Hisense UR9S is without doubt a show of force from the Chinese manufacturer when it comes to luminance. On a synthetic test pattern the panel hit as much as 2600 nits, which is an impressive result. But it’s important to clearly separate laboratory results from filmic realities. In real-world content the UR9S behaves much more restrained. Peak brightness in balanced scenes hovers around 1500 nits. In demanding, dark shots, where algorithms must both preserve deep blacks and precisely light small details, brightness can fall drastically, even to around 400 nits. The discrepancy between the chart and reality is therefore huge. This is a direct consequence of conservative local dimming behaviour. When a bright object occupies a large part of the frame, the system can easily maintain a high brightness level. However, in night scenes the priority becomes protecting blacks and fighting halo artefacts (unsightly glows around bright edges). To avoid contrast degradation the TV drastically limits light output. Even so, the UR9S can still produce a very powerful, engaging HDR effect that impresses in bright, spectacular sequences.
Colour gamut coverage
On test patterns the Hisense UR9S performs excellently in terms of colour. DCI-P3 coverage is almost 100%, and the wide BT.2020 as much as 93%. Those are figures even the best QD-OLED TVs don't reach. But again, synthetic measurements are one thing, films and series are another. In real-world scenes the figures dropped to 93% for DCI-P3 and 81% for BT.2020. That’s still a great result, but the advantage of RGB Mini LED is no longer as dramatic as manufacturers promise in marketing materials. One could even say their capability is now close to that of quantum-dot-equipped TVs, the so-called QLEDs. So why is that? To a large extent, colour reproduction here depends on the way the backlight zones operate. When a strongly saturated colour appears next to white or another, more complex element, a single zone must handle both parts of the image at once. Under such conditions the backlight can't maintain extreme saturation of a given colour on the screen, because the emitted light takes on a character closer to white. In the UR9S this has been refined quite well, but still not enough for the TV to maintain such high colour saturation in every situation.
The Samsung S90H in the WOLED variant is still an exceptionally bright TV for its price bracket, although it is slightly dimmer compared with the QD-OLED version. That difference is not as pronounced as in last year’s F series, where gaps sometimes reached 500 nits. Here the parameters of both panels are very similar, with differences in peak brightness of only about 100–150 nits. In small-window measurements the S90H with the WOLED panel easily reaches close to 1,500 nits. That headroom lets it phenomenally convey the dynamics of HDR effects — blooms, light reflections and explosions have the right punch, exactly as intended by the studio creators. As with most OLED displays, when a very bright scene fills the entire screen, panel protection systems kick in and brightness naturally falls to around 700 nits. It’s worth stressing that this is still an excellent result on the market, often noticeably better than many Mini LED screens in the same segment.
Colour gamut coverage
The biggest difference between the two S90H variants lies in colour reproduction and saturation. This stems directly from the different construction of the WOLED panel, which uses an additional white subpixel. As a result, very high-brightness colours don’t achieve quite the same saturation, and the wide-colour volume is slightly more limited than with QD-OLED. That said, in everyday use these differences will be hard for most viewers to notice. Our measured DCI-P3 coverage on the WOLED panel reaches almost 99%, meaning that for the vast majority of real film scenes both variants will present an almost identical image. The real gap only appears in rarer, especially demanding productions that use the ultra-wide BT.2020 gamut. Because of the WOLED panel’s construction, coverage of that standard is roughly 15% lower compared with the S90HAT with a QD-OLED panel, so the brightest, heavily lit HDR colours may appear a touch less vivid.