Samsung QN900D Neo QLED 8K vs XIAOMI A PRO 2025

Under synthetic testing conditions, the television showcased its impressive light output, achieving 1400 nits, which is undeniably remarkable. This capability was also evident in the opening scene of Life of Pi, featuring a vibrant sunrise. However, due to certain dimming algorithm issues, some drawbacks are noticeable. For instance, in test scenes from Sicario 2 and the second scene of Life of Pi, the brightness levels dropped to an average of 500-600 nits. While this performance isn't poor by Mini LED standards, expectations were higher given the premium price of the TV. Nonetheless, the set should be commended for covering a wide colour gamut of DCI-P3 at around 96%. Although some technologies offer higher coverage, this is still a commendable result.

In the HDR category, the Xiaomi A Pro performs poorly overall. Under ideal conditions, it achieves a brightness level of around 250 nits, which is underwhelming. However, many competing models offer similar or even lower brightness levels. Such limited brightness is insufficient to fully showcase the potential of HDR content. In practical terms, the image lacks the depth and intensity expected from high-quality HDR. Instead, the visuals resemble standard dynamic range (SDR), with scenes that should display striking brightness and contrast appearing flat and uninspiring. That said, for its price, the television offers solid DCI-P3 colour gamut coverage at 92%, made possible by its quantum dot (QLED) technology. This ensures vibrant and saturated colours, making it an appealing choice for gamers and movie enthusiasts seeking richer hues and improved colour reproduction compared to standard models.

The television includes a Filmmaker mode, intended to present films in the most authentic way possible, but it does come with some issues. For HD content, the white balance shows a dominance of red and blue, giving the image a pinkish hue. Conversely, for 4K HDR content, the levels of blue and red drop, resulting in a warming effect that shifts colours towards yellow tones. Colour Checker tests confirm this tendency, with colour samples visibly drifting in this direction.

In terms of brightness and contrast, the gamma is notably disrupted. The main issue is a marked spike at the start of the graph, indicating that dark details are excessively brightened, which reduces depth in the darkest parts of the image due to zone dimming. For 4K HDR content, the EOTF curve performs reasonably well but falls below the reference level, affecting the overall image dynamics.

The Xiaomi A Pro 2025 performs best in movie mode for colour reproduction straight out of the box, though it is not without its flaws. An analysis of the white balance shows negative green values, causing distortions in white tones. At full white, there are noticeable deviations, and the high-contrast image leads to poor tonal transitions in red, negatively impacting the overall colour quality. Before calibration, the image often displays a pink hue in its scenery.

The gamma contrast graph falls below the 2.4 mark, indicating an overemphasis on darker tones and a lack of prominence in lighter areas. Additionally, the EOTF curve shows a sharp rise early on, which can result in lost detail in bright scenes and an oversaturated appearance. These issues suggest that further calibration is needed to balance the colour reproduction and enhance the overall image.

Factory colour settings on the Xiaomi A Pro 2025 are average, and while this is common in televisions of its class, users seeking accurate colour representation may need to adjust the settings. After proper calibration, the TV delivers a more natural and vibrant palette, aligning better with cinematic standards. For those prioritising precise colour reproduction, professional calibration will significantly improve image quality.

After calibration, the Filmmaker mode truly lives up to its name. The white balance for both HD and 4K HDR content has been significantly improved, resulting in more natural and consistent colours. The pink hues in HD content and the yellow tint in 4K HDR have been effectively eliminated, enhancing the realism of the image. As a result, the television now offers much better colour reproduction, positively impacting the overall viewing experience.

However, when it comes to brightness, the gamma curve now reveals a noticeable drop at the beginning, making the darkest details more difficult to discern. The EOTF curve for 4K HDR content remains largely unchanged and still falls short of the reference level, meaning the television continues to struggle with maintaining appropriate brightness. This issue is tied to the aggressive dimming algorithm, which affects overall brightness and black levels.

Despite the limitations associated with local dimming, the television has seen an improvement in colour reproduction quality. The Color Checker test results confirm that the colour samples are now much closer to the standards, resulting in a more natural and visually pleasing image.

After calibration, the Xiaomi A Pro 2025 TV shows significant improvement. The white balance is the most noticeable change, with previous errors corrected in HD and 4K content. Most deviations are now minimal, falling within an acceptable range, resulting in a more balanced and natural colour representation that enhances viewing comfort.

In terms of gamma, the drop has been largely addressed, leading to a more consistent rendering of tones across various scenes. However, the EOTF curve still hasn't seen substantial improvement, as there is limited control over dynamic tone mapping. This limitation means that some details may still be lost in bright scenes, affecting the perception of certain materials.

