TCL C855 vs LG QNED80A6A (IPS)

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 image dynamics and brightness, the QNED80A keeps its feet firmly on the ground. It’s not a "light beast" – during our measurements, peak luminance hovered around 350-400 nits. To put it bluntly: these are values that won't fully unleash the potential of HDR formats. So don’t expect the glare of the sun or car headlights in films to blind you. However, this television has a powerful ace up its sleeve that saves the overall image quality – it's the colours. LG engineers have employed an advanced filtration system (technically based on phosphor PFS, marketed as QNED/NanoCell), which does a fantastic job. Thanks to this, despite average brightness, the screen can generate exceptionally saturated and pure colours. Our instruments showed coverage of the wide cinematic DCI-P3 colour gamut at around 93-94%. This is a result that outclasses most standard LCD televisions. In practice, this means that when watching 4K HDR content, the image – although not very bright – is very vivid, lively, and delights the eye with its depth of colours.

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.

Here, regardless of whether you come across the VA or IPS version, the situation looks identical. LG engineers have once again served us their vision of a "gaming look," which unfortunately has little to do with accuracy. When switching to a console, the white balance automatically shifts to very cold regions. The image is dominated by blue, making it seem artificially sharpened, and the white is so aggressive that it almost burns out. This creates an effect we associate with garish retail modes – everything is meant to shine and scream "I’m digital." While some may like this, we must say it bluntly: it is not an accurate image. If you care about naturalness, we suggest you immediately check the settings and change the colour temperature to a warmer one.

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 professional calibration, the QNED80A in the IPS version has changed beyond recognition, especially with "ordinary" content (SDR). We managed to eliminate the greenish tint and calm down the overly bright gamma. In classic television or older games, colour errors (DeltaE) have fallen below the threshold of perception (value < 2). The image is now coherent, natural, and truly pleasing to the eye. The situation is somewhat more complicated in HDR mode. Although the colours are now in place, the TV struggles with perfect brightness control (EOTF curve). Due to the limitations of edge lighting and the rather poor adjustment options provided by LG in this area, the TV's software at times "does what it wants" just to mask the imperfections of black and contrast. However, this is not a cause for concern – despite these technical limitations, the image after calibration is a class above what you saw out of the box.

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.

It often happens that cheap 4K TVs mercilessly expose the flaws of low-resolution materials. Here, it's different. The QNED80A is great equipment for watching content that isn’t perfect. The processor does a great job of scaling the image, making even older recordings look quite decent on the 4K screen – they are consistent and free of digital noise. Interestingly, there’s a gradation reduction feature available in the settings. It’s particularly effective in combating what is known as banding in low-bitrate materials. Of course, you need to approach it with some caution. Due to the lower processing power of the chip (in comparison to the premium series), turning on this option can sometimes result in unwanted artifacts or blurring. Despite this risk, we encourage experimentation, as in many cases this feature can save a viewing of low quality.

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.

When it comes to motion reproduction, the QNED80 unfortunately has a bit of a disadvantage. The TV is built on a 60Hz refresh rate panel, which is quite disappointing for the QNED series in 2025. If you're looking for perfect sharpness in dynamic football matches, you might feel a bit let down. The solution in this situation is the TruMotion system. It allows for artificially adding frames, which smooths out the picture in movies and TV shows. In the menu, you'll find a De-Judder slider – we recommend setting it to a value of 2, 3, or 4. This is the "golden mean" that improves fluidity without turning the film into a soap opera.

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.

In the gaming section, we won't be pulling the wool over your eyes – the QNED80A is not e-sports equipment. The lack of 120Hz signal support is a fact to accept. However, LG's engineers have done everything to squeeze the maximum potential out of this 60Hz panel, providing gamers with a desirable set of features. Above all, the TV supports VRR (in the range of 48-60Hz) and ALLM. This means the image is smooth and doesn't stutter, and the TV automatically switches to low latency mode as soon as you grab the controller. Accessing these options is ridiculously easy thanks to the dedicated system overlay – Game Dashboard. It's also worth appreciating the support for the HGiG format. This is a nod to owners of modern consoles. Even though the screen doesn't support gaming Dolby Vision, HGiG ensures that the TV "understands" how to display games in HDR. This helps avoid the effect of blown-out clouds, which is unfortunately a plague on cheaper LCD TVs.