TCL C855 vs Samsung QN80F 100"

TCL C855 delivers a highly varied HDR effect. On one hand, the television truly shines, while on the other, it resembles a lower model with FALD backlighting. Such a state of affairs is regularly observed with this brand, so it was not a surprise for us. The first and last scene, which has large light elements, looks phenomenal, "shining" with brightness levels of 1470 and 1820 nits respectively. Such effects will certainly make many people squint, while simultaneously feeling the extraordinary dynamism of the scene itself. You can truly feel as if you were inside the movie. The situation drastically changes when small or minor elements with high luminance surrounded by black appear on the screen. The TCL C855, to avoid the halo effect, significantly reduces brightness to a level of even 240 nits, which is a disappointing outcome, causing the film to not look like it was shot in HDR. The HDR effect in TCL C855 makes watching dynamic scenes more engaging, and the viewer can feel like they are part of the action. Even with smaller elements of high luminance, the television manages to maintain details without excessive dimming. Moreover, the TCL C855 test shows that the brightness of the image is adapted to scenes with a large amount of detail, increasing viewing comfort.

When it comes to HDR in Filmmaker mode, the QN80F can make a great first impression. Our lab tests showed that under the best conditions, the TV can achieve brightness exceeding 1200–1300 nits. These are truly remarkable results that make HDR effects in many films look incredible. The TV is simply bright enough that it doesn't have to artificially adapt the image – the bright parts of the scene 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 film scenes, brightness typically hovers around 700–1100 nits. These are still excellent values that, in most cases, provide a strong sense of realism and make the lights on the screen truly blinding. The problem arises in exceptionally difficult sequences, where, like almost every mini-LED, it reveals its limitations. A good example is Sicario 2: scenes with the helicopter in the night sky look much weaker, and the lights lose intensity, dropping to around 370 nits, making it hard to speak of serious awe. Additionally, there's the issue of colours. Although we are dealing with a QLED, the coverage of the DCI-P3 colour gamut is about 90%. This is a rather average result for a quantum dot TV. In practice, this means that some colours may appear less saturated than we would expect, especially in demanding HDR productions.

The best factory mode for the TCL C855 is "Film," and it is on this mode that we conducted all our tests. However, like every mode predefined by the manufacturer, it had flaws that are worth correcting to achieve an image that is as close as possible to what the film producer intended. We will look at the colour characteristics in both SDR and HDR materials. Taking the former into account, we see a clear dominance of green in the white balance, which, as you might guess, gave an unpleasant greenish tint to the entire image. Examining a very important gamma chart, responsible for the contrast of the image, we see a significant deviation from the reference line marked at 2.4. From the left, we can observe a strong spike in the measured value, which at this point caused contrast exaggeration and blending of details into a dark blob. This state of affairs persisted for quite a while, up to 20% of the chart’s value, before then diving below the reference. This, in turn, meant that the image was brightened and contrast decreased significantly. The factory mode performed somewhat better in HDR materials, as the white balance looked quite good, except for the second half, where green again took over. Looking at the EOTF curve, which, unlike gamma, shows the rate of brightness increase, we see primarily two errors: the darkest scenes were too dark, and the brightest ones were overexposed. This, by the way, could be observed in the scene from the film "Pan" in the check paragraph for the TV's HDR.

Samsung QN80F performs best in Filmmaker mode, which is designed to faithfully reproduce the creators' intentions. And indeed – this is the mode where the TV shows its potential. But let's not fool ourselves, it’s far from perfect. In SDR content, a significant issue emerged with white balance. 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 subtly shifted colour palette could be quite noticeable, and in colour checker tests, the colours nearly "jumped" outside their reference fields. With HDR content, the situation looked 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 impression of contrast, and in dynamic scenes, it led to a slight "flicker" in perception. We've actually mentioned this before in the sections about black levels and HDR. The good news, however, is that Samsung provides plenty of tools for improvement. The QN80F allows for very detailed calibration, including a 20-point white balance. And since the manufacturer has left us with so many options, we decided to see how the TV would perform after a solid correction.

TCL, just like the vast majority of manufacturers, provides advanced calibration tools in its televisions. Here we find 2- and 20-point grey scale adjustments as well as an advanced colour management system. The results, as you can see, are very good and in SDR materials we have significantly approached the reference image. We eliminated both the green tint and the gamma issue, although there is still a slight "kink" at the very beginning. It went a bit worse with HDR materials, which the television ChooseTV C855 did not allow us to model properly. We only managed to slightly adjust the EOTF curve and significantly improve the colours themselves.

After calibrating the QN80F, it immediately showed that it has much more to offer. The pink hue that used to spoil the viewing experience has disappeared, and the white balance finally looks as it should – natural and without excessive deviations. The colours have gained depth, and the image has become more saturated and coherent, making movies simply more enjoyable to watch. It's a bit like taking a light mist off the screen – suddenly everything appears sharper and clearer. Brightness management has also improved. The TV no longer gets lost so easily in dynamic changes, and the EOTF graph shows that the curve tracking is significantly more stable. Of course, there are no miracles – the limited number of zones still means that small, bright elements can be slightly washed out, but that's just a result of the design rather than the settings. After this adjustment, the QN80F feels like a more mature piece of equipment, and watching movies finally provides the satisfaction expected from even a higher-end television.

