TCL C655 / C69B 98' vs Samsung QN990F

The quality of HDR effect on the TCL C655 / C69B looks quite promising. The average value in the test charts is around 450 nits, which already allows for a hint of the brilliance of light effects and better image dynamics. However, as previously mentioned, this effect can be somewhat subdued by slight differences in bright and dark colours, resulting from the lack of local dimming technology. Nevertheless, the DCI-P3 colour gamut coverage of 94% deserves high praise, and this is made possible by the use of a quantum dot (QLED) panel. As a result, colours are vibrant and well-rendered when watching HDR content.

The Samsung QN990F belongs to the bright televisions category, and this is immediately evident in tests. In measurements, it achieved around 1300 nits, which in practice allows for enjoying films as their creators intended. Bright scenes have the right intensity, lights shine, and the experience is truly cinematic. In standard test patterns, sequences number 1, 3, and 5 performed best – there, brightness maintained around 800-1000 nits, and the image looked very natural. In more challenging segments, it could drop to around 600 nits, but even so, the level remained sufficient for details to be clearly visible. However, it should be added that in highly contrasting shots, the halo effect returns – the same one we mentioned regarding black levels. Bright elements can leave a halo on dark backgrounds, and this stands out immediately. Since we are dealing with a QLED, the colour palette is expanded, and the colours appear striking. The problem is that with such a flagship model, we expected better numbers. 91% DCI-P3 coverage and about 67% BT.2020 are results that can be considered solid, but not outstanding. This gives a vibrant and appealing image, yet the competition in this and lower price tiers can showcase even more.

The TCL C655 / C69B television offers a film mode that has been tested for colour reproduction quality. Although this mode is called film mode, unfortunately, it has many errors that the director would certainly not want to see when recording their work. Starting with image analysis, it's worth examining the white balance – both in HD and 4K HDR content, the white balance has significant errors. In both cases, the red colour dominates, making the colours too warm, and the overall image takes on a pink or yellow tint. The Colour Checker test confirms these errors – the colour samples stray into incorrect shades, affecting the overall colour fidelity. A minor issue is the brightness characteristics. However, this too is not without flaws. The gamma graph shows a strong spike at the beginning, which can cause the image to be excessively brightened, and the EOTF curve responsible for brightness in 4K HDR materials also has significant variations – it is evident how the television tries to maintain the appropriate brightness, but it does not always manage to do so effectively.

We tested the QN990F in Filmmaker mode, which is the best available right out of the box. Right from the start, we noticed several significant errors. The biggest issue concerned white balance. Due to too little blue, and also improper ratios between red and blue, the image – especially in scenes with a lot of white – appeared too yellow, and at times even orange. On the Color Checker palette, these errors didn't look dramatic as they hovered around a value of 4, but in everyday viewing, especially with strong whites, they were most noticeable. We also observed issues with brightness management – the television struggled to maintain detail in the smallest parts of the image, mainly due to the way it controls the backlighting zones. Fortunately, Samsung offers a lot of room for adjustment when it comes to calibration settings. We know that with the right calibration, much more can be extracted from this screen.

After calibrating the television's movie mode TCL C655 / C69B , the white balance has been adjusted, and the colours are displayed as they should be – which is confirmed only by slight deviations in the Colour Checker test. The gamma is really correct, which means the television shouldn't have problems with brightness in low-resolution materials. Unfortunately, a similar EOTF characteristic is still visible, which is a natural phenomenon in televisions that do not have local dimming – they simply struggle to "shine" stronger in a given section of the screen. Despite this design limitation, which cannot be bypassed, we recommend adjustment in the settings, as the overall coloration looks really very good.

After completing the calibration, we managed to bring the white balance back to order and eliminate the previous shortcomings in the shades of blue. As a result, the image no longer looked as if it had a slightly yellowish filter applied – the whites are purer, and the overall presentation is much more natural. We also managed, to some extent, to tame the brightness characteristics in HDR content. The television now handles detail retention in blacks significantly better and does not lose them to the same degree as before. However, when we look at the EOTF curve and the way the QN990F reproduces brightness in films, it is evident that it still tends to accentuate details in dark areas more strongly. This is a characteristic feature of Mini-LED technology and, more specifically, the way it is managed by the QN990F, which is practically impossible to completely eliminate. Despite this, after calibration, the image appears much more natural, mainly due to the correct exposure of white light. The final effect is definitely more pleasant to perceive and closer to what we expect from a flagship television.

