TCL C845K vs TCL C855K

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C845K compared with C855K

	TCLC845K	TCLC855K
Overview
Released
Released	2023	June 2024
Display
Panel
Panel	Mini-LED	Mini-LED
Panel detail
Panel detail	Quantum-dot LCD with full-array Mini LED local dimming	Quantum-dot LCD with full-array Mini LED local dimming
Resolution
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
Refresh rate
Refresh rate	144 Hz	144 Hz
HDR formats
HDR formats	Dolby Vision, HDR10, HDR10+, HLG	Dolby Vision, HDR10, HDR10+, HLG
HDR extras
HDR extras	Dolby Vision IQ; IMAX Enhanced	Dolby Vision IQ; IMAX Enhanced
Peak brightness
Peak brightness	2,000 nits, maker peak claim; measured brightness depends on size, picture mode and test pattern	UK feature pages claim 3,300 nits peak for 65 inches and 3,500 nits for 75–98 inches. UK specification tables separately list 2,000 nits system brightness without the same peak conditions; neither figure is a calibrated review measurement.
Colour range
Colour range	–	Maker UK tables give 97% DCI-P3 for 65/75 inches and 98% for 85/98 inches; measurement conditions unspecified
Picture processing
Picture processing	AiPQ 3.0 processing and Mini LED local dimming; both 2023 65-inch reviews found 576 zones on their tested units, not a series-wide count	AiPQ Pro processing; quantum-dot colour and Mini LED local dimming. AVForums reports 1,344 dimming zones on its tested 65C855K; this is not applied to other sizes.
Picture modes
Picture modes	–	Movie and IMAX Enhanced; no Filmmaker Mode in the reviewed 65-inch units. Reviews found picture settings needed adjustment.
Motion handling
Motion handling	TCL specifies a native 144 Hz maximum at 4K; Game Accelerator uses reduced-resolution processing	Native display up to 144 Hz at 4K; 240 Hz Game Accelerator at Full HD, not native full-resolution 4K refresh
Viewing angle
Viewing angle	–	AVForums found restricted off-axis viewing on its 65-inch VA-panel sample
Sizes
Sizes
Sizes	55, 65, 75, 85″	65, 75, 85, 98″
Largest size
Largest size	85″	98″ (better)
Gaming
HDMI ports
HDMI ports	4 (2 HDMI 2.1 at 4K 120 Hz+)	4 (2 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rate
Variable refresh rate	HDMI VRR, FreeSync Premium Pro	HDMI VRR, FreeSync Premium Pro
Auto low latency mode
Auto low latency mode	Yes	Yes
HDMI detail
HDMI detail	TCL labels all four sockets HDMI 2.1; AVForums verifies two 48 Gbps inputs on its UK review unit. HDMI 1 supports 4K 144 Hz and HDMI 2 supports 4K 120 Hz; HDMI 4 provides eARC separately.	TCL UK labels four inputs HDMI 2.1. AVForums and What Hi-Fi? verify two high-bandwidth 48 Gbit/s inputs on 65C855K; AVForums identifies HDMI 1 up to 4K 144 Hz, HDMI 2 up to 4K 120 Hz and eARC on HDMI 4 separately.
Variable refresh range
Variable refresh range	–	Up to 144 Hz at 4K; FreeSync Premium Pro
Game features
Game features	Game Master Pro 2.0; ALLM; game bar; aiming aid and shadow enhancement	Game Master Pro 3.0; ALLM; game bar; Dolby Vision gaming at 4K 120 Hz
Smart TV and sound
Smart TV platform
Smart TV platform	Google TV	Google TV
Processor
Processor	AiPQ 3.0	AiPQ Pro
Speakers
Speakers	2.1 channels	60 W
Dolby Atmos
Dolby Atmos	Yes	Yes
eARC
eARC	Yes	Yes
Wi-Fi
Wi-Fi	Wi-Fi 6 (802.11ax), dual-band MIMO	Wi-Fi 6
Bluetooth
Bluetooth	–	5.0
Speaker detail
Speaker detail	Exact K-model maker tables list 2 × 25 W plus 20 W on 55/65/85 inches, and 2 × 20 W plus 20 W on 75 inches. What Hi-Fi instead describes its 65-inch unit as 40 W; maker figures retained here without assuming equal revisions.	UK tables specify a 60 W Onkyo system; 2.1.2 channels on 65/75 inches, 2.2.2 on 85/98 inches. AVForums instead describes its 65-inch system as 50 W; the main figure follows TCL’s current specification table.
Audio features
Audio features	Dolby Atmos; DTS Virtual:X processing	Dolby Atmos; maker tables list DTS Premium Sound; AVForums identifies DTS Virtual:X on its 65-inch sample
Voice assistants
Voice assistants	–	Hands-free Google Assistant
Casting
Casting	Chromecast and T-cast; AirPlay 2 advertised on the exact K-model page	Miracast, Chromecast and AirPlay 2
Software updates
Software updates	The maker tables and reviews describe the original 2023 range. Later C845 X1/X2 hardware and firmware differences remain unverified; no chipset identity or revision-specific performance is inferred.	65C855X1 sheet guarantees eight years of software/firmware availability from the end of placement on the market; not an Android version-upgrade promise
TV tuners
TV tuners	DVB-T2/C/S2; analogue tuner; CI+ 1.4 with ECP	–
USB
USB	One USB 2.0 port in the exact K-model maker tables	Two USB ports on the 65-inch sample, as inspected by AVForums
Ethernet
Ethernet	RJ-45 LAN	RJ-45 LAN on the 65-inch sample, as inspected by AVForums
Optical audio out
Optical audio out	Optical digital audio output	Optical digital output on the 65-inch sample, as inspected by AVForums
Design and power
Size
Size	Configuration weights exclude stands	65-inch television 1,445 × 835 × 56 mm without stand, maximum depth; 1,445 × 869 × 298 mm with stand (width × height × depth). Configuration weights are TCL’s explicitly labelled weights without stands; its with-stand and packaging table entries have inconsistent labels.
Stand
Stand	–	65/75-inch stand width 341 mm; 85-inch 1,405 mm; 98-inch 1,707 mm, from TCL UK tables
VESA pattern
VESA pattern	–	400 × 300 mm (65 inches), 500 × 400 mm (75), 600 × 500 mm (85), 600 × 600 mm (98)
Power use
Power use	–	65C855X1 sheet linked by TCL UK gives 102 W SDR, 350 W HDR, 0.5 W standby and 2 W networked standby; exact regulatory variant
Energy class
Energy class	–	F SDR and G HDR for 65C855X1 in the sheet linked by TCL UK
Warranty
Warranty	–	Two-year manufacturer warranty on TCL UK pages
Colours
Colours	Brushed titanium metal front	–