TCL P7K / P79K vs Samsung U8000F (VA)

When evaluating the HDR effect, we must make it clear and without marketing embellishment: the P7K/P79K is not and was never meant to be a master in this field. The maximum peak brightness that this panel can generate is only around 300 nits. This is a borderline value, a sort of thin red line between what can be considered a barely satisfactory HDR signal and what is really not much different from standard dynamic range (SDR), unfortunately leaning towards the latter. Synthetic tests found brutal confirmation in reality – our measurements taken during movie screenings showed that luminance in key bright parts of the content rarely exceeded the threshold of 200-250 nits. Therefore, this is not a television that would allow content produced in a wide tonal range to truly shine, and we must openly acknowledge that.

Unfortunately, the issue of color reproduction is presented equally restrained. Although the manufacturer positions this model in the "QLED" family, thanks to the use of a PFS LED filter, the results do not match the heightened expectations. The coverage of the wide DCI-P3 color gamut is only 86%. Compared to the market, this is at best an average result, as most devices that employ additional layers to expand the color spectrum easily achieve values at a minimum level of 90-92%.

While the U8000F with a VA panel can still be praised for decent blacks, there are no longer any reasons to be impressed regarding brightness – especially in HDR scenes. The television reaches a maximum of just under 250 nits, which is simply too little to talk about any impressive light effects. Bright elements come off as pale, and scenes that should shine look rather flat. An interesting situation was observed during the test of a scene from the movie Sicario 2 – the screen noticeably darkened, as if the television were trying to hide its limitations in displaying blacks. One might get the impression that the device artificially darkens the image to improve contrast, but in practice, the effect doesn't make much of a difference, other than that we see less on the screen. Additionally, there's the issue of colors – the U8000F does not support a wide color gamut, so don't expect vibrant, saturated shades known from better models. The HDR image here resembles slightly brightened SDR and… maybe that’s even a good thing. For this model, it's not worth setting expectations for cinematic experiences – it's better to treat HDR as a modest addition.

Every reliable image quality assessment must begin by selecting the most optimal factory mode. In the case of the tested model P7K/P79K, the choice was confidently made for the "Film" mode. It is this mode that presents an image closest to the creators' intentions, avoiding both the exaggerated brightness of dynamic mode and the excessive dimming known from eco settings. And it must be admitted that, for a device in this price range, the factory calibration is surprisingly decent, although it is not free from a few stumbles. The most noticeable flaw turned out to be an imperfectly adjusted white balance. A slight dominance of the blue component gives the image a subtly cool, chilly character, thus deviating from the exemplary neutrality that the director wanted to show us. The television performs much better in reproducing the grayscale in a standard dynamic range – the gamma curve is executed almost perfectly. A minor reservation can only be made for the darkest parts of the image, where a slight deviation from the norm causes a loss of some detail in the shadows. The most serious challenge for TCL's software, however, was the interpretation of the HDR signal, which is illustrated by the EOTF curve. The television follows its own, rather free path here – the darkest details are disproportionately brightened, followed by a noticeable slowdown in brightness increase for midtones. Fortunately, most of these imperfections are software-related issues that can be eliminated. With this thought in mind, we proceeded to the professional calibration process.

The Samsung U8000F has been tested by us in the best picture mode available out of the box – namely, Filmmaker Mode. This profile is supposed to provide a neutral, cinematic image, free of unnecessary enhancements and artificial beautifications. In the case of SDR content – mainly in HD or SD resolution – the television performed surprisingly well right out of the box. The only noticeable imperfection was brightness management. The gamma chart showed some deviations – slight brightening or dimming of certain tones – but in practice, it did not significantly affect the viewing experience. For a television in this segment, it performs quite well.

However, the situation is considerably weaker in HDR mode. Although white balance was still acceptable, color errors were very pronounced. In the Color Checker test, almost every sample was outside the target point, and the image itself looked unnatural – colors were shifted, sometimes too cool, at other times simply dull and lifeless. The main problem lies in the hardware limitations – the U8000F does not support the wide color gamut of DCI-P3, so it is physically unable to reproduce the colors anticipated by the HDR standard. And unfortunately, this is evident in almost every more demanding scene.

The calibration process turned out to be a home run, especially in the context of standard dynamic range (SDR) content. We successfully managed to eliminate the TV's tendency to emphasize cool tones, restoring the whites to their natural neutrality. Furthermore, precise adjustments allowed us to correct a slight error in the gamma curve, so the darkest areas of the image regained their proper depth, without a trace of unnatural brightening. The effects are measurable and impressive – in the ColorChecker test, the vast majority of color reproduction errors fell below the perceptual threshold, achieving a deltaE value below 2. This is a result that would not shame much more expensive constructions. Unfortunately, in the case of HDR content, we hit a wall in the form of the inherent limitations of the panel itself. And although we managed to bring the colors in line, the software's specifics mean that the TV still adapts brightness in its own way, as evidenced by the persistent, non-standard EOTF curve. In summary, calibration brings tremendous added value, but one must be aware that it cannot overcome certain physical barriers. A slight boost in black levels, resulting from the lack of local dimming, and limited peak brightness mean that HDR content will not always be able to showcase its full potential. This is simply not the main task of this display; its true strength, especially after professional tuning, lies in the viewing of SDR materials.

