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LG OLED C8 vs LG OLED CX

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

Better figure, where one is clearly better

LGOLED C8LGOLED CX
Overview
ReleasedMarch 2018March 2020
Display
PanelOLEDOLED
Panel detail–Self-lit OLED with pixel dimming
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HLG
HDR extrasAdvanced HDR by Technicolor also supportedDolby Vision IQ and Dynamic Tone Mapping
Picture processingQuad Step noise reduction, 4K Upscaler, adaptive colour enhancement and enhanced dynamic tone mappingAI Picture Pro, Face Enhancing, AI Upscaling, AI Genre Selection and AI Brightness
Picture modes–10 modes, including Filmmaker, Cinema, Game, HDR Effect and ISF Expert Bright Room and Dark Room
Motion handling120Hz panel with interpolation to 120fps (RTINGS); 4K HDMI input is limited to 60Hz. OLED Motion black-frame insertion is available.OLED Motion Pro; 120Hz panel refresh rate
Sizes
Sizes55, 65, 77″48, 55, 65, 77″
Largest size77″77″
Gaming
HDMI ports4 (0 HDMI 2.1 at 4K 120 Hz+)4 (all HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateNoneHDMI VRR, FreeSync, G-Sync Compatible
Auto low latency mode–Yes
HDMI detailFour HDMI inputs, one rear and three side; ARC on HDMI 2. No HDMI 2.1 or VRR support (RTINGS).Four HDMI 2.1 ports, 4K 120Hz with 10-bit HDR and 4:4:4 chroma at 40 Gbps (TechRadar); eARC on HDMI 2
Game featuresGame picture mode; no variable refresh rate (RTINGS)G-Sync Compatible, FreeSync, HGiG and Instant Game Response with VRR and ALLM
Smart TV and sound
Smart TV platformwebOSwebOS
Processorα9 Intelligent Processorα9 Gen3 AI Processor 4K
Speakers40 W, 2.2 channels–
Dolby AtmosYesYes
eARC–Yes
Wi-FiWi-Fi 5 (802.11ac)Wi-Fi 5
Bluetooth4.25.0
Speaker detailTwo woofers; front-firing with stand and down-firing without standLG UK lists 40 W, 2.2 channels for the 65″ OLED65CX6LA
Audio featuresClear Voice III, adaptive sound control and DTS decoding. RTINGS confirms Dolby Atmos over Dolby Digital Plus through ARC, but not Dolby TrueHD Atmos passthrough.AI Sound Pro, AI Acoustic Tuning, Clear Voice IV and Bluetooth Surround Ready
Voice assistantsUK Google Assistant requires software update and is unavailable in the Republic of Ireland; compatible Google Home and Alexa devices sold separately, with the same stated regional restrictionLG ThinQ AI, Google Assistant and Amazon Alexa; LG says Google Assistant is unavailable in the Republic of Ireland
Software updatesLG's US launch release schedules the 55″ and 65″ for the week of 19 March 2018 and the 77″ for April; release uses month precision, not an inferred first delivery day.webOS 5.0 at launch
TV tunersUK DVB-T2/C/S2UK OLED65CX6LA has DVB-T2/T, DVB-C and DVB-S2/S; 2 RF inputs and CI+ 1.4
USBThree USB ports, two rear and one side3 × USB
EthernetEthernet LAN portEthernet port
Optical audio outOptical digital audio output and headphone output on UK modelsOptical digital audio output; UK OLED65CX6LA also has a shared headphone/line output
Design and power
SizeWithout stand (W × H × D): 55″ 1228 × 707 × 47 mm; 65″ 1449 × 831 × 47 mm; 77″ 1722 × 991 × 56 mm. Exact LG Poland and Ukraine PLA sheets supply the 77-inch measurements.UK 65″ OLED65CX6LA without stand 1449 × 830 × 46.9 mm; with stand 1449 × 862 × 251 mm, 32.6 kg
StandWith stand (W × H × D): 55″ 1228 × 757 × 230 mm; 65″ 1449 × 881 × 230 mm; 77″ 1722 × 1052 × 253 mmUK 65″ OLED65CX6LA footprint 998 × 251 mm
VESA pattern55″ and 65″: 300 × 200 mm; 77″: 400 × 200 mmUK 65″ OLED65CX6LA 300 × 200 mm
Power use–Under 0.5 W standby
In the boxMR18 Magic Remote, two AA batteries and attached power cableMagic Remote MR20, 2 AA batteries and attached power cable

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