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. 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 image dynamics and brightness, the QNED80A firmly stands its ground. It is not a “bright beast” – during our measurements, peak luminance oscillated between 350-400 nits. To put it plainly: these values won't allow HDR formats to fully spread their wings. So, do not expect that the glare of the sun or car headlights in films will blind you. However, this television has a powerful ace up its sleeve that salvages the overall picture impression – and that is the colours. LG's engineers have employed an advanced filtration system (technically most likely based on PFS phosphor, marketed as QNED/NanoCell), which does a fantastic job. Thanks to this, despite average brightness, the screen is capable of generating exceptionally saturated and pure hues. Our instruments showed coverage of the wide DCI-P3 cinema colour palette at a level of 93-94%. This is a result that outclasses most standard LCD televisions. In practice, this means that when watching 4K HDR content, the picture – although not very bright – is very plastic, vivid, 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. 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.

Here, regardless of whether you encounter the VA or IPS version, the situation is identical. LG engineers once again served us their vision of a "gaming look," which unfortunately has little to do with accuracy. When switched to console mode, the white balance automatically drifts towards very cold regions. The image is dominated by the colour blue, which makes it seem artificially sharpened, and the white is so aggressive that it appears burnt out. This creates an effect we associate with vibrant shop modes – everything is meant to shine and scream "I am digital." While some may appreciate this, we must say plainly: the image is not accurate. If you care about naturalness, we suggest you immediately check the settings and change the colour temperature to a warmer one.

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 professional calibration, the QNED80A in the IPS version has changed unrecognisably, 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 dropped below the threshold of perception (value < 2). The picture 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 television has a problem with perfectly controlling the brightness (EOTF curve). Due to the limitations of edge lighting and the rather meagre adjustment options provided by LG in this respect, the television'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 picture after calibration is a class better than what you saw out of the box.

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.

It often happens that cheap 4K TVs mercilessly expose the flaws of low-resolution materials. Here, it is different. The QNED80A is great equipment for watching content that is not perfect. The processor does a good job of upscaling the image, making even older recordings look quite decent on a 4K screen – they are consistent and free of digital noise. Interestingly, there is a gradation reduction feature available in the settings. It is very effective in combating the so-called banding in low bitrate materials. Of course, it should be approached with some caution. Due to the lower processing power of the chip (compared to the premium series), turning on this option can sometimes result in unwanted artifacts or blurriness. Despite this risk, we encourage experimentation, as in many cases this feature can save a poor-quality viewing experience.

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.

In terms of motion reproduction, the QNED80A unfortunately has a tough time. The television is based on a display with a refresh rate of 60Hz, which is quite a disappointment for the QNED series in 2025. If you are looking for perfect sharpness during dynamic football matches, you may feel somewhat unsatisfied. A solution in this situation is the TruMotion system. It allows for artificial frame generation, which smooths out the image in films and series. In the menu, you will 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 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.

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 that must be accepted. However, LG's engineers have done everything possible to maximise the potential of this 60Hz panel, providing gamers with a set of desirable features. First and foremost, the television supports VRR (in the range of 48-60Hz) and ALLM. This means that the image is smooth, not choppy, and the television automatically switches to low-latency mode as soon as we pick up the controller. Accessing these options is incredibly simple 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. Although the screen does not support gaming Dolby Vision, HGiG ensures that the television 'understands' how to display games in HDR. As a result, we avoid the problem of blown-out clouds, which is unfortunately a plague on cheaper LCD televisions.