SAMSUNG QN80F vs TCL C69K / Q6C

QN80F is quite a bright screen – in synthetic tests, it achieved nearly 1000 nits, which allows for reasonable expectations with HDR content. And indeed, in many scenes, the television truly shines. Sequences with a lot of light – such as shots from the movie Life of Pi or wide, bright surfaces in The Meg – look spectacular. Brightness maintains around 700 nits, which provides a solid effect, sufficient to feel the true "HDR magic." Unfortunately, not every scene looks that good. In materials with small, bright details on a dark background, like in Sicario 2, the television has problems – it can dim certain elements significantly, sometimes to the point where they disappear from the image. This is the result of a limited number of dimming zones, which forces the device to make compromises: either stick to inky blacks or sacrifice some details. QN80F usually chooses the former. As a consolation, it has quite decent coverage of a wide color gamut – DCI-P3 at 93%. This is not the highest score on the market, but it is more than enough for most content on streaming platforms.

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.

We always test televisions in the best available factory mode – for the Samsung QN80F, this is the Filmmaker mode, and indeed, it offers the settings closest to the creators' intentions. However, this doesn't mean that everything looks perfect. In SDR content, the biggest issue turned out to be an unbalanced white balance – slight deficiencies in green and a noticeable excess of red led to noticeable color errors, and one could almost say there was a pinkish tint to the screen. This was clearly visible in the color checker test, where colors would "escape" their target fields – to the extent that a sensitive viewer's eye could catch it even without the help of a meter.

In HDR content, the white balance was much better, but another problem emerged – brightness management. The EOTF curve caused an overly bright image most of the time, which could affect the perception of contrast and made the screen slightly "flicker" during dynamic light changes. We have already discussed this in the paragraphs about black and HDR. Fortunately, Samsung leaves the user with plenty of options. The QN80F offers a rich set of calibration options, including a 20-point white balance – that's why we decided to check what this television is really capable of after proper calibration.

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 conducting a thorough calibration, it was possible to bring most image parameters to a really good level. The white balance in both SDR and HDR appears nearly perfect – the image is natural, neutral, and free of the previously noticeable reddening. The colors have gained depth, and the overall visual reception has become more pleasant and cohesive. It was also possible to partially master brightness management, which in the factory version could be problematic. The EOTF chart shows that the television performs significantly better with brightness after calibration – there's no longer excessive dimming of certain elements. In films, it can still be observed that the QN80F has a tendency to slightly brighten the smallest, bright details – this is already a result of the device's construction and the limited number of dimming zones. In short: not everything can be overcome, but what could be improved has been addressed. After calibration, the QN80F makes a really good impression; it simply looks more mature and professional.

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.

If, while watching lower-quality materials – for example from YouTube – we notice strange color transitions or unwanted artifacts, it’s worth checking the settings and enabling the noise reduction function. In our opinion, the best setting is at the "medium" level – it effectively smooths out problematic color transitions while not excessively blurring the entire image. However, one must know this: this option tends to remove film grain. If someone cares about preserving this effect (e.g., in older films), it’s better to just turn it off – regardless of the level, the grain always disappears.

When it comes to scaling resolution (i.e., the so-called upscaling), Samsung – as always – performs very well in this area. The QN80F may not compare to the top models worth several thousand, but for its price class, it really performs impressively. Very low-quality materials (e.g., from SD television or older video files) are noticeably improved and look surprisingly decent. The only noticeable drawback is the typical Samsung issue with overscan – that is, slightly cropping the edges of the image at very low resolutions, e.g., 576p.

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.

QN80F is truly a "fast" television. The applied panel offers a refresh rate of up to 144 Hz, which in practice means that the screen keeps up with the action – whether we're watching a movie, playing games, or browsing dynamic content on the internet. The image doesn't tear, it doesn't excessively blur, and everything simply looks smooth and pleasant to the eye. Of course, the manufacturer hasn't forgotten about movie fans – in the settings, we find an option for motion smoothness adjustment, allowing us to tailor the effect to our personal preferences. You can leave a more "cinematic" look (for those who enjoy a classic film vibe) or crank up the smoothness to a higher level for a theatrical smoothing effect. Importantly, the choice is ours. Watching movies and playing on the QN80F is simply a joy.

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, "

The Samsung QN80F is a television that delivers on almost every front when it comes to gaming. It features a 144 Hz panel, four full-fledged HDMI 2.1 ports, support for gamers in the form of variable refresh rate (VRR), automatic low latency mode (ALLM), and even one of the best-designed game bars on the market. The cherry on top is the motion smoother, which – uniquely in the world – works in games without significantly increasing input lag. Sounds like an almost perfect TV for gamers? And indeed, it is almost that way.

[UPDATE] We have updated our reviews of Samsung TVs from 2025 due to the release of software version 1131, which restored the crucial gaming feature HGiG.

As usual, Samsung does not support Dolby Vision in games, but that no longer surprises anyone. However, what is much more surprising is that... the HGIG feature has disappeared – that is, the system that allows a console (e.g., PlayStation 5 or Xbox Series X) to precisely match HDR tone mapping to the capabilities of the TV. In the latest firmware update for the 2025 models, this option simply vanished. It seems more like a bug than a deliberate move, but it must be honestly noted that as of the day of writing the review, the HGIG feature is simply not present.

And it is precisely because of this one absence that the QN80F turns from an almost perfect gaming TV into a "nearly" perfect device. It's a shame – because everything else indicated that Samsung could set the bar very high again in this generation.

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.