TCL P7K / P79K vs Hisense E8Q

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%.

Since the E8Q is a twin of the U7Q, it’s no surprise that the quality of the HDR effect is almost identical. On paper, it looks promising – a peak brightness of 800 nits can impress in many scenes. Fragments like the flashes of light in “The Meg” or shots of the sun in “Life of Pi” can indeed evoke a “wow” effect. But the longer we watch, the more we notice the limitations. The problem arises when small, bright details are supposed to be displayed on a dark background. In such situations, the dimming algorithms try to preserve contrast but end up dimming what should shine the brightest. Instead of dazzling details, we get almost invisible points of light. This is typical for Mini-LED in this price segment and is not surprising – but it’s worth knowing that the HDR effect won't always be fully preserved. Fortunately, the color reproduction offers reasons to be satisfied. A coverage of the DCI-P3 color gamut at around 94% is a very good result, and the applied quantum dot layer (more specifically, PFS) does its job – colors are saturated and vibrant, especially with 4K content.

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.

Testing the Hisense E8Q in Filmmaker mode, we were hoping for a neutral image close to the director's vision. Unfortunately - although on paper it doesn't look bad (the color reproduction errors are not significant), in practice the image feels somewhat unnatural. The reason? Too strong an increase in blue and a lack of red in the white balance. The effect? The scenes look cool, and the white appears slightly bluish. Alongside the U7Q model, we also noticed a specific approach to brightness management here. The brightness reproduction curve for HDR content (EOTF) shows that the TV can significantly dim small, bright elements of the screen to maintain contrast - but sometimes it goes too far. On the other hand, it can excessively brighten larger, very bright parts, which disrupts tonal balance. This is a compromise that may not suit everyone – especially if you want an as faithful image as possible right out of the box.

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.

The calibration of the Movie mode brought really good results, especially regarding SDR content. The white balance was successfully adjusted, which gave the image a natural look – it appeared almost reference-level. The colors were well-saturated, and the overall perception of the content improved significantly. Unfortunately, when we moved to HDR materials, the well-known problems from the U7Q model returned. The TV still tends to “do things its own way,” which is evident from the analysis of the EOTF brightness characteristic – despite calibration, the E8Q still dimmed small details in the shadows, while the bright areas of the screen could sometimes be excessively boosted. In practice, this means that in darker scenes, some of the tiniest details could simply disappear. Although it must be admitted that the entire calibration process brought a lot of good, not everything can be circumvented – even with the use of professional tools. The E8Q can impress with its picture, but in HDR content, its design limitations become noticeable, and it is worth keeping this in mind.

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.

In the case of older materials with lower quality, a gentle smoothing of tonal transitions is often useful. The Hisense E8Q, like the U7Q, has the "Smooth and Gradient Picture" feature, but unfortunately, its effectiveness leaves much to be desired. The “Low” setting is almost imperceptible in operation, while higher settings simply blur details instead of improving transitions. The good news is that the feature does not compromise the film grain, which allows it to maintain the image structure. On the plus side, the scaling is commendable. The television can fairly sensibly transform older content to a higher resolution—without artificially emphasizing contours or excessive sharpening. Though it does not match the best models in this category, it performs quite well for its class.

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.

Like the U7Q, the E8Q model is a fast television designed for dynamic content. It supports 144 Hz refresh rates in 4K resolution, and if for some reason someone is still gaming in Full HD, it can achieve even 240 Hz. This is a significant advantage, especially for PC users looking for maximum fluidity. In everyday use, the television performs very well. The "Ultra Motion Smoothness" mode provides us with two sliders, allowing for personalized image settings – whether it’s more cinematic with preserved film frames or heavily smoothed, almost "series-like." It’s good that the manufacturer gives a choice here instead of imposing one style. On sports materials, live broadcasts, or in games – motion appears clean and stable. Sure, it’s not at the level of OLEDs, but for this price range, the E8Q performs really well.

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.

The Hisense E8Q does not hide its gaming pedigree. The specification alone reveals that we are dealing with a television that will work great as a gaming screen. Variable Refresh Rate (VRR)? Yes. Automatic low latency mode (ALLM)? It's there too. Additionally, there is impressive refreshment – 120 Hz in 4K or even 240 Hz in Full HD. Such a set is rare in this price segment. Everything works smoothly and without major surprises. The only missing element – like in the U7Q – remains support for HGiG. It's a pity, because this feature makes it easier to match the brightness curve to the capabilities of a particular television, improving visual consistency with the intentions of HDR game creators. Without it, one has to manually tweak the settings, which does not always yield a satisfying result.