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Samsung 40-inch MU640x Series

alaTest has collected and analyzed 809 reviews of Samsung 40-inch MU640x Series. The average rating for this product is 4.7/5, compared to an average rating of 4.3/5 for other TVs for all reviews. People are impressed by the design and price. The sound and usability are also appreciated, but the connectivity and reliability get mixed comments.

image quality, usability, sound, price, design

We analyzed user and expert ratings, product age and more factors. Compared to other TVs the Samsung 40-inch MU640x Series is awarded an overall alaScore™ of 97/100 = Excellent quality.

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Review analysis

(Based on 809 reviews)

Expert Reviews  

User Reviews  

Showing 766 review(s)

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Showing 1 - 10 of 766 Show Reviews: in English | in other languages (51)

Expert review by (

Samsung UE40MU6400 review


Can a £500 40in TV deliver a worthwhile 4K experience?

Crisp, detailed picture ; Natural colour balance ; Strong contrast ; Excellent value

HDR performance isn't as convincing as pricier models

A 'small' TV with a big mentality, the UE40MU6400 delivers an outstanding 4K performance for under £500

Oct, 2017

Expert review by : What Hi-Fi? (

Samsung UE40MU6400U review


Who needs supersized screens - the Samsung UE40MU6400U produces a great picture at an affordable price...

All the specs and apps you could hope for ; Deep, insightful blacks ; Impressive detail and definition ; Natural, nuanced colours ; Great value

You can get more impressive HDR if you spend more money

Looking for a 4K TV in a sensible size and at an extremely reasonable price? You’ve found it

Sep, 2017

Expert review by (

Samsung UE40MU6400 review

  (Rating Hidden)

This small but mighty 40-inch Samsung TV comes with the latest 4K HDR screen technology. So if you're looking for a reasonably priced TV that doesn't compromise on features, the UE40MU6400 will have caught your eye. See if it has the performance to...

Jun, 2017

Consumer review (

Amazing TV and value


It's not just a TV. It's an easy to use online system.

Mar, 2018

Consumer review (



Would highly recommend this TV to anyone thinking of buying a 40" set. The picture quality in full HD is absolutely brilliant. We bought it from John Lewis in Leeds, who matched a competitors price. This together with their 5 year guarantee makes for...

Mar, 2018

Consumer review (

Very Happy Customer


Really happy with the size and quality of the TV. The actors on screen now look so clear/vivid that they could be standing in my living room. I paid to have the TV set up, and the engineers were fantastic. Would highly recommend

Mar, 2018

Consumer review (

An excellent buy


We wanted a Smart HDR UHD TV with 40 inch screen suitable for our small living room. This product was perfect. Good price, excellent quality and a stunning picture. Turns out the on screen set up and adjustments are easy but hallelujah, unusually these...

Mar, 2018

Consumer review (

One to look for.


Really good television with excellent picture. Sound is limited in quality and can be improved with the use of a sound bar. John Lewis also gives a 5 year guarantee included.

Mar, 2018

Consumer review (

needed new tv


My previous TV was Samsung and as I was really pleased with the years of service I opted for another Samsung. I have not been disappointed, after the initial set up and changing the picture and sound settings I am really pleased with my choice. Being a...

Mar, 2018

Consumer review (

Very good TV at remarkably low price


The TV is physically attractive with thin frame and stand. The picture is excellent and sound good. The only gripe I have is the amount of 'bloatware' - I think that is the term. When you turn it on you have to navigate out of enforced film clips /...

