Samsung S90H / S92H (QD-OLED) vs LG MRGB85B

The Samsung S90H is a truly bright TV for the midrange among OLEDs. In synthetic measurements its peak brightness reached about 1650 nits. That's an outstanding result in this class, roughly 50% higher than what we’ve seen from previous models at this price point. Crucially, these tests translate directly to real video material. In 4 out of 5 film shots we tested the S90H’s brightness hovered around 1300–1500 nits. That headroom lets the TV reproduce most HDR movies with the same dynamics and expression the creators intended in post-production. Of course, on full-screen, very bright scenes the result is naturally lower and drops to around 900 nits. That’s a direct result of the protection systems that prevent the OLED panel from being overloaded. Even in that scenario there’s no reason to complain. Those 900 nits across the entire screen is still a very high level, ensuring excellent dynamics in HDR content.

A major advantage of QD-OLED TVs has always been color, and the S90H is no exception. The DCI-P3 gamut we measured reached a full 100% (exactly 99.9%), while coverage of the much wider BT.2020 gamut hit roughly 89%. That’s a great result, allowing you to enjoy extremely saturated, vivid colors in HDR content. It’s worth noting these figures are better than WOLED panels, which is especially noticeable in very demanding film scenes.

LG MRGB85 offers moderate brightness. On test patterns it reaches about 700 nits, which by itself is a decent result. In actual movie scenes the values are lower and most often fall between 400 and 600 nits. Bright, expansive shots perform best. In scenes with a lot of black the TV noticeably limits luminance, trying to maintain the highest possible contrast. The HDR effect is therefore visible, but it is far from the level offered by more advanced Mini-LED designs. Especially in darker parts of films the limitations of edge-lit backlighting and imprecise local dimming become noticeable again.

HDR Colors

A much stronger suit of the MRGB85 is its colors. The TV covers about 95% of the DCI-P3 color space and 74% of BT.2020, allowing HDR material to look vivid and striking. Colors are well saturated, and the difference compared with basic LCD TVs is clearly visible. It is worth noting, however, that this is not a classic RGB backlight, where each of the three primary colors is generated by a separate diode. Red is produced by a PFS phosphor, which expands the palette and yields more saturated red shades. This solution works well for color reproduction, but it does not change the limitations of dimming itself. The LEDs are not driven independently in the way the series name might suggest... so it turns out that Mini RGB is not the same as Mini-LED RGB!

The next stage of the test was to check how the S90H handles color reproduction without any calibration. As always, we took measurements in Filmmaker Mode, the best out-of-the-box picture setting. And here Samsung truly deserves praise. The factory tuning is at a very high level, and a few years ago that wasn't one of its strong points. The white balance was set correctly, as was the brightness response. The average color error (Delta E) hovered around 3, which is below the level at which most people can notice inaccuracies. Only in the brightest shades of gray did values slightly approach 4, but it's still hard to consider that a real viewing issue. For settings straight out of the box, the result is simply excellent.

We tested the TV in Filmmaker Mode, because among the available settings it produced the image closest to the reference. Factory color reproduction was not perfect. The biggest deviations were in the white balance, with too much red and not enough blue, which pushed the picture noticeably toward warmer tones. Whites took on a slightly yellowish cast, and skin tones and bright areas did not always look natural. It wasn’t a flaw that completely ruined the viewing experience, but in a direct comparison with the same screen after calibration the difference was clearly visible.

Okay, but you know we wouldn’t be ourselves if we didn’t check how much more we could squeeze out of the S90H with professional calibration. And there was no big surprise here: since the out-of-the-box settings were already very good, there wasn’t a huge reserve. Even so, we managed to refine the picture almost to perfection. After calibration the average color reproduction errors fell below the threshold of perception, reaching Delta E values under 2 for both SDR and HDR material. We also improved the brightness response, so the image more faithfully reflects the creators’ intent and maintains proper tonality across the full brightness range. Not necessarily, because the factory settings already deliver a very high level. If you want the most accurate image and want to squeeze absolutely everything out of this panel, the S90H offers that potential. After professional calibration it’s simply an almost reference display.

Will the difference be spectacular for everyone? Not necessarily. It depends a lot on the individual unit. Our sample was very well tuned straight out of the box, but that doesn’t mean every S90H will perform at the same level. Even identical models can vary in their factory calibration. That’s exactly why professional calibration makes sense: it lets you bring a specific unit to the highest possible accuracy instead of hoping for a bit of luck when buying.

Calibration primarily corrected the white balance and removed the previously visible warm tint. After the adjustment, whites no longer had a yellow cast and colors became more neutral and natural. The biggest improvement was seen in SDR content, where the picture looked even and much closer to the reference. A similar effect was achieved in HDR. After calibration the picture became more controlled, although not all of the TV's limitations could be eliminated. The biggest issue remained the intense reds, which were not always reproduced with the necessary precision. In practice the MRGB85 handles everyday SDR content very well, but in more demanding HDR material its limitations remain clearly visible.

