LG C4 vs Samsung S90D: 5 Aspects to Consider

By Naila Syifa
Updated April 2024

LG C4 vs Samsung S90D

Among the top-rated OLED TV models released in 2024, the LG C4 and Samsung S90D are perhaps the most similar in terms of specs and performance. Both TVs are great mid-range options for those seeking an immersive home entertainment experience, but which one should you choose?

Let's examine both TVs across 5 key consideration aspects to help you make the best decision.

Key Takeaways

LG C4 has a better overall sound quality thanks to its 2.2-channel speaker compared to the 2.1-channel speaker in the S90D. Both TVs can be integrated into a smart home ecosystem, but the C4 supports Apple HomeKit while the S90D supports SmartThings.

LG C4 vs Samsung S90D

LG C4 OLED evo

Versatile Premium TV

✓ α9 AI Processor 4K Gen7
✓ 2.2 Channel Speaker System
✓ Compatible with Apple HomeKit
✓ webOS 24

Samsung S90D OLED TV

Samsung S90D OLED TV

Premium Smart TV

✓ NQ4 AI Gen2 Processor
✓ Active Voice Amplifier Pro
✓ Built-in Bixby and SmartThings Hub
✓ Samsung Tizen OS

#1 Price

LG C4 vs Samsung S90D

Samsung S90D

Both LG C4 and Samsung S90D are available in 6 size options, including 42", 48", 55", 65", 77", and 83". The price point for each model varies depending on the screen size, and the larger the screen, the more expensive it is to purchase.

However, for each size, both TVs offer very similar pricing. For example, for the 55-inch size, both the C4 and S90D are priced at US$2,000, while for the 65-inch size, both TVs cost US$2,700. This makes it difficult to choose based on price alone, as the two models are closely matched in this regard.

#2 Design

LG C4 vs Samsung S90D


Both TVs have slim profile and minimalist design, with thin bezels and a sleek appearance that blends well with any home decor. However, unlike the more expensive LG G4 or Samsung S95D which is uniformly thin from top to bottom, the C4 and S90D have a slightly thicker chunk in the bottom side to house the internal components and ports.

LG C4 houses 4 HDMI and 3 USB ports, while the Samsung S90D provides 3 HDMI and 2 USB ports. More ports allow more devices to be connected simultaneously, so the LG C4 may be slightly more versatile in this regard. Other ports available in both TVs include an Ethernet/LAN port, an antenna port, and a 3.5mm Ex-Link (RS-232C) port.

#3 Picture Quality

LG C4 vs Samsung S90D

Samsung S90D

LG C4 and Samsung S90D OLED TVs are equipped with a range of features that deliver outstanding picture quality, including Dolby Vision for enhanced HDR performance and Filmmaker Mode to preserve the creator's original intent.

Both TVs have a high refresh rate of 120Hz, which ensures smooth motion handling and reduces blur during fast-paced scenes. However, when connected to compatible gaming PCs, both TVs raise the bar by supporting ultra-fast 144Hz gaming for an even more responsive and lag-free gaming experience.

LG C4 vs Samsung S90D

Alpha 9 AI Processor Gen 7 in LG C4

The C4 is powered by Alpha 9 AI Processor Gen 7, which enhances picture quality and allows for image upscaling to 4K, so you can enjoy excellent image clarity and detail even with lower-resolution content. This OLED TV also features Dynamic Tone Mapping Pro, which constantly adjusts the HDR performance on a scene-by-scene basis for optimal image quality.

Samsung S90D, on the other hand, utilizes 20 AI neural networks with its NQ4 AI Gen2 Processor to optimize image quality and upscale 4K content similar to the LG C4. OLED HDR+ delivers powerful brightness and rich contrast, while the Real Depth Enhancer brings a heightened sense of depth and realism to the viewing experience.

#4 Audio Quality

LG C4 vs Samsung S90D

Object Tracking Sound Lite in Samsung S90D

Dolby Atmos is present in both OLED TVs, providing an immersive 3D surround sound that puts you right in the middle of the action. However, the LG C4 has a slightly enhanced overall sound thanks to its 2.2-channel speaker consisting of two woofers and two tweeters, delivering more powerful and dynamic audio performance compared to the 2.1-channel speaker of the S90D, consisting of only two woofers and one tweeter.

However, the Samsung S90D stands out with its Object Tracking Sound Lite feature, which dynamically adjusts the audio to follow the on-screen action for an immersive sound experience. The Active Voice Amplifier Pro is also present in this model, enhancing dialogue clarity when it detects high ambient noise.

LG C4 has a similar dialogue-enhancing feature called the Clear Voice Pro, but instead of adjusting the audio based on ambient noise, it optimizes the vocal clarity based on the content being played. As a result, dialogue will be enhanced while background music and sound effects will be minimized. However, this may have a negative impact on the overall audio quality, so it is more suitable for content that is heavily focused on dialogue, such as documentaries.

#5 Smart Features

LG C4 vs Samsung S90D

LG webOS 24

Both the LG C4 and Samsung S90D offer a robust suite of smart features that enhance the overall user experience. The LG C4 runs on the latest webOS 24 platform, providing an intuitive interface for navigating content, accessing a wide range of popular streaming apps, and allowing the creation of up to 10 password-protected user profiles.

The Samsung S90D, on the other hand, is equipped with the company's proprietary Tizen operating system, which offers a sleek and visually appealing interface. Tizen provides access to a vast library of streaming apps, as well as integrated voice control through Samsung's Bixby assistant and built-in Amazon Alexa.

LG C4 vs Samsung S90D

LG Home Hub

Both OLED TVs can also function as smart home hubs to control compatible smart home devices from one place. Both provide support for Matter, the new smart home connectivity standard that aims to provide seamless interoperability between various smart home devices and platforms.

One difference is that while the LG C4 can be integrated into the Apple HomeKit ecosystem, the Samsung S90D can't. Instead, the S90D supports controlling SmartThings devices with the SmartThings Hub feature. Depending on which ecosystem you may already be invested in, this could be an important factor in your decision.

LG C4 vs Samsung S90D

Final Thoughts

LG C4 vs Samsung S90D

Samsung S90D

In conclusion, both the LG C4 and Samsung S90D are excellent OLED TV options that offer a premium home entertainment experience. While they share many similarities in terms of specifications and performance, the choice between the two ultimately comes down to personal preferences and the specific features that are most important to you.

Factors such as audio quality, smart home integration, and the overall user interface may sway your decision in one direction or the other. We recommend you go with the LG C4 if you prioritize superior audio quality, more ports, and Apple HomeKit support. On the other hand, the Samsung S90D may be the better choice if you value the enhanced dialogue clarity and integration with the Samsung ecosystem with features like built-in Bixby and SmartThings Hub.

If you like to read more about Smart TVs, check out our other relevant guides here:

Samsung S90D vs S95D

Samsung S90D vs S90C

Samsung S90D vs LG G4

LG C4 vs Samsung S95D

LG C4 vs Samsung S90C

LG C4 vs LG G3

LG C4 vs Sony A95L

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