Despite these minor issues, the overall picture quality is improved after calibration. The enhanced white balance and reduced gamma issues provide a more realistic and enjoyable viewing experience. While further adjustments could enhance the image even more, the TV now showcases its potential, meeting the expectations of many users.

The smoothness of tonal transitions in lower-quality materials looks great – the Noise Reduction function effectively smooths tonal transitions while eliminating film grain. Although removing grain is not always desired, the final effect looks very aesthetic, especially for those who prefer a cleaner image.

As for upscaling, the Samsung QN900D demonstrates the enormous capabilities of the new AI technology processor. Photos and materials in lower resolution are upscaled while retaining many details – for example, a photo with a model looks great, devoid of unnecessary jagged edges, and the branches in the background are not overly aliased.

The Xiaomi A Pro 2025 handles tonal transitions effectively, especially when dealing with lower-quality materials. Thanks to its advanced digital processing, the colour contour removal feature performs surprisingly well. Setting this option to "Medium" provides the best balance, enhancing the smoothness of tonal transitions while avoiding excessive smoothing of other image elements, like film grain.

In the case of a tested frame featuring a model with numerous branches in the background, the TV demonstrated its digital processing strengths. Adding artificial sharpness clarified the model’s details, particularly enhancing the hair's definition. However, around the branches, subtle contours emerged due to digital intervention. While this adds detail to the overall image, excessive sharpness can sometimes cause certain elements to appear unnaturally highlighted.

The Samsung QN900D is currently the fastest television in the world – quite literally. With an impressive refresh rate of 240 Hz at 4K resolution, it offers a remarkable performance that PC gamers will undoubtedly appreciate. Movie enthusiasts will also find much to admire, as Samsung provides a 10-level scale in the picture clarity settings, allowing for extensive image customisation. Users can choose whether they want the television to deliver a smoother, more fluid effect at the highest settings, or a more cinematic experience with visible frames at the lowest settings.

The Xiaomi A Pro 2025 features a motion smoothing option known as "Motion Smoothing," which is designed mainly for film viewing. It allows users to adjust the effect to either a more cinematic, film-like appearance with visible frames or a smoother, theatrical image. This feature will likely satisfy movie lovers. However, gamers and sports enthusiasts might be disappointed. The TV uses a 60 Hz refresh rate panel, typical for this price range, which doesn’t offer exceptional motion handling. Our "Ufo" test revealed some motion blur, so those seeking sharper moving images may find it lacking in this regard.

The Samsung QN900D is excellent for console gaming, packed with features gamers will truly appreciate. It comes with 4 HDMI 2.1 ports, but they do not support the full 48 Gb/s bandwidth. However, for most users, this bandwidth is more than adequate. The TV also supports Auto Low Latency Mode (ALLM) and Variable Refresh Rate (VRR), which ensures smoother gameplay and eliminates screen tearing during fast-paced action. Features like G-Sync and FreeSync are also supported, enhancing compatibility with both consoles and PCs equipped with compatible graphics cards, helping to reduce stuttering and provide a smooth image.

A standout feature exclusive to Samsung is the Xbox Game Pass app, allowing users to stream games directly to the TV without needing an Xbox console. This is a very convenient option for gamers who want to enjoy their favourite games without purchasing additional hardware. The Samsung QN900D also features a Game Bar, which provides quick access to gaming-related settings, making it easy to configure the TV for optimal performance.

The Auto Motion Plus Game function offers a special motion smoothing mode that increases the frame rate (up to 4K@60Hz). Importantly, this does not raise input lag significantly, so players can enjoy smoother visuals without sacrificing responsiveness. With all these features, the Samsung QN900D is a top-tier choice for gamers seeking a television with the best possible specifications.

The Xiaomi A Pro 2025 includes several gamer-friendly features, such as the Game Bar, which sets itself apart from the typical dashboards seen in other brands. This feature allows quick access to game-related settings, making it convenient during intense gaming sessions. The TV also supports Automatic Low Latency Mode (ALLM), automatically switching to a game-optimised mode to reduce signal delays. However, it lacks HDMI 2.1 support, limiting compatibility with the latest gaming consoles that require higher bandwidth. Additionally, it does not support features like VRR (Variable Refresh Rate) or G-Sync, which are becoming essential for gamers seeking smoother visuals and reduced tearing. While the Xiaomi A Pro 2025 has some useful features, there are better options in this price range offering more advanced gaming solutions.