3.has stereo speakers
LG 47LM640
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
4.has a subwoofer
LG 47LM640
Devices with a subwoofer have a higher quality, deeper bass.
5.audio output power

2 x 10W

Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.
6.supports Dolby Digital MS10
LG 47LM640
If a device supports Dolby Digital MS10 it can decode Dolby Digital and Dolby Digital Plus.


1.supports USB recording
LG 47LM640
USB recording is the capacity of the device to record content into plugged in USB devices.
2.operating power consumption


How much power the device consumes when it's switched on.
3.has a sleep timer
LG 47LM640
A sleep timer is a function that shuts off the power after a preset amount of time.
4.supports common interface
LG 47LM640
This is a technology which allows separation of the TV screen and the decoder. It is used for pay-to-view TV (like Apple TV).
5.has time shift
LG 47LM640
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.
6.has a child lock
LG 47LM640
A child lock enables adults to prevent or restrict children’s use of the device.


1.power consumption in standby mode


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.
2.audio input ports


More audio input ports mean that more audio devices such as microphones and keyboards can be connected at once.
3.has a 24p cinema mode
LG 47LM640
24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.

Price comparison

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