TCL RM7L vs Samsung R85H / R86H

TCL RM7L is a bright TV. In our measurements its peak brightness hovered around 1600 nits. That is clearly less than the C7L, which can approach 2600 nits, but in real film scenes the difference between the models is not that large. In less demanding shots with many bright elements, the RM7L can sustain about 1000 nits, and sometimes even a little more, getting close to 1500 nits. It performs worse in dark scenes with small points of light, where their brightness can fall to around 500 nits. This is not random behaviour. The TV intentionally dims fine details to better control the backlight and preserve higher contrast. That comes at the expense of their intensity, but it is typical behaviour for TVs with local dimming in a similar price bracket.

Colour gamut coverage

In HDR not only brightness matters but also colour. And here the RM7L has plenty to show. Colours are highly saturated and a wide colour gamut is one of its major strengths. In our DCI-P3 measurements it reached about 96%, and BT.2020 around 83%. It is worth remembering that on a TV with this kind of backlight the result can vary depending on the scene. On test patterns colours look best, while in films their saturation is sometimes a little lower than on SQD Mini LED or QD-OLED TVs. The construction of the backlight itself is also interesting. The RM7L does not use the classic red, green and blue LED set. TCL used two green LEDs and one blue, with the red produced by a PFS phosphor. This shows up in spectrometer measurements, but it does not have a major impact on the picture. Colours are still rendered correctly.

When it comes to brightness, the R85H performs really respectably. In most of our test scenes the TV reaches around 800 to 900 nits, and with larger bright elements it can exceed 1000 nits. These are not, of course, levels on a par with the pricier Mini-LEDs, but they are more than enough for watching films and TV shows in HDR, and the effect can already be quite noticeable. The problem reappears in more demanding scenes where there is a small bright element on a very dark background. Here the TV can significantly limit its brightness so as not to light up too large a portion of the screen. In our measurements such small highlights fell even to around 200 to 250 nits, so it is clear that a small number of zones combined with the particular behaviour of the algorithm has consequences here. Fortunately, this is not something that disturbs viewing all the time. In typical mixed HDR scenes the R85H looks good and can deliver appropriate image dynamics. It's just that with very small points of light you shouldn't expect an effect as strong as on TVs with many more zones or on OLEDs.

We checked the out-of-the-box colours in Filmmaker Mode, the best picture setting available to the user. TCL has been using it in its TVs for two years, and its aim is to reproduce the image as faithfully as possible in line with the creators' intent. On the RM7L it was indeed the most accurately set mode, although it was not without flaws. The biggest problem was the white balance. Too much red and blue made the image shift towards slightly pink tones. This was visible in both SDR and HDR. On top of that the brightness response was slightly boosted, making the picture appear a little brighter but at the same time less contrasty than it should be.

In Filmmaker mode our R85H sample performed acceptably in SDR, but a few things stood out immediately in the measurements. In the white balance red increased with rising brightness while blue decreased. As a result the brighter parts of the picture had a slightly too warm tint. Gamma only held to the target value at the start. It then gradually fell, which left most of the image a little too bright. The combination of these two effects also showed up in the colours, with errors growing particularly in the brighter and more saturated samples. It did not look bad, but for Filmmaker mode we had expected a bit more accuracy. Interestingly, in HDR our sample fared noticeably better. The white balance was much more even and, over most of the range, the individual components stayed close together. Only in the very brightest areas did red start to be lacking, causing white to shift subtly. The EOTF curve, by contrast, looked very good and followed the target luminance levels across almost the entire range. That does not mean HDR colours were perfect. The Colour Checker still showed some deviations, especially for some of the more saturated hues, but the errors were clearly smaller than in SDR.

Thanks to the fairly extensive calibration menu we were able to correct the vast majority of the previously described issues. The biggest change concerned the white balance. After calibration it now looks very good, so the picture shed its pinkish tint and became much more neutral. The luminance response has also improved. Both the SDR gamma and the HDR EOTF curve are now much closer to the reference values. The picture is no longer unnecessarily brightened, and darker areas look more natural and have greater depth. Better luminance accuracy also affected the colours, which after calibration are noticeably more accurate. Not everything could, however, be set perfectly. With HDR material the RM7L still interprets part of the signal in its own way and does not always follow the reference curve precisely. This is most apparent in some darker scenes, where the TV can either slightly lift the shadows or darken them completely. That is where the earlier impression of a slightly brightened, less contrasty picture came from. Despite this, the calibration delivers a very good result. It removes the most visible errors and, above all, makes the picture much closer to how it should look.

