TCL P89K / TCL P8K vs TCL C6KS / C69KS / Q6CS

The maximum brightness of the TCL P8K peaks at around 300 nits, although in real film scenes the television typically maintains closer to 250 nits. These are values that cannot be considered sufficient to achieve a true HDR effect – they are more aligned with a solid base for SDR content. Therefore, we won’t see spectacular flashes, bursts of light, or moments where the screen actually “blinds” as is the case with more expensive models. The image is consequently a bit flat, and the differences between light and shadow – more symbolic than realistic. Fortunately, TCL has a few aces up its sleeve that save the overall impression. One of these is the coverage of the DCI-P3 colour gamut at around 93-94%. Thanks to an additional QLED layer (PFS LED), colours gain depth and intensity, clearly surpassing standard LCD panels. As a result, while the typical “wow effect” associated with HDR brightness is lacking, the image itself can impress with its richness and vibrant tones, making the film scenes pulse with colour and not appear significantly washed out.

And what about HDR? Here the C6KS performs quite well and – as is becoming the theme of this review – just like in the C6K model. The maximum brightness generated by this television is around 600 nits. In bright scenes, this translates to a really solid, cinematic effect and generally, video materials look good here. However, it's important to keep in mind the specifics of the dimming algorithm in this model. When very small, bright points (e.g. stars) appear on a dark background, the television can quite significantly dim them. The goal is simple: to eliminate blooming and maintain the best possible black. It's a reasonable compromise. Most viewers will definitely appreciate deep, “true black” more than additional microscopic details, the display of which could cause the screen to appear greyed out. Such is the nature of local dimming technology in this price range, and one must be aware of this. It’s also worth noting that the TCL C69KS (C6KS) has an additional PFS coating, which is marketed under the QLED technology slogan. Thanks to this, the colours are saturated and vibrant – our measurements showed that the coverage of a wide colour gamut reaches as much as 92%.

In Filmmaker mode, the TCL P8K revealed certain imperfections in image reproduction from the start. We noticed that the TV had a tendency to slightly brighten scenes – its gamma was somewhat lowered, which made the image appear softly "washed out," lacking depth, as if the contrast had slipped out of control. This was most noticeable in HDR content, where the EOTF brightness curve clearly deviated from reference values. As a result, darker areas of the image looked too gloomy, and brighter ones did not always reach the correct level of luminance. The second noticeable issue was a slight blue overdrive – the TV stubbornly boosted this colour, causing some parts of the image, especially skin tones and reds, to have a slight purple tint. It is not a major flaw, but to a discerning eye – noticeable. Fortunately, most of these errors could be adjusted during calibration. You can see the results of this calibration in the charts and photos below.

In contrast to the more expensive C6K model, in the tested C6KS we don't find an option in the menu labelled as Filmmaker Mode. Is this a reason to cry? Absolutely not. Our tests showed that in practice, in terms of colour reproduction, the lack of this specific label makes virtually no difference. The best available Film/Cinema mode here offers an almost identical picture profile to the aforementioned Filmmaker in the more expensive model. So we get a very similar image, just under a different name. Therefore, if you were wondering whether paying extra for the C6K would give you better colours – the answer is: no, in both cases the base is the same and requires slight adjustments.

After calibration, the TCL P8K revealed a completely different side. It managed to achieve nearly perfect, even reference-level colour reproduction for both SDR and HDR content. The screen no longer had a tendency towards a cool tint, and the white balance was perfectly aligned. The gamma values for SDR materials finally look as they should – the image has the right depth and no longer appears washed out. The only concern that can still be raised about the P8K pertains to its "Chinese" traits, known from most TCL models. The TV still likes to manipulate saturation in HDR content in its own way – sometimes it gently boosts it, other times it smooths it out, making the effect not always fully predictable. Nevertheless, after calibration, the colours look stunning, and their accuracy is truly impressive. In most cases, measurement errors dropped below values of 1–2, which is a performance that much more expensive models would not be ashamed of.

Thanks to the white balance adjustment, the C69KS's tendency to distort colours has been effectively limited, leading to a very good final effect. After calibration, we will no longer see excessive warmth in SDR scenes or overly cool tones in HDR. However, it is worth noting the brightness characteristic. In SDR content, there are hardly any objections – the image looks very good, especially in older films, TV shows, or YouTube materials. Evaluating the television's performance in HDR is much more difficult. Analysis of the EOTF curve suggests correct behaviour, but its practical variant shows certain limitations. The C69KS can overly brighten the smallest elements of the frame, while at other times it can dim the entire scene. Calibration has therefore brought clear benefits in terms of colour, but certain limitations resulting from local dimming and the way it is controlled by the C69KS cannot be avoided, which we also observed in the C6K test.

