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. This situation is, however, regularly observed in this brand, so it was not a surprise to us. The first and last scenes, featuring large elements of light, look almost phenomenal, "shining" with brightness levels of 1470 and 1820 nits respectively. Such effects will certainly cause more than one person to squint, while simultaneously feeling the extraordinary dynamism of the scene itself. You can truly feel as if you are inside the film. The situation changes dramatically when small or minor elements with high luminance surrounded by black appear on the screen. The TCL C855, in order to avoid the halo effect, significantly reduces brightness to a level of even 240 nits, which is a disappointing result, causing the film to not appear as if it was recorded in HDR. The HDR effect in the TCL C855 makes watching dynamic scenes more engaging, allowing the viewer to feel as though 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 adjusted for scenes with a large amount of detail, which enhances viewing comfort.

When it comes to HDR in Filmmaker mode, the QN80F can make a great first impression. Our laboratory tests have shown that under the best conditions, the television is capable of achieving brightness exceeding 1200–1300 nits. These are truly excellent results, making HDR effects in many films look incredible. The television is simply bright enough not to need to artificially adapt the image – the bright parts of scenes have the right 'power' and actually look like a light source. Of course, the laboratory is one thing, and everyday viewing is another. In practice, in film scenes, brightness generally oscillates in the range of 700–1100 nits. These are still great values that, in most cases, provide a strong sense of realism and make the lights on the screen truly capable of blinding. The problem arises in exceptionally challenging sequences, where, like almost every mini-LED, it reveals its limitations. A good example is Sicario 2: the 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 admiration. To this, we must add the issue of colours. Although we are dealing with a QLED, the coverage of the DCI-P3 colour palette is around 90%. This is a rather average result for a quantum dot television. 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. Like any mode predefined by the manufacturer, it had its drawbacks that are worth correcting to achieve an image as close as possible to what the film producer intended. We will examine the colour characteristics in both SDR and HDR materials. Looking at the first, we see a noticeable dominance of green in the white balance, which, as you might imagine, resulted in an unpleasant greenish tint across the entire image. Observing the very important gamma chart, which is responsible for the image's contrast, 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 the image to be overly contrasted, merging details into a dark blob. This situation persisted for quite some time, up to 20% of the chart's value, before then dipping below the reference. This, in turn, meant a brightening of the image and a significant drop in contrast. The factory mode performed slightly better in HDR materials, as the white balance looked quite good, except for the second half, where green once again took precedence. 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 was something we could also observe in the scene from the film "Pan" in the paragraph checking the TV's HDR.

The Samsung QN80F performs best in Filmmaker mode, which is designed to replicate the creators' intentions as accurately as possible. And indeed – this is the mode in which the television showcases its potential. But let’s not kid ourselves, it is far from perfect. In SDR content, the issue of white balance came to the forefront. Slightly lacking greens and a noticeable excess of reds caused the screen to take on a pinkish hue. You don't even need meters to notice this – in everyday viewing, the subtly shifted colour palette could be quite noticeable, and in colour checker tests, the colours would literally "pop" out of their reference fields. With HDR content, the situation looked a bit better, as the white balance was closer to ideal, but another problem arose – brightness management. The EOTF curve often caused the image to become too bright, which spoiled the sense of contrast, and in dynamic scenes, it led to a slight "flicker" in perception. We had already mentioned this when discussing black levels and HDR. The good news, however, is that Samsung provides a lot of tools for improvement. The QN80F allows for truly detailed calibration, including a 20-point white balance. And since the manufacturer has left us so many options, we decided to check how the television would perform after a thorough adjustment.

TCL, like the vast majority of manufacturers, provides advanced calibration tools in its televisions. Here we find 2- and 20-point adjustments for greyscale 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. The performance with HDR materials was somewhat poorer, as the TCL C855 did not allow us to model them adequately. We were only able to slightly adjust the EOTF curve and significantly improve the colours themselves.

After calibrating the QN80F, it immediately showed that it was capable of much more. The previous pinkish tint disappeared, and the white balance finally looks like it should – natural and without excessive deviations. The colours gained depth, and the image became more saturated and cohesive, making watching films simply more enjoyable. It's a bit like removing a light haze from the screen – suddenly everything appears sharper and clearer. The management of brightness has also improved. The television no longer gets easily lost in dynamic shifts, 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 a result of the design itself, not the settings. After this correction, the QN80F feels like a more mature piece of equipment, and watching films finally provides the satisfaction expected from a television even in a higher class.

