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TCL C805K vs TCL C855K

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

TCLC805KTCLC855K
Overview
ReleasedOctober 2023June 2024
Display
PanelMini-LEDMini-LED
Panel detailQuantum-dot LCD with full-array Mini LED local dimmingQuantum-dot LCD with full-array Mini LED local dimming
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate144 Hz144 Hz
HDR formatsDolby Vision, HDR10, HDR10+, HLGDolby Vision, HDR10, HDR10+, HLG
HDR extrasDolby Vision IQ; IMAX EnhancedDolby Vision IQ; IMAX Enhanced
Peak brightnessTCL’s UK feature-page claim is 1,300 nits for 50–75 inches, 1,500 nits for 85 inches and 1,600 nits for 98 inches. The 98-inch page title instead says 1,500; these are maker peak claims, not calibrated measurements.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 rangeQuantum-dot colour; no single measured gamut figure applied across sizesMaker UK tables give 97% DCI-P3 for 65/75 inches and 98% for 85/98 inches; measurement conditions unspecified
Picture processingAiPQ 3.0 processing, UHD deep-learning upscaling and local dimming; AVForums reports 384 zones on its tested 55C805K, not a series-wide countAiPQ 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 modesMovie and IMAX Enhanced modes; white-point and colour-management calibration controlsMovie and IMAX Enhanced; no Filmmaker Mode in the reviewed 65-inch units. Reviews found picture settings needed adjustment.
Motion handlingNative display up to 144 Hz at 4K; 240 Hz Game Accelerator uses Dual Line Gate and is not native full-resolution 4K refreshNative display up to 144 Hz at 4K; 240 Hz Game Accelerator at Full HD, not native full-resolution 4K refresh
Viewing angleAVForums and TechRadar both found restricted off-axis viewing on their 55-inch samplesAVForums found restricted off-axis viewing on its 65-inch VA-panel sample
Sizes
Sizes50, 55, 65, 75, 85, 98″65, 75, 85, 98″
Largest size98″98″
Gaming
HDMI ports4 (2 HDMI 2.1 at 4K 120 Hz+)4 (2 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, FreeSync Premium ProHDMI VRR, FreeSync Premium Pro
Auto low latency modeYesYes
HDMI detailFour inputs in TCL’s UK specification table; its 55-inch FAQ incorrectly lists three. TCL labels all four HDMI 2.1, but AVForums verifies two full-bandwidth inputs on 55C805K, HDMI 1 up to 4K 144 Hz and HDMI 2 up to 4K 120 Hz; eARC uses HDMI 4 independently.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 rangeUp to 144 Hz at 4K; FreeSync Premium ProUp to 144 Hz at 4K; FreeSync Premium Pro
Game featuresGame Master Pro 2.0; ALLM; game bar; Dolby Vision gamingGame Master Pro 3.0; ALLM; game bar; Dolby Vision gaming at 4K 120 Hz
Smart TV and sound
Smart TV platformGoogle TVGoogle TV
ProcessorAiPQ 3.0AiPQ Pro
Speakers–60 W
Dolby AtmosYesYes
eARCYesYes
Wi-FiWi-Fi 5 (802.11ac), dual-band MIMOWi-Fi 6
Bluetooth–5.0
Speaker detailMaker UK tables specify 2 × 15 W stereo for 50–85 inches; 98 inches has an Onkyo 2.1 system with 2 × 20 W plus a 20 W subwooferUK 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 featuresDolby Atmos; UK specification tables list DTS Virtual:X; feature prose also advertises DTS:XDolby Atmos; maker tables list DTS Premium Sound; AVForums identifies DTS Virtual:X on its 65-inch sample
Voice assistantsHands-free Google Assistant; works with compatible Alexa devicesHands-free Google Assistant
CastingChromecast and T-cast; AirPlay 2 and HomeKit advertised by TCLMiracast, Chromecast and AirPlay 2
Software updates–65C855X1 sheet guarantees eight years of software/firmware availability from the end of placement on the market; not an Android version-upgrade promise
TV tunersDVB-T2/C/S2; analogue tuner; CI+ 1.4 with ECP–
USBOne USB 3.0 on 50–85 inches; 98 inches adds a USB 2.0 portTwo USB ports on the 65-inch sample, as inspected by AVForums
EthernetRJ-45 LANRJ-45 LAN on the 65-inch sample, as inspected by AVForums
Optical audio outOptical digital audio outputOptical digital output on the 65-inch sample, as inspected by AVForums
Design and power
Size55-inch television 1,225 × 711 mm without stand; with stand 1,225 × 771 × 316 mm (width × height × depth). 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.
StandCentral stand on 50–85 inches; 98-inch stand width 1,740 mm65/75-inch stand width 341 mm; 85-inch 1,405 mm; 98-inch 1,707 mm, from TCL UK tables
VESA pattern300 × 300 mm (50/65 inches), 400 × 300 mm (55), 400 × 400 mm (75), 600 × 400 mm (85), 500 × 600 mm (98), as listed by TCL UK400 × 300 mm (65 inches), 500 × 400 mm (75), 600 × 500 mm (85), 600 × 600 mm (98)
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–F SDR and G HDR for 65C855X1 in the sheet linked by TCL UK
ColoursBrushed titanium metal front–
WarrantyTwo-year manufacturer warranty on TCL’s UK pagesTwo-year manufacturer warranty on TCL UK pages

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