Samsung QN900D Neo QLED 8K vs Samsung QN90F / QN92F

The Samsung QN900D television demonstrates its high capabilities in light production in synthetic tests without any issues – 1400 nits is truly an impressive figure. It also showcased these capabilities in the first scene from the film "Life of Pi," where we see a brilliant burst of the rising sun. However, due to problems with the dimming algorithm, some issues can be noticed here. In the test scenes from "Sicario 2" and the second scene from "Life of Pi," these values are no longer as high and amount to around 500-600 nits. While this may not be the worst result among Mini LED televisions, one could expect more given the price of the television. Nonetheless, the television deserves praise for covering a wide colour gamut of DCP P3 at 96%. Although there are technologies offering higher values, this result is still satisfactory.

The Samsung QN90F can truly shine with brightness. In our measurements, it achieved over 2200 nits, which directly translates to the viewing experience. In practice, this means that when a film features a very bright scene – for example, a sunrise in The Meg – the screen looks as if it is actually lit by natural light. This is not just a number from a chart, but a real sense of image intensity! However, the television may not always deliver this full power. With smaller details like reflections or lamps, brightness drops to 500–700 nits. This is a deliberate decision by the algorithms – it allows for better control of the contrast between large and small elements, preventing the image from losing balance. Importantly, this is still a huge improvement compared to last year's QN90D, where similar details were often almost invisible, shining at just 200 nits. Here, the HDR effect is much more consistent and credible. The only downside is the colours. The DCI-P3 coverage has stalled at 91%, which in this price bracket can be considered a rather average result.

The television QN900D offers a Filmmaker mode that has been created with the intention of watching films in the most natural way possible, however, this mode is not without certain flaws. For HD content, the white balance shows a dominance of red and blue colours, causing the image to take on pink hues. In contrast, for 4K HDR content, the situation is the opposite – the decrease in blue and red levels warms up scenes and shifts colours towards yellow tones. This is confirmed by Color Checker tests, which clearly show that colour samples are veering in this direction.

As for brightness and the associated contrast, the gamma is significantly impaired. The biggest issue is a noticeable jump at the beginning of the graph, which indicates that dark details are excessively brightened, resulting in a loss of depth in the darkest areas of the image – this is due to local dimming. For 4K HDR materials, the EOTF curve looks quite good, however, it remains below the reference level, impacting the overall dynamics of the image.

The colour reproduction of the QN90F was tested in Filmmaker mode and, as is often the case with Samsung televisions, this mode proves to be the best starting point straight out of the box. However, this does not mean that the image is free from flaws. The white balance in both SDR and HDR content was surprisingly good – the colours did not drift in any direction and even in its factory settings, it looked solid. A problem arose with the gamma curves and EOTF, which dictate how the television manages brightness. Here, the QN90F significantly brightened the entire image, causing blacks and colours to lose their intensity, and the overall effect resembled that of an applied milky filter. Fortunately, Samsung, unlike many competitors in the miniLED world, provides the user with plenty of tools to control the settings that we do not find with other manufacturers, such as Chinese producers. Therefore, we decided to see if we could squeeze the full potential out of the QN90F because we know that such a high-end series is capable of much more.

After calibration, the Filmmaker mode can indeed be called worthy of its name. The white balance for both HD and 4K HDR content has been significantly improved, making colours more natural and consistent. The image has gained in realism, and pink hues in HD content have been effectively eliminated, as has the yellowish glow in 4K HDR content. Thanks to calibration, the television now offers much better colour reproduction, positively affecting the viewing experience.

As for brightness, the situation with gamma is now quite the opposite – at the beginning of the graph, there is a noticeable drop, making the darkest details harder to discern. The EOTF curve for 4K HDR content has remained largely unchanged and is still below the reference level, meaning the television still struggles to maintain proper brightness. This is related to the aggressive dimming algorithm that affects the overall brightness of the image. You can see how the television fights to maintain high brightness or perfect black.

Despite the limitations associated with local dimming, the Samsung QN900D has improved colour reproduction quality, as confirmed by the Color Checker test results – the colour samples are now much closer to the targets, making the image more natural and pleasing to the eye.

After our adjustment of the settings, the QN90F displayed what it is truly capable of – and it must be admitted that this is one of the best images we have seen on a miniLED screen this year. As we mentioned earlier, the white balance was not a major issue even in its factory state, but only after gamma calibration did it manage to get close to reference values. The same is true for HDR content, where the EOTF curve post-adjustment presents mature and cohesive results. Indeed, in some films, it is noticeable that the smallest elements of the image are slightly brightened, and with a limited number of dimming zones, there is still a risk of halo effect. However, it should be remembered that such phenomena are characteristic of all miniLED televisions, and it is difficult to expect miracles even from the QN90F. The most important thing is that after calibration, the television delivers an image that, in terms of representing the director's vision, confidently competes with many OLED screens available on the market.

