TCL P7K / P79K vs LG QNED93A / QNED90A

When it comes to assessing HDR performance, we need to be clear and straightforward without any marketing fluff: the P7K/P79K is not and never was meant to be a champion in this area. The maximum peak brightness that this panel can generate hovers around just 300 nits. This represents a threshold, a sort of thin red line between what can be considered barely satisfactory HDR signal and what is, in reality, only slightly better than standard dynamic range (SDR), unfortunately leaning towards the latter. Synthetic tests confirmed this harsh reality – our measurements taken during movie sessions showed that the luminance in key bright scenes rarely exceeded 200-250 nits. Therefore, this is not a TV that would allow content created in a wide tonal range to truly shine, and that must be openly acknowledged.

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

Although the number of local dimming zones in the LG QNED93A hasn’t directly translated to noticeably better contrast, it’s hard to deny this model one thing – it’s brighter than its predecessor. In synthetic tests, we recorded values around 1400-1500 nits, and more importantly, these results are reflected in real film scenes. In full-screen sequences flooded with whites or bright lights, the screen was able to maintain high luminance, providing a truly decent amazing HDR effect. Unfortunately, where the TV could show true class, that is in scenes requiring precision, all the magic dissipates. The dimming algorithms we mentioned earlier operate aggressively enough that small, bright objects – like distant lights, stars, or the moon – can almost completely disappear. Just look at the test scenes from the film Pan or Sicario 2 (screens 2 and 4) to see how subtle details are dimmed to the limits of their visibility. It’s a pity because a greater number of zones could theoretically translate to significantly better performance. Fortunately, there are also strong points. The QNED93A performs well in terms of colour gamut coverage, achieving around 96% of the DCI-P3 standard. As a result, colours in films look rich and full, and the image doesn’t lose intensity even in more demanding scenes. So, it can be said that the HDR in this model is solid, although the underdeveloped local dimming algorithms hinder its full potential.

Every reliable assessment of image quality must start with selecting the most optimal, factory preset mode. In the case of the tested P7K/P79K model, the choice was made without hesitation for the "Film" mode. It is the mode that presents an image closest to the intentions of its creators, avoiding both the exaggerated brightness of the 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 without a few stumbles. The most noticeable shortcoming turned out to be the not entirely correctly set white balance. A slight dominance of the blue component gives the image a subtly cool, frosty character, straying from the ideal neutrality that the director intended to show us. The television handles the reproduction of greyscale in the standard dynamic range much better – the gamma curve is almost exemplary. The only slight reservation can be made for the darkest parts of the image, where a delicate deviation from the norm causes a loss of some detail in the shadows. The most significant challenge, however, for the TCL software was interpreting the HDR signal, as 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 mid-tones. Fortunately, most of these imperfections are of a software nature, which can be eliminated. With that thought in mind, we proceeded to the process of professional calibration.

In film mode (more specifically Filmmaker), the colour reproduction in the QNED93A was relatively accurate, although there were some reservations. In SDR content, the white balance leaned towards warmer tones, resulting in a slight yellowing across the entire screen. Gamma, on the other hand, led to a slight lightening of the image, making it look a bit less natural, especially in scenes that required precise shading (this is evident in the comparison photo). This isn't a problem that immediately stands out to every viewer, but more discerning individuals may feel that the image deviates from the intended aesthetic of the filmmakers. In HDR materials, the situation looked a bit different. The white balance here was quite good, ensuring that whites did not take on pink or unwanted green hues. However, the brightness management turned out to be an issue. An analysis of the EOTF curve revealed that at certain moments, the television could be distinctly too dark where it shouldn't be, losing some details and lowering the realism of scenes. This detracted from the HDR effects, which were theoretically meant to be the most impressive. For this reason, we decided to conduct a calibration.

The calibration process turned out to be spot on, especially in the context of standard dynamic range (SDR) content. We successfully managed to eliminate the tendency of the television to showcase cool tones, restoring white to its natural neutrality. Moreover, the precise adjustment allowed us to correct a slight error in the gamma curve, enabling the darkest parts of the image to regain proper depth, without any signs of unnatural brightness. The results are measurable and impressive – in the ColorChecker test, the vast majority of colour reproduction errors fell below the perceptual threshold, achieving a deltaE value of below 2. This is a result that more expensive models would not be ashamed of. Unfortunately, in the case of HDR content, we encounter a wall in the form of the panel's structural limitations. And although we managed to bring the colours into line, the software's specifics mean that the television still adapts brightness in its own way, as evidenced by the persistent, non-standard EOTF curve. To summarise, calibration adds tremendous value, but it is important to be aware that it won't overcome certain physical barriers. The slightly elevated blacks, resulting from the lack of local dimming, and limited peak brightness mean that HDR content won't 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 viewing SDR material.