Right out of the box, the U8000F offered quite a decent picture in SDR for its price range. However, we managed to slightly enhance it – we reduced a subtle purple tint and improved the gamma characteristics, giving it a more natural curve. Despite these adjustments, the TV still tends to brighten the brightest details a bit too aggressively – the gamma graph shows a clear dip that cannot be fully corrected.

On the other hand, in HDR mode, it is noticeably weaker. It's hard to talk about any significant improvement here – despite attempts to tweak the settings, the picture still presents considerable color errors. A Delta E exceeding 7 means noticeable deviations that couldn't be effectively reduced. Unfortunately, this is a limitation of the design itself – the U8000F was simply not designed for serious HDR. In everyday SDR viewing, it performs quite well, but when it comes to HDR content... it's best not to have too high expectations.

After a series of harsh evaluations, fortunately, the time comes for praise, and this is due to the TCL AiPQ image processor for its work in digital processing and content scaling. It should be noted right away that we are not talking about the level known from flagship designs; nevertheless, in the price segment represented by the P7K/P79K, the results achieved are more than solid. The feature that smooths tonal transitions performs particularly well, effectively eliminating posterization, which are the characteristic bands often visible in materials with higher compression, such as from the YouTube service. The algorithm can elegantly remove unwanted gradients, which ultimately looks really good. The television also competently handles upscaling, which is the task of raising low-resolution materials to 4K standard. The output image, although it may seem a bit too sharp out of the box, fortunately, is not a problem. The software allows for easy adjustment of this parameter using a sharpness slider, so the final appearance can be easily tailored to personal preferences.

When it comes to how the Samsung U8000F handles lower quality materials, we must admit that Samsung has made progress compared to its predecessor from last year – the DU7192 model, which theoretically occupies the same position in the lineup. This year's model is equipped with a feature for improving the fluidity of tonal transitions, which has been implemented much better than last year. Yes, the TV still uses quite strong algorithms that can distort details or remove film grain, but despite that – it can be confidently said that it works effectively. However, not everything went perfectly. The U8000F has noticeable issues with slight image stuttering when watching very old content in very low resolution. If someone plans to play their old VHS tape, they should be prepared for the image to appear slightly "choppy."

The issue of fluidity and sharpness of the image in motion is inextricably linked to the fundamental parameter of the panel, and in the case of the TCL P7K/P79K, we are dealing with a panel that has a native refresh rate of 60 Hz. This specification already defines its capabilities and makes it difficult to unequivocally recommend it to enthusiasts of dynamic sports broadcasts. During rapid camera movements, the image loses sharpness, and the panel itself also shows a slight tendency to blur, which may be noticeable to more sensitive viewers. Fortunately, not everything in this aspect has been left to chance. The manufacturer has implemented a simple motion smoothing system, which is primarily used in film materials recorded at 24 or 30 frames per second. Thanks to a dedicated slider, the user can independently decide on the final character of the motion – from a fully cinematic, slightly juddery image to achieving a very smooth, almost theatrical effect. It is a simple yet effective tool that allows users to tailor the viewing experience to their own preferences.

The Samsung U8000F is equipped with a 60 Hz panel, so right from the start, it's clear that we shouldn't expect miracles. This is simply standard in this class – sufficient for everyday viewing but without any frills. The TV offers one motion enhancement slider – a feature called "Motion Blur Reduction," which allows us to adjust the smoothness of the image in movies. Higher settings give a more "theatrical" and smoothed effect, while lower settings help maintain the original character of the film with a slight 24p effect. An interesting feature is "Clear Motion LED," which is a BFI mode – inserting black frames between image frames to improve motion sharpness. However, in practice, the screen flickers heavily when it's activated, and it should be treated more as an experiment than something that genuinely improves gaming comfort.

Although on paper the native 4K@60Hz matrix might suggest that the TCL P7K/P79K is not a TV tailored for gamers, the reality turns out to be surprisingly different. On the contrary, the manufacturer has ensured a rich package of features that make it a very friendly companion for next-generation consoles. Onboard, we find key technologies such as ALLM, which provides automatic switching to low-latency mode, and VRR, or variable refresh rate, which eliminates screen tearing. The list is completed by support for Dolby Vision Gaming and a simple yet functional Game Bar. However, the real and extremely pleasant surprise is something else. It turns out that the TV easily supports high refresh rate signals of 120 Hz, but at lower resolutions – 1080p and 1440p. This is fantastic news for console owners who know full well how rarely games run in native 4K at a full 120 frames per second. The ability to choose between higher resolution and doubled smoothness is therefore an extremely sensible compromise.

In summary, although the P7K/P79K may not be the target screen for the most avid tournament gamers, it offers a package of options for the casual or occasional console user that is hard to find among many competitors at this price point.

Samsung U8000F offers a basic set of features for gamers, which nonetheless may be sufficient for less demanding users. It has an automatic game mode – when a game is launched on the console, the TV automatically switches to low latency mode, significantly improving response time. It also includes a VRR feature, or variable refresh rate, which operates in the range of 48 to 60 Hz. This means that both Xbox and PS5 will not produce a "tearing" effect on the screen – as long as we stay within this range.

And unfortunately, that's about it when it comes to advantages. Additions like Game Bar or higher refresh rates are reserved for higher models of Samsung from the 2025 line. In theory, the TV also supports the HGiG function, which should adjust the HDR image to the intentions of game developers. Unfortunately – even though this feature appears in brochures and marketing materials – its configuration on the Xbox console turned out to be... impossible in practice.