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LG OLED evo C6 vs Samsung QLED Q90T (2020)

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

Better figure, where one is clearly better

LGOLED evo C6SamsungQLED Q90T (2020)
Overview
ReleasedMarch 2026May 2020
Display
PanelOLEDLED LCD
Panel detailWOLED; 77″ and 83″ use a Primary RGB Tandem panel with Hyper Radiant Colour TechQuantum-dot LED-backlit LCD with Direct Full Array 16x local dimming. Samsung's UK tables do not publish native refresh or dimming-zone counts; they do confirm 4K 120 Hz Game Mode on HDMI 4 for each listed size.
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate165 Hz–
HDR formatsDolby Vision, HDR10, HLGHDR10, HDR10+, HLG
HDR extrasDolby Vision IQSamsung's Quantum HDR 2000 is a product label, not a measured 2000-nit result. HDR10, HDR10+ and HLG are confirmed by the maker and exact-model reviews; Dolby Vision is unsupported.
Screen finishGlossyAnti Reflection Screen in each UK maker table.
Colour range–Samsung's UK tables claim 100% colour volume with Quantum Dot; this is a maker claim, not a reviewer measurement for every size.
Peak brightness1,251 nits in HDR on a 10% window, 65″ (Tom's Guide)–
Picture processingAI Picture Pro, AI HDR Remastering, Brightness Booster; 77″ and 83″ add Hyper Radiant Colour Tech (up to 3.2x peak brightness)Quantum Processor 4K, AI Picture, Ultimate UHD Dimming, Contrast Enhancer and 4200 Picture Quality Index in the UK maker tables. PQI is not native refresh rate.
Picture modesFILMMAKER MODE with Ambient Light Compensation, Creator Original modeFilm Mode, Natural Mode and Contrast Enhancer in all three UK maker tables. What Hi-Fi? recommends adjusting the 55-inch picture for natural colour.
Motion handling–WIRED UK finds motion well controlled on its 55-inch unit; What Hi-Fi? finds an improvement over the prior model. Samsung's UK tables do not state native Hz, but explicitly confirm 4K 120 Hz Game Mode on HDMI 4 for every listed size.
Viewing angle–Ultra Viewing Angle in all three UK maker tables; both independent 55-inch reviews find the picture remains usable well off-centre.
Sizes
Sizes42, 48, 55, 65, 77, 83″55, 65, 75″
Largest size83″75″
Gaming
HDMI ports4 (all HDMI 2.1 at 4K 120 Hz+)4 (1 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, G-Sync Compatible, FreeSync PremiumFreeSync Premium
Auto low latency modeYesYes
HDMI detail4K 120 Hz on all four ports; eARC, VRR, ALLM, QMS and QFTFour HDMI inputs, with 4K 120 Hz Game Mode specifically on HDMI 4 according to Samsung's UK size tables. Those tables confirm eARC; the remaining HDMI inputs are not claimed as 4K 120 Hz capable. What Hi-Fi? says the set lacked official HDMI 2.1 certification despite its supported gaming features.
Input lag–What Hi-Fi? reports 11 ms on its exact UK 55-inch review unit; this reviewer measurement is not assigned to the other sizes.
Game featuresUp to 4K 165 Hz; G-SYNC Compatible, FreeSync Premium, HGiG, VESA ClearMR 10000, 0.1 ms response; Game Dashboard and Optimiser; Bluetooth Ultra Low Latency controllers (under 2.5 ms)Auto Game Mode (ALLM), Game Motion Plus, Dynamic Black EQ and FreeSync Premium in all three UK maker tables. 4K 120 Hz is limited to HDMI 4.
Cloud gamingNVIDIA GeForce NOW (4K 120 Hz HDR)–
Smart TV and sound
Smart TV platformwebOSTizen
Processoralpha 11 AI Processor 4K Gen3 (Dual AI Engine)Quantum Processor 4K
Speakers–60 W, 4.2.2 channels
Dolby AtmosYes–
DTS:XNo–
eARCYesYes
Wi-FiWi-Fi 6Wi-Fi 5
Bluetooth5.3Bluetooth 4.2
Speaker detail42″ 20 W, 2.0 ch; 48″ to 83″ 40 W, 2.2 chSamsung's UK tables specify 60 W, 4.2.2 channels, a woofer and Object Tracking Sound for all three sizes. The 4.2.2 layout describes speaker placement, not Dolby Atmos decoding.
Audio featuresVirtual 11.1.2 ch, AI Sound, AI Object Remastering Ultra, Dolby AtmosDolby Digital Plus, Dolby 5.1 decoder, Adaptive Sound+, Active Voice Amplifier and Q-Symphony in the UK maker tables. What Hi-Fi? confirms eARC can pass Atmos to external audio gear; the TV's speakers are not claimed to render Atmos.
Voice assistants–Bixby UK English, Alexa and listed Google Assistant compatibility in the maker tables; current service availability may differ.
Casting–Mobile-to-TV and TV-to-mobile mirroring, DLNA, Tap Mirroring, Wi-Fi Direct, Sound Mirroring and Multi-View in the UK maker tables. What Hi-Fi? also confirms AirPlay 2 on its 55-inch unit.
TV tuners–Twin DVB-T2/C/S2 digital tuners, analogue tuner, CI+ 1.4, UK HbbTV 2.0.1 and MHEG 5, guide, PVR and time shift in the maker tables.
Software updateswebOS 26; webOS Re:New Program upgrades for up to 5 years–
USB2 × USB 2.0Two USB inputs in every UK maker size table. What Hi-Fi?'s 55-inch tech-spec box says three; WIRED UK and Samsung say two, so the main count follows the maker.
Ethernet–Ethernet LAN built in.
Optical audio out–One optical digital audio output.
Design and power
SizeWithout stand, 42″ 932 × 540 × 41.1 mm; 48″ 1071 × 620 × 46.9 mm; 55″ 1222 × 703 × 45.1 mm; 65″ 1441 × 826 × 45.1 mm; 77″ 1711 × 982 × 47.1 mm; 83″ 1842 × 1055 × 52.9 mmWithout stand, width × height × depth: 55-inch 1227.6 × 705.6 × 34.8 mm; 65-inch 1446.5 × 828.3 × 34.8 mm; 75-inch 1670.6 × 957.8 × 35.2 mm. Configuration weights exclude stand. Each size is from its own UK maker table.
StandCentral pedestal stand; 65″ stands 880 mm tall on it, stand footprint 470 × 230 mmTitan Black Bending Plate central stand. With-stand weights from separate UK maker tables: 55-inch 24.4 kg; 65-inch 33.6 kg; 75-inch 48.7 kg. Unlike the Q90R, inputs and power connect directly to the TV.
Power use–Maximum from separate UK maker tables: 55-inch 245 W; 65-inch 305 W; 75-inch 335 W.
Energy class–G in Samsung's current UK A–G maker tables for all three sizes; this scale differs from the old Q90R B label.
Colours–Titan Black front and stand in the UK maker tables.
In the box–Samsung's UK tables list TM2050C Smart Control and, for GB/IE, TM1240A standard remote, plus power cable, manual and e-manual.
VESA pattern48″, 55″ and 65″ 300 × 200 mm; 83″ 400 × 400 mm–
WarrantyOLED Care+ covers the panel for 5 years–

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