TCL C6K vs Samsung QN80F 100"

TCL C6K is a moderately bright TV that can showcase its full potential under the best cinematic conditions – the maximum brightness is around 600 nits. In scenes with large, intense light sources, the HDR effect can be really satisfying, providing a sense of cinematic brilliance. However, it should be noted that when managing the backlighting zones, there are situations where some elements become dimmed and sometimes can even become barely visible. It is clear that there is a lack of proper algorithm optimization here, although looking at the technical parameters in this price range, the design itself performs very well.

When it comes to HDR in Filmmaker mode, the QN80F can make a great first impression on you. Our lab tests showed that under the best conditions, the TV can achieve brightness exceeding 1200–1300 nits. These are truly remarkable results, which make HDR effects in many films look incredible. The TV is simply bright enough that it doesn’t need to artificially adapt the picture – bright parts of scenes have the right "power" and actually look like a light source. Of course, the lab is one thing, and everyday viewing is another. In practice, during movie scenes, brightness usually oscillates between 700–1100 nits. These are still great values that, in most cases, give a strong sense of realism and make the lights on screen really capable of dazzling you. The problem arises in exceptionally challenging sequences, where, like almost every mini-LED, it reveals its limitations. A good example is Sicario 2: scenes with helicopters in the night sky look much weaker, and the lights lose intensity, dropping to around 370 nits, making it hard to speak of serious admiration. This leads us to the topic of colors. Although we are dealing with a QLED, the coverage of the DCI-P3 color palette is about 90%. This is fairly average for a quantum dot TV. In practice, this means that some colors may appear less saturated than we would expect, especially in demanding HDR productions.

This year's TCL televisions feature a Filmmaker mode, and it must be admitted that it is definitely the best choice straight out of the box. This is the mode we recommend for everyday watching of movies and series. Unfortunately, as is often the case, the best doesn't mean perfect. In the case of SDR content, the image was too warm because the red was strongly emphasized in the white balance. On the other hand, with HDR content, we had the opposite impression – the image became cooler than it should have been due to excess blue. Additionally, the brightness characteristic sometimes led to highlights being blown out. In practice, this resulted in quite noticeable color test inaccuracies that are hard to accept in a mode advertised as "by the creators."

Samsung QN80F performs best in Filmmaker mode, which is designed to faithfully convey the creators' intentions. And indeed – it is a mode in which the TV showcases its potential. But let’s not deceive ourselves, it is far from perfect. In SDR content, a problem with white balance became apparent. Slight deficiencies in green and a clear excess of red caused the screen to take on a pinkish hue. You don’t even need measuring tools to notice this – in everyday viewing, the slightly shifted color palette could be quite noticeable, and in color checker tests, colors were even "jumping" out of their reference fields. With HDR content, the situation was a bit better, as the white balance was closer to ideal, but another problem emerged – brightness management. The EOTF curve often caused the image to become too bright, which spoiled the perception of contrast, and in dynamic scenes led to a slight "flickering" in the reception. We actually already mentioned this in the sections about black levels and HDR. The good news, however, is that Samsung provides a lot of tools for improvement. The QN80F allows for really detailed calibration, including a 20-point white balance. And since the manufacturer left us so many options, we decided to see how the TV would perform after solid corrections.

Thanks to the white balance correction, it was possible to significantly reduce the C6K's tendency to distort colors, which resulted in a very good final outcome. After calibration, we will no longer observe the effect of excessive warming of scenes in SDR or overly cooling the image in HDR. However, it is worth taking a closer look at the brightness characteristics. In SDR content, there are few complaints – the image looks really good, especially in older movies, TV shows, or materials from YouTube. This is much worse for HDR content. Analysis of the EOTF curve suggests that everything is fine, but in practice (EOTF in films), the limitations of the construction become apparent. The TV tends to overly brighten the smallest parts of the frame, and in other situations, it can dim the entire scene too much. The effect of calibration is therefore evident, and in terms of color, the C6K has gained quite a lot, but certain limitations arising from local dimming and, in fact, its management by the C6K simply cannot be overcome.

After calibrating the QN80F, it immediately showed that it is capable of much more. The pink tint that could previously spoil the reception has disappeared, and the white balance finally looks as it should – natural and without excessive deviations. The colors have gained depth, and the image has become more saturated and consistent, making movies simply more enjoyable to watch. It's a bit like removing a light haze from the screen – suddenly everything seems sharper and clearer. Brightness management has also improved. The television no longer gets lost so easily in dynamic changes, and the EOTF graph shows that the curve tracking is much more stable. Of course, there are no miracles – the limited number of zones still means that small, bright elements can be slightly brightened, but that is due to the construction itself, not the settings. After this adjustment, the QN80F feels like a more mature piece of equipment, and watching movies finally provides the satisfaction one expects from a television even in the higher class.

