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LG OLED B3 vs LG OLED BX

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

Better figure, where one is clearly better

LGOLED B3LGOLED BX
Overview
ReleasedApril 20232020
Display
PanelOLEDOLED
Panel detail–Self-lit OLED with pixel dimming and Ultra Luminance Pro
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HLG
Picture processingAI Picture Pro, AI Super Upscaling 4K, Dynamic Tone Mapping, AI Brightness Control and Filmmaker ModeAI Picture, face enhancement, AI Brightness, dynamic tone mapping, 4K upscaling and Filmmaker Mode
Motion handlingUK sheets label 100Hz native and explicitly support 4K 120fps HFR over HDMI.Native 120Hz OLED panel; OLED Motion Pro and 4K high-frame-rate playback. LG's 2020 rollout release states 120Hz for its OLED TVs, corroborated by the exact BX reviews.
Sizes
Sizes55, 65, 77″55, 65″
Largest size77″65″
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, G-Sync CompatibleHDMI VRR, FreeSync, G-Sync Compatible
Auto low latency modeYesYes
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 inputs, two HDMI 2.1 and two HDMI 2.0; two rear and two side connectors. LG specifies eARC on rear HDMI 3. HIFI.DE identifies the two rear inputs as HDMI 2.1; TechRadar's claim of four HDMI 2.1 inputs conflicts with LG's specification.
Game featuresHGiG, Game Optimiser and Game Dashboard; FreeSync Compatible and G-Sync CompatibleHGiG, NVIDIA G-SYNC Compatible, FreeSync and Instant Game Response with VRR and ALLM
Smart TV and sound
Smart TV platformwebOSwebOS
Processorα7 AI Processor 4K Gen6α7 Gen3 Processor 4K
Speakers20 W, 2.0 channels40 W, 2.2 channels
Dolby AtmosYesYes
eARCYesYes
Wi-FiWi-Fi 5Wi-Fi 5 (802.11ac)
Bluetooth5.05.0
Speaker detail20 W, 2.0-channel down-firing speakersDown-firing 2.2-channel speakers; 20 W woofer output and 10 W per channel within the 40 W total
Audio featuresDolby Atmos, Clear Voice Pro and AI Sound Pro virtual 5.1.2 up-mixAI Sound, acoustic tuning, Clear Voice III, Bluetooth Surround Ready and WiSA speaker support
Voice assistants–LG voice search, Google Assistant and Amazon Alexa
CastingApple AirPlay 2AirPlay support reported by HIFI.DE
Software updatesLaunch webOS 23; UK maker lists security updates until 31 December 2027webOS 5.0. LG's March 2020 US release scheduled BX availability for May, but that future schedule does not confirm actual first sale; the first on-sale month remains unconfirmed. TechRadar describes missing UK Freeview Play at launch.
TV tuners–UK DVB-T/T2, DVB-C and DVB-S/S2; CI+ 1.4, eight-day programme guide and USB recording/time shift. The German review's twin-tuner specification is not applied to these UK models.
USBTwo USB 2.0 inputsThree USB ports, one rear and two side
EthernetOne Ethernet inputEthernet LAN port
Optical audio outOne optical digital audio outputOptical digital audio output and shared headphone/line output
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): 55″ 1228 × 706 × 46.9 mm; 65″ 1449 × 830 × 46.9 mm
StandCentre stand footprint: 55″ and 65″ 559 × 246 mm; 77″ 749 × 270 mmWith stand (W × H × D; weight): 55″ 1228 × 744 × 246 mm, 19.9 kg; 65″ 1449 × 869 × 246 mm, 25 kg. Stand width 559 mm for both sizes.
VESA pattern55″ and 65″ 300 × 200 mm; 77″ 400 × 200 mm300 × 200 mm for both sizes
Power useUnder 0.5 W in standbyUnder 0.5 W standby; 100–240 V AC, 50–60Hz supply
In the boxMagic Remote with two AA batteries and attached power cableMR20 Magic Remote, two AA batteries and attached power cable

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