After professional calibration, the Filmmaker mode in the QNED93A has improved primarily where it matters most in everyday use. We managed to straighten the white balance and eliminate the yellowish tint in SDR content, which is what we watch most often – television, streaming services, or standard quality movies. As a result, the colours look natural and pleasant, making the overall viewing experience significantly more comfortable. In HDR mode, we also made corrections, but here the biggest issue turned out to be the EOTF curve. Although LG provides some leeway in the settings, the television still controls brightness on its own terms. It's clear that the local dimming algorithms are not fully refined and can ruin the viewing experience by dimming parts of the picture at inappropriate moments. Nevertheless, it’s worth opting for calibration of this model, especially the mode intended for everyday viewing.

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

The LG QNED93A turns out to be a very solid television for everyday use. Its image processor performs excellently with upscaling, making even older films or free-to-air television sharper and more detailed. During the screening of 'The Godfather,' it’s clearly visible how upscaling brings out additional details from the image – the characters’ faces and the texture of their clothing look significantly clearer than in the original material.

The digital image processing also deserves praise. The television is equipped with a function that reduces unwanted colour banding and screen irregularities. It works best in the 'Medium' setting – subtly smoothing tonal transitions without overly interfering with the image. This way, the natural film grain is preserved, and the screen does not appear artificially smooth. Perhaps in some scenes, slight colour banding can still be noticed, but in practice, the effect is more advantageous than with a stronger intervention from the algorithm.

The issue of fluidity and sharpness of motion image 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 at the outset defines its capabilities and makes it hard to unequivocally recommend it to enthusiasts of dynamic sports broadcasts. During quick camera movements, the image loses sharpness, and the panel also shows a slight tendency to smudge, 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 decide on the final nature of the motion – from maintaining a fully cinematic, slightly jerky image, to achieving a very smooth, almost theatrical effect. It is a simple yet effective tool that allows one to adjust the viewing experience to their own preferences.

LG QNED93A has been equipped with a 144 Hz panel. This is primarily a nod to gamers, but the fact that higher refresh rates are increasingly appearing in televisions can be viewed positively. In everyday viewing, 120 Hz remains key, and in this regard, the QNED93A performs well. The manufacturer also provides the option to adjust the picture thanks to the TruMotion system – the De-Judder and De-Blur sliders allow you to choose between a cinematic motion feel with visible frames and full smoothing with theatrical motion.

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 set 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 rounded off with 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 effortlessly supports a high refresh rate signal of 120Hz, but at lower resolutions – 1080p and 1440p. This is fantastic news for console owners, who know how rarely games run in native 4K at a full 120 frames per second. The option to choose between higher resolution and doubled smoothness is therefore an incredibly sensible compromise.

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

LG QNED93A is a television that has undoubtedly been designed with gamers in mind. Right from the start, we get a complete package – all four HDMI ports operate in 2.1 standard, so whether we connect a console, a PC, or a receiver, we have full compatibility. This is important because many manufacturers still limit themselves to two ports, and here nothing stands in the way of having maximum capabilities for all the equipment. There’s also an automatic game mode (ALLM), which automatically switches the television to the appropriate settings when the console is turned on, as well as variable refresh rate (VRR). This means the image doesn’t stutter or glitch, even when the frame rate drops – whether in dynamic shooters or during races.

The 144 Hz panel gives an additional advantage in computer games. While 120 Hz is enough for consoles, the QNED93A allows PCs to push even more – every movement, every glance to the side is refreshed faster, which makes a difference especially in e-sports. The manufacturer also considered HDR in games – the television supports HGiG mode, which are guidelines intended to ensure that the lighting effects are exactly as the game developers intended. To top it off, we get Game Bar – a special information bar called up on the screen that shows parameters in real time. You can check the frame rate, active VRR functions, or input lag levels. This solution is useful not only for settings enthusiasts but for anyone who wants to quickly check what mode the television is operating in and whether everything is working as it should.