Samsung OLED 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 achieve up to 1700 nits in laboratory tests, which is over 500 nits more than the variant with the WOLED panel. This translates to a significantly stronger and more engaging HDR effect. In most scenes, bright parts of the image look fantastic, and we have to admit we were pleasantly surprised because we expected results closer to the WOLED version, but we got an effect that makes a big impression even in movies. As with any OLED, there are moments when the panel has to limit brightness somewhat. This mainly concerns full-screen, very demanding scenes – for example, in the last test frame from the movie "The Meg," brightness drops to around 800 nits. However, it's hard to consider this a flaw since it’s still an excellent result, unprecedented in OLED TVs in this price range. All signs indicate 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 panel in HDR content is its color gamut coverage. Thanks to quantum dots, the television achieves almost full 100% of the DCI-P3 color gamut and nearly 90% of the BT.2020 gamut. These values place it alongside much more expensive models and make it exceptional in its class.

Let’s start by saying that the U7S Pro is an impressively bright television – in calibrated mode, our measuring equipment indicated a staggering 2200 nits of peak brightness! This is an impressive result, considering that this model is positioned as mid-range.

However, as we know, peak brightness on test patterns is one thing, and actual movie scenes are another. Unfortunately, in real video materials, the backlight power clearly drops. While in the most demanding moments the television can still exceed the 1000 nit barrier – which is still a great result, perfectly fitting the mastering standards of most HDR films – the truly challenging aspect turns out to be the aggressively tuned local dimming algorithms. Because of them, small, bright details, such as stars or the moon in the night sky, are noticeably dimmed. The television tries at all costs to maintain deep black levels, which is of course understandable, but unfortunately, this comes at the cost of dynamics and the brilliance of the HDR effect itself.

The color reproduction is worth praising. The new U7S Pro is a QLED construction that provides very wide color gamut coverage. Unlike last year's model (U7Q Pro), this year's variant is now a “true” QLED, rather than a solution based on a PFS filter. As a result, color saturation has noticeably increased, and coverage of the most demanding BT.2020 space has exceeded the 81% barrier.

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

We tested the U7S Pro model – as always – in the best factory-tuned picture mode, which is Filmmaker Mode. We can evaluate the displayed colors in two ways. The most disappointing was the profile intended for watching SDR content, such as traditional television, YouTube, and other less demanding materials. The picture was clearly too yellow, which turned out to be a direct consequence of a poorly set white balance. As our graphs show, there is a huge deficiency of the blue component here, which drastically affected the overall color temperature. This is clearly evident on the ColorChecker charts and the graphs of the color palette itself, where most samples veered toward yellow. Fortunately, the factory HDR mode performed significantly better – there, the color errors hovered around a Delta E value of 3, which is already a really solid result.

Calibration quickly showed that the S90F has a substantial reserve of capabilities. The image in SDR immediately gained a natural quality – classic films stopped looking as if someone had applied a yellowish filter to them, and the colors regained their true character. It’s a return to the atmosphere of the original, without the impression that someone tried to "age" it artificially. 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 after calibration displays an image very close to perfection. Compared to the WOLED version, it performs even better – mainly due to the wider color gamut coverage, which makes the colors look fuller and more vibrant.

However, we know that the Hisense company can do much more – as previous generations have proven – which is why we simply couldn't leave the factory flaws of the U7S Pro model in everyday content. As always in such cases, we subjected the television to professional calibration. The conclusions? This process brought about a colossal change. After manually adjusting the white balance and compensating for the deficiencies in the blue component, the annoying yellow tint disappeared like magic. The white became naturally pure, and skin tones gained the proper, healthy hue. Importantly, the calibration not only tamed the capricious SDR mode but also allowed us to squeeze the maximum from the panel's potential, reducing the average color reproduction errors to values almost imperceptible to the human eye. The only thing we have to nitpick after the entire process is the very nature of the Mini-LED backlighting and its specific cooperation with the HDR signal. The aggressively tuned local dimming algorithms significantly interfere with the EOTF brightness curve. As a result, the backlighting does not always work perfectly with the creator's intent – depending on the scene being viewed, the curve can noticeably run either above or below the reference, which at times disrupts the perfect dynamics of HDR image.

