Samsung S90F QD-OLED vs Hisense U7S Pro

The biggest difference between the 65-inch S90F and the other versions is brightness. The QD-OLED panel can reach up to 1700 nits in laboratory tests, which is over 500 nits more than the variant with a WOLED matrix. This translates to a decidedly stronger and more engaging HDR effect. In most scenes, bright parts of the image look fantastic, and we must admit that we were positively surprised, as we expected results more similar to the WOLED version, but we got an effect that makes a great impression even in films. Just like with every OLED, there are moments when the panel needs to limit its brightness a bit. This mainly refers to full-screen, very demanding scenes – for example, in the last test frame from the film "The Meg," the brightness drops to around 800 nits. However, it is hard to consider this a disadvantage, as it is still an excellent result, unprecedented in OLED televisions in this price range. Everything suggests that the 65-inch S90F could be one of the best choices this year for those looking for a strong OLED at a reasonable price. Another advantage of the QD-OLED matrix in HDR content is its colour gamut coverage. Thanks to quantum dots, the television achieves almost a full 100% of the DCI-P3 colour space and nearly 90% of the BT.2020 colour space. These values place it alongside much more expensive models and make it exceptional in its class.

Let's start with the fact that the U7S Pro is an impressively bright television. In calibrated mode our measurement equipment indicated a staggering 2,200 nits of peak brightness. This is an outstanding result, especially given that this model is positioned more as a mid-range set. However, as we know, peak brightness on test patterns is one thing and real film scenes another. Unfortunately, in actual video material the backlight output drops noticeably. Admittedly, in the most demanding moments the TV can still exceed 1,000 nits, which is still a great result and fits the mastering standards of most HDR films, but aggressively tuned local dimming algorithms turn out to be the real challenge. Because of them, small bright details, such as stars or the moon in a night sky, are noticeably dimmed. The TV tries to maintain deep blacks at all costs, which is understandable, but unfortunately this comes at the expense of the dynamic impact and the brightness of the HDR effect. The colour reproduction is worth praising. The new U7S Pro is a QLED design that provides very wide colour gamut coverage. Unlike last year’s model (U7Q Pro), this year’s variant is a 'true' QLED rather than a solution based on a PFS filter. As a result, colour saturation has increased noticeably and coverage of the most demanding BT.2020 colour space has exceeded 81%.

Samsung S90F, like most modern televisions, offers several picture modes, but in line with our tradition, we tested it in the most important one, which is Filmmaker. This setting makes the image look much more natural than in the default, often overly saturated modes. It is neither excessively vivid nor artificially subdued – just closer to what one should actually see. However, this does not mean it is perfect. The S90F had noticeable shortcomings in white balance, mainly in the blue range, which gave a slightly yellowish filter effect on most scenes. One might argue that it looks more "filmic" because it is warmer, but let’s not kid ourselves – George Lucas didn't shoot Star Wars in sepia 😉 (a comparison with the scene can be found, as always, below). In HDR materials, there was also an issue with brightness management. The EOTF curve clearly showed that the television brightens the picture more than it should, leading to some effects appearing too intense and deviating from the reference. Fortunately, a large part of these shortcomings can be eliminated through professional calibration – we will discuss the effects of this procedure further on in the test.

We tested the U7S Pro, as we always do, in the best factory-calibrated picture mode, namely Filmmaker Mode. The colours on display can be judged in two ways. The most disappointing was the preset intended for viewing SDR content, that is conventional television, YouTube and other less demanding material. The image there was noticeably yellowish, which turned out to be a direct consequence of an incorrectly set white balance. As our graphs show, this was due to a large deficiency of the blue component, which drastically affected the overall colour temperature. You can see this clearly on the ColorChecker charts and on the colour gamut plots themselves, where most samples shifted towards yellow. Fortunately the factory HDR mode performed much better; there the colour errors hovered around a Delta E of 3, which is already a very solid result.

Calibration quickly revealed that the S90F has a significant margin of capability. The image in SDR immediately gained a natural quality – classic films no longer looked as if someone had applied a yellowish filter to them, and the colours regained their proper character. It is a return to the atmosphere of the original, without the impression that someone tried to "age" it forcefully. In HDR content, the difference was even more pronounced. The EOTF curve was managed almost to a reference level, and any deviations are so subtle that most viewers won't even notice them. In practice, the S90F shows an image very close to perfection after calibration. Compared to the WOLED version, it performs even better – mainly due to the wider colour gamut coverage, which makes the colours appear fuller and more intense.