Once again, we will take a look at the function of smoothing tonal transitions, but this time also at image scaling. The latter is particularly important when watching lower-quality materials, such as certain television programmes or older films. We will focus on the function responsible for tonal transitions. Interestingly, just like in the scenes of the previous test, it performed excellently and smoothed out practically all the inconsistencies; however, here it had problems. Using the menu responsible for this function, we found that no setting - even the strongest - was of any help.

Image scaling in TCL C855 is described 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 for our eyes. Even the small, fine branches do not have jagged edges, and there is no white halo around figures, which is characteristic of inferior scaling systems.

With lower quality materials, such as films from YouTube or older television recordings, the QN80F can display its strengths and weaknesses. If strange colour transitions or artefacts start to appear on the screen, it is worth using the noise reduction function. The best setting is at "medium" – it smooths out problematic sections while not blurring the entire image. However, one compromise must be remembered: this function always removes film grain. If someone enjoys its presence in older productions, it is better to keep the reduction turned off, as the grain simply disappears regardless of the setting.

Resolution scaling, or upscaling, is another strong point of Samsung. The QN80F may not be the best television on the market in this regard, but it performs very well in its price range, which is very important for such a large size as a 100-inch screen. Even lower quality materials can gain a second life – the image becomes sharper, more readable, and overall much more pleasant to perceive. A weak point remains overscan, which is the slight cropping of edges in very low resolutions (e.g., 576p), something that has been a longstanding issue for Samsung. Fortunately, this is practically of no consequence when watching HD and 4K content on a daily basis.

The maximum refresh rate we can set on the TCL C855 is 144 Hz. Naturally, this is only possible by connecting the TCL C855 television to a very powerful PC. Otherwise, we will be operating at a maximum refresh rate of 120 Hz, which is recommended if we primarily want to watch sports or content with a lot of motion dynamics. For those requiring high image fluidity, the manufacturer has implemented a multi-stage motion smoother. This has been divided into two separate sliders regulating the sharpness of moving images (Motion Blur Reduction) and flicker (Flicker Reduction). Both sliders can be set in the range from 0 to 10, with each increment affecting the level of smoothing, so everyone can find their sweet spot. We present a setting that allows for slight smoothing without the soap opera effect.

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

The QN80F features a 144 Hz panel, and this is evident in practice – with full refresh, the image is remarkably smooth, and motion blur remains at an acceptable, barely noticeable level. However, this mode is primarily aimed at PC gamers. The most important reference point in everyday use remains the 120 Hz refresh rate, and this is where a certain discrepancy arises. During the UFO test, we noticed a splitting of the contours of rapidly moving objects – it looked as if the television had the BFI (Black Frame Insertion) feature permanently activated, which in practice led to an unpleasant effect of double edges. We do not yet know whether this is a software issue or a characteristic of this model, but in its current form, such behaviour is hard to commend.

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

The TCL C855 is one of the first manufacturers to equip its televisions with a special GameBar, which allows for extensive setting changes on the fly, without the need to exit the game. It features functions such as an additional crosshair grid, black level correction, and settings for people with disabilities. In the picture, we can see the next generation of this solution.

In summary, the TCL C855 television will be an ideal solution for those seeking a screen for all sorts of electronic gaming. Thanks to all the features supporting such entertainment, it is incredibly engaging. It is also important to highlight the very low input lag, regardless of the selected settings, including with the HDR Dolby Vision format.

The 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-featured HDMI 2.1 ports, complete support for VRR and ALLM, as well as one of the best-designed gamebars 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 an absolute standout in this category. In practice, this means you can enjoy smoother images without losing responsiveness, which is a dream for many console gamers!

As is usual with Samsung, there is a lack of Dolby Vision in games, and this is no longer surprising. However, we were much more surprised that in the models from 2025… the HGIG feature has disappeared. This feature allowed consoles such as the PlayStation 5 and Xbox Series X to perfectly adjust HDR tone mapping to the capabilities of the television. In the current firmware of the QN80F, this option is simply missing – it seems more like a mistake than a conscious decision by the manufacturer, but on the day of testing, we must acknowledge that HGIG is not available. Due to this one absence, the QN80F, instead of being an almost ideal television for gamers, becomes a device that is only "almost" ideal. This is quite a shame because, aside from this, Samsung has created a model that truly sets a high standard in the gaming hardware segment.

[UPDATE] We have updated our Samsung television tests for the 2025 model year due to the release of software version 1131, which has restored the crucial gaming feature HGiG.