TCL C655 / C69B (43" - 50") vs Samsung QN90F / QN92F

The quality of the HDR effect in the TCL C69B / C655 television is quite average. A brightness level of 350 nits, while not the worst, still does not allow for fully enjoying HDR effects, which require higher luminance to show their strength. Additionally, despite the use of a quantum dot coating (QLED), the television offers average coverage of the wide DCI-P3 color gamut at 91%, which may limit its richness of colors in HDR content.

The Samsung QN90F can truly shine in brightness. In our measurements, it achieved over 2200 nits, which directly translates to the viewing experience. Practically, this means that when a very bright scene appears in a movie – for example, the sunrise in The Meg – the screen looks as if natural light is actually shining on us. This isn’t just a number from a chart, but a real sense of image intensity! However, the TV cannot always deliver that full power. With smaller details, such as headlights or lamps, the brightness drops to 500–700 nits. This is a conscious decision by the algorithms – this way, the contrast between large and small elements is better controlled, and the image does not lose balance. Importantly, this is still a huge improvement compared to last year's QN90D, where similar details were almost invisible, shining at just 200 nits. Here, the HDR effect is much more consistent and credible. The only downside is the colors. The coverage of the DCI-P3 palette stopped at 91%, which can be considered a rather average result in this price range.

The television TCL C69B / C655 tested in movie mode unfortunately does not meet expectations regarding color accuracy. Although movie mode suggests better reproduction, it has little in common with film. There are quite a few errors visible, especially in white balance – both for HD and 4K HDR content – where the dominance of the blue color is very apparent. For the viewer, this means that the image becomes unnaturally cool, affecting the overall perception of colors and the visual impression. The color checker confirms these errors, showing that colors shift to cooler shades.

As for brightness characteristics and the associated contrast, gamma is very unstable for material, which can make the image slightly darker. The EOTF curve for 4K material shows some errors, with significant deviations at the end of the chart, negatively affecting the perception of darker areas of the image.

We tested color reproduction in the QN90F in Filmmaker mode, and as usual with Samsung TVs, this mode proves to be the best starting point right out of the box. However, this does not mean that the image is free from flaws. The white balance in SDR and HDR content was surprisingly good – the colors didn’t shift in any direction, and even in the factory setting, it looked solid. However, a problem arose with the gamma and EOTF curves, which are responsible for how the TV manages brightness. Here, the QN90F significantly brightened the entire image, causing black levels and colors to lose their intensity, and the overall effect resembled a milky filter being applied. Fortunately, Samsung, unlike many competitors in the miniLED world, provides users with a lot of tools to control the settings that we don’t find with other manufacturers, such as Chinese brands. Therefore, we decided to check if it was possible to extract the full potential of the QN90F because we know that such a high series can deliver much more.

After calibration, the movie mode on the TCL C69B / C655 television improves in quality. The most significant improvement can be seen in tonal quality, and the white balance is much better – without major errors. We will no longer see an excessive dominance of cool tones. Gamma has also been improved, which translates to a more stable representation of brightness and contrast. However, due to the limitations of the television's average color palette, Colour Checker tests for 4K materials did not achieve remarkable results. Despite these technological limitations, the image has become more authentic, positively influencing the reception of film content.

After our adjustment of the settings, the QN90F showed what it is really capable of – and it must be admitted that it has one of the best images we have seen on a miniLED screen this year. As we mentioned earlier, the white balance was not a major issue even in its factory version, but only after the gamma calibration were we able to get close to nearly reference values. The same is true for HDR content, where the EOTF curve after correction presents mature and consistent results. Indeed, in some films, it can be noticed that the smallest elements of the image are slightly brightened, and with a limited number of dimming zones, there is still a risk of the halo effect. It should be remembered, however, that such phenomena are characteristic of all miniLED televisions, and it's hard to expect miracles even from the QN90F. The most important thing is that after calibration, the television shows an image that, in terms of conveying the director's vision, confidently competes even with many OLED screens available on the market.