After calibration the R85H shows it has genuinely substantial capabilities in colour reproduction. It performed best in SDR, where the white balance could be brought almost perfectly into line and the gamma stays very close to the target value across most of the range. This also translated into very low errors on the Colour Checker, so there is really little to pick fault with. HDR also shows a clear improvement, although some things can no longer be corrected as well. At the highest brightness levels the character of the backlight begins to make itself felt and the individual components of the white balance start to drift apart. The same applies to the most saturated colours, which do not always land exactly where they should. Despite these limitations the overall image is much more accurate than with the factory settings, and the biggest difference is definitely seen in SDR. There is, however, one thing calibration cannot fix. With heavily saturated elements the colour can slightly bleed onto adjacent bright areas of the image. It is easiest to notice this on white, which can pick up a faint tint of a neighbouring colour. It does not appear in every scene, but when the material is demanding the effect can be visible. This is more a characteristic of the way the RGB backlight works than a matter of picture settings.

Upscaling and digital image processing are not the RM7L's strong suit. TCL has used the MediaTek Pentonic 700 chipset here, designated MT5896, which is not among the best processors when it comes to handling lower-quality source material. The biggest problems appear with heavily compressed content from YouTube or standard broadcast TV. The processor cannot effectively hide posterization and the characteristic banding between tones. The feature intended to smooth these issues does little to help, and can also interfere with the image too much, smoothing, for example, faces or fine textures. For that reason it is best simply not to use it.

Standard upscaling to 4K looks better. Lower-quality content is sufficiently sharp and retains an adequate amount of detail. It is not on a par with the best processors on the market, but for everyday viewing the result is entirely acceptable.

In the R85H image processing is handled by the Micro RGB AI Processor. The name is new, but when it comes to upscaling lower-quality material the TV’s behaviour is very similar to what Samsung has shown before. And that’s not a bad thing, because the manufacturer has dealt with this aspect quite well for years. Lower-resolution content is displayed cleanly, edges do not become excessively soft, and the TV does not try to artificially extract details at any cost. The result is simply well balanced, and with regular broadcasts or older recordings the R85H performs as you would expect from a Samsung in this class. There remains only a minor drawback in the form of overscan, which cannot be completely turned off at the lowest resolutions. A separate matter is the additional processing of weaker sources. The R85H can smooth posterisation and somewhat tidy up heavily compressed footage, but it is worth emphasising that it does this relatively aggressively. At stronger noise reduction settings it begins to remove not only compression artefacts but also fine details and the natural film grain. It is therefore best used only when the material truly needs it.

The RM7L features a 144 Hz VA panel, so from the outset it is well suited to sports, gaming and other fast-paced content. The high refresh rate also gives the motion interpolation more scope, allowing it to generate additional frames. On the RM7L it works well and, with the right settings, can noticeably improve motion smoothness without an excessive soap opera effect.

The R85H has a 144 Hz panel, so motion is really smooth here. Just bear in mind that the extra hertz above 120 are mainly used when connected to a PC, so in this category we don't treat them as any particular advantage. For films and TV, what's more important is that the panel is fast enough to provide access to an advanced motion-smoothing feature, "Motion Clarity", which lets you set motion anywhere from more film-like to very smooth. The panel's response time is a bit worse. Because it's a VA panel, fast-moving objects can leave a slight trail. On bright backgrounds this isn't very noticeable, but the darker the scene, the more pronounced the smearing becomes. This is a typical trait of this type of panel and it's easiest to notice in dark shots.

The RM7L earns almost nothing but praise when it comes to features for gamers. The TV supports ALLM, VRR and Dolby Vision Gaming and works properly with HGiG, so it’s hard to point to any major omissions in that regard. In practice this means automatic switching to a low-latency mode, smoother motion at variable frame rates and accurate brightness reproduction in HDR games. There’s also a very useful Game Bar. From it you can quickly check frame rate, VRR status, signal format or aspect ratio, and change the key settings without leaving the game. TCL has also added a few extra options, such as a crosshair overlay and brightening of dark image areas, which can be handy in some titles. The biggest drawback stems from the use of the Pentonic 700 processor. Only two of the four HDMI ports support the full HDMI 2.1 standard. That won’t matter much with a single console, but if you connect two consoles and a PC you may run out of ports, especially since one of those ports may be needed for eARC and a soundbar.

Samsung has been steadily expanding its gaming features for several years, and the R85H really doesn't miss anything important here. The TV supports 4K at 120 Hz, VRR and ALLM, so we can easily take advantage of the PlayStation 5 or Xbox Series X. HGiG also works correctly, so with HDR properly set on the console, games retain the correct brightness and we don't unnecessarily lose detail in the brightest parts of the picture. The only major omission is Dolby Vision Gaming, which Samsung does not support on any of its TVs. The Game Bar is also very useful — a handy menu you can bring up without leaving the game. We can quickly check the frame rate, VRR status or change key picture settings. Samsung also adds a few less obvious features, such as the ability to change the aspect ratio and Game Motion Plus, which can further smooth games running at 30 or 60 frames per second. Of course this comes at the cost of higher input lag (around 55 ms), but for slower-paced titles it may be an interesting addition for some people.