Compare Sony X85L vs TCL P7K / P79K

Sony X85L is a model from 2023 that will continue to be offered in 2024 by the Japanese manufacturer. Its biggest advantage is the Google TV system. It currently provides the greatest access to applications, so we don't have to fear that any of our favorite apps will be missing. The intuitive interface and voice control feature via Google Assistant make daily use of the television convenient and modern. In terms of picture quality, Sony X85L performs well. Thanks to local dimming (albeit with a very average number of zones), black looks really decent. Additionally, its quite high brightness allows for comfortable TV viewing during the day, even in well-lit rooms. Moreover, the television offers the ability to record programs from built-in tuners, which is a great convenience for those wanting to control what and when they watch. In terms of motion fluidity, the X85L also does not disappoint. The 120 Hz panel and Motionflow system provide smooth display of dynamic scenes, pleasing both movie buffs and sports fans. The TV is also equipped with a range of features for gamers, including VRR, Game Bar, and G-Sync support, making it an attractive choice for gaming enthusiasts. Of course, the television is not without its drawbacks. The lack of HGiG support and high input lag in Dolby Vision mode can be disappointing for more demanding gamers. Additionally, the compromise between font readability and image fluidity when connected to a PC may not appeal to everyone. Nevertheless, Sony X85L is decent equipment, particularly worth noting if it can be purchased on promotion.

The time has come to gather all observations. The TCL P7K / P79K is a television that cleverly juggles compromises, offering significantly more than we could expect in its price range. Its undeniable advantage is the VA panel, guaranteeing deep blacks and high contrast, and a surprisingly rich package for gamers (with VRR and 120 Hz support at lower resolutions) makes it a phenomenal choice for console owners. The whole package is tied together by the functional Google TV system. Of course, low peak brightness means that HDR content lacks spectacular highlights, and the TV's performance in sunlit rooms is limited. And while at its relatively low price, the P7K / P79K is quite a decent option, its biggest competitor turns out to be… its more refined sibling, the P8K. Often FOR a small extra charge, we get a device a class higher – with a native 4K 144 Hz panel, significantly better audio system, and generally higher build quality, which is reflected in its much higher rating on our portal. Therefore, the final verdict must be as follows: if your budget is absolutely non-negotiable, the P7K / P79K will be a good and cost-effective choice. However, if you can afford to add a small amount, the P8K model will offer significantly more and will ultimately be a more satisfying investment.

The Sony X85L TV is equipped with a VA panel, which in itself offers quite good contrast. Additionally, this model features local dimming technology – in the 55-inch version, it includes 24 zones. Although this number is not impressive, it naturally increases with the size of the TV. The contrast in the X85L is good, though not the best, especially in comparison to other TVs also equipped with advanced local dimming technology. Results at the level of 8000:1 are satisfactory, but they appear average against the competition. In some cases, such as the third scene from the movie Arrival, the contrast is promising and performs quite well. This is thanks to the very good dimming algorithm that Sony has been using in its TVs for years. Unfortunately, due to the limited number of local dimming zones, the TV suffers from noticeable blooming, which can be seen, for example, in scenes with the helicopter from the movie Sicario 2.

In the discussion about image quality, the conversation almost always starts with the issue of black depth and contrast, which are parameters defining the plasticity and realism of the observed world. And here, the TCL P7k/P79k immediately lays its strongest asset on the table – a VA-type panel. It is its construction that makes the native relationship between the brightest and darkest parts of the image more than satisfactory, especially in the context of the price segment that this model represents. In the majority of scenes, the achieved black has a noble depth, which allows for building an engaging viewer experience. To illustrate the scale, it is worth mentioning that competitive constructions based on IPS panels often offer results that are even four or sometimes five times lower, which constitutes a chasm in direct comparison. Of course, entering the territory of models oriented towards affordability, we must be aware of certain compromises. In the discussed television, we will not find an advanced local dimming system that could further enhance the impression of contrast. However, the absence of this feature is fully understandable and constitutes a logical consequence of positioning the product in the market – this technology in TCL's portfolio for 2025 has been reserved for higher-positioned, more prestigious series marked with the letter "C".

The Sony X85L TV offers solid HDR performance with a brightness level of 750 nits, which is sufficient to enjoy vivid effects. In scenes of moderate difficulty, such as the first, third, or fifth test scenes, a brightness of around 600 nits allows one to fully experience the HDR effect. Unfortunately, in more demanding segments, such as the scene from the movie Sicario 2, the TV shows its limitations. Drops in brightness to 250 nits make the HDR effect lose its impressive quality and resemble regular SDR instead. Nevertheless, it is worth highlighting the very good coverage of the DCI-P3 color palette at 95%, which definitely deserves praise and positively affects the overall image quality.