The S90F performs really well here, although there are some comments that are repeated in the case of most Samsung TVs. The noise reduction feature can effectively smooth out unwanted color transitions in lower-quality 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 that we wouldn't want to touch, like facial details. Therefore, if we want to use it, it’s best to use it in the "medium" setting and be aware of the compromise it brings. The upscaling itself is at a high level – low-quality materials are enhanced towards a 4K-like image. The only caveat is that the S90F can still have problems with so-called overscan, which is slight trimming of the edges in very poor materials like 576p and lower.

The digital processing of lower quality signals is at a very high level here, thanks to the MediaTek Pentonic 800 processor utilized in the U7S Pro. The upscaling itself, which is the TV's ability to enhance lower resolution signals to 4K, is also performing well. We did not notice any unnatural, sharp edges on the screen, and our test image with the model looked simply attractive.

S90F is an OLED with a refresh rate of 144 Hz, but in practice, what matters most is how it performs at 120 Hz, as this frequency is the most significant when watching sports. The QD-OLED panel is no different in this regard from WOLED panels—the pixel response is almost instantaneous, allowing motion to be rendered with surgical precision. The effect is easy to predict. The image is practically free of ghosting, making gaming on consoles, matches, or other sports broadcasts a great pleasure on the S90F.

Fans of movies and series are not forgotten either. Like every Samsung TV with a refresh rate of 120 Hz and above, the S90F is equipped with a proprietary motion smoother called "Image Clarity." Here, we find two sliders—motion blur reduction and judder reduction—that allow you to improve the fluidity of materials recorded at 24 frames and adjust the effect to your personal preferences.

The Hisense U7S Pro features a panel with a maximum refresh rate of 165 Hz in 4K, and in game mode, it can reach up to 330 Hz at Full HD resolution. However, it's important to note that these highest numbers have little significance in everyday use, as most content supports a maximum of 120 Hz (e.g., while gaming on a console). Nevertheless, the TV handles motion quite well and performs really decently for an LCD construction.

There's hardly anything to complain about regarding fluidity. In the menu, we find a motion smoothness enhancer called "Motion Enhancement," which hides two sliders: blur reduction and judder reduction. They allow for manual configuration of the smoothness enhancer, which works well for both movies and sports, effectively improving the raw television signal.

S90F is a television that truly brings a lot of joy when gaming. Right off the bat, we get four full-fledged HDMI 2.1 ports, which means you can connect all consoles and PCs without having to figure out which device takes priority. This is a convenient and practical solution that is not a given with other manufacturers. Additionally, there are key features such as the automatic game mode (ALLM), which switches the screen to low-latency settings, and VRR frame synchronization working over a wide range from 48 to 144 Hz. This ensures that the picture remains smooth regardless of whether we are playing fast-paced online shooters or calmer story-driven titles. Another noteworthy feature is the Game Bar – a panel that allows quick access to several useful additions. For example, you can turn on an additional crosshair in the center of the screen, enlarge the minimap, or, in the case of a PC, change the aspect ratio. Finally, there is also the unique Game Motion Plus mode exclusive to Samsung. Its purpose is to smooth out older or less optimized titles, and it actually works quite well. Thanks to this mode, even less polished games can look better and provide more enjoyment 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 will be more than satisfied – this television is excellent equipment for gamers. Hisense didn't spare any expense and included 4 HDMI 2.1 ports with full bandwidth of 48 Gbps. You won't need to juggle cables, as each port will handle the full package of features. We have an automatic game mode (ALLM) and VRR, which works over a wide range from 48 Hz to a cosmic 330 Hz. Of course, those 330 Hz are currently just a gimmick for owners of powerful PCs, as consoles will still be limited to 120 Hz, but it's good to have that reserve for the future. The Game Bar also works very well during gaming. It's a handy menu bar for gamers, where you can quickly change the picture mode, turn on a crosshair in the center of the screen, and even change the aspect ratio to ultra-wide without going into the main settings of the television, which PC simulator fans will appreciate. The only downside worth noting is the incorrect implementation of the HGiG format in games. This means that the television ignores the instructions from the console regarding the image generated in HDR10 and constantly meddles with the image it produces, trying to "enhance" it in its own way. Because of this, the correct configuration of HDR in the console menu (where brightness is set on the logo/checkerboard) is somewhat complicated.