TCL C8K vs Samsung M80H

TCL C8K is a really bright television. In synthetic conditions – that is, during tests with brightness charts – it was able to achieve even 3500 nits peak brightness in movie mode. That's an impressive result and brings the C8K close to the market leaders, at least when it comes to panel brightness. More importantly – these aren't just numbers on paper. In films with a lot of bright scenes, such as Life of Pi or The Meg, the brightness clearly exceeds 1000 nits, providing a true sense of HDR effect. The picture in those moments looks very dynamic, colors are saturated thanks to excellent coverage of the color palette, and the lights are – spot on and intense. Exactly how it should be.

However, this doesn’t mean that everything is perfect. Just like in contrast tests, here too, in more demanding scenes, compromises appear. In sequences with very fine light elements – such as stars in the night sky or reflections in dark rooms – the local dimming algorithm can… get confused. Instead of bringing those details up, the television sometimes decides to dim them significantly – down to around 300 nits – to maintain deep blacks. On one hand, this is quite a sensible approach (better deep black than a grey/navy blue screen), but on the other – there may be moments when certain elements of the picture become difficult to see or even disappear into darkness.

TEST UPDATE (20/08/2025): The brightness control algorithm in this model is quite problematic – attempting to calibrate the picture so that it doesn’t drastically overexpose the brightest scenes results in unnatural shifts: improvement in one part of the image results in deterioration in another. The television may achieve slightly higher readings in brightness measurements, but in practice, this comes with a heavily overexposed image that looks very unnatural!

For the record, we provide brightness values without this adjustment:

1. 1463 nits

2. 640 nits

3. 1368 nits

4. 468 nits

5. 1025 nits

The M80H is not one of the brightest TVs. Its peak brightness is around 350 nits, and we saw similar results across most of our test scenes. That's not enough to achieve truly striking HDR, as bright highlights lack punch and the overall image is a little too dim. In practice, HDR on the M80H feels more like well-presented SDR than noticeably more dynamic material with a wide brightness range. The picture can still look fine, but it's hard to point to strong highlights, clearly bright light sources, or an effect that immediately sets HDR apart from ordinary content.

Colours

One of the M80H's stronger points is its colours. The TV uses a PFS filter in the backlight, which lets it display a much wider colour gamut than a standard LCD without filters. Our measurements confirm this – the M80H covers about 96% of the DCI-P3 gamut and 72% of BT.2020. Those are very good results, which allow colours to be richly saturated. Samsung's positioning here is interesting. The M80H isn't part of the QLED family, even though in terms of colour it is practically on par with models carrying that badge. From an image quality point of view that doesn't make much difference – the colours are simply good.

In the C8K, a new picture mode has appeared: Filmmaker Mode. This is something we've known for years from televisions of other brands – a mode designed to deliver the director's vision as faithfully as possible, without unnecessary image enhancements. Unfortunately, at TCL, it seems to still be in the "to be refined" stage. Right from the first glance, the screen appears too warm – the image veers into reds, which may not appeal to everyone. The white balance was markedly skewed – the screen looked distinctly warm, and the red colour dominated almost every scene. There was a lack of blue, which led to an unpleasant yellowing and distortion of the image. But that’s not all. Regardless of whether we were watching regular TV, YouTube, or HDR films – the television had a clear tendency to excessively brighten the image. In tests of gamma curves and EOTF, the lines strayed instead of adhering to the standard, resulting in an overly bright and less contrasting image. Additionally, in colour reproduction tests, significant deviations were noticeable – on the colour wheel, some points were actually "drifting away." It must be said plainly: Filmmaker Mode in the C8K, in its current form, is not very cinematic.

Filmmaker Mode is pretty well set up out of the box, though it’s not perfect. In SDR material the most noticeable issue is an excess of red in the white balance, which makes the picture look a little warmer than it should. HDR content has a similar character. As for brightness response, in SDR the gamma stays close to the target value across most of the range. Small deviations are mainly visible in darker areas, which are in places slightly too dim. In HDR the very darkest details are slightly lifted, while from around 65% brightness the image starts to be gently darkened. This largely results from the way the TV controls its brightness. Overall, Filmmaker Mode looks good straight out of the box, but the picture can still be improved.

After professional calibration, the TCL C8K has made a huge leap forward. In SDR content, the white balance has been almost perfectly set – the screen has finally stopped being too warm and has taken on a neutral character. The gamma curve, which is responsible for how brightness is represented, now looks very good – the image is more coherent and realistic. In HDR content, we also improved the white balance – within the limits of what the television itself allows. Unfortunately, the C8K still interprets brightness management a bit "in its own way." When we look at the EOTF chart in films, it’s clear that the television brightens entire scenes more than it should. Before calibration, this effect was quite bothersome – now the situation is much better, although it still falls a bit short of perfection. This, however, is a limitation of the device itself, which – despite our efforts – does not allow us to fully tame its nature.

