TCL C855 vs Hisense U7Q PRO

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.

U7Q PRO is truly a bright television. In synthetic tests, it achieved over 1500 nits, which is an outstanding result for this price range. Such brightness – at least in theory – allows for HDR content to be displayed as intended by the creators, even in more demanding scenes with strong lighting. In practice, it is often very good, but not always perfect. In bright scenes with large areas – like the test chart with intense sunlight from the movie "Pan" – the U7Q PRO makes a huge impression. It can almost dazzle with its brightness, which is definitely an advantage in the context of HDR content. Unfortunately, it doesn't always manage to maintain this when many small bright details appear on a dark background. In such moments, the local dimming algorithms choose to dim some bright elements to maintain good black levels – and the side effect is that some details simply disappear from the frame. This is a classic compromise in mini-LED televisions – and the U7Q PRO is no exception. However, with such a large number of dimming zones, one could have hoped for a slightly more mature algorithm responsible for their control. Fortunately, the overall perception of HDR content is decidedly positive. The U7Q PRO is not only bright but also colourful, thanks to the PFS LED (QLED) coating, the coverage of the DCI-P3 colour palette is at 95%, while BT.2020 is around 73%.

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.

We tested the U7Q PRO in the best possible picture mode offered by this model – Filmmaker Mode. And indeed, this mode performs the best in terms of colour reproduction. However, that doesn't mean it's perfect. In our test unit, both in SDR and HDR content, the image had a slightly cooler tone. The white balance was skewed towards blue, giving the overall impression of being a bit "colder". It may not be glaring, but it is definitely noticeable – especially on white backgrounds, which seemed slightly bluish rather than neutral. Additionally – as we mentioned earlier – the television has a tendency to slightly brighten and oversaturate the image, which is also confirmed by the gamma and EOTF graphs. All this together means that without calibration, the image can appear somewhat unnatural – too cool, with slightly exaggerated dynamics. Therefore, we decided to carry out our own calibration – and you can see its effects and graphs below.

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.

Thanks to the calibration, we managed to tame the white balance in SDR and HDR content. In the case of SDR materials, the effect is really very good – the image becomes neutral, cohesive, and simply pleasant to take in. Everything looks as it should.

HDR performs a bit worse. Although the white balance appears correct and the image overall gains in naturalness, unfortunately, the delta E errors remain noticeable. Why? Because Hisense does not give us full control over how the television manages brightness in HDR mode with the U7Q PRO model. This is where the limitation comes into play. When we look at the EOTF curve for HDR content, we can clearly see what we mentioned earlier – at the beginning of the graph, there is a distinct drop, meaning the television darkens the smallest areas more than it should. On the other hand – the brightest elements can sometimes be overly bright. As a result, some details get lost, others are too aggressive, and overall control over brightness does not always match what we are trying to achieve during calibration.

Does the image look better after calibration? Definitely yes, in terms of colour. But when it comes to managing brightness in HDR, we have to accept that the Hisense U7Q PRO will do it in its own way.

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.

If someone happens to come across older materials where the colour banding issue occurs – Hisense has a solution for that. In the U7Q PRO, we find a function called "Smooth and Gradient Image". Set to the "Medium" level, it works really well – removing most issues with gradation while not smoothing out the entire image, like blurring in Photoshop. 😉 Film grain remains, details do not disappear – this is exactly how it should work. Well done on the implementation!

As for upscaling weaker materials, it is simply good. It is not at the level of the most expensive televisions with advanced upscaling, but older content looks good. There is minor aliasing at very low resolutions, but this is completely normal and hard to avoid. On the plus side – even with the oldest materials, there is no overscan effect, the image is neither cropped nor artificially stretched.

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.

“Speed” – this word came up most often during our tests of the U7Q PRO. The television is equipped with a 165 Hz panel, which is impressive in itself – especially since we are talking about a model in the mid-range price category. Of course, PC gamers will benefit the most from its full capabilities, but even with everyday viewing, it's clear that this is a fast and efficient panel. Like most modern televisions, the U7Q PRO can also enhance the fluidity of films that were originally recorded at 24 frames. In the menu, we find a slider that allows us to adjust the effect to our own preferences – from a more cinematic look, with subtle motion, to stronger smoothing with the characteristic “telenovela effect.”

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 Hisense U7Q PRO is a television that seems almost designed with gamers in mind. It has practically everything one could expect from a gaming display: variable refresh rate (VRR), automatic low latency mode (ALLM), and as many as four HDMI 2.1b ports with full bandwidth of 48 Gb/s. Additionally, there is a clear and quite functional Game Bar, as well as a well-implemented Dolby Vision GAMING mode that works seamlessly with Xbox Series S and X consoles.

Sounds like perfection? Well, almost. Unfortunately, Hisense has still not implemented the HGiG feature, which means the system limitation of tone mapping on the television side. This means that when configuring HDR brightness on the console, we do it "by eye" or search for settings in online guides, as the display does not show the actual range of its brightness. It’s a pity – because HGiG indeed makes it easier to match the console to the television and helps avoid overexposure or overly dark scenes in HDR games.

Fortunately, the other features work very well. Input lag is low, responsiveness is excellent, and the handling of other functions is impeccable. And while not everything worked perfectly, the U7Q PRO can still be recommended to gamers without hesitation.