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LG OLED evo C4 vs Samsung OLED S90H

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

Better figure, where one is clearly better

LGOLED evo C4SamsungOLED S90H
Overview
ReleasedApril 2024May 2026
Display
PanelOLEDOLED (42, 48, 55, 65, 83″), QD-OLED (77″)
Panel detailWOLED with pixel dimmingWOLED (LG Display); the 77-inch is QD-OLED
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
Refresh rate144 Hz165 Hz
HDR formatsDolby Vision, HDR10, HLGHDR10, HDR10+, HLG
HDR extrasOLED Dynamic Tone Mapping ProHDR10+ Adaptive, HDR10+ Gaming and HDR10+ Advanced
Screen finish–Glare Free
Picture processingα9 AI Super Upscaling 4K, AI Genre Selection, AI Brightness Control, Pixel Dimming4K AI Upscaling Pro, AI Motion Enhancer Pro, Real Depth Enhancer, Auto HDR Remastering Pro, Color Booster Pro, HDR Brightness Optimizer, AI Optimized / AI Customization
Picture modes10 modes, including Filmmaker, Cinema, Game and (ISF) Expert Bright Room and Dark RoomFilmmaker Mode, EyeComfort Mode; Smart Calibration (Basic)
Motion handlingOLED MotionMotion Xcelerator 165 Hz
Viewing angle–Ultra Viewing Angle
Sizes
Sizes42, 48, 55, 65, 77, 83″42, 48, 55, 65, 77, 83″
Largest size83″83″
Gaming
HDMI ports4 (all HDMI 2.1 at 4K 120 Hz+)4 (all HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateHDMI VRR, G-Sync Compatible, FreeSyncHDMI VRR, FreeSync Premium, G-Sync Compatible
Auto low latency modeYesYes
HDMI detail4 × HDMI with 4K 120Hz, eARC (HDMI 2), VRR, ALLM and QMS on all four4K 165 Hz on HDMI 1/2/3/4; eARC; Anynet+ (HDMI-CEC)
Variable refresh rangeUp to 144 Hz–
Game featuresG-Sync Compatible, FreeSync, HGiG, Game Optimiser and Game DashboardFreeSync Premium Pro on 48–83″ (FreeSync Premium on 42″); Game Motion Plus, Dynamic Black EQ, Super Ultra Wide Game View, Game Bar, Mini Map Zoom, Surround Sound, HGiG, AI Auto Game Mode, AI Gaming Optimizer
Cloud gaming–Samsung Gaming Hub
Smart TV and sound
Smart TV platformwebOSTizen
Processorα9 AI Processor 4K Gen7NQ4 AI Gen3 Processor
Dolby AtmosYesYes
eARCYesYes
Wi-FiWi-Fi 5Wi-Fi 6E
Bluetooth5.15.3
Speaker detail42″ 20 W, 2.0 ch; 48″ 40 W, 2.2 ch; LG UK doesn't list the other sizes; down-firing42″ 20 W, 2ch; 48–83″ 40 W, 2.1ch; Object Tracking Sound Lite
Audio featuresα9 AI Sound Pro (virtual 9.1.2 up-mix), AI Acoustic Tuning, Clear Voice Pro, Bluetooth Surround ReadyQ-Symphony, Active Voice Amplifier Pro, Adaptive Sound Pro, AI Sound Controller Pro, 360 Audio, Audio Pre-selection Descriptor
Voice assistantsHands-free voice control; Amazon Alexa built inBixby and Alexa built in, with far-field voice; works with Alexa and Google Assistant speakers
CastingApple AirPlay 2Apple AirPlay, Google Cast, screen and sound mirroring from Samsung phones
Software updateswebOS 24; security updates until 31 December 2028Security updates until at least 31 December 2031
TV tuners2 RF inputs; CI slotDVB-T2/C/S2 and analogue; CI+ 1.4 slot; HbbTV 2.0.4
USB3 × USB 2.02 × USB-A
Ethernet1 × Ethernet1 × LAN
Optical audio out1 × optical1 × optical
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″ 1851 × 1062 × 55.3 mmWithout stand, 42″ 934.4 × 542.6 × 39.5 mm; 48″ 1069.3 × 619.9 × 39.6 mm; 55″ 1225.4 × 708.6 × 39.9 mm; 65″ 1444.3 × 831.7 × 39.9 mm; 77″ 1718.5 × 987.6 × 44.9 mm; 83″ 1851.0 × 1062.8 × 44.9 mm
StandFeet on the 42″ (718 × 170 mm); central pedestal on 48″ to 77″ (470 × 230 mm up to 520 × 267 mm on 77″); 1199 × 279 mm stand on 83″42″ Simple Blade; 48–83″ Simple Plus Blade (Laser Slim design)
VESA pattern42″ to 77″ 300 × 200 mm; 83″ 400 × 400 mm42″ 200 × 200 mm; 48–65″ 300 × 200 mm; 77″ and 83″ 400 × 300 mm
Power useUnder 0.5 W standbyTypical/max, 42″ 52/195 W; 48″ 62/230 W; 55″ 76/380 W; 65″ 85/510 W; 77″ 112/660 W; 83″ 128/740 W; 0.5 W standby
Energy classG (42″ to 55″); F (65″ to 83″)42″ G; 48″ G; 55″ F; 65″ E; 77″ E; 83″ F
Colours–Graphite Black
In the boxMagic Remote MR24 with 2 AA batteries, power cable (attached)–

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