Comparison between TCL 55R646 vs TCL 55S425

General Info
Model Number	TCL 55R646	TCL 55S425

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Type	TV	TV
Year	2021	2018
Brand	TCL	TCL
Model Series	R646	S425
Model Number	55R646	55S425
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 Type		VA
Display Bit Depth	10 bits	10 bits (8 bits + FRC)
Frame Rate Control		Yes
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	92.67 %	91.66 %
Backlight Source	Mini LED	Direct LED
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Coating	Anti-glare/Matte
HDR	HDR10 HLG (Hybrid Log Gamma) Dolby Vision HDR HDR10+	HDR10
3D	No	No
Size, weight, color
Case Depth	3.6 in 9.1 cm 91.44 mm 0.3 ft	3.1 in 7.9 cm 78.74 mm 0.26 ft
Case Weight	19.2 kg 42 lbs	12.1 kg 27 lbs
Case Width with Stand	48.3 in 122.7 cm 1226.82 mm 4.03 ft	49 in 124.5 cm 1244.6 mm 4.08 ft
Case Height with Stand	30.9 in 78.5 cm 784.86 mm 2.58 ft	30.6 in 77.7 cm 777.2 mm 2.55 ft
Case Depth with Stand	12.4 in 31.5 cm 315 mm 1.03 ft	7.99 in 20.3 cm 203 mm 0.67 ft
Case Weight with Stand	19.6 kg 43 lbs	12.3 kg 27 lbs
Case Color	Black	Black
Hardware
CPU Cores	4	2
GPU Cores	2	2
TV Tuner	Analog (NTSC/PAL/SECAM) ATSC Clear QAM	Analog (NTSC/PAL/SECAM) Clear QAM ATSC
Built-in Camera	No	No
Network	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 802.11ac (IEEE 802.11ac) 802.11ax (IEEE 802.11ax, Wi-Fi 6) Wi-Fi Direct	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 802.11ac (IEEE 802.11ac)
Connectivity	2 x HDMI 2.0 2 x HDMI 2.1 1 x AV Composite In 3.5 mm jack 1 x 3.5 mm Audio Out 1 x S/PDIF 1 x Cable/Antenna In (F-type female) 2 x USB 2.0 1 x Ethernet RJ45	3 x HDMI 2.0 (ARC; CEC) 1 x Satellite In (Main; F-type female) 1 x S/PDIF 1 x 3.5 mm Audio Out 1 x AV Composite In (Video + L/R) 1 x USB 2.0 (max 0.5 A) 1 x Ethernet RJ45
Audio
Audio Speakers	2 x 15W	2 x 8W
Features
OS	Google TV	Roku TV
Cool Features	V-Chip Apple TV+ Smart Contrast Smart 4K Upscaling YouTube Smart HDR Auto Game Mode HDR Pro Pack Chromecast built-in Easy Voice Control Quantum Dot Color Netflix THX Certified Game Mode Disney+ Contrast Control Zones technology Alexa Prime Video FullView Edge-to-Edge Glass Design Apple AirPlay Google Assistant	4K Creative Pro HDCP (High-bandwidth Digital Content Protection) 2.2
Ergonomics
Case Width	48.3 in 122.7 cm 1226.82 mm 4.03 ft	49 in 124.5 cm 1244.6 mm 4.08 ft
Case Height	28.5 in 72.4 cm 723.9 mm 2.38 ft	28.4 in 72.1 cm 721.4 mm 2.37 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	300 x 300	200 x 200
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	48 Hz - 120 Hz	60 Hz
Screen Interpolation Technology	Natural Motion	Clear Motion Index
Screen Interpolation Value	480	120
Screen Interpolation Measurement Unit	NM	CMI
Accessories
Extras	Voice-Enabled Remote Control - RC902N	Remote control - RC280
Certificates and Standards
Licenses		RoHS
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 % - 80 %	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 55R646

TCL 55S425