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TCL C745K vs TCL C845K

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

Better figure, where one is clearly better

TCLC745KTCLC845K
Overview
Released20232023
Display
PanelLED LCDMini-LED
Panel detailQuantum-dot LCD with full-array 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 brightness1,000 nits, maker peak claim; measured brightness depends on size, picture mode and test pattern2,000 nits, maker peak claim; measured brightness depends on size, picture mode and test pattern
Picture processingAiPQ 3.0 processing and full-array local dimming; AVForums verifies 120 zones on its tested 55-inch model, not a series-wide countAiPQ 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
Motion handlingTCL specifies native 144 Hz; maximum 4K refresh is 144 Hz. The 240 Hz Game Accelerator uses reduced-resolution Dual Line Gate processing.TCL specifies a native 144 Hz maximum at 4K; Game Accelerator uses reduced-resolution processing
Sizes
Sizes55, 65, 75″55, 65, 75, 85″
Largest size75″85″
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 detailTCL 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 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.
Game featuresGame Master Pro 2.0; ALLM; game bar; aiming aid and shadow enhancementGame Master Pro 2.0; ALLM; game bar; aiming aid and shadow enhancement
Smart TV and sound
Smart TV platformGoogle TVGoogle TV
ProcessorAiPQ 3.0AiPQ 3.0
Speakers30 W, 2.0 channels2.1 channels
Dolby AtmosYesYes
eARCYesYes
Wi-FiWi-Fi 5 (802.11ac), dual-band MIMOWi-Fi 6 (802.11ax), dual-band MIMO
Speaker detail2 × 15 W stereo, down-firing speakersExact 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.
Audio featuresDolby Atmos; DTS Virtual:X processingDolby Atmos; DTS Virtual:X processing
CastingChromecast and T-cast; AirPlay 2 advertised on the exact K-model pageChromecast and T-cast; AirPlay 2 advertised on the exact K-model page
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.
TV tunersDVB-T2/C/S2; analogue tuner; CI+ 1.4 with ECPDVB-T2/C/S2; analogue tuner; CI+ 1.4 with ECP
USBOne USB 2.0 port in the exact K-model maker tablesOne USB 2.0 port in the exact K-model maker tables
EthernetRJ-45 LANRJ-45 LAN
Optical audio outOptical digital audio outputOptical digital audio output
Design and power
Size55-inch television 1,225 × 711 mm without stand and 1,225 × 771 × 316 mm with stand (width × height × depth). Configuration weights exclude stands.Configuration weights exclude stands
VESA pattern400 × 300 mm (55 inches), 300 × 300 mm (65 inches) and 400 × 400 mm (75 inches), per exact UK maker datasheets–
ColoursBrushed titanium metal frontBrushed titanium metal front

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