Once again, we will look at the function of smoothing tonal transitions, but this time also image scaling. The latter is particularly important when watching materials of lower quality, such as some TV programs or older films. We will focus on the function responsible for tonal transitions. Interestingly, just like in the scenes in the previous test, it performed splendidly and smoothed out practically all the choppiness, but here it had problems. Using the menu responsible for the operation of this function, we found that none - not even the strongest - setting helped.

The image scaling in TCL C855 is characterised as one of the best we have had the opportunity to test so far. The image is sharp, but in a way that could be described as natural to our eye. Even small, fine branches do not have jagged contours, and there is no white halo around figures, which is characteristic of weaker scaling systems.

With lower quality materials, such as YouTube videos or older television recordings, the QN80F can show both its strengths and weaknesses. If strange colour transitions or artefacts start to appear on the screen, it's worth reaching for the noise reduction feature. The best setting is at the "medium" level – it smooths out problematic segments while not blurring the entire image. However, one compromise must be kept in mind: this feature always removes film grain. If someone enjoys its presence in older productions, it's better to leave the reduction off, as regardless of the setting, the grain simply disappears.

Resolution scaling, or upscaling, is another strong point for Samsung. The QN80F may not be the best television on the market, but it performs very well in its price class, which is crucial 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, which is slight cropping of edges in very low resolutions (e.g., 576p), something that has been a longstanding issue for Samsung. Fortunately, in everyday viewing of HD and 4K content, this is practically of no significance anymore.

The maximum refresh rate that we can set on TCL C855 is 144 Hz. Naturally, this is only possible when connecting the TCL C855 TV to a very powerful PC. Otherwise, we will operate at a maximum refresh rate of 120 Hz, which is recommended if we primarily want to watch sports or content with a high level of motion dynamics. For those who require high fluidity of image, the manufacturer has implemented a multi-level motion smoother. It has been divided into two separate sliders that adjust the sharpness of moving images (Blur Reduction) and judder (Judder Reduction). Both sliders can be set in the range of 0 to 10, with each level affecting the degree of smoothing, so everyone can find their sweet spot. We present a setting that allows for slight smoothness without the soap opera effect.

The panel of TCL C855 features a very good response time. This is especially important, as VA panels often have issues with so-called ghosting, which is the effect where a black halo can be noticed behind a fast-moving object.

QN80F features a 144 Hz panel, and this is evident in practice – with full refresh, the image is incredibly smooth, and motion blur remains at an acceptable, barely noticeable level. However, this mode is mainly aimed at PC gamers. The most important point of reference in everyday use remains the 120 Hz refresh rate, and here a certain crunch arises. During the UFO test, we noticed ghosting of rapidly moving objects – it looked as if the television had the BFI (Black Frame Insertion) feature permanently enabled, which in practice led to an unpleasant effect of double edges. We still don't know if this is a software issue or a peculiarity of this model, but in its current state, it's hard to commend such behaviour.

The TCL C855 television is equipped with full HDMI 2.1 ports with a bandwidth of 48 Gb/s. During our tests, we confirmed the seamless operation of all functions that come with this standard. As you can see, all the checkboxes light up green, which will certainly be appreciated by gamers, both console and those using the television as a computer monitor. Additionally, the TCL C855 supports both AMD FreeSync and NVIDIA's G-Sync, which can be easily activated in the graphics card settings. Users with very powerful setups can provide a 144 Hz signal to the C855, which the television handles effortlessly. It's also worth mentioning the implementation of the HGIG mode, which, due to the shortcomings of the "Game" mode, is overly bright, making it difficult to configure properly on-screen. Fortunately, the television performs excellently with the Dolby Vision format.

The TCL C855, as one of the first manufacturers, has equipped its televisions with a special GameBar feature that allows extensive setting changes on the fly, without the need to exit the game. It includes functions such as an additional crosshair grid, black level correction, and settings for individuals with disabilities. In the photo, we see the next generation of this solution.

In summary, the TCL C855 television will be an ideal solution for those looking for a screen for any kind of electronic gaming. With all the features supporting such entertainment, it is incredibly engaging. It should also be emphasized that it has very low input lag, regardless of the selected settings, including with the Dolby Vision HDR format.

The Samsung QN80F feels like a TV made with gamers in mind. On the list of advantages, we have a 144 Hz display, four fully-fledged HDMI 2.1 ports, complete support for VRR and ALLM, and one of the best-designed game bars on the market. Added to this is the Game Motion Plus motion smoother, which also works in games without actually increasing input lag, making the QN80F a true standout in this category. In practice, this means you can enjoy smoother visuals without losing responsiveness, which is a dream for any console gamer!

As usual with Samsung, there’s a lack of Dolby Vision in games, and this is no longer surprising. What surprised us much more, however, is that in the models from 2025… the HGIG feature has disappeared. It was this feature that allowed consoles like the PlayStation 5 and Xbox Series X to perfectly match HDR tone mapping to the TV's capabilities. In the current firmware of the QN80F, this option is simply missing – it looks more like a mistake than a conscious decision by the manufacturer, but as of the test day, we have to acknowledge that HGIG is not available. Because of this single omission, the QN80F goes from being an almost perfect gaming TV to just “almost” perfect. It’s a significant shame because, apart from this, Samsung has created a model that truly raises the bar in the gaming equipment segment.

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