How to choose the right resolution when buying a TV: Full HD, 2K, 4K, or 8K?

What is TV resolution?

Simply put, TV resolution is the number of pixels that make up the image on the screen. Each pixel is a tiny dot that displays color and detail, and the more pixels, the sharper the image.

TVs come in various resolutions. Older TV models or 32-inch screens typically only have around 1 million pixels (720p). Mainstream TVs under 49 inches usually have over 2 million pixels (1080p – Full HD).

Meanwhile, 4K Ultra HD models have 8 million pixels and are common in TVs 50 inches and larger. And with the highest-end TVs currently available, 8K boasts up to 33 million pixels, delivering incredible detail.

Resolution is often touted as a crucial factor when buying a TV, as terms like "4K" or "8K" sound incredibly advanced and impressive. However, in reality, resolution isn't the only factor determining image quality.

A TV with better HDR (high dynamic range), a more impressive contrast ratio, or the ability to display more vibrant colors will produce a better picture than a TV that simply has more pixels. Therefore, when choosing a TV, consider these factors as well, instead of just relying on the resolution number.

Full HD TV

Full HD (short for Full High Definition) TVs are televisions with a resolution of 1920 x 1080 pixels, often referred to as 1080p. This is one of the most common standards for television screens, providing sharper, more detailed images and more realistic colors compared to TVs with lower resolutions, such as HD (1280 x 720 pixels).

Full HD TVs are typically found on models 32 inches and larger and are suitable for a variety of entertainment needs such as watching movies, playing games, watching television, or connecting with other multimedia devices.

Although more advanced display technologies like 4K ( Ultra HD) or 8K are now available, Full HD TVs remain a popular choice due to their reasonable price and good picture quality for the price range.

2K TV

2K TVs are televisions with a resolution of 2048 x 1080 pixels, higher than Full HD (1920 x 1080 pixels) but lower than 4K. Although the term "2K" is less common in the home TV market, it is frequently used in the film industry and digital cinema (DCI 2K).

In reality, many TVs advertised as "2K" are actually just Full HD TVs with 1080p resolution, as the difference between 1920 x 1080 and 2048 x 1080 is negligible. Compared to 4K, 2K TVs have fewer pixels, meaning the image may be less sharp when displayed on a large screen.

Nowadays, 2K TVs are no longer common because most modern TVs have switched to 4K to provide a sharper and more vibrant viewing experience.

4K TV

4K TVs are televisions with a resolution of 3840 x 2160 pixels, which is approximately 8 million pixels, four times the resolution of Full HD (1080p) TVs. This means that the images displayed are sharper, more detailed, and smoother, especially when viewed on a large screen.

With a 4K TV, you can enjoy more realistic image quality and more vibrant colors thanks to HDR (High Dynamic Range) technology, which is included in many modern TV models. Furthermore, most streaming platforms like Netflix, YouTube, Disney+, and Apple TV+ support 4K content, allowing you to fully utilize the power of this TV.

However, for the best experience, you should choose a TV with a high refresh rate (120Hz), upscaling technology to display even non-4K content clearly, and most importantly, a high-quality panel such as OLED, QLED, or Mini-LED to take full advantage of 4K resolution.

8K TV

8K TVs are televisions with a resolution of 7680 x 4320 pixels, equivalent to over 33 million pixels, four times higher than 4K TVs and sixteen times higher than Full HD (1080p) TVs. This delivers ultra-sharp images, incredibly fine detail, and impressive realism, especially on large screens of 65 inches and above.

However, one of the major challenges for 8K TVs today is the limited availability of native 8K content. To address this, most high-end 8K TVs incorporate AI upscaling technology, which improves the quality of 4K, and even 1080p, video to near 8K sharpness.

8K TVs typically come with the latest technologies such as Mini-LED, QLED, OLED, along with HDR, high refresh rates (120Hz or higher), and surround sound to deliver a superior entertainment experience.

However, 8K TVs are still quite expensive, and to fully appreciate their quality, you need a high-quality content source and a viewing space large enough to truly feel the difference compared to 4K.

In the future, resolution may no longer be the most important factor when evaluating the display quality of a TV. Currently, TV lines generally follow a common standard, such as 4K for both 50-inch and 100-inch screens, but differences in pixel density can affect image quality.

However, with the development of MicroLED technology, the link between screen size and resolution will gradually disappear. This technology allows for the creation of screens with flexible sizes without being constrained by fixed resolutions.

This means that a 50-inch TV in the bedroom and a 100-inch TV in the living room could have completely different resolutions, instead of both being 4K as they are now.

Thanks to significant advancements in video processing and image upscaling technology, differences in resolution are becoming imperceptible to the naked eye. Advanced AI algorithms and image processors can improve sharpness, reproduce detail, and adjust color and contrast, ensuring that images displayed on all screen sizes look equally sharp and vibrant.

This ushers in a new era for TV, where the viewing experience is no longer limited by traditional specifications, but instead optimized by intelligent display technology.