LG C3 vs Vizio Quantum X TVs: Which is Better?

New LG OLED TV at CES 2023

LG C3 vs Vizio Quantum X TVs: Which is Better?

If you’re in the market for a new TV, you’ll likely evaluate the LG C3 vs Vizio Quantum X, the two latest TVs by LG and Vizio, respectively. Both are respectable names in the television industry. But which one is best?

The LG G2 and G3 have already made waves as some of the best sets on the market. LG’s OLED TVs were highly praised for their superb picture quality, color accuracy, and black levels. Meanwhile, the NanoCell models were hailed for their true-to-life colors.

LG is taking things one step further with its new LG C3 television, which could face competition from Vizio Quantum X. The Vizio V and M series had already earned a reputation for their powerful performance and value, and the Quantum X is taking things even further. So, how well do these two TVs stack up? Which of the two takes the upper hand regarding features, performance, and price? Here’s an LG C3 vs Vizio Quantum X comparison guide. 

LG C3 vs Vizio Quantum X: Side-by-Side Comparison 

Features LG C3Vizio Quantum X
Class Size42″, 48″, 55″, 65″, 77″, 83″ 65″
Viewable Display Size 42″, 48″, 55″, 65″, 77″, 83″ 64.50″ (1638.30mm)
Aspect Ratio 16:916:9
Resolution 4K3840 x 2160
Display Processor Alpha 9 AI Processor Gen 6IQ Ultra™
Dolby VisionYesYes 
HDMI Inputs 4 2.1 ports4 2.1 ports 
Infographic LG C3 vs Vizio Quantum
Best Value
VIZIO 75 inch 4K Smart TV
  • High-performance full array backlight
  • Spectacular bright highlight
  • Exceptional picture processing, 4K upscaling
  • Superfast navigation via Smartcast
We earn a commission if you make a purchase, at no additional cost to you.
11/29/2023 02:21 am GMT

LG C3 vs Vizio Quantum X: What’s the Difference?

When comparing TVs, it’s a good idea to consider their picture quality, sound, design, and other advanced features. The same applies to the LG C3 vs Vizio Quantum X comparison too. 

The latest TVs also come with Dolby Atmos Vision and HDR10+ technologies, which offer enhanced picture and sound quality. Smart features and the performance of TV sets are two things you shouldn’t overlook. Let’s see how LG C3 compares with Vizio Quantum X so you can pick the best.


When LG revealed the LG C3 during the Consumer Electronics Show in January 2023, the company displayed 55 and 65-inch sizes. But the TV will also be available in other variants, including 48, 77, and 83 inches.

Meanwhile, the Vizio Quantum X has a class size of 65 inches with a viewable display of 64.50 inches. The 16:9 aspect ratio is a similarity between both TVs. The same is true for the 3840 x 2160 resolution.

Picture Features

Featuring a 120Hz panel and 4K resolution (3840 x 2160 pixels), the LG C3 has a fast response time, crystal-clear images, and vibrant colors. LG’s flagship Alpha 9 Gen 6 AI processor optimizes video and film content for improved picture quality.

LG C3 is 4k 120fps compatible. That means it can display 4k content at 120 frames per second, ideal for gaming and streaming. Meanwhile, the HDR10 Pro and HLG Pro support offer greater detail and contrast, giving the content more depth.

LG C3 also has Dolby Vision IQ and Dolby Atmos. Both technologies work in tandem to improve the picture and sound performance of the TV. The Dolby Vision IQ adjusts the HDR brightness to match the viewing environment, while Dolby Atmos creates an immersive sound experience.

The OLED Dynamic Tone Mapping Pro technologies used in this TV help reduce noise in dark scenes and add more detail to bright areas. It also allows the TV to adjust screen brightness according to your watching content. It also features AI Super Upscaling Pro, which upscales lower-resolution video content to 4K resolution. That makes older or low-resolution content look clearer and sharper on the TV screen.

The Vizio Quantum X compares well to the LG C3, as it has a 120Hz panel and a 3840 x 2160 picture quality with 4k compatibility. Like the LG C3, it also has HDR10, HDR10+, and HLG for improved contrast and detail. Additionally, it has Dolby Vision support.

However, the Quantum X does not have LG’s AI Super Upscaling Pro technology. Instead, it has DCI-P3 color space, which gives it a more comprehensive range of colors than the LG C3.


The Vizio Quantum X will be much admired by A/V enthusiasts and gamers for its four HDMI ports. Do note that only two can display a 4k signal. These ports are present at the back of the Vizio Quantum X:

  • 4x HDMI 2.1 (2x 4K @ 60 Hz, 2x 4K @ 120Hz, 1x HDMI ARC/eARC)
  • 1x USB 2.0
  • RF connection
  • Analog audio output
  • Ethernet (LAN) input
  • Digital audio output (optical)

On the other hand, the LG C3 also has four 2.1 HDMI ports with ALLM(auto low latency mode). One of these ports has eARC support. 