We know, however, that the company Hisense is capable of much more – as previous generations have demonstrated – which is why we couldn't simply overlook the factory shortcomings of the U7S Pro model in everyday content. As is often the case, the television underwent professional calibration. The conclusions? This process brought about a colossal change. After manually adjusting the white balance and supplementing the deficiencies in the blue component, the annoying yellow tint disappeared as if by magic. White became naturally pure, and skin tones gained the appropriate, healthy hue. Importantly, calibration not only tamed the capricious SDR mode but also allowed us to extract the maximum potential from the panel, reducing average colour reproduction errors to levels nearly imperceptible to the human eye. The only thing we must criticise after the whole process is the very nature of the Mini-LED backlight and its specific interaction with the HDR signal. The aggressively tuned local dimming algorithms significantly interfere with the EOTF brightness curve. As a result, the backlight does not always work perfectly with the creator's intention – depending on the scene being viewed, the curve can noticeably deviate either above or below the reference, which at times disrupts the ideal dynamics of HDR imagery.

The S90F performs really well here, although there are some comments that recur with most Samsung televisions. The noise reduction feature can effectively smooth out unwanted colour transitions in poorer materials, such as television or YouTube, making them simply look better. However, it should be noted that it operates quite aggressively and can also soften elements we wouldn't want to touch, like facial details. Therefore, if we want to use it, it’s best to set it to 'medium' and be aware of the compromise it entails. The upscaling itself is at a high level – low-quality materials are upscaled towards a 4K-like image. The only caveat is that the S90F can still struggle with so-called overscan, meaning it slightly trims edges with very poor materials like 576p and lower.

The digital processing of lower-quality signals is of a very high standard here, all thanks to the MediaTek Pentonic 800 processor used in the U7S Pro. Upscaling itself also performs very well, meaning the TV's ability to lift lower-resolution sources to 4K is strong. We didn't notice any unnatural, sharp contours on the screen, and our test image featuring a model simply looked attractive.

S90F is an OLED with a refresh rate of 144 Hz, but in practice, it primarily indicates how it performs at 120 Hz, as this frequency is most significant when watching sports. The QD-OLED panel is no different in this regard from WOLED panels – the response of the pixels is nearly instantaneous, so motion is rendered with surgical precision. The result is predictable. The image is virtually devoid of motion blur, making gaming on consoles, matches, or other sports broadcasts incredibly enjoyable on the S90F.

Fans of films and series have not been overlooked either. Like every Samsung television with a refresh rate of 120 Hz and above, the S90F features a proprietary motion smoothing technology called "Image Clarity." Here, we find two sliders – blur reduction and judder reduction – which allow for improved fluidity of materials recorded at 24 frames and tailoring the effect to personal preferences.

Hisense U7S Pro uses a panel with a maximum refresh rate of 165 Hz at 4K, and in game mode it can even reach 330 Hz at Full HD. However, it's worth remembering that these top figures matter little in everyday use, because most content is limited to a maximum of 120 Hz (for example when playing on a console). Even so, the TV handles motion quite well and performs very respectably for an LCD design.

It's hard to fault the smoothness itself. In the menu you'll find a motion smoothing feature called "Motion Enhancement", which hides two sliders: blur reduction and judder reduction. These allow manual configuration of the smoother, which works well for both films and sport, effectively improving the raw TV signal.

The S90F is a television that truly brings a lot of joy when gaming. To start, we have four full-fledged HDMI 2.1 ports, which means you can connect all consoles and PCs without worrying about which device has priority. This is a convenient and practical solution that is by no means a given with other manufacturers. Additionally, there are key features such as automatic game mode (ALLM), which automatically switches the screen to low-latency settings, and VRR frame synchronization that operates in a wide range from 48 to 144 Hz. As a result, the picture remains smooth regardless of whether we're playing fast-paced online shooters or more leisurely narrative titles. The Game Bar also deserves a mention – a panel that allows quick access to several useful additions. For example, you can enable an additional crosshair in the centre of the screen, enlarge the minimap, or, in the case of PC, change the aspect ratio. Lastly, there is also the unique Game Motion Plus mode from Samsung. Its purpose is to smooth out older or poorly optimized titles, and it actually works pretty well. Thanks to this mode, even less polished games can look better and provide a more enjoyable gaming experience than on other televisions that theoretically offer the same technical specifications.

If you plan to connect a console or PC to the U7S Pro, you'll be more than satisfied. This TV is excellent for gamers. Hisense didn't spare any expense and fitted it with four HDMI 2.1 ports with full 48 Gbps bandwidth, so you don't need to juggle cables, as each port supports the full feature set. It offers automatic low-latency mode (ALLM) and VRR, which operates across a wide range from 48 Hz up to a whopping 330 Hz. Of course, that 330 Hz is for now a bit of a gimmick for owners of powerful PCs, since consoles will still be limited to 120 Hz, but it's good to have that headroom for the future. The Game Bar is also very useful while gaming. It's a handy on-screen menu for players where, without leaving the main TV settings, you can quickly change picture mode, enable a crosshair in the centre of the screen, or even switch to an ultra-wide display aspect, which PC simulator fans will appreciate. The only drawback to be aware of is an incorrect implementation of the HGiG standard in games. The TV ignores the console's HDR10 instructions and keeps forcefully altering the image in an attempt to "improve" it, which makes proper HDR setup in the console menu (where you set brightness using the symbols/checkerboard pattern) somewhat more awkward.