TCL C655 / C69B 98' vs Samsung QN990F

The quality of the HDR effect on TCL C655 / C69B looks quite promising. The average value in the test charts is around 450 nits, which already allows one to feel the brilliance of light effects and better image dynamics. However, as previously mentioned, this effect can be somewhat dampened by slight differences in bright and dark shades due to the lack of local dimming technology. However, the coverage of the DCI-P3 colour gamut at 94% is commendable, and this is possible thanks to the use of a quantum dot (QLED) panel. As a result, the colours are vivid and well-reproduced when watching HDR content.

Samsung QN990F is one of the bright televisions, and this is immediately apparent in tests. In measurements, it achieved around 1300 nits, which in practice allows you to enjoy films as their creators intended. Bright scenes have the right strength, lights shine, and the impression is truly cinematic. In standard test patterns, sequences number 1, 3, and 5 performed the best – there, brightness remained around 800-1000 nits, and the image looked very natural. In more difficult segments, it could dip to around 600 nits, but the level was still sufficient for details to be clearly visible. However, it should be added that with such highly contrasted shots, the halo effect returns – the same one we mentioned regarding blacks. Bright elements can leave a glow on dark backgrounds, and this is immediately noticeable. As we are dealing with a QLED, the colour palette is expanded, and the colours present themselves impressively. The problem is that with such a flagship model, we expected better numbers. 91% coverage of DCI-P3 and about 67% BT.2020 are results that can be considered solid but not outstanding. This gives an image that is vibrant and appealing; however, the competition in this and lower price ranges can show 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 quite a few issues that a director would definitely not want to see when filming 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, which makes the colours too warm, and the overall effect takes on a pink or yellow tint. The Colour Checker test confirms these errors – the colour samples veer into incorrect shades, which impacts the overall colour fidelity. A less significant issue is the brightness characteristic. However, it is also not free of flaws. The gamma chart shows a strong spike at the beginning, which can cause the image to be overly bright, and the EOTF curve responsible for brightness in 4K HDR materials also shows considerable fluctuations – it is evident that the television struggles to maintain the appropriate brightness, but it does not always succeed effectively.

We tested the QN990F in Filmmaker mode, which is the best out-of-the-box setting available. Right from the start, we noticed a few significant issues. The biggest problem was with white balance. Due to too little blue, as well as incorrect 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 noticed problems with brightness management—the TV struggled to maintain details in the smallest parts of the image, mainly due to how it manages backlight zones. Fortunately, Samsung provides plenty of room for adjustment when it comes to setting corrections. We know that with proper calibration, much more can be extracted from this screen.

After calibrating the movie mode of the TCL C655 / C69B television, the white balance has been adjusted, and the colours look as they should – confirmed only by slight deviations in the Colour Checker test. The gamma is really accurate, which means the television shouldn’t have issues 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 – it’s just difficult for them to "shine" brighter in a given part of the screen. Despite this construction limitation that cannot be bypassed, we recommend adjustments in the settings, as the overall colour presentation looks really very good.

After carrying out the calibration, we managed to bring the white balance into order and eliminate the earlier shortcomings in shades of blue. As a result, the picture no longer looked like it had a slight yellowish filter – the whites are cleaner, and the whole thing presents itself much more naturally. We also managed to tame the brightness characteristic in HDR content to some extent. The television now handles maintaining detail in blacks much better and does not lose them as much as before. However, when we look at the EOTF curve and how 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, how it is managed by the QN990F, which is practically impossible to eliminate completely. Despite this, after calibration, the picture looks significantly more natural, mainly due to the correct exposure of white light. The final effect is definitely more pleasant to the eye and closer to what we expect from a flagship television.

The TCL C655 / C69B TV handles tonal transitions well in lower quality materials. The “Gradual Smoothing” function at its lowest setting effectively eliminates visible banding, but it also results in a loss of detail, for example, in the texture of objects. A plus is that it does not interfere with film grain, allowing the image to maintain a natural look.

In terms of digital processing, the TV adds a significant amount of artificial sharpness, which may appeal to those who prefer a vivid image. For those who prefer a more subtle rendering of details, this may be a drawback. Another downside is the quite aggressive overscan – the image is cropped, which leads to the loss of fragments at the edges and limits the field of view.

The QN990F deserves the highest praise for its upscaling capabilities. The processor responsible for 'lifting' classic TV to 8K resolution does a really decent job. Watching footage in 576p, we had no illusions that we would suddenly see a miraculous transformation like in an advertisement, where the image magically turns into crystal-clear 8K. Nevertheless, the final effect was surprisingly good; the picture looked clean and sharp. It's just a shame that the TV, like most Samsung models, has an overscan issue, which slightly cuts off 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 noticeable. Unfortunately, here we felt quite disappointed. The feature performs poorly – it struggles with unwanted banding and can even introduce its own artifacts. On the plus side, it’s worth noting that the TV doesn’t remove film grain when using this feature, but in practice, that’s a poor consolation when the noise reduction itself turns out to be practically useless.

Unlike the 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 144 Hz panel, which opens up entirely new possibilities – for both gamers and movie lovers. With its full motion smoother, the television delivers incredible image fluidity, eliminating ghosting and improving the comfort of watching dynamic scenes. It's worth noting that this technology operates across the full refresh rate range, meaning there's no need to compromise between fluidity and quality. Additionally, the "Flicker Reduction" feature allows you to adjust the fluidity to your own preferences – you can choose a more cinematic effect with visible frame rate or a maximally smooth image.

QN990F can easily be called one of the fastest TVs in the world. In 4K mode, it can display images at a frequency of up to 240 Hz, which until now was more associated with gaming monitors than with living room TVs. However, in everyday viewing, what's more important is how it handles an 8K signal at 120 Hz – and it performs very well here too. Motion remains smooth, and the TV handles even the most demanding content without breaking a sweat. Additionally, there's the motion smoother, or "Image Clarity." Thanks to this, you can adjust the picture to your preferences – leave it slightly cinematic with a bit of judder or switch to maximum smoothness, which works brilliantly for things like sports broadcasts.

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

The TV supports variable refresh rate (VRR), eliminating screen tearing, while the automatic low latency mode (ALLM) ensures that gaming starts instantly, without the need for manual adjustment of settings. There is also support for Dolby Vision and HGiG, ensuring that the image quality in games is even better – details are sharp, colours are natural, and contrast is perfectly balanced.

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

It has to be said straightforwardly – the QN990F is one of those televisions that scream they were designed with gamers in mind. Samsung has been developing its gaming solutions for years, but here we have a true package. 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 truly impressive. To start, we have the Game Bar – a handy menu that allows you to quickly check and change game-related settings. You can see things like VRR enabled, frame rate, or aspect ratio settings there. It's like a little “dashboard” so you don’t have to dig deep into the menu to fix something. Since the word VRR was mentioned: yes, variable refresh rate is present here and works flawlessly. Plus, there's ALLM, which automatically switches the television to game mode as soon as the console is turned on. These may seem like small details, but together they make using the QN990F simply convenient and hassle-free.

However, the greatest impression comes from the number of ports. Four wireless HDMI 2.1 ports as standard is already great news, as there's no need to choose whether to connect the console, the receiver, or maybe even the PC. There's comfortably enough room for everything here. And if we add another micro HDMI (which we recommend connecting directly to the console), hidden within the casing, then in practice we have five inputs in full 2.1 standard. Let’s also add support for high refresh rates – 120 Hz in 8K or even 240 Hz in 4K – and we get a television that not only keeps up with the new consoles but also feels ready for consoles that aren’t even out yet.