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%.

The Sony X85L television was tested in IMAX Enhanced mode, which, although associated with world-class cinema, does not guarantee an image that aligns with the director's vision. The main issue is the white balance – there is a noticeable strong dominance of blue color and significant lack of red. As a result, the image becomes unnaturally cool and appears artificial. The color reproduction errors were confirmed by the Colour Checker test, which showed significant discrepancies – colors were "scattered" like shots from a rifle, and only a few samples hit the target values. This clearly shows that the precision of color reproduction leaves much to be desired.

The brightness of the image is one of the positive features of the TV. The gamma for HD content is at an acceptable level, although there are minor errors, but generally, it is quite good. However, the brightness characteristics for 4K materials remain an issue, controlled by the EOTF curve. It is evident that very small, bright elements of the image are too dim, which is a result of the limited number of dimming zones due to the design of the television.

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.

Thanks to the use of calibration tools offered by Sony X85L, the image quality has been significantly improved. After calibration, the white balance for HD content is much more stable, making colors look more natural and the image gains authenticity. Although it is not perfect, these changes allow viewers to enjoy a more realistic representation of colors, eliminating the earlier cool tone. The gamma, which already performed decently, has been adjusted to an even better version. As a result, tonal transitions and brightness are more consistent, positively affecting the depth and detail of the image.

As for 4K content, despite efforts, the white balance still struggles with a deficiency of red, which can result in overly warm colors in some scenes. Synthetic tests showed that the EOTF curve in HDR is quite stable, with a slight boost in mid-bright scenes. However, in real film materials, the TV can still be too bright with fine, light details, which is a result of the limitations of large local dimming technology.

Nonetheless, calibration has brought significant benefits, particularly in color accuracy, improving overall image quality and providing a more natural and cohesive directorial vision.

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 fluidity of tonal transitions in the Sony X85L is at a good level – the color gradation is smooth, even in more demanding areas, which makes the perception of scenes positive and natural. The biggest problems occur in the shadow areas, where subtle color blends may be visible. Nevertheless, the television performs well enough that most viewers should not notice these minor imperfections.

The issue of fluidity in tonal transitions, or popular grading, is another area where the P7K / P79K evokes mixed feelings and surprises with its dual nature. If we were to evaluate solely its ability to render smooth color gradients, we would undoubtedly give it a solid score of 8/10. Unfortunately, this positive image is marred by the use of very aggressive and unsightly dithering. This artifact is particularly noticeable on demanding test patterns – such as the one depicting an actor submerged in red water – where a rough, unnatural texture appears on uniform color surfaces, revealing the digital nature of the image. This is particularly disappointing as it is not a new issue. It seems to be a sort of legacy from previous generations of budget TCL models, which is a shame because it constitutes a flaw on what is essentially a quite competent image and is a mistake that could have been avoided.

In terms of smoothing tonal transitions, the Sony X85L television does not offer any dedicated enhancement options, which is a downside. On the other hand, image scaling performs quite well – the television adds a bit of artificial sharpness, which can make details such as tree branches more pronounced, although sometimes with noticeable jaggedness. This type of effect may appeal to some viewers who prefer a more detailed image.

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.

The Sony X85L, equipped with a 120 Hz panel, will meet the expectations of a wide range of users – from sports and gaming fans to movie buffs. Movie enthusiasts will surely appreciate the presence of one of the best motion smoothing systems, Motionflow. This system offers adjustment via smoothness and clarity sliders – smoothness is responsible for motion fluidity, eliminating stutter, while clarity enhances the sharpness of fast scenes, reducing blur.

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.

Sony X85L offers quite a solid set of features for gamers, making it an attractive choice for gaming enthusiasts. First and foremost, the TV has a 120 Hz panel, translating to smooth and dynamic image display, ideal for both fast-paced action games and more demanding sports titles. It is equipped with two HDMI 2.1 ports with full bandwidth of 48 Gb/s, allowing for the full utilization of next-gen console capabilities. Additionally, the Sony X85L supports VRR (Variable Refresh Rate) technology, which helps reduce stuttering and artifacts during gameplay, providing a fluid experience. The TV also supports G-Sync, which is particularly beneficial for gamers using NVIDIA graphics cards, allowing for screen refresh rate synchronization with GPU performance, eliminating the tearing effect. It is worth mentioning the Game Bar feature, which facilitates quick access to essential gaming-related settings such as VRR, brightness levels, and display modes, making it convenient and useful during gameplay.