After calibration the M80H performs very well, especially with everyday SDR content. Regular TV, YouTube and movies watched without HDR can look very good on it. After adjusting the white balance the errors are small, though you can sometimes still see the TV tends to push the most saturated reds too far. You can also improve the picture in HDR and correct its main faults, but it doesn't reach the level of more expensive models. Samsung quite heavily restricts colour adjustment options in HDR, so in many areas we have to accept what the TV offers out of the box. Calibration can improve some parameters, but we can't change the M80H's overall picture character.

How does the TCL C8K handle lower quality materials? One could say: fairly well, though without much enthusiasm. The television offers a tonal transition enhancement feature designed to smooth out unwanted gradients. In practice, there's a slight improvement visible, but it's not at a level that eliminates all imperfections. The feature subtly softens harsh transitions, but it doesn't work miracles. Film grain isn't completely suppressed, and subtle banding on grey backgrounds can still be noticeable. But maybe that's for the best? – at least the image doesn't lose its texture or depth, as is often the case with televisions that overdo digital processing. When it comes to upscaling, which is enhancing picture quality from lower resolutions, the C8K performs quite well. The image is sharp, and details – though sometimes a bit softened – remain discernible. However, it's not on par with the best picture processors from the competition. On the plus side, there's no issues with overscan, which is the artificial cropping of the image that can still surprise in some models from other brands.

Although the M80H is positioned fairly low in Samsung’s line-up, the maker equipped it with one of its stronger processors, the NQ4 AI Gen2. The same chipset is used in Neo QLED TVs and the higher‑ranked S85H OLED. That’s good news, because the processor handles improving weaker sources really well. Upscaling is its strongest suit. Low‑resolution material is displayed properly and edges don’t look overly jagged. The TV won’t of course create details that aren’t in the source, but regular broadcast TV and older recordings look decent on it. One drawback is overscan, i.e. edge cropping, which can’t be completely turned off. The feature that smooths tonal transitions, the so‑called noise reduction, also works well. The processor can effectively reduce visible signs of heavy compression, but it doesn’t do so without side effects. At higher settings it can smooth the picture too much, remove some fine detail and even eliminate film grain. For that reason we recommend using this feature mainly for material that genuinely suffers from heavy compression and posterisation.

If you're planning a weekend with the Champions League or a marathon of F1 racing – the TCL C8K won't let you down. The television is equipped with a 144 Hz panel, so it should inherently handle fast motion well. And indeed – it performs very well. The fluidity of motion is at a very good level here, and the "Motion Clarity" feature with two sliders (blur reduction and flicker reduction) allows you to easily adjust the effect to your own preferences. Want to slightly smooth things out – no worries. Prefer a cinematic look – no problem.

The M80H performs very well for watching sport and for gaming. The TV is equipped with a panel offering a refresh rate of up to 144 Hz at 4K, and when the resolution is reduced to Full HD it can handle up to 240 Hz. That second option will be used mainly by PC gamers.

The panel also handles 120 Hz content well, which matters especially for console gaming. A high refresh rate is also useful when watching sport, and motion blur is relatively low. That's important because VA panels are not known for the best performance in this area. On the M80H, fast-moving objects do not produce a very noticeable blur.

TCL C8K offers practically everything we could expect from a screen for gamers. It has variable refresh rate (VRR), automatic game mode (ALLM), Dolby Vision in games, and a well-functioning implementation of HGiG, which helps preserve the creators' intent in HDR titles. The TV also supports 120 Hz in lower resolutions without any problems, and it can even display a staggering 288 Hz in Full HD – a figure that will surely appeal to fans of dynamic shooters and sports games on PC.

On board, we also find the GameBar – a graphical interface that somewhat resembles an elongated Nintendo Switch console. Thanks to this, we gain quick access to information about the current game mode, frame count, HDR format, and other little details that really make life easier for the gamer. We obviously couldn’t resist and ran a couple of races in Forza Horizon on the C8K – and we must admit, it looked and worked really well.

However, there is a slight drawback – in such a fast and clearly gaming-oriented device, it's a bit unfortunate that the manufacturer opted for the implementation of only two HDMI 2.1 ports. For some users, who use several next-gen consoles and, for example, a soundbar with eARC, this could be a limitation that’s hard to overcome.

The M80H could be a very good choice for gamers on a slightly smaller budget. In terms of features it offers pretty much the same as Samsung’s much more expensive TVs. All three HDMI inputs support HDMI 2.1, so even if one is taken by a soundbar connected via eARC there’s still room for a PC and consoles. There’s also VRR up to 144 Hz in 4K and up to 240 Hz in Full HD. Samsung has correctly implemented HGiG as well, so after performing HDR calibration on the console games are properly matched to the screen’s capabilities. That won’t make the M80H any brighter, but at least it won’t unnecessarily wash out the brightest parts of the image. On top of that there’s a Game Bar for quick access to key settings and a Gaming Hub that lets you play in the cloud without a console. The M80H also includes Game Motion Plus, which generates extra frames and improves the smoothness of games running at 30 or 60 fps. Input lag then increases to around 59 ms, but is still about one third of what you’d see with typical motion smoothing on other manufacturers’ TVs. We wouldn’t really recommend it for online multiplayer, but it can work very well in slower‑paced titles.