The "Gradual Smoothing" function works very well on the TCL C69B television and, surprisingly, does not remove desired effects like film grain – unlike some solutions from other manufacturers. Unfortunately, the image scaling looks poor. The TV artificially sharpens the image, causing the edges of objects to be heavily jagged. This state of affairs may appeal to some users who prefer a more "hard" look of the image, but it is not an ideal solution for those who value naturalness and the smoothness of details.

QN90F handles upscaling very well. Materials in lower resolution, even SD, are boosted to a clear and sharp image, showcasing plenty of details in the background. This is a significant advantage because the television makes older content or everyday TV look much better than on most budget screens. However, the issue of overscan remains, which is the trimming of the edges of the screen that cannot be turned off in Samsungs. This can cause some subtitles on the screen to disappear or a relative's face from a wedding on a VHS tape to be slightly cropped. 😉

The digital image processing also works well. In the menu, we find a feature called "noise reduction," which can smooth out tonal transitions and improve the reception of lower-quality materials, such as from YouTube. In medium setting, the effect is the most beneficial – it does not heavily interfere with details while eliminating the "stair-stepping" problem in colors. However, it is important to remember that the feature can be quite aggressive and can also remove natural grain in older films, so it's best to use it in moderation.

The TV TCL C69B / C655 in its smallest variants offers decent, although not perfect, results in terms of motion fluidity. In the case of movies, the TV has a "Flicker Reduction" function that allows for motion fluidity adjustment on a scale from 1 to 10. With this option, we can adjust the appearance of the image to cinematic or more theatrical preferences (with lower or higher speed).

The QN90F is equipped with a panel that has a maximum refresh rate of 165 Hz, and while primarily PC gamers will appreciate this advantage, it is still worth highlighting. In movies or sports broadcasts, we are limited to the classic 120 Hz, but this is not a cause for concern. In practice, the additional motion smoother plays a more significant role here. With the "Motion Clarity" setting, we can adjust the image to our own preferences. The blur reduction option is responsible for smoothness and trailing in sports. Meanwhile, the "judder reduction" function improves motion smoothness in productions recorded at 24 frames, such as movies and series. If we set it high, the film looks smoother and more fluid than it was actually filmed. Lower values, on the other hand, maintain its cinematic "rawness" with the visible film frame.

The TCL C69B / C655 television in its smallest variants offers a range of features dedicated to gamers, such as ALLM (Auto Low Latency Mode), VRR (Variable Refresh Rate), Dolby Vision for gamers, and Game Bar. ALLM automatically switches the television to low latency mode, improving responsiveness and minimizing delays in control. VRR allows for synchronization of the screen refresh rate with the number of frames generated by the console, eliminating tearing, resulting in smoother gameplay. Dolby Vision for gamers ensures better color and contrast representation in games that support this format, resulting in better image quality. Meanwhile, Game Bar provides quick access to game settings and allows monitoring of key parameters, such as input lag.

However, the television has certain limitations that may affect gaming comfort. The 60 Hz panel does not allow for displaying signals with a higher refresh rate, which may impact image smoothness in dynamic games. The lack of support for G-Sync technology for PCs may also be noticeable when gaming on a computer, especially with demanding, fast-paced titles.

QN90F has almost everything to become the perfect television for gamers. Things like four HDMI ports, VRR, ALLM, and a refresh rate of up to 165 Hz don't need to be reminded to anyone. It deserves high praise for the Game Motion Plus mode, which is a proprietary motion smoothing feature for games. Thanks to this, you can add a few “artificial” frames and make the image generated from the console look smoother than it should. This is a very unique solution in the world of televisions – competitive systems usually do not offer this – and that's why Samsung has had a strong bargaining chip among gamers for years, even despite the lack of support for the still niche Dolby Vision in games.

So why are we writing about a “nearly” perfect screen? Unfortunately, like in the latest Samsung models, we noticed a problem with the lack of HGiG support. This is a solution that allows the television to leave the control of tone mapping to the console so that games look exactly as the creators intended. Worse, this feature was previously present and disappeared after software updates. Instead of minor improvements, we got a step back. It's a pity, because without this shortcoming, the QN90F could truly be the perfect choice for gamers in the miniLED category.