91points

LG 55LM640

43points

RCA LED42B45RQ

Comparison winner
LG 55LM640
RCA LED42B45RQ
vs
vs

41 facts in comparison

LG 55LM640 vs RCA LED42B45RQ

LG 55LM640
RCA LED42B45RQ

Why is LG 55LM640 better than RCA LED42B45RQ?

  • Supports Wi-Fi
    ?
  • 30.95% bigger screen size
    ?

    55"vs42"
  • Supports USB recording
    ?
  • Supports Dolby Digital
    ?
  • 2 more USB ports
    ?

    3vs1
  • Supports Wi-Fi 4 (802.11n)
    ?
  • 4W more audio output power
    ?

    2 x 10Wvs2 x 0W
  • Is DLNA-certified
    ?

Why is RCA LED42B45RQ better than LG 55LM640?

  • 30% higher pixel density
    ?

    52ppivs40ppi
  • 244mm narrower
    ?

    988mmvs1232mm
  • 7kg lighter
    ?

    14.3kgvs21300g
  • 14.1kg less shipping weight
    ?

    16.5kgvs30.6kg
  • Has auto volume
    ?
  • 103mm shorter
    ?

    620mmvs723mm

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Design

1.width

1.23m

988mm

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

21.3kg

14.3kg

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.shipping weight

30.6kg

16.5kg

The gross weight of the product when packaged, including all wrapping, and boxing.
4.height

723mm

620mm

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

Display

1.pixel density

40ppi

52ppi

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.resolution

1920 x 1080px

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.has an LED-backlit display
LG 55LM640
RCA LED42B45RQ
Uses LED backlighting, resulting in better image quality, more vibrant colors and richer blacks.
The bigger the screen size is, the better the user experience.
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.
6.has an ambient light sensor
LG 55LM640
RCA LED42B45RQ
An ambient light sensor adjusts the luminance of the device according to the amount of natural light that surrounds it.
7.displays 3D with glasses
LG 55LM640
RCA LED42B45RQ
It supports displaying 3D images from devices such as a 3D-compatible Blu-ray player, allowing you to watch films in 3D when using suitable glasses.
8.displays 3D
LG 55LM640
RCA LED42B45RQ
The device can display 3D images without the need for wearing special glasses. The display's special construction allows viewers to get a sense of an image's depth by tailoring its position to fit the user's perspective.

Connectivity

1.supports Wi-Fi
LG 55LM640
RCA LED42B45RQ
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.
Newer versions of HDMI support higher bandwidth, which allows for higher resolutions and frame rates.
5.supports Wi-Fi 4 (802.11n)
LG 55LM640
RCA LED42B45RQ
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.
6.has a VGA connector
LG 55LM640
RCA LED42B45RQ
VGA connector is a widespread connector and is found on many video cards, computer monitors, and some television sets.
7.is DLNA-certified
LG 55LM640
RCA LED42B45RQ
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.
8.supports common interface
LG 55LM640
RCA LED42B45RQ
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).
The more composite ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.

Audio

1.supports Dolby Digital
LG 55LM640
RCA LED42B45RQ
If the device supports Dolby Digital it can deliver up to six different audio channels (sides) for a much better sound 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.
3.has stereo speakers
LG 55LM640
RCA LED42B45RQ
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
4.supports Dolby Digital MS10
LG 55LM640
RCA LED42B45RQ
If a device supports Dolby Digital MS10 it can decode Dolby Digital and Dolby Digital Plus.
5.has SRS TheaterSound HD
LG 55LM640
RCA LED42B45RQ
SRS devices create an immersive 3D soundfield using only two speakers, simulating the kind of audio experience delivered by devices that support Dolby Digital.
6.has a subwoofer
LG 55LM640
RCA LED42B45RQ
Devices with a subwoofer have a higher quality, deeper bass.
7.has auto volume
LG 55LM640
RCA LED42B45RQ
This technology adjusts the volume of the device according with what the video player needs.
8.supports Digital Out
LG 55LM640
RCA LED42B45RQ
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.
9.has a multi-room audio system
LG 55LM640
RCA LED42B45RQ
This allows users to have an audio/video setup as the master, and play music in other rooms that are included in the Master Link Setup.

Features

1.supports USB recording
LG 55LM640
RCA LED42B45RQ
USB recording is the capacity of the device to record content into plugged in USB devices.
2.has a sleep timer
LG 55LM640
RCA LED42B45RQ
A sleep timer is a function that shuts off the power after a preset amount of time.
3.has time shift
LG 55LM640
RCA LED42B45RQ
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.
4.has a search browser
LG 55LM640
RCA LED42B45RQ
With a search browser app, you can surf the internet from your device.
5.has a child lock
LG 55LM640
RCA LED42B45RQ
A child lock enables adults to prevent or restrict children’s use of the device.
6.supports two-player full-screen gaming
LG 55LM640
RCA LED42B45RQ
With this function, both players can see their own game in full-screen simultaneously by wearing special glasses.

Miscellaneous

1.has a 24p cinema mode
LG 55LM640
RCA LED42B45RQ
24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.

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