Smart Features

When it comes to smart features, LGC3 beats Vizio Quantum X. The LG C3 television has Google Assistant, Amazon Alexa, Personalized Picture Wizard, and an innovative webOS platform. LG has also improved its webOS smart platform.

The home screen has fewer web pages so that you can navigate easily with less scrolling. LG has also introduced Quick Cards, a feature that groups together features and apps, making it easier to find all your entertainment options in one place.

The customizable quick mode on the left side of the TV screen lets you access several settings options. Some options include sound modes, viewing options, and picture modes.

The LG C3 also has the Personalized Picture Wizard. It shows you eight sets of six pictures with different brightness and appearance settings. You can choose the two images you prefer based on their saturation, brightness, and color. The Personalized Picture Wizard will calibrate the TV’s image quality based on your selected images.

The Google Assistant is integrated into the TV and can help you with simple tasks like searching for content or adjusting the volume. You can also use Alexa to control your TV and access its features.

In comparison, the Vizio Quantum X also has plenty of smart features. It has a built-in Chromecast and Apple AirPlay that let you share content from your phone to the TV. It also has Google Assistant, Alexa, and Apple Siri integration.

The Vizio TV also features ProGaming™ Engine, which elevates the gaming experience with faster and smoother graphics. The ProGraming engine diminishes video lag and stutter. Moreover, the variable refresh rate and HDR tone mapping provide gamers with an immersive gaming experience.

Sound Quality

The LG C3 has 2.2-channel 40-watt speakers that provide clear audio and excellent sound quality. The speakers’ low-distortion design produces crisp, accurate sound without distortion or background noise.

However, you can also complement the TV’s sound with the LG soundbar, which can be attached to the wall. It has a 3.1.3-channel configuration, so you can experience immersive sound when watching movies or listening to music.

Meanwhile, the Vizio Quantum X has two 15 watts speakers that provide decent audio quality. You can also connect the TV to the Vizio sound bar for a more immersive sound experience. The Vizio sound bar supports Dolby Audio and has a wireless subwoofer for deep bass and powerful sound.

If you stack the sound quality of LG C3 vs Vizio Quantum X, the Vizio TV takes the win. 

Color Display

The Vizio Quantum X features Quantum Color display technology, which can display up to 1.07 billion colors. This TV can produce an extraordinary range of colors that will bring out the beauty in anything you watch. Plus, the full array LED provides uniform and precise lighting control, allowing for significant local dimming effects.

The LG C3 also offers an incredible color experience with Self-lit OLED pixels. The OLED panel also has a local dimming feature to enhance the viewing experience. Compared to the LG C2, the C3 has a brighter OLED.

The extra brightness is due to Alpha 9 Gen 6’s lighting algorithm. The algorithm allows the TV to separate the background and foreground, boosting brightness in areas that get your focus first.

LG C3 vs Vizio Quantum X: The Complete History

The LG C series started with the LG C1, released in January 2021. Available in 65 and 48-inch models, it wowed viewers with its innovative webOS interface, gaming capabilities, and vibrant picture quality, Then, the LG C2 came in March 2022, featuring a slightly updated design, better LG ThinQ AI integration, and support for Dolby Vision HDR.

LG unveiled C3 at the Consumer Electronics Show (CES) in Las Vegas. Other TVs introduced with this model included the LG G3 and the LG M3. It is speculated that the LG C3 will be available for sale in April or May. The price point will be around the same range as the C2.

Meanwhile, the Vizio Quantum X was released in 2022 as a successor to the Vizio P-Series Quantum. Like its predecessor, it has a high contrast ratio and VA panels. However, the Quantum X has better local dimming due to deeper black displays. Plus, the recent release also features better uniformity.

LG C3 vs Vizio Quantum X: 5 Must-Know Facts

  • The LG C3 is an upgrade from the original LG C series OLED TV. It’s a high-performance 4K Ultra HDTV with advanced picture and sound technology.
  • Vizio Quantum X features AMD FreeSync, a variable refresh rate technology, and the latest Quantum Color technology that produces vibrant colors and life-like images.
  • Like its see-through TVs, LG has also incorporated the OLED display on the C3. The TV features the latest OLED display technology, producing deep blacks and vivid colors.
  • LG C3’s AI Sound Pro technology provides a virtual 9.1.2 surround sound with a 2.2 40-watt sound system.
  • Both LG and Vizio have sound bars and wireless subwoofers that can enhance the sound experience.