The TCL P8K performs somewhat weaker when it comes to the fluidity of tonal transitions in lower quality materials. The television does offer a feature to smooth out unwanted bands, but its effectiveness leaves a lot to be desired. Even at the highest setting, it's hard to speak of a real improvement—at times, the effect is even opposite to what was intended, as the feature can introduce small artifacts and unnatural blurring on the screen.

On the other hand, the upscaling, which involves scaling the image to 4K resolution, looks definitely better. The P8K handles this task surprisingly well—HD content, and even SD, is enhanced in an aesthetically pleasing way without excessive loss of sharpness. There are indeed slight “hard” edges typical of this class of equipment, but this can be easily adjusted using the sharpness slider according to personal preferences. The final effect is more than satisfying, especially considering the price range this model is in.

The C69KS handles upscaling quite well. The tested 576p content looks surprisingly decent – a considerable amount of detail is preserved, and the algorithm adds a subtle ‘rounding’ effect to sharp edges, making the image appear more cohesive. However, it doesn't perform as well when it comes to smoothing tonal transitions. The television practically cannot improve them, leaving the image in a rather raw state. With older materials, this can be simply exhausting, as the lack of additional processing highlights all imperfections.

TCL P8K is one of the cheapest televisions offering a 144 Hz refresh rate, which in itself is a significant advantage in this price segment. Thanks to the fast panel, this model can confidently be recommended to both sports fans and gamers – the image is smooth, and the movements of the ball or dynamic actions look natural. However, this does not mean that the P8K is suitable only for sports. On the contrary – it can also maintain the right dynamics in movies without introducing an artificial 'theatrical' effect, as long as the settings are adjusted thoughtfully. The television is equipped with a motion smoother called 'Motion Clarity', which features two sliders: blur reduction and flicker reduction. The first is responsible for smoothing the image by generating additional frames, which increases fluidity but can cause a slight soap opera effect. The second, on the other hand, reduces flicker and improves sharpness in motion, although it may slightly dim the screen. Properly adjusting these two parameters allows for a truly good balance between natural motion and fluidity. The 60 Hz screen is good for dynamic content, though more discerning users will notice that it is not a top-tier panel in terms of motion clarity.

C69KS offers a simplified motion enhancement panel in movies, allowing users to adjust the intensity of the effect using a slider. This makes it easy to tailor the smoothness to personal preferences. It also deserves credit for the ability to utilise higher refresh rates – even though the panel operates natively in 4K at 60 Hz, by lowering the resolution to 1440p, modes of 120 and 144 Hz can be enabled, on both consoles and PC. This sounds like great news, however, in practice, the image at these settings trails exceptionally badly. The effect is so pronounced that the overall experience simply appears mediocre and loses its appeal in everyday use.

Although the TCL P8K is a budget television, it absolutely cannot be said that it is unsuitable for gaming. On the contrary – this screen can pleasantly surprise any gamer. On board, we find two HDMI 2.1 ports, which allow us to effortlessly send a 4K image at 120 Hz. If someone plays on PC, they will also be pleased to know that the television can operate even with a refresh rate of 240 Hz at a lower resolution – a small thing, but it’s appreciated. Additionally, there is a full set of gaming-specific features: automatic game mode, a Game Bar with quick parameter previews, VRR, HGiG, and support for Dolby Vision in games. All of this makes gaming on the P8K a truly enjoyable experience – the image is smooth, the response is quick, and the television works well with next-gen consoles. The TCL P8K shows that a cheap screen doesn't have to mean giving up on fun. Definitely not when it comes to gaming.

If we overlook the smudging and lack of native 4K at 120 Hz, the C69KS is impressive in how well it performs for gaming. You get everything you would expect from a gaming TV: Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), Dolby Vision Gaming mode, and a consistently functioning HGiG. The TV can also operate at 120 or even 144 Hz at lower resolutions, making gameplay on console or PC smoother. Additionally, there's a clear Game Bar that allows you to quickly check key settings while gaming. As a result — despite a few limitations — the C69KS can be a genuinely successful screen for gamers.