However, there are certain limitations. The TV does not support HGiG, which may be a downside for some gamers, as HGiG optimizes HDR effect rendering in games, providing a more authentic visual experience. Additionally, while Dolby Vision mode is available, it is not practical for gaming due to very high input lag.

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.

In general, the input lag on the Sony X85L is very good, which is crucial for smooth gameplay and quick reactions in games. In standard modes, especially when using HDMI 2.1 and playing in 4K resolution at 120 Hz, the input lag is minimal.

Unfortunately, the Dolby Vision mode is an exception to this rule. In this case, the input lag reaches as much as 95 ms. Such a high level of latency makes the Dolby Vision mode practically unplayable, as reactions to commands are noticeably delayed.

Complementing this rich package for gamers is a parameter that has a direct impact on comfort and performance in gameplay – input lag. Even in native 60 Hz mode, the television boasts an excellent result of just 15 ms. However, the real magic happens when switching to 120 Hz mode, when the lag drops nearly in half, reaching values below 10 ms. Such responsiveness means that every command from the controller is transferred to the screen in the blink of an eye, something not only professionals will appreciate, but anyone who values smooth and immediate interaction with the game.

The cooperation of the Sony X85L television with a PC is a bit of a balance between image quality and user comfort. If we want to use the television for work, where clear text is important, we need to set the refresh rate to 60 Hz. In this mode, text looks good and does not strain the eyes, which is crucial if we plan to spend a long time in front of the screen.

On the other hand, if the television is to be used for gaming, where we can take full advantage of its capabilities at 120 Hz, we must take into account that the readability of fonts decreases significantly. The image becomes less sharp and the text harder to read, which can be frustrating. In short – the Sony X85L will work well for occasional connection to a computer, but if we need it daily for work and gaming, this compromise may not be to everyone's liking.

We finally come to an area that can undoubtedly be described as the biggest Achilles' heel of the TCL P7K/P79K – its cooperation with a PC. This is paradoxical because on paper, everything looks promising. The presence of G-Sync and support for high refresh rates at lower resolutions might suggest that it would also be a great monitor. Unfortunately, practice brutally verifies these assumptions. The key issue is the lack of support for full 4:4:4 chroma sampling. In everyday use, this translates to terrible font rendering quality – they, especially colorful ones, become jagged, surrounded by artifacts, and simply hard to read. This is not the end, as in PC mode, a significant issue with aggressive dithering also becomes evident, giving the entire image an artificial, overly digital appearance. The only consolation in this situation is the fact that in games, we can take advantage of additional hertz and G-Sync technology, but these are not benefits that could compensate for the fundamental shortcomings in displaying a static interface. The verdict is therefore clear: while it can still hold up as a screen solely for gaming on PC, in the role of a monitor for work or internet browsing, the P7K/P79K simply performs poorly.

The viewing angles on the Sony X85L, as is typical with VA panels, are not the best. The image looks great when viewed straight on, but just shifting to the side reveals that colors lose their intensity and contrast noticeably weakens. This can be a problem if the TV is intended for watching with a larger group, where viewers are seated at different angles. For those who usually watch solo or from one central spot, this won't be a big downside, but when viewing from the side, the picture quality unfortunately decreases.

When it comes to viewing angles, we enter a territory where VA matrix technology dictates inevitable conditions. As expected, this is the weak point of this model. It is enough to move away from the screen's axis to observe a gradual degradation of the image: colors begin to fade, contrast noticeably drops, and black loses its depth. In direct competition with IPS panels, which are renowned for their generosity in this aspect, the VA matrix must concede superiority to its competitor. Is there a plus side to this? Paradoxically, yes. Poor viewing angles are, in fact, the price we consciously pay for the fundamental advantage of this technology – a significantly higher native contrast and deeper blacks when viewed head-on. So, one could say that this is a television that favors the viewer sitting in the "ideal" spot, offering them a maximally vibrant image at the cost of universality.

The performance of the Sony X85L TV during the day is quite decent. Its satin screen coating handles light reflection moderately well, meaning that in bright rooms, there may be reflections, but they are not bothersome enough to significantly interfere. The brightness in SDR mode at 570 nits is sufficient for comfortable TV watching during the day, even with natural light coming through the windows. This ensures that colors remain vivid and the image is clearly visible, making the TV effective for everyday use.

The last practical test for any television is its daily performance in daylight conditions when it must compete with ambient light. In this competition, the TCL P7K / P79K has a slight advantage thanks to its satin screen coating. Its structure manages to quite effectively dampen direct reflections, dispersing them and protecting the image from excessive color fading or black brightness. However, passive combat with reflections is one side of the coin. The other is the active ability to "break through" bright surroundings, and here one of the key limitations of this model becomes apparent. The previously mentioned peak brightness of around 300 nits is simply too low to provide a fully comfortable and dynamic viewing experience in a brightly lit living room. In such conditions, the image may lack punch, and lower brightness scenes may lose clarity.

