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LG OLED B3 vs LG OLED B8

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

Better figure, where one is clearly better

LGOLED B3LGOLED B8
Overview
ReleasedApril 20232018
Display
PanelOLEDOLED
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HLG
HDR extras–Advanced HDR by Technicolor also supported
Picture processingAI Picture Pro, AI Super Upscaling 4K, Dynamic Tone Mapping, AI Brightness Control and Filmmaker Mode4K Upscaler, adaptive colour enhancement, noise reduction and enhanced dynamic tone mapping
Motion handlingUK sheets label 100Hz native and explicitly support 4K 120fps HFR over HDMI.Native 120Hz panel with motion interpolation and Motion Pro black-frame insertion (RTINGS). HDMI does not accept 4K at 120Hz; What Hi-Fi? reports internal HFR playback cannot combine HFR with HDR on the α7 processor.
Sizes
Sizes55, 65, 77″55, 65″
Largest size77″65″
Gaming
HDMI ports4 (2 HDMI 2.1 at 4K 120 Hz+)4 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, FreeSync, G-Sync CompatibleNone
Auto low latency modeYes–
HDMI detailFour HDMI inputs, with 4K 120Hz, VRR, ALLM and QMS on two; eARC on HDMI 3. RTINGS identifies the two 4K 120Hz inputs as HDMI 3 and 4.Four HDMI 2.0 inputs, one rear and three side; ARC on HDMI 2. No full-bandwidth HDMI 2.1 input (What Hi-Fi?).
Game featuresHGiG, Game Optimiser and Game Dashboard; FreeSync Compatible and G-Sync CompatibleGame picture mode; no variable refresh rate (RTINGS)
Smart TV and sound
Smart TV platformwebOSwebOS
Processorα7 AI Processor 4K Gen6α7 Intelligent Processor
Speakers20 W, 2.0 channels–
Dolby AtmosYesYes
eARCYes–
Wi-FiWi-Fi 5Wi-Fi 5 (802.11ac)
Bluetooth5.04.2
Speaker detail20 W, 2.0-channel down-firing speakersUK PLA models: 40 W 2.2-channel system with two woofers; UK SLC models: 20 W 2.0-channel system. Both are down-firing.
Audio featuresDolby Atmos, Clear Voice Pro and AI Sound Pro virtual 5.1.2 up-mixClear Voice III, One Touch Sound Tuning, adaptive sound control and DTS decoding
Voice assistants–UK 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 restriction
CastingApple AirPlay 2–
Software updatesLaunch webOS 23; UK maker lists security updates until 31 December 2027LG's 2018 lineup announcement confirms the B8 series; an exact earliest on-sale month was not established, so release retains year precision.
TV tuners–UK DVB-T2/C/S2
USBTwo USB 2.0 inputsThree USB ports, two rear and one side
EthernetOne Ethernet inputEthernet LAN port
Optical audio outOne optical digital audio outputOptical digital audio output and headphone output on UK models
Design and power
SizeWithout stand (W × H × D): 55″ 1228 × 708 × 46.9 mm; 65″ 1449 × 832 × 46.9 mm; 77″ 1723 × 992 × 55.3 mmWithout stand (W × H × D): both 55″ variants 1228 × 707 × 47 mm; both 65″ variants 1449 × 831 × 47 mm
StandCentre stand footprint: 55″ and 65″ 559 × 246 mm; 77″ 749 × 270 mmPLA Alpine stand versus SLC Crescent stand (LG confirmation in What Hi-Fi?). With stand (W × H × D): 55″ PLA 1228 × 752 × 220 mm; 55″ SLC 1228 × 776 × 319 mm; 65″ PLA 1449 × 876 × 220 mm; 65″ SLC 1449 × 901 × 319 mm.
VESA pattern55″ and 65″ 300 × 200 mm; 77″ 400 × 200 mm300 × 200 mm for both sizes and variants
Power useUnder 0.5 W in standby–
In the boxMagic Remote with two AA batteries and attached power cableMR18 Magic Remote, two AA batteries and attached power cable

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