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The Verdict

The LG C4 42-inch OLED is the definitive choice for users seeking a high-end desktop monitor replacement or a premium small-room display. Its primary strength lies in the α9 AI Processor Gen7, which drives perfect black levels and infinite contrast that no LCD can match. For gamers, the jump to a 144Hz refresh rate and 0.1ms response time—coupled with four full-bandwidth HDMI 2.1 ports—positions this as a top-tier peripheral for both PC and console setups.

Value vs. Trade-off
The trade-off is primarily found in peak brightness; because of its smaller size, the 42-inch model does not get as bright as its 55-inch+ counterparts that feature more aggressive heat dissipation. Additionally, the built-in 20W speakers lack the punch required for a true cinematic experience, and the glossy screen coating can be distracting in rooms with high ambient light.

However, these limitations are minor when weighed against the unmatched color accuracy and pixel-level light control. While you pay a premium for the OLED tech, the addition of the 5-year webOS Re:New program ensures the software stays current, making the C4 a smart, long-term investment for anyone who refuses to compromise on picture quality for a smaller footprint.

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Rating
ModelOLED42C4PUAOLED55C4PUA—OLED65C4PUA—OLED65C5PUA.AUSOLED55C5PUA.AUSZ
Native Refresh Rate144Hz144Hz120Hz144Hz—144Hz144Hz
Use CaseGaming, Home TheaterGaming, Home TheaterGaming, Home TheaterGaming, Home TheaterHome TheaterGaming, Home TheaterGaming, Home Theater
HDR SupportDolby Vision, HDR10Dolby Vision, HDR10HDR10, Dolby Vision, HDR10+Dolby Vision, HDR10Dolby Vision, HDR10Dolby Vision, HDR10Dolby Vision, HDR10
Sound FeaturesObject Tracking SoundHDMI eARC—HDMI eARC—HDMI eARCHDMI eARC
Gaming FeaturesALLM (Auto Low Latency Mode), GameBar, 4K @ 120Hz, Dolby Vision Gaming (4K@120Hz)ALLM (Auto Low Latency Mode), GameBar, 4K @ 120Hz, 240Hz @ 1080p4K @ 120HzALLM (Auto Low Latency Mode), GameBar, 4K @ 120Hz—4K @ 120Hz4K @ 120Hz
ModelsC4C4C4C4C4LG EvoLG Evo
Year2024202420242024202420252025
Supported Audio FormatsDolby AtmosDolby AtmosDolby AtmosDolby AtmosDolby Atmos, DTS:XDolby AtmosDolby Atmos
Voice AssistantsAlexaAlexa—Alexa, ThinQ AI—AlexaAlexa

About this product

  • SELF-LIT PIXELS. LG's signature OLED technology creates an incredible watching experience and stellar picture quality illuminated with over 8 million self-lit pixels. Take in rich and accurate colors from the brightest to darkest parts of the scene thanks to 100% Color Volume* and with 100% Color Fidelity.
  • 144 HZ REFRESH RATE. Enjoy crisp, smooth visuals with a 0.1ms response time and up to 144Hz refresh rate. LG OLED TVs feature NVIDIA G-Sync, AMD FreeSync Premium, and VRR for enhanced gaming quality. With four HDMI 2.1 inputs, connect all your devices effortlessly. The LG Game Dashboard and Game Optimizer provide complete control whether you game on consoles or in the cloud.
  • DOLBY VISION, FILMMAKER AND DOLBY ATMOS: Experience the magic of the big screen right from your couch. Every LG OLED comes loaded with Dolby Vision for extraordinary color, contrast and brightness, plus Dolby Atmos* for sound you can feel all around you. Land in the center of the action with FILMMAKER MODE, allowing you to see films just as the director intended.
  • a9 AI PROCESSOR GEN7. The C4's exclusive processor is the brains behind a truly unforgettable TV experience. You'll get smooth, vivid picture no matter what you watch with AI Super Upscaling which automatically enhances picture quality whether you're watching sports, movies, or a late-night favorite. Multi View with 2 screens lets you split your screen into 2 unique views so you can watch even more than before, everything looks and sounds incredible on a LG OLED TV.
  • WEBOS 24 & LG CHANNELS. No matter which TV you choose, your LG TV makes it easier than ever to find what you need and more. Browse all your favorite streaming apps and let LG Channels connects you to 300+ free channels of sports, fitness, cooking and more.

Specifications

Brand
LG
Model
OLED42C4PUA
Display
OLED
Screen
42 Inch
Resolution
4K
Backlight
Direct Lit
Native Refresh
144Hz
Use Case
Gaming, Home Theater
Brand
LG
HDR Support
Dolby Vision, HDR10
OS
webOS
Sound Features
Object Tracking Sound
Gaming Features
ALLM (Auto Low Latency Mode), GameBar, 4K @ 120Hz, Dolby Vision Gaming (4K@120Hz)
TV VRR
HDMI VRR, AMD FreeSync Premium, NVIDIA G-SYNC Compatible
Models
C4
Year
2024
Audio Formats
Dolby Atmos
AI Features
AI Picture Enhancement
Upscaling
4K AI Upscaling
Voice Assistants
Alexa
HDMI Ports
4.0 HDMI Ports
Width
36.69291338582678 inches
Height
22.716535433070867 inches
Depth
6.7 inches
Weight
22.266688480672634 Pounds
Colour
Black
Warranty
1 Year Parts & Labor
Released
2024-03-04T00:00:01Z
Part number
OLED42C4PUA
Manufacturer
LG
UPC
195174077351
GTIN
00195174077351

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