LG UT8100 (IPS) vs XIAOMI S Mini 2026 (85"-98") 144Hz

The LG UT8100 television unfortunately does not meet expectations in the HDR effect category. A peak brightness of only 300 nits on the luminance chart is well below the required value to fully enjoy HDR effects. In practice, the image resembles SDR quality more than true HDR, which is particularly evident in demanding high-contrast scenes. The coverage of the DCI-P3 colour palette is only 82%, which further limits the ability to present vibrant and rich colours. Instead of impressive visual experiences, we receive a muted and washed-out image. For those looking for a television to fully utilise HDR content, the LG UT8100 model turns out to be quite disappointing.

The larger versions of the Xiaomi S Mini 2026 offer very similar HDR performance. Peak brightness reaches around 1,000 nits, which is a very solid result for a TV in this price bracket. It's most noticeable in bright scenes, where large, heavily lit areas of the picture can look really impressive. The TV has enough brightness headroom that HDR isn't limited to just a slightly brighter image. However, very small pinpoint highlights on an almost completely black background fare worse. In such cases the local dimming system significantly reduces their brightness to avoid lighting adjacent parts of the image and to preserve good blacks. As a result, small reflections or single lamps don't have the same intensity as in much more expensive models. This is typical behaviour for Mini LED TVs and it's hard to treat it as something unique to Xiaomi.

HDR colours

The colour performance is similarly comparable. Although the manufacturer uses the term QLED, the expanded colour gamut here comes from the PFS phosphor. In our measurements the TV covered about 94% of the DCI-P3 space and about 74% of the much more demanding BT.2020. In practice this yields well-saturated colours in most HDR material and it's hard to point to obvious gaps. Limitations appear mainly with the most saturated shades of green, which the TV can no longer reproduce fully.

The Filmmaker Mode on LG UT8100, while theoretically the best for watching movies, has significant issues. The biggest problem is the white balance – drops in blue cause a noticeable yellowing of the image, visible in both HD and 4K content. These issues are confirmed by measurement results in the Colour Checker test, which indicate significant deviations in colour reproduction.

In terms of brightness characteristics, both HD and 4K content exhibit a large tonal boost. The gamma curve in both cases remains well below the reference value of 2.4, which leads to excessive brightening of darker elements of the image. A similar problem is evident in the EOTF curve – in the case of 4K content, the TV struggles to manage brightness correctly, resulting in issues with screen brightness. This means the factory settings of this model require significant adjustment to achieve better picture quality.

On the larger versions of the Xiaomi S Mini 2026, Film mode performs best, although even here the out-of-the-box settings are not without flaws. In SDR the white balance was noticeably warm due to an excess of red. In HDR the opposite was true, with too much blue and too little red, which made the image cooler. Additionally, both the gamma response in SDR and the EOTF curve in HDR sat slightly above the reference values. In practice this resulted in a slightly brightened image, particularly in the midtones. It wasn't a major fault, but with more demanding material you could see that the image wasn't reproduced entirely in line with the filmmakers' intent.

After calibrating the Filmmaker Mode, the gamma has been aligned to practically perfect, reference values, which has significantly improved the overall tonal characteristics in HD content. 4K HDR content also looks better, although some issues are still visible at the extreme ends of the graph, where the curve deviates from the ideal. The EOTF curve performs worse since the TV struggles to maintain the correct brightness values. As a result, the image in some scenes may be too bright or slightly dim, which stems from the device’s design. Nevertheless, the calibration brought significant improvement, particularly for HD content, where the tonal balance and colour reproduction are now at a much higher level.

After calibration we mainly managed to even out the white balance, so colours look much more natural in both SDR and HDR. We also improved the gamma response, so SDR content is no longer unnecessarily brightened and stays closer to reference values. The only larger issue remaining is in HDR. Xiaomi still controls brightness a little too aggressively and renders some scenes brighter than it should. This is less noticeable on the larger models than on the 55–75-inch versions, but the EOTF curve still runs slightly above the reference. In practice HDR is therefore slightly brightened, even though colour reproduction after calibration is already very good.

The fluidity of tonal transitions is also correct, although the effect depends on the settings. The update improved the operation of the smooth gradation function, smoothing transitions better than before, but introduced minor issues with detail loss, e.g. on textures.

Image scaling on LG UT8100 performs very well. The image presents itself decently, with no major issues regarding edge aliasing. Details are preserved at a satisfactory level, making materials of lower resolution look really solid on this television. As a result, users can enjoy watching older content without any noticeable defects in quality.

The larger variants of the Xiaomi S Mini 2026 also use the MT5896 processor and perform similarly in terms of digital image processing. Upscaling isn't a strong suit of this model. Low-resolution material is upscaled to 4K in a fairly basic way and it doesn't recover fine detail as well as more refined TVs. The 85- and 98-inch versions do include a feature intended to reduce posterisation, but it's barely effective. When it's switched on it's hard to notice any real improvement, so in scenes with visible colour banding the TV still does little to address it.

LG UT8100, equipped with a 60 Hz panel, is particularly suited for those watching movies. The television offers the TruMotion system with a de-judder effect adjustment, which allows users to tailor the smoothness of the picture – from more choppy to exceptionally smooth, resembling a soap opera effect, depending on user preferences.

The biggest difference between the various sizes of the Xiaomi S Mini 2026 is the panel's refresh rate. The 55–75-inch variants use a 60 Hz panel, which in practice means noticeably less smooth motion than the larger versions. This is easiest to spot when watching sport, fast-moving scenes or gaming, where the picture isn't as smooth and clear in motion.

LG UT8100 offers basic features for gamers, such as ALLM and Game Bar, which makes it easier to access settings. The TV also supports HGiG, improving picture quality in HDR games. Unfortunately, the lack of support for Dolby Vision and VRR limits the device's capabilities, as does the 60 Hz panel, which excludes support for 120 Hz resolution. This model is more suited for less demanding gaming applications.

The smaller versions of the Xiaomi S Mini 2026 unfortunately have a big limitation for gamers — a 60 Hz panel. In 4K we’re therefore limited to 60 fps and can’t fully take advantage of the PS5 or Xbox Series X. You can run 120 Hz, but only after dropping the resolution to 1080p or 1440p. Other than that, it’s pretty reasonable. The TV supports ALLM and automatically switches to game mode when it detects a console. There’s also a Game Bar where you can quickly check the main gaming settings. Our biggest reservation is HGiG. The HDR calibration screens on the PS5 and Xbox don’t match the TV’s actual capabilities. If you set HDR exactly according to them, some of the brightest elements can simply be blown out.