Samsung S90H / S92H (QD-OLED) vs TCL X11L

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.

Such a large number of zones translated not only into deep, inky blacks but also into the panel’s brightness. The X11L is an extremely bright TV. Peak brightness can easily exceed 4000 nits, and with the special "Boost" mode enabled, under specific conditions that brightness can even hover around the marketing figures of 9000–10,000 nits. This is undoubtedly one of the brightest, if not the brightest, screens on the market. But how do those numbers translate to real-world movie measurements? The results are very good, though of course far from the marketing promises. Our measured brightness in actual movie scenes hovered around 2000–3000 nits. That’s an outstanding result, considering that the vast majority of content is produced to those brightness levels, including the rarer material mastered to 4000 nits. But it also shows that the numbers the manufacturer brags about don’t always translate directly to the video content available at home. The only "quirk" (if you can call it that) is that when very small, bright elements appear on the screen, their brightness drops below 2000 nits. The dimming algorithm does this deliberately to preserve deep blacks and minimize halo. This is entirely understandable and the effect remains very strong, but it also demonstrates that even with such powerful hardware, Mini-LED technology has its limits and does not always work without compromise. In HDR, brightness isn’t the only thing that matters; color saturation and color accuracy do as well. On the X11L these are very good thanks to the new Super QLED quantum dots (SQD). The addition of a newly applied filter delivered excellent coverage of the P3 color gamut and the ultra-wide BT.2020. Although it doesn’t reach the advertised 100% of BT.2020, values around 89–90% can be called excellent. Colors are not far off those of RGB Mini-LED panels. We can even say they’re more stable because they use a less demanding algorithm than the one RGB screens often have to deal with.

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.

When you enable the supposedly best Filmmaker Mode, you expect a one-to-one image of what the director saw. On the X11L it's pretty good, but the mode has obvious flaws that our measurements immediately exposed. Let's start with SDR. Both the white balance and the gamma are simply misaligned here. The whites have too much blue and red, giving a faint pink tint. That also hurt the gamma, which instead of holding the cinematic 2.4 runs closer to 2.2. What did that result in? The whole image ends up pushed and artificially brightened. The worst is saved for last: the HDR measurements. Apart from that slight white balance drift, the X11L fails on the brightness management curve called the EOTF. What we saw in the measurements instantly explains what we noticed earlier in the films. The image is unnaturally bright because the curve is massively overshot above the reference. The TV simply and ruthlessly lifts the dark parts of the image to create a "wow" effect, completely ignoring the director's intent.

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.

After a professional calibration we were above all able to fully tame the SDR signal. The X11L responded perfectly to our adjustments. We were able to completely straighten the white balance, eliminate that pink tint, and set gamma to a stable 2.4. After that treatment the picture finally became consistent with the director’s intent, natural and free of artificial boosts. For HDR we also managed to make minor corrections, but the TV’s biggest flaw remained unchanged. I’m talking, of course, about how the X11L manages its brightness and how badly it overshoots the EOTF curve. Unfortunately, TCL provides virtually no tools to manipulate this parameter. Even during professional calibration the software offers no way to tame that curve, so the TV will always tend to brighten the image in HDR.

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.

Like in the C8L model we tested earlier, TCL has delivered a substantial upgrade in its flagship X series in this area. It's all thanks to the MediaTek Pentonic 800 processor used in this model. Thanks to it, features that smooth tonal transitions or even upscale content to higher resolutions finally look the way they should. The biggest Achilles' heel of previous TCL models has finally been addressed. The processor excels at digital processing, and in this respect the TV no longer lags behind flagship models from Korea or even the most refined ones from Japan.

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.

In terms of specs, the X11L can impress: it supports refresh rates up to 144 Hz at 4K, and at Full HD it can be pushed to 288 Hz. But from a real-world perspective, we were most interested in how the screen handles 120 Hz. After all, modern hardware is limited to that rate, led by current-generation consoles. How does it perform in practice? Although it uses a VA panel, the screen doesn't exhibit heavy ghosting. With very fast-moving objects you can notice a slight smear, but it's subtle enough that it doesn't stand out when gaming or watching sports. The motion smoothing feature called "Motion Clarity" is also very helpful; it lets you adjust motion smoothness to your liking. Recommended settings are shown in the photo.

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.

For gamers the X11L is simply a superb screen. TCL has already gotten us used to the fact that its products deliver practically every feature available on the market, and it's exactly the same with the flagship from the X series. Thanks to the new processor, the X11L offers four HDMI 2.1 ports with the full 48 Gbps bandwidth. Naturally, the 2.1 standard brings a set of extremely useful options, such as Auto Low Latency Mode (ALLM) and VRR frame synchronization, working across the full refresh range up to 288 Hz. All of these features can be conveniently controlled from a dedicated Game Bar. Interestingly, its appearance can be customized to your taste, with three ready-made themes referencing Nintendo, PlayStation, and Xbox consoles. And speaking of Xbox: Dolby Vision Gaming also works on the X11L without any problems.

When gaming in the standard HDR10 format, however, you should be aware of the specific tuning of the brightness curve, which can cause problems during initial setup. Although the TV supports HGiG, configuring everything through the PlayStation or Xbox system menus can be tricky. The screen's algorithms tend to artificially brighten the test checkerboard pattern, making it really hard to hit the correct white clipping point by eye. For HDR10 content to look right, we recommend manually setting the brightness in the console menu to around 2500–3000 nits.