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LG OLED B4 vs Panasonic LZ2000

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

Better figure, where one is clearly better

LGOLED B4PanasonicLZ2000
Overview
ReleasedMarch 20242022
Display
PanelOLEDOLED
Panel detailSelf-lit 4K OLED with pixel dimmingPanasonic's 2022 Master OLED Pro configuration; the 77-inch version is called Master OLED Pro Cinema Size.
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate120 Hz120 Hz
HDR formatsDolby Vision, HDR10, HLGDolby Vision, HDR10, HDR10+, HLG
HDR extras–Dolby Vision IQ, HDR10+ Adaptive, HLG Photo and Filmmaker Mode with intelligent sensing.
Peak brightness–AVForums measured just under 1,000 cd/m² peak HDR brightness on its 55-inch sample; this is not a figure for the other sizes.
Picture processingAI Picture Pro, α8 AI Super Upscaling 4K, AI Brightness Control, Dynamic Tone Mapping Pro and Filmmaker ModeHCX Pro AI Processor with Auto AI genre detection and ambient light colour-temperature adjustment; Netflix Adaptive Calibrated Mode and Calman calibration support.
Picture modesPersonalised Picture Wizard, Vivid, Standard, APS, Cinema, Sports, Game, Filmmaker and ISF Expert bright/dark room modesFilmmaker Mode with intelligent sensing, True Cinema, Auto AI and Professional calibration modes.
Motion handlingNative 120Hz panel; OLED Motion and HDMI 4K 120 fps inputPanasonic confirms full-resolution 4K 120 Hz input with VRR; the 60 Hz Refresh Mode reduces gaming latency.
Sizes
Sizes48, 55, 65, 77″55, 65, 77″
Largest size77″77″
Gaming
HDMI ports4 (all HDMI 2.1 at 4K 120 Hz+)4 (2 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, FreeSync Premium, G-Sync CompatibleHDMI VRR, FreeSync Premium
Auto low latency modeYesYes
HDMI detailFour inputs support 4K 120Hz, VRR, ALLM and QMS; eARC on HDMI 3Panasonic's UK manuals specify HDMI1 and HDMI2 for 4K 120 Hz, HDMI VRR and AMD FreeSync Premium. HDMI2 also carries eARC; HDMI3 and HDMI4 accept 4K at lower frame rates. ALLM is supported on all four inputs.
Input lag–AVForums measured 9.2 ms at 4K 60 Hz with Fast input lag and 60 Hz Refresh Mode on its 55-inch sample; TechRadar measured 14.5 ms at 1080p 60 Hz in a separate test.
Variable refresh rangeLG specifies 40–120Hz–
Game featuresGame Optimiser and Dashboard, HGiG, AMD FreeSync Premium, NVIDIA G-SYNC Compatible and Dolby Vision gaming at 4K 120HzGame Control Board displays signal and latency information with picture controls; Panasonic also lists automatic detection of compatible NVIDIA graphics cards. AVForums found Dolby Vision gaming limited to 60 Hz.
Smart TV and sound
Smart TV platformwebOSmy Home Screen
Processorα8 AI Processor 4KHCX Pro AI Processor
Speakers20 W, 2.0 channels–
Dolby AtmosYesYes
eARCYesYes
Wi-FiWi-Fi 5IEEE 802.11a/b/g/n/ac, 2.4 and 5 GHz
Bluetooth5.1Bluetooth 5.0
Speaker detailDown-firing 2.0-channel speakersPanasonic UK manuals specify 150 W for 55 inches (70 W front array + 15 W × 2 side + 15 W × 2 upward + 20 W woofer), 160 W for 65 inches (80 W front array with the same other outputs), and 170 W for 77 inches (90 W front array with the same other outputs).
Audio featuresα8 AI Sound Pro with virtual 9.1.2 up-mixing, acoustic tuning, Clear Voice Pro, Bluetooth Surround Ready and WiSA up to 2.1 channelsTechnics-tuned 360° Soundscape Pro with directional front speaker array, side- and upward-firing speakers, Dolby Atmos, Space Tune and a switchable 3.5 mm headphone/subwoofer socket.
Voice assistantsBuilt-in Amazon Alexa and LG intelligent voice recognition; supported languages vary by countryGoogle Assistant and Alexa functions are listed by Panasonic for the UK model, subject to service availability.
CastingApple AirPlay 2, ThinQ remote app and Multi Viewmy Home Screen 7.0 includes streaming apps, local media playback, Easy Mirroring and my Scenery.
TV tuners–UK DVB-S/S2 satellite, DVB-T/T2 terrestrial and PAL I analogue tuners; two satellite inputs.
Software updateswebOS 24; LG states four upgrades over five years with regional scheduling differences and security support through 31 December 2028. LG Australia's March 2024 launch notice confirms the range available now and lists 55/65-inch B4 March availability; release records that first confirmed series month, not a universal UK size-specific date.–
USBTwo USB 2.0 portsOne USB 3.0 and two USB 2.0 ports.
EthernetEthernet LAN portRJ45 10/100 Ethernet.
Optical audio outOne optical digital audio outputFibre-optic PCM and Dolby Audio output.
Design and power
SizeWithout stand (W × H × D): 48″ 1070 × 620 × 45.9 mm; 55″ 1228 × 708 × 45.9 mm; 65″ 1449 × 832 × 45.9 mm; 77″ 1719 × 989 × 50.9 mmWithout stand, Panasonic UK lists 55-inch 1227 × 764 × 69 mm and 19.5 kg; 65-inch 1448 × 888 × 69 mm and 24.5 kg; 77-inch 1723 × 1050 × 78 mm and 43 kg. With pedestal: 55-inch 1227 × 786 × 350 mm and 24.5 kg; 65-inch 1448 × 910 × 350 mm and 29.5 kg; 77-inch 1723 × 1073 × 350 mm and 50 kg.
StandWith stand (W × H × D; weight): 48″ 1070 × 684 × 235 mm, 11.7 kg; 55″ 1228 × 772 × 235 mm, 14.5 kg; 65″ 1449 × 896 × 235 mm, 17.3 kg; 77″ 1719 × 1057 × 319 mm, 23.5 kg. Stand footprint: 48″ 933 × 235 mm; 55/65″ 1057 × 235 mm; 77″ 1403 × 319 mm.Supplied central swivel pedestal.
VESA pattern300 × 200 mm across these UK sizesPanasonic specifies 300 × 300 mm for the 55-inch model; no common pattern is claimed for all sizes.
Power useUnder 0.5 W standby; 100–240 V AC, 50–60Hz supplyPanasonic specifies 84 kWh per 1,000 hours for the 55-inch model in SDR and 0.5 W standby; these figures do not represent the other sizes.
Energy class–Panasonic rates the 55-inch model G under the UK energy-label system; no common class is claimed for all sizes.
In the boxMagic Remote MR24, two AA batteries and attached power cablePanasonic's UK instructions list a remote control, batteries, pedestal and mains lead. Its 2022 announcement and UK line-up give no first on-sale month; the release is recorded at year precision.

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