Samsung QN80F 100" vs TCL C69K / Q6C

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.

In terms of brightness, TCL C69K / Q6C is a moderate model. Under optimal movie conditions, it shows its full potential, reaching a maximum of around 600 nits. In scenes with large, intense light sources, the HDR effect can be truly satisfying, providing a cinematic sparkle. However, it should be noted that when managing the backlight zones, there are situations where some elements of the image become dimmed, and sometimes they are barely visible. This suggests that there is still a lack of proper optimization of algorithms, though considering the technical parameters in this price range, the construction still looks very good.

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.

The Filmmaker mode, which has arrived in this year's TCL televisions (including the C69K / Q6C), is definitely the best choice "to start with." This is the mode we recommend for everyday viewing of movies and series. Unfortunately, as is often the case, best does not mean perfect. In SDR content, the image turned out to be too warm, with a strong red tint in the white balance. We had the opposite impression with HDR content – here the image became cooler than it should have, due to an excess of blue color. Additionally, the brightness characteristics sometimes resulted in overexposure. In practice, this translated to quite noticeable errors in color tests, which is hard to accept in a mode labeled as “by the creators.”

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.

Through white balance adjustment, we were able to significantly reduce the tendency of C69K / Q6C to distort colors, which resulted in a very good final outcome. After calibration, the issue of excessive warmth in SDR scenes and overly cool images in HDR disappeared. However, it is worth closely analyzing brightness characteristics. While there are few complaints about SDR content - the image looks really good, especially in older movies, TV programs, or on YouTube - the situation is much worse with HDR content. Analysis of the EOTF curve suggests that everything is fine, but in practice (EOTF in films), the limitations of the design become apparent. This model tends to excessively brighten small parts of the frame, while in other situations it dims the entire scene too much. The effect of calibration is undeniable, and in terms of color accuracy, C69K / Q6C gains a lot. Unfortunately, certain limitations resulting from local dimming management simply cannot be overcome.

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.

In terms of image scaling, TCL C69K / Q6C performs quite well. Lower quality content is displayed acceptably, and thanks to the lack of overscan issues, the image is presented in full without any cropping. However, one shouldn't expect miracles – very low-quality materials won't gain a new life here, as the image processor has its limitations.

On thin lines and details, one can see characteristic jitter, indicating a lack of more advanced image enhancement algorithms. It's also a pity that the C69K / Q6C lacks the function for smoothing tonal transitions. As a result, in older movies or video materials, color banding can be noticeable and may become distracting during longer viewing sessions.

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 use of a 144 Hz panel in TCL C69K / Q6C is a significant advantage in this price range. It represents an important step forward compared to its predecessor (C655 PRO), which only offered 60 Hz at 4K. The difference is particularly noticeable when watching sports or playing games – the ball, players, or dynamic action in games are displayed more clearly and without losing details. An interesting feature is also the ability of the panel to operate at 240 Hz (which the manufacturer does not officially mention) – we will return to this topic in relation to the PC gaming mode. TCL has also added a feature for movie fans: “Motion Clarity.” This allows users to adjust the picture to their preferences using two simple sliders. We can either keep the visible film frame or opt for very smooth, "

Samsung QN80F gives the impression of a television designed with gamers in mind. On the list of advantages, we have a 144 Hz panel, four full HDMI 2.1 ports, complete support for VRR and ALLM, and one of the best-designed game bars on the market. In addition, there's the Game Motion Plus motion smoother, which works in games without actually increasing input lag, making the QN80F an absolute standout in this category. In practice, this means that you can enjoy a smoother picture without losing responsiveness, which is a dream for many console gamers!

As usual with Samsung, there’s a lack of Dolby Vision in games, and that's not surprising anymore. However, what surprised us much more is that in the 2025 models… the HGIG feature has disappeared. It was the feature that allowed consoles like PlayStation 5 or Xbox Series X to perfectly match HDR tone mapping to the capabilities of the television. In the current firmware of the QN80F, this option is simply not available—it seems more like a mistake than a conscious decision by the manufacturer, but on the day of testing, we have to acknowledge that HGIG is not available. Because of this one missing feature, the QN80F goes from being an almost perfect television for gamers to an "almost" perfect device. It's quite a shame because aside from this, Samsung has created a model that really sets the bar high in the gaming hardware segment.

[UPDATE] We have updated our tests of Samsung televisions from the 2025 lineup due to the release of software version 1131, which restored the crucial feature HGiG for gamers.

TCL C69K / Q6C is a television that can boldly be called equipment created with gamers in mind. Here we have 4K at 144 Hz, VRR support, automatic game mode (ALLM), and Dolby Vision Gaming. Additionally, there's a practical Game Bar, which is a panel with the most important settings right at hand – useful when we want to quickly change something during gameplay (e.g., aspect ratio: Yes, it’s possible!). The wide range of VRR, reaching up to 240 Hz, is noteworthy. This option is primarily for PC gamers who will lower the resolution below native 4K. In that case, the TV can spread its wings and show additional smoothness, especially in fast esports titles. For consoles, we stick to the classic limit of 120 Hz, but the possibilities are still quite broad. The only drawback is slight motion blur that can sometimes be seen in dynamic scenes. Other than that, C69K / Q6C offers everything gamers expect from a television.