The TCL C655 / C69B television handles tonal transitions in lower quality materials well. The "Gradual Smoothing" function, at its lowest setting, effectively eliminates visible banding, but at the same time causes a loss of detail, for example, in the texture of objects. The advantage is that it does not interfere with film grain, allowing the image to maintain a natural appearance.

In terms of digital processing, the television adds a considerable amount of artificial sharpness, which may appeal to those who prefer a crisp image. For those who favour a more subtle representation of details, this could be a downside. Another drawback is the rather aggressive overscan – the image gets cropped, leading to the loss of portions at the edges and limiting the field of view.

The biggest praise for the QN990F should be given for its upscaling. The processor responsible for "lifting" classic television to 8K resolution does quite well. While watching material in 576p signal, we had no illusions that we would suddenly see a miracle in advertising style, where the image magically transforms into crystal-clear 8K. Nevertheless, the end result was surprisingly good; the image looked clean and sharp. It’s just a shame that the television, like most Samsung models, has an overscan issue, slightly cropping the edges of the screen from the left side.

When it comes to image processing, Samsung offers a feature called "noise reduction," which in theory should improve tonal transitions in older materials, where they are usually more visible. Unfortunately, we felt quite disappointed here. The feature performs poorly – it does not handle unwanted stripes and can introduce its own artifacts. On the plus side, the television does not remove film grain when using this feature, but in practice, that is a poor consolation since the noise reduction itself proves to be virtually useless.

Unlike smaller versions, the 98” model stands out with significantly better motion fluidity. Instead of the standard 60 Hz, this colossal screen is equipped with a full-fledged 144 Hz matrix, which opens up entirely new possibilities – both for gamers and movie lovers. Thanks to the full motion smoother, the television provides incredible image fluidity, eliminating motion blur and enhancing the viewing comfort of dynamic scenes. It is worth noting that this technology works across the full refresh range, meaning that there is no need to compromise between fluidity and quality. Additionally, the "Flicker Reduction" function allows you to adjust the fluidity to your own preferences – you can opt for a more cinematic effect with visible frames or an extremely smooth image.

QN990F can comfortably be called one of the fastest televisions in the world. In 4K mode, it is capable of displaying images at a frequency of up to 240 Hz, which until now has been more associated with gaming monitors than with televisions in the living room. However, in everyday viewing, what matters more is how it handles the 8K signal at 120 Hz – and here it performs very well too. Motion remains smooth, and the television manages without a hitch even with the most demanding content. Additionally, there is the motion smoother, i.e. "Picture Clarity". Thanks to it, one can adjust the image to their own preferences – leaving a slightly cinematic judder or switching to maximum fluidity, which works exceptionally well, for example, in sports broadcasts.

The 98-inch TCL C655 / C69B is excellently equipped for gamers. Full HDMI 2.1 ports and a 144 Hz panel allow for gaming in 4K at 120 Hz, providing fluidity and responsiveness that will impress even the most demanding.

The television supports Variable Refresh Rate (VRR), eliminating screen tearing, while the Automatic Low Latency Mode (ALLM) ensures that the game starts immediately without the need for manually switching settings. There is also support for Dolby Vision and HGiG, making the image quality in games even better – details are sharp, colours are natural, and contrast is perfectly balanced.

Additionally, the television offers a dedicated gaming panel that allows for quick adjustment of picture settings without the need to exit the game. It is a device that meets virtually all the requirements of a modern gamer.

It must be said outright – the QN990F is one of those televisions that practically scream that they were designed with gamers in mind. Samsung has been developing its gaming solutions for years, but here we have a truly comprehensive set. Sure, it lacks Dolby Vision support in games, which is a downside that will always come up in discussions. However, aside from that, the list of features is impressively extensive. To begin with, we have the Game Bar – a handy menu that allows you to quickly check and change gaming-related settings. You can see, for example, the enabled VRR, frame rate, or aspect ratio settings. It’s like a little “dashboard,” making it unnecessary to dig deep into the menu to make adjustments. Speaking of VRR: yes, variable refresh rate is present here and works flawlessly. And there's ALLM, which automatically switches the television to game mode as soon as the console is powered on. These may seem like small details, but together they make using the QN990F simply comfortable and hassle-free.

However, the most impressive aspect is the number of ports. Four wireless HDMI 2.1 ports are already great news, as there is no need to choose whether to connect the console, the amplifier, or perhaps even a PC. There’s ample space for everything here. And if we add another micro HDMI (which we recommend connecting directly to the console), hidden in the casing, we practically have five inputs in full 2.1 standard. Let’s also add support for high refresh rates – 120 Hz at 8K and even 240 Hz at 4K – and we get a television that not only keeps up with the new consoles but also feels ready for consoles that are not yet available.