Comparison between TCL 75R646 vs TCL 75Q825

General Info
Model Number	TCL 75R646	TCL 75Q825

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Type	TV	TV
Year	2021	2019
Brand	TCL	TCL
Model Series	R646	Q825
Model Number	75R646	75Q825
Display
Screen Size Class	75" (inches)	75" (inches)
Diagonal Size	74.53 in 189.3 cm 1893 mm 6.21 ft	74.53 in 189.3 cm 1893 mm 6.21 ft
Screen Width	64.97 in 165 cm 1650.24 mm 5.41 ft	64.97 in 165 cm 1650.24 mm 5.41 ft
Screen Height	36.55 in 92.8 cm 928.26 mm 3.05 ft	36.55 in 92.8 cm 928.26 mm 3.05 ft
Display Manufacturer		Samsung
Display Type		VA
Display Bit Depth	10 bits	10 bits
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	0.43 mm	0.43 mm
Screen Pixel Density	59 ppi	59 ppi
Screen-to-Body Ratio	95.21 %	94.92 %
Backlight Source	Mini LED	Direct LED (Full-Array Local Dimming)
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Coating	Anti-glare/Matte	Glossy
HDR	HDR10 HLG (Hybrid Log Gamma) Dolby Vision HDR HDR10+	HDR10 HLG (Hybrid Log Gamma) Dolby Vision
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	37.42 kg 82 lbs	45.5 kg 100 lbs
Case Width with Stand	65.8 in 167.1 cm 1671.32 mm 5.48 ft	66 in 167.6 cm 1676.4 mm 5.5 ft
Case Height with Stand	40.8 in 103.6 cm 1036.32 mm 3.4 ft	41.5 in 105.4 cm 1054.1 mm 3.46 ft
Case Depth with Stand	13.9 in 35.3 cm 353 mm 1.16 ft	15 in 38.1 cm 381 mm 1.25 ft
Case Weight with Stand	38.2 kg 84 lbs	49.72 kg 109 lbs
Case Color	Black	Black
Hardware
CPU Cores	4	4
GPU Cores	2	2
TV Tuner	Analog (NTSC/PAL/SECAM) ATSC Clear QAM	Analog (NTSC/PAL/SECAM) ATSC Clear QAM
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 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz 802.11ac (IEEE 802.11ac) Wi-Fi Direct 2x2 MiMO
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 1 x HDMI 2.0 (ARC) 1 x AV Composite In 3.5 mm jack 1 x 3.5 mm Audio Out 1 x S/PDIF 1 x Satellite In (F-type female) 1 x USB 2.0 1 x Ethernet RJ45
Audio
Audio Speakers	2 x 17W	2 x 15W
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	HDR Pro Gamma iPQ Engine Quantum Dot Color Wide Color Gamut Contrast Control Zones HDCP (High-bandwidth Digital Content Protection) 2.2
Ergonomics
Case Width	65.8 in 167.1 cm 1671.32 mm 5.48 ft	66 in 167.6 cm 1676.4 mm 5.5 ft
Case Height	37.9 in 96.3 cm 962.66 mm 3.16 ft	37.9 in 96.3 cm 962.66 mm 3.16 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	400 x 300	300 x 300
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	120 Hz
Screen Interpolation Technology	Natural Motion	Clear Motion Index
Screen Interpolation Value	480	240
Screen Interpolation Measurement Unit	NM	CMI
Accessories
Extras	Voice-Enabled Remote Control - RC902N	Remote control - RC580
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 % - 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 75R646

TCL 75Q825