Comparison between TCL 55EC780 vs TCL 55X4US

General Info
Model Number	TCL 55EC780	TCL 55X4US

Price	Check on Amazon	Check on Amazon
Type	TV	TV
Year	2019	2018
Brand	TCL	TCL
Model Series	EC78	X4
Model Number	55EC780	55X4US
Alias	55EC780X1
Display
Screen Size Class	55" (inches)	55" (inches)
Diagonal Size	54.65 in 138.8 cm 1388 mm 4.55 ft	54.65 in 138.8 cm 1388 mm 4.55 ft
Screen Width	47.62 in 121 cm 1209.6 mm 3.97 ft	47.62 in 121 cm 1209.6 mm 3.97 ft
Screen Height	26.79 in 68 cm 680.4 mm 2.23 ft	26.79 in 68 cm 680.4 mm 2.23 ft
Display Manufacturer		Samsung
Display Type	VA	VA
Display Bit Depth	10 bits	10 bits
Frame Rate Control	No	No
Max Number of Colors	1073741824	1073741824
Bits	30	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.315 mm	0.315 mm
Screen Pixel Density	80 ppi	80 ppi
Screen-to-Body Ratio	90.77 %	88.2 %
Backlight Source	Edge LED	Direct LED (Full-Array Local Dimming)
Screen Brightness	400 cd/m²
Static Screen Contrast		4000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Minimum Response Time		6 ms
Display Coating		Glossy
HDR	HDR10+ HDR Pro Dolby Vision	HDR10 HDR Premium 800
3D	No	No
Size, weight, color
Case Depth	3.07 in 7.8 cm 78 mm 0.26 ft	1.74 in 4.4 cm 44.1 mm 0.14 ft
Case Weight	12.2 kg 27 lbs	16 kg 35 lbs
Case Width with Stand	48.9 in 124.2 cm 1242 mm 4.07 ft	48.46 in 123.1 cm 1231 mm 4.04 ft
Case Height with Stand	30.75 in 78.1 cm 781 mm 2.56 ft	31.3 in 79.5 cm 795 mm 2.61 ft
Case Depth with Stand	8.66 in 22 cm 220 mm 0.72 ft	8.01 in 20.3 cm 203.4 mm 0.67 ft
Case Weight with Stand	12.4 kg 27 lbs	16.5 kg 36 lbs
Case Color	Black	Black, Silver
Hardware
CPU Cores		4
GPU		ARM Mali-T860 MP2
GPU Cores		2
RAM Memory Size		2.5
Internal Storage		16
TV Tuner	Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2
Built-in Camera	No	No
Network	Wi-Fi 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz Wi-Fi Direct DLNA 1.5	LAN Wi-Fi 802.11a (IEEE 802.11a-1999) 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz Bluetooth Wi-Fi Direct
Connectivity	2 x HDMI 2.0 (b; HDCP 2.2) 1 x HDMI 2.0 (b; HDCP 2.2; MHL; ARC) 1 x RCA Video In 1 x 3.5 mm Audio Out 1 x Optical Audio Out 1 x Satellite In 2 x USB 2.0 1 x Antenna (RF) 1 x Ethernet RJ45 1 x CI+ 1.4	1 x Ethernet RJ45 2 x HDMI 2.0 1 x AV Composite In 3.5 mm jack 1 x 3.5 mm Audio Out 1 x S/PDIF 1 x HDMI 2.0 (ARC) 1 x USB 2.0 1 x Antenna (RF) 1 x USB 3.0 (5V/0.9A)
Audio
Audio Speakers	4 x 13W	2 x 10W
Features
OS	Android 9.0 Pie	Android 7.0 Nougat
Cool Features	HDCP (High-bandwidth Digital Content Protection) 2.2 Picture noise reduction Wide Color Gamut Game mode / Film Mode / Sports mode Google Assistant	Quantum Dot Color HDCP (High-bandwidth Digital Content Protection) 2.2 Wide Colour Gamut
Extra Features	Remote control - RC602S6+RC802N6
Ergonomics
Case Width	48.9 in 124.2 cm 1242 mm 4.07 ft	48.46 in 123.1 cm 1231 mm 4.04 ft
Case Height	28.74 in 73 cm 730 mm 2.4 ft	29.84 in 75.8 cm 758 mm 2.49 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	200 x 200	500x200
Removable VESA Stand	Yes	Yes
Height Adjustment	No	No
Landscape or Portrait Pivot Support	No	No
Left or Right Swivel Support	No	No
Forward and Backward Tilt Support	No	No
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	60 Hz
Screen Interpolation Technology	Picture Performance Index
Screen Interpolation Value	2000
Screen Interpolation Measurement Unit	PPI
Accessories
Extras		Basic Remote (RC802N) + Smart Remote (RC602S)
Certificates and Standards
Usage and Storage Requirements
Safe Operating Temperature Level	5 °C - 35 °C 41 °F - 95 °F	5 °C - 35 °C 41 °F - 95 °F
Safe Operating Humidity Level	20 % - 25 %	20 % - 80 %
Internal Storage Temperature	-15 °C - 45 °C 5 °F - 113 °F	-15 °C - 45 °C 5 °F - 113 °F
Internal Storage Humidity	10 % - 90 %	10 % - 90 %

TCL 55EC780

TCL 55X4US