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LG OLED B3 vs LG OLED GX

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

Better figure, where one is clearly better

LGOLED B3LGOLED GX
Overview
ReleasedApril 2023April 2020
Display
PanelOLEDOLED
Panel detail–Self-lit OLED panel in LG's Gallery chassis, supplied with a flush wall mount
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HLG
HDR extras–Dolby Vision IQ, LG HDR10 Pro processing and Filmmaker Mode; no HDR10+ claim
Picture processingAI Picture Pro, AI Super Upscaling 4K, Dynamic Tone Mapping, AI Brightness Control and Filmmaker ModeAI Picture Pro, AI Upscaling, AI Brightness and HDR Dynamic Tone Mapping Pro
Picture modes–Ten modes including Filmmaker, Cinema, Game and ISF Expert bright and dark room
Motion handlingUK sheets label 100Hz native and explicitly support 4K 120fps HFR over HDMI.OLED Motion Pro, with 4K high frame rate support; LG Switzerland's exact OLED55GX6LA specification describes a 100/120 Hz native panel
Sizes
Sizes55, 65, 77″55, 65, 77″
Largest size77″77″
Gaming
HDMI ports4 (2 HDMI 2.1 at 4K 120 Hz+)4 (all 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 2.1 inputs; 4K 120 Hz input and eARC on HDMI 2
Game featuresHGiG, Game Optimiser and Game Dashboard; FreeSync Compatible and G-Sync CompatibleHDMI VRR, ALLM, G-SYNC Compatible, FreeSync and HGiG. LG's current UK GX6LA specifications list FreeSync; launch-era review coverage described it as pending a software update.
Smart TV and sound
Smart TV platformwebOSwebOS
Processorα7 AI Processor 4K Gen6α9 Gen3 AI Processor 4K
Speakers20 W, 2.0 channels60 W, 4.2 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 60 W, 4.2-channel system with a 20 W woofer on all three UK size specifications
Audio featuresDolby Atmos, Clear Voice Pro and AI Sound Pro virtual 5.1.2 up-mixAI Sound Pro, AI Acoustic Tuning, Clear Voice IV, LG Sound Sync and WiSA speaker support
Voice assistants–LG ThinQ AI, Google Assistant and Amazon Alexa built in
CastingApple AirPlay 2Apple AirPlay 2 and HomeKit, Screen Share and DIAL
Software updatesLaunch webOS 23; UK maker lists security updates until 31 December 2027webOS 5.0. LG UK's rollout table scheduled 55- and 65-inch models for the week beginning 6 April 2020 and the 77-inch for the week beginning 11 May; an exact first retail day was not verified.
TV tuners–UK DVB-T2/T, DVB-C and DVB-S2/S with two RF inputs and CI slot
USBTwo USB 2.0 inputsThree side USB ports
EthernetOne Ethernet inputOne LAN port
Optical audio outOne optical digital audio outputOne optical digital audio output; shared headphone and line output also listed
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-inch 1225 × 705 × 23.1 mm; 65-inch 1446 × 829 × 19.9 mm on LG UK specifications
StandCentre stand footprint: 55″ and 65″ 559 × 246 mm; 77″ 749 × 270 mmFlush wall mount included; table stand is an optional purchase. LG lists TV-plus-stand weights of 22, 30.5 and 40.2 kg respectively.
VESA pattern55″ and 65″ 300 × 200 mm; 77″ 400 × 200 mm–
Power useUnder 0.5 W in standbyUnder 0.5 W standby on LG UK specifications
In the boxMagic Remote with two AA batteries and attached power cableFlush wall mount and Magic Remote; table stand is not included

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