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Comparison LG 55SJ810V 55 " vs LG 55UJ750V 55 "

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LG 55SJ810V 55 "
LG 55UJ750V 55 "
LG 55SJ810V 55 "LG 55UJ750V 55 "
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TOP sellers
Size55 "55 "
Operating systemSmart TV (proprietary system)Smart TV (proprietary system)
Display
Matrix
IPS /Nano Cell Display/
IPS
Screen surfacemattematte
Resolution
3840x2160 px /Ultra HD/
3840x2160 px /Ultra HD/
Upscalingup to 4K
Frame rate100 Hz60 Hz
HDR supportHDR10HDR10
Multimedia
Sound power20 W20 W
Number of speakers22
Audio decodersUltra SurroundUltra Surround
Digital tuner
DVB-T2 (terrestrial)
DVB-C (cable)
DVB-S2 (satellite)
DVB-T2 (terrestrial)
DVB-C (cable)
DVB-S2 (satellite)
Features
Features
Wi-Fi
Miracast
Bluetooth
voice control
Wi-Fi
Miracast
Bluetooth
voice control
Connectors
HDMI44
Additional inputs
USB
LAN
component
composite AV input
USB
LAN
component
composite AV input
Outputs
mini-Jack (3.5 mm) headphones
optical
mini-Jack (3.5 mm) headphones
optical
General
Wall mountVESA 300x300 mmVESA 300x300 mm
Dimensions (WxHxD)
1236x774x248 mm /with stand/
1236x774x248 mm /with stand/
Dimensions without stand (WxHxD)1236x718x62 mm1236x718x62 mm
Weight
16.7 kg /with stand/
16.7 kg /with stand/
Color
Added to E-Catalogmay 2017may 2017

Upscaling

TV support for Upscaling function. This feature is only available on models with 4K and 8K resolution screens.

Upscaling to 4K allows you to increase the resolution of the original “picture” to 4K (3840x2160), if it was initially lower - for example, viewing a movie in 4K that was originally recorded in Full HD (1920x1080). In this case, we are not just talking about “stretching” the image to fill the entire screen (all TVs are capable of doing this), but about special processing, thanks to which the actual video resolution is increased. Of course, such video will still be inferior to content originally recorded in 4K; however, upscaling provides a noticeable improvement in quality compared to the raw signal.

Upscaling to 8K works on the same principle, only relevant for 8K TVs.

Frame rate

The highest frame rate supported by the TV.

Note that in this case we are talking specifically about the screen’s own frame rate, without additional image processing (see “Index of dynamic scenes”). This frequency must be no lower than the frame rate in the video being played - otherwise there may be jerks, interference and other unpleasant phenomena that degrade the quality of the picture. In addition, the higher the frame rate, the smoother and smoother the movement in the frame will look, and the better the detail of moving objects will be. However, it is worth noting here that playback speed is often limited by the properties of the content, and not by the characteristics of the screen. For example, films are often recorded at a frequency of only 30 fps, or even 24 - 25 fps, while most modern TVs support frequencies of 50 or 60 Hz. This is enough even for viewing high-quality content in HD resolutions (speeds above 60 fps in such video are extremely rare), but there are also “faster” screens on the market: 100 Hz, 120 Hz and 144 Hz. Such speeds, as a rule, indicate a fairly high class of the screen; they also often imply the use of various technologies designed to improve the quality of dynamic scenes.
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