Samsung QN900D Neo QLED 8K vs Samsung QN900F

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.

QN900F is truly a bright television – it can generate nearly 2000 nits, a figure that remains unattainable for most models available on the market. But the mere ability to achieve such brightness is not everything – it also matters whether the television can make good use of it. And here, it is not always perfect. Our tests on cinematic test patterns showed that in scenes such as those from Life of Pi or The Meg, the QN900F can truly shine – literally and metaphorically. In such moments, its greatest advantage, which is brightness, makes a huge impression. However, in more demanding scenes, challenges arise – similar to when assessing contrast. When smaller, bright elements appear on screen, the television often struggles with the decision: should it highlight them at the expense of black levels, or perhaps maintain deep blacks while toning down brightness. The result is situations where, for example, in the film Sicario 2, brightness dropped to just 200 nits, making details barely visible. Dimming algorithms could definitely be better for a television of this class.

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.

Testing the QN900F in Filmmaker mode, the characteristic features of the image were quickly noticeable, even though this mode is designed to reflect the director’s vision. The white balance was not perfect – the television displayed distinct deficiencies in the blue colour. This made the entire scene take on a warmer tone, as if someone had applied a subtle filter in shades of yellow and orange. In films where bright shots dominate – for example, scenes in the snow or in strong daylight – this gave the impression of slight warmth that did not always convey the director's intent. The second noticeable element was the management of brightness. The QN900F could sometimes brighten the image more than necessary. It looked as though the exposure had been slightly 'pulled up', causing the scene to lose its naturalness. Shadows were sometimes too shallow, and the contrast slightly weakened. These are not disqualifying errors, but for a television in this price range, it is evident that Filmmaker mode has not been perfected one hundred percent. This is particularly noticeable when we compare its image with what was seen after the screen calibration.

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 calibration, we managed to eliminate errors in white balance and adjust them to a level that can be considered acceptable. It is not perfect, but it is definitely better than the factory settings. Most colour errors now lie within the deltaE 2–3 range, so in practice, they should not be noticeable during everyday viewing. However, the most significant improvement is evident in how the television manages brightness in SDR content. Shadows and details are no longer flattened, which gives the image depth and naturalness. As for 4K HDR material – colours themselves are no longer an issue, but some imperfections of Mini-LED technology can still be observed. The QN900F tends to dim the smallest bright elements too much, causing them to sometimes disappear from view. However, it should be noted that this is a much better solution than boosting the entire screen, which would spoil the contrast. This is more of a characteristic of this technology than a typical flaw, but it is worth keeping in mind. The effects of calibration are truly very good.

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.

If we want to eliminate jarring tonal transitions that can be irritating, for example, while watching YouTube, we can use a feature called noise reduction. It works really effectively – it removes issues with colour blending when we set it to Standard level. However, as with most Samsung televisions, this does involve some compromises. Although we did not notice this feature significantly affecting the structure of objects in the image, it unfortunately reacts quite aggressively to film grain. Most people will likely appreciate this effect – the noise is simply removed – but if someone is looking for an image as close as possible to reference settings, we definitely recommend turning this option off.

When it comes to scaling, or dealing with very low-quality content, the QN900F performs really well. On the test card with the model, the image appeared clear, with only slight aliasing that shouldn't bother most viewers. However, it is worth mentioning one issue – the television sometimes has problems with so-called overscan, which can cause older content to be slightly cropped. This might manifest, for example, in subtitles disappearing from the bottom of the screen.

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.

There really is nothing to complain about here – the QN900F looks very good in terms of motion. With a 165 Hz panel in 4K, it can confidently be said that this television is suitable for both watching sports and gaming. The motion enhancer plays a key role here. It works brilliantly – not only during sports broadcasts, where it can eliminate blurring and image shaking, but also in games, where the animation becomes clearer and smoother. And of course, if someone likes to experiment with films – they also have that option. At lower settings, a slight graininess and cinematic character can be seen, while at higher settings, it takes on a soap opera effect. In other words, everyone can adjust the picture to their preferences, and the television has the power to handle it.

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.

It really is nice here. The QN900F offers a full set of features that we would expect from a top-end gaming television – we have VRR, ALLM, Game Bar, and also cloud gaming applications. However, the biggest standout is the proprietary motion smoother, which also works in games and – importantly – does not introduce noticeable lag. This is something we won't find with its other competitors.

Unfortunately, there is also something concerning. This year, Samsung has evidently messed something up with its televisions. During the testing of the QN900F before its update, it had the HGIG feature, which allowed for perfect adjustment of HDR settings for the console. However, according to our procedures, we always update the equipment to the latest version – in order to give the manufacturer a chance to fix any shortcomings. And here… it turned out the opposite.

After the update, the HGIG feature disappeared from the menu, making the correct configuration of the console for HDR practically impossible. It was supposed to be complete – 165Hz, four HDMI 2.1 ports, a full gaming package… but unfortunately, it turned out to be a small blunder. What a shame.