In this regard Samsung has practically changed nothing compared with last year’s model, which is actually pretty good news. The function responsible for smoothing tonal transitions still very effectively reduces posterization. You should remember, however, that it works quite aggressively, because besides removing artifacts it can also eliminate film grain and slightly soften fine image details. As always, it’s a matter of compromise and personal preference. If you want the most faithful reproduction of the source, we recommend leaving this function turned off.

There’s also no revolution when it comes to upscaling. The S90H uses the same proprietary NQ4 Gen3 image processor as its predecessor, so scaling quality has remained virtually unchanged. The TV handles lower-resolution content well, effectively improving sharpness. The overscan issue still hasn’t been solved, though. With some older material, especially archival footage, parts of the image at the edges may be cropped. It’s a minor flaw, but it’s a shame Samsung left this problem unchanged for another year running.

Upscaling and digital image processing perform quite well on the LG MRGB85. The Alpha 8 AI 4K Gen7 processor efficiently upscales lower-resolution content, and you can easily disable overscan regardless of the source. The TV also handles compression artifacts fairly well. The "Smooth Gradation" feature can effectively reduce visible banding and tonal unevenness, but it doesn't always work precisely. At higher settings it can smooth over fine details, for example material textures. On the plus side, it doesn't remove film grain. It's safest to use the "Low" or "Medium" setting, which provides the best compromise between artifact reduction and detail retention.

In terms of motion smoothness, the S90H delivers a very high level. New here is a panel with a 165 Hz refresh rate. In practice, when watching movies or sports broadcasts it's hard to notice any difference, because that kind of content doesn't use refresh rates higher than 120 Hz. The extra 165 Hz will be appreciated mainly by PC gamers who can generate that many frames per second. Samsung equipped the TV with advanced motion settings. You get two sliders (judder reduction and blur reduction) that make it easy to tailor the picture's character to your preferences. You can easily get very smooth motion for sports, but you can just as easily preserve a more cinematic feel with the typical 24 fps. It all depends on which effect you prefer.

The LG MRGB85 is equipped with a VA panel with a native 144 Hz refresh rate, so it performs very well in terms of motion smoothness. The TV easily handles 120 Hz content from consoles and higher refresh rates when connected to a PC. That matters not only for gaming but also when watching sports, where camera movement is noticeably smoother than on basic 60 Hz models. There's also the TruMotion system, which lets you set the level of motion smoothing yourself. You can keep a more cinematic motion or increase smoothness, which works well for sports broadcasts and TV shows. The range of adjustment is wide, so you can easily tailor the motion smoothing to your preferences.

From the start the Samsung S90H feels like a TV designed with gamers in mind, and honestly... it's hard to blame them. The manufacturer equipped it with everything you’d expect from a gaming TV. You get four full-bandwidth HDMI 2.1 ports, support for ALLM and VRR, and very high refresh rates. There’s also a clear Game Bar that lets you quickly check key picture parameters or change settings without leaving the game. Another very welcome improvement is that HGiG now works properly. Last year it could cause a lot of issues, but on the S90H it behaves exactly as it should.

Samsung’s real ace, however, is its proprietary Game Motion Plus mode. The feature works similarly to the motion smoothing known from movies, improving animation smoothness in games while keeping input lag at a very reasonable level. For titles running at 30/60 fps, with the right settings, input lag did not exceed 40 ms in our tests. That’s a very good result, especially since enabling similar features from many manufacturers can end up increasing lag three to four times. It’s a feature that partly makes up for the lack of Dolby Vision Gaming. A smoother image often provides more noticeable benefits than the HDR format itself, so for many gamers this will be a far more valuable addition.

When it comes to gaming, the LG MRGB85 performs best by far. The manufacturer didn’t skimp on the feature set and essentially brought the full suite of functions from higher-end TVs to this model. You get three HDMI 2.1 ports with full 48 Gbps bandwidth. Each of them supports 4K 120 Hz from consoles, and when connected to a PC also 4K 144 Hz. So you don’t have to worry about which port to plug your console or PC into, since they all offer the same capabilities.

It also includes VRR, AMD FreeSync Premium, NVIDIA G-Sync Compatible, ALLM, and HGiG. Dolby Vision Gaming is present as well, allowing supported games to use high refresh rates and dynamic HDR simultaneously on Xbox. Rounding it out is Game Optimizer, a handy in-game menu for gamers. Without leaving the game you can change the picture profile, brighten shadow details, or check the current frame rate. In terms of gaming features, the MRGB85 therefore offers almost the same as much more expensive LG models.