The TCL C6K performs quite well in terms of scaling. Lower quality materials look acceptable, and the lack of overscan issues means that the image is displayed in full, without cropping. However, one cannot expect miracles – content of very low quality will not gain new life here, as the image processor has its limitations. On thin lines or details, the characteristic tearing is visible, which reveals the absence of advanced image enhancement algorithms. It is also a pity that the C6K lacks the feature for smoothing tonal transitions – in older films or video materials, color banding can be noticeable and may be bothersome during long viewing sessions.

With lower quality materials, such as YouTube videos or older television recordings, the QN80F can showcase its stronger and weaker points. If strange color transitions or artifacts start appearing on the screen, it's worth using the noise reduction function. The best setting is at the "medium" level – it smooths out the problematic segments without blurring the entire image. However, one compromise must be kept in mind: this function always removes film grain. If someone enjoys its presence in older productions, it's better to leave the reduction turned off because, regardless of the setting, the grain simply disappears.

Resolution scaling, or upscaling, is another strong point of Samsung. The QN80F may not be the best TV on the market, but it performs very well in its price range, which is very important for such a large size as a 100-inch screen. Even low-quality materials can gain a second life – the image becomes sharper, more readable, and overall much more pleasant to view. A weak point remains overscan, or slight trimming of edges in very low resolutions (e.g., 576p), which has been a longstanding issue for Samsung. Fortunately, in everyday viewing of HD and 4K content, this practically doesn’t matter anymore.

TCL C6K features a 144 Hz panel, which is a significant advantage in this price range. This is an important step forward compared to the previous model C655 PRO, which offered only 60 Hz at 4K. The difference is especially noticeable when watching sports or playing games – the ball, athletes, or fast action in a game are displayed more clearly and without losing details. An interesting fact is also the ability of the panel to operate at 240 Hz, which the manufacturer does not mention in official materials. We will return to this topic when discussing the game mode for PC.

TCL also added a feature for movie watchers: "Motion Clarity," which allows you to adjust the image to your preferences using two simple sliders. You can keep the movie frame visible or opt for a very smooth, almost theatrical effect. This way, everyone can find settings tailored to their taste.

The QN80F features a 144 Hz panel, and this is evident in practice – with full refresh, the image is exceptionally smooth, and motion blur remains at an acceptable, barely noticeable level. However, this mode is mainly aimed at PC gamers. The most important reference point in everyday use remains a 120 Hz refresh rate, and here a certain discrepancy arises. During the UFO test, we noticed the blurring of contours of quickly moving objects – it looked as if the television had the BFI (Black Frame Insertion) function permanently enabled, which in practice led to an unpleasant double edge effect. We do not yet know if this is a software issue or a characteristic of this model, but in its current form, it is difficult to praise such behavior.

The TCL C6K is a TV that can confidently be called equipment designed for gamers. Here we have 4K at 144 Hz, VRR support, automatic game mode (ALLM), and Dolby Vision Gaming. Additionally, there's a practical Game Bar, a panel with the most important settings readily available – useful when we want to quickly change something during gameplay (e.g., screen aspect ratio: Yes, that’s possible!). The wide VRR range, reaching up to 240 Hz, deserves attention. However, this is mainly an option for PC gamers who drop below the native 4K resolution. Then the TV can spread its wings and show additional smoothness, especially in fast-paced e-sports titles. In the case of consoles, we stick to the classic limit of 120 Hz, but the possibilities are still quite broad. The only drawback is a slight ghosting that can sometimes be seen in dynamic scenes. Other than that, the C6K offers everything gamers expect from a TV.

The Samsung QN80F gives the impression of a television designed for gamers. On the list of advantages, it features a 144 Hz panel, four full-fledged HDMI 2.1 ports, full support for VRR and ALLM, and one of the best-designed game bars on the market. Additionally, there is the Game Motion Plus motion smoothing, which works even in games without actually increasing input lag, making the QN80F an absolute phenomenon in this category. In practice, this means you can enjoy smoother visuals without sacrificing responsiveness, which is a dream for many console gamers!

As usual with Samsung, Dolby Vision is missing in games, and this is no longer surprising. What surprised us much more, however, is that in the 2025 models… the HGIG feature has disappeared. It was the feature that allowed consoles like the PlayStation 5 and Xbox Series X to perfectly match HDR tone mapping to the capabilities of the television. In the current firmware of the QN80F, this option simply doesn’t exist – it looks more like a bug than a conscious decision by the manufacturer, but as of the test day, it must be noted that HGIG is unavailable. Because of this one omission, the QN80F goes from being almost the perfect television for gamers to just "almost" perfect. This is quite a pity, as Samsung has created a model that truly raises the bar in gaming hardware.