Mar, 2018

Product Specifications


Audio decoders:DTS
Audio decoding technologies:Dolby Digital Plus
Audio system:2.0
Auto volume leveler:Y
Built-in speaker(s):Y
Built-in subwoofer:N
Multiroom audio technology:Samsung Multiroom Link
Number of loudspeakers:2
Number of Speakers:2
RMS rated power:20


Digital Living Network Alliance (DLNA) certified:Y


Color of product:Black, Silver / Silver
LED Indicators:Power / Y
Year of production:2017


Aspect Ratio:16:9 / 4:3, 16:9
Display Diagonal:40
Display Diagonal (metric):39.4
Display Resolution:3840 x 2160
Display Technology:LED
Dynamic contrast ratio marketing name:Mega Contrast
HD type:4K Ultra HD
Motion interpolation technology:PQI (Picture Quality Index)
PQI (Picture Quality Index):1500
Screen format adjustments:16:9
Screen shape:Flat
Supported graphics resolutions:3840 x 2160
Supported video modes:720i,720p,1080i,1080p,2880p


On/Off switch:Y
Smartphone remote support:Y
VESA mounting:Y
VESA mounting interfaces:200 x 200

Management Features

Auto power off:Y
ECO mode:Y
Electronic Program Guide (EPG):Y
Number of OSD languages:27
On Screen Display (OSD):Y
On/Off timer:Y
Picture-in-Picture:N / Y
Sleep Timer:Y
Smart modes:Movie


Bluetooth profiles:HID
Ethernet LAN:Y
Web browser:Y
Wi-Fi Direct:Y

Other Features

Dimming type:Supreme UHD / UHD Dimming

Packaging Content

Batteries included:Y
Cables included:AC, Samsung Slim Gender
Desktop stand:Y
Handheld remote control:Y
Mounting kit:Y
Remote Control Type:TM1750A

Packaging Data

Package depth:24.3 / 7.32
Package height:24.3 / 7.32
Package type:Box
Package weight:32.8
Package width:41.5


4K upscaler:Y
Auto Depth Enhancer:N
ConnectShare (HDD):Y
ConnectShare (USB):Y
Digital Clean View:Y
Extended PVR:Y
Game mode:Y
HDMI Quick Switch:Y
High Dynamic Range Imaging (HDRI):Y
Instant On:Y
Local dimming:N / Y
MBR support:Y
Nano Crystal Color:Y
Peak Illuminator Pro:N / Y
Picture processing technology:Samsung Auto Motion Plus,Samsung Contrast Enhancer,Samsung UHD Up-Scailing,Samsung Ultra Clean View / Samsung UHD Up-Scailing
Plug and Play:Y
Processor cores:4
PurColor:N / Y
Quantum dot color technology:N
Satellite Channel Router (SatCR) compatible:Y
Subtitle formats supported:TXT
Subtitles function:Y
Teletext function:Y
USB recording:Y
Voice control:Y

Ports & interfaces

Audio Return Channel (ARC):Y
Common interface (CI):Y
Common interface Plus (CI+):N / Y
Common interface Plus (CI+) version:1.3
Component video (YPbPr/YCbCr) in:1
Composite video in:1
Consumer Electronics Control (CEC):Anynet+
Digital audio optical out:1
DVI port:N
Ethernet LAN (RJ-45) ports:1
HDMI ports quantity:3
Headphone outputs:1
One Connect port:N / Y
PC in (D-Sub):N
RF ports quantity:1
RS-232C ports:1
USB 2.0 ports quantity:2


AC input frequency:50/60
AC input voltage:220 - 240
Annual Energy Consumption:85
Energy efficiency class:A
Energy saving mode:Y
Power consumption (max):120
Power consumption (standby):0.5
Power consumption (typical):61

Smart TV

Hybrid Broadcast Broadband TV (HbbTV):Y
Hybrid Broadcast Broadband TV (HbbTV) version:1.5
Internet TV:Y
Lifestyle apps:Samsung Smart View
Music apps:Deezer, Spotify
Screen mirroring:Y
Smart TV:Y
Video apps:Amazon Prime Video,NetFlix,YouTube

Technical Details

LED backlight:Y

TV Tuner

Auto channel search:Y
Digital signal format system:DVB-C,DVB-S2,DVB-T / DVB-C2,DVB-S2,DVB-T
Number of tuners:1
Tuner Type:Analog & digital / Digital
Twin tuner:N

Weight & Dimensions

Depth (with stand):12
Height (with stand):22.6
Package depth:7.32
Package height:24.3
Package weight:32.8
Package width:41.5
Weight with stand:23.1
Width (with stand):35.6