The fluidity of tonal transitions in lower-quality materials is impressive – the Noise Reduction feature effectively smooths tonal transitions while eliminating film grain. Although the removal of grain is not always desirable, the overall final effect looks very aesthetically pleasing, particularly for those who prefer a cleaner image.

When it comes to upscaling, or image scaling, QN900D shows the enormous potential of the new processor with AI technology. Images and materials in lower resolution are upscaled while preserving many details – for example, a photo of a model looks fantastic, free of unnecessary jagged edges, and the branches in the background are not overly jagged.

QN90F handles upscaling very well. Materials in lower resolutions, even SD, are enhanced to a clear and sharp image, in which a lot of detail in the background can be seen. This is a significant advantage, as the television makes older content or everyday television look considerably better than on most budget screens. However, the issue of overscan remains, which is the trimming of the screen edges, and this cannot be turned off in Samsung TVs. This can cause some subtitles on the screen to disappear or Auntie's face from the wedding on the VHS tape to be slightly cut off. 😉

Digital image processing also works well. In the menu, we find a function called "noise reduction," which can smooth tonal transitions and improve the reception of lower quality materials, e.g. from YouTube. At the medium setting, the effect is most beneficial – it does not heavily interfere with details, while eliminating the problem of "stepping" in colours. However, it is worth remembering that the function can be quite aggressive and removes natural grain from older films, so it is best to use it in moderation.

Samsung QN900D is currently the fastest television in the world – literally. A refresh rate of 240 Hz in 4K resolution is an incredible value that PC gamers will surely appreciate. As for cinema fans, they will not be disappointed either – Samsung offers a 10-step clarity scale in the picture settings, allowing for image adjustments. We can choose whether the television should provide a smoother, theatrical effect at the highest settings, or a more cinematic experience, with visible frames, at the lowest settings.

The QN90F is equipped with a panel that has a maximum refresh rate of 165 Hz, and although this advantage will primarily be appreciated by PC gamers, it is still worth highlighting. In films or sports broadcasts, we are limited to the classic 120 Hz, but this is not a cause for concern. In practice, the additional motion smoother is of greater importance here. With the "Motion Clarity" setting, we can adjust the picture to our own preferences. The blur reduction option is responsible for fluidity and ghosting in sports. Meanwhile, the "judder reduction" function improves motion smoothness in productions shot at 24 frames, such as films and series. If we set it high, the film appears smoother and more fluid than it was actually shot. Lower values, on the other hand, preserve its cinematic "rawness" with a visible film frame.

Samsung QN900D is a television that offers excellent compatibility with consoles and a range of features that gamers will appreciate. It has 4 HDMI 2.1 ports, although unfortunately without the full bandwidth of 48 Gb/s. Nevertheless, for the average user, this is more than sufficient. Additionally, the television supports Auto Low Latency Mode (ALLM) and Variable Refresh Rate (VRR), which means a smoother image and no screen tearing during dynamic gameplay. The G-Sync and FreeSync technologies also deserve attention, as they ensure optimal cooperation with consoles and computers equipped with the appropriate graphics cards, minimizing stuttering and providing a smooth image.

One of the unique features available only in Samsung televisions is the Xbox Game Pass app, which allows for game streaming without the need for a console. This is a very convenient solution that lets you enjoy your favourite games without the need to purchase additional hardware. Furthermore, the QN900D has a Game Bar – a special panel that enables quick access to game-related settings, making the configuration of game mode fast and intuitive.

Another interesting feature is a function called Auto Motion Plus Game, which is a special motion smoothing mode that can increase the frame rate (operating at a maximum for a 4K@60Hz signal). Importantly, this does not cause a significant increase in input lag, allowing the player to enjoy both greater image smoothness. All these features make the Samsung QN900D an excellent choice for those looking for a gaming television with the highest possible specifications.

QN90F has almost everything to become the perfect television for gamers. Features such as four HDMI ports, VRR, ALLM, and refresh rates reaching up to 165 Hz hardly need reminding. It deserves high praise for the Game Motion Plus mode, which is an original motion smoother for games. Thanks to it, you can add a few “artificial” frames and make the image generated by the console look smoother than it should. This is a very unique solution in the world of televisions – competing systems usually do not offer this – and that is why Samsung has had a strong bargaining chip among gamers for years, even despite the lack of support for the still niche Dolby Vision in games.

So why do we refer to it as an “almost” perfect screen? Unfortunately, similar to recent Samsung models, we noticed a problem with the absence of the HGiG feature. This is a solution that allows the television to leave the control over tone mapping to the console, so that games look exactly as the creators intended. What’s worse, this feature was previously present and disappeared after software updates. Instead of minor improvements, we received a step backwards. It’s a shame, because without this deficiency, the QN90F could truly be the ideal choice for gamers in the miniLED category.