LG C3 vs Vizio Quantum X: Which One Is Better?

We’re down to the wire. LG C3 or Vizio Quantum X TVs, which TV is the best? LG C3 comes out on top with regard to size and performance department. It’s available in six sizes, featuring a 16:9 aspect ratio. Meanwhile, the Vizio Quantum X has a 65-inch screen with the same aspect ratio as the LG TV.

Both TVs also have similar resolutions with 4k compatibility. Likewise, the number and types of HDMI ports are also the same. The difference arises in the display processor. LG uses the Alpha 9 AI Processor Gen 6, designed for improved picture quality and color accuracy, while Vizio IQ Ultra™.

The Vizio Quantum X is a good choice if you prioritize sound quality over picture quality. It has an advanced audio system with a built-in subwoofer, which provides powerful surround sound. What the LG TV lacks in sound quality, it compensates with a wide range of features, such as Google Assistant and custom picture settings.

Ultimately, both TVs offer similar features, but with minor differences. The choice between LG C3 and Vizio Quantum X comes down to your references and what you want in your next smart TV.

Best Value
VIZIO 75 inch 4K Smart TV
  • High-performance full array backlight
  • Spectacular bright highlight
  • Exceptional picture processing, 4K upscaling
  • Superfast navigation via Smartcast
We earn a commission if you make a purchase, at no additional cost to you.
11/29/2023 02:21 am GMT

LG C3 and Vizio Quantum X TVs: Technology Updates

Lately, there haven’t been any formal declarations regarding technological enhancements for either the LG C3 or the Vizio Quantum X televisions. As of now, it appears that no official updates have been disclosed for these TV models.

LG C3 and Vizio Quantum X TVs: Looking Forward

Anticipated advancements in technology are poised to enhance the LG C3 and Vizio Quantum X TVs in the following ways:

  1. Enhanced OLED Panels: One of the most highly anticipated updates revolves around the integration of new OLED panels that boast improved brightness and contrast. These televisions are already renowned for delivering exceptional picture quality, but with the incorporation of these enhanced attributes, their visual performance could potentially reach new heights.
  2. Integration of HDMI 2.1a Standard: A significant technological leap lies in the integration of the forthcoming HDMI 2.1a standard. This evolution would facilitate swifter data transfer rates, alongside support for vital features such as Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM). Especially beneficial for gaming enthusiasts, these features have the potential to mitigate screen tearing and minimize latency, thereby enhancing the overall gaming experience.
  3. Upgraded AI Upscaling Capabilities: Advancements in processors will usher in improved AI upscaling technology. This innovation leverages the power of artificial intelligence to enhance the quality of content with lower resolutions. As a result, even standard definition (SD) and high definition (HD) content can be elevated to a higher visual standard, underscoring the potential for these TVs to transform the viewing experience for various types of content.
  4. Enriched Gaming Features: Building upon their existing strong gaming capabilities, both the LG C3 and Vizio Quantum X TVs are poised to introduce novel features tailored for gamers. The integration of Nvidia G-Sync and AMD FreeSync functionalities is on the horizon, further enhancing the gaming experience by mitigating screen tearing and reducing lag. This enhancement caters to the demands of gamers who seek uninterrupted, smooth gameplay.

These advancements are poised to deliver a more immersive and dynamic viewing experience for users across a variety of content types, from entertainment to gaming.

Frequently Asked Questions

Is the LG C3 better than the Vizio Quantum X for gaming?

The low input lag, great response time, and excellent image quality of the Vizio Quantum X make it a great choice for gaming. You might experience a slight blur around fast-moving objects on the screen, though. The LG C3, although decent for gaming, is better for your viewing needs.

Is the LG C3 cheaper than the Vizio Quantum X?

Yes, the LG C3 is cheaper than the Vizio Quantum X, making it an excellent option for those on a budget.

Is Vizio Quantum X worth it?

The Vizio Quantum X is worth it if you need a high-end TV with incredible image quality and features. It has excellent contrast, low input lag, and impressive brightness, making it great for watching movies or playing video games. The Quantum Color technology provides stunningly vivid colors and deep blacks for an enjoyable experience.

What is the difference between Vizio Quantum and Quantum X?

The Quantum X has better color uniformity and deeper blacks. It also features local dimming and better viewing angles. Other features between both TVs are pretty similar.

What size is LG C3?

The LG C3 TV comes in 42″, 48″, 55″, 65″, 77″, and 83″ sizes. You can choose the size that suits your needs.

Does Vizio Quantum X have better sound than LG C3?

Yes, the Vizio Quantum X has better sound than the LG C3. The Quantum X features Dolby Atmos and integrated woofers for immersive audio. You can improve the sound on the LG with a soundbar.

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