The Sony X85L operates on the Google TV system, which is a significant advantage for many users. The television offers wide access to applications, and using streaming platforms is smooth and user-friendly. The interface is intuitive and easy to master, allowing for quick switching between apps and searching for favorite content. Google TV allows for personalization of the home screen, enabling each user to customize it according to their preferences. Google Assistant further enhances the experience by offering voice control and quick adjustments of settings or movie searches without the need for a remote.

In terms of user functionality, the Sony X85L offers many useful options. The television has the capability to record programs, which is a significant convenience for those who want to watch their favorite content at any time. AirPlay support allows for seamless streaming of content from Apple devices, which iPhone and iPad owners will appreciate. Additionally, thanks to built-in Bluetooth, various devices such as headphones or keyboards can be connected. However, one drawback is the lack of a PiP (picture-in-picture) function, which may disappoint users who prefer multitasking on the screen.

The design of the Sony X85L television, while it may not be the thinnest, is solid and elegant. The metal base with adjustable legs is one of its strong points, allowing for height and width adjustments of the television to fit different furniture and spaces. This practical solution enhances the interior and adds a modern character to it.

Smart Features – the Power of Google TV

The heart and brain of the TCL P7K / P79K is the Google TV system, which in itself is a huge advantage. This platform provides access to an almost endless library of applications from the Play Store, ensuring that we won't be missing any key streaming service. Integration with other devices is exemplary – Apple device owners will appreciate the seamless cooperation via AirPlay, while Windows and Android users will easily take advantage of the screen mirroring feature. It is also worth highlighting the Google Assistant, which performs fantastically with voice searches in Polish, remaining one of the most effective and convenient solutions of its kind on the market. The operation of the system on the tested model can be described as "average plus." The interface is mostly smooth, but during testing, it experienced occasional slowdowns and even sporadic "freezes" requiring a moment of patience. Minor hiccups are also visible in the translation of some system messages, which can be awkward – however, these are just small oversights on TCL's part, not affecting overall functionality.

Classic Features

In the age of smart systems, traditional television functions often take a back seat, and this is also the case here. A significant advantage is the inclusion of a classic remote control with a numeric keypad, which does not require precise aiming at the screen for communication, greatly enhancing user comfort. The presence of Bluetooth technology for connecting external devices, like headphones or speakers, should also be noted positively. However, this is where the list of conveniences basically ends. It is evident that TCL has placed nearly everything on the Google TV card, treating classic functions as an absolute minimum. Therefore, we will not find the option to record programs from built-in tuners to a USB drive or the once-popular PiP (Picture-in-Picture) feature. This is therefore a basic package that simply works, but does not offer anything beyond what is necessary.

Sony X85L has no problem playing most popular file formats from USB, which is a big plus for those who often reach for external content. However, it is worth mentioning a small downside – the built-in player does not allow changing the font color in subtitles, which can be bothersome for some. Fortunately, thanks to the advanced Google TV system, users have a wide range of options. It is easy to install alternative media players that offer more customization options.

The built-in media player in the P7k/P79k model is at least a puzzling case, putting us in quite an unusual situation. On one hand, its engine handles decoding most popular video formats, which is obviously good news. On the other hand, we encountered a surprising and irritating issue – the default application has a fundamental problem displaying Polish diacritical characters in subtitle files correctly. Instead of letters like "ą", "ę", or "ż", empty squares or random, unreadable symbols appeared on the screen. Fortunately, thanks to the flexibility of the Google TV system, this problem can be easily circumvented. Installing an alternative, advanced player, such as the reliable VLC or KODI, completely resolves this inconvenience. The situation is peculiar because this flaw did not occur in other TCL models we tested previously. We are therefore dealing with a clear software oversight, which, hopefully, will be fixed in a future update.

The sound on the Sony X85L is good – it is clear across the entire scale, allowing you to enjoy both dialogues and music. The bass, although light, is perceptible and adds some depth to the overall sound. However, it should be emphasized that this is a subjective assessment – some will be satisfied with such a sound profile, while others may need additional audio equipment to fully feel the stronger tones and more spacious sound.

In terms of the built-in audio system, the TCL P7k/P79k presents a level that can be described as functional and correct, but lacking audiophile ambitions. The speakers play quite loudly, and dialogues in movies and TV shows are conveyed clearly and without distortion, which is crucial in everyday use. However, the soundstage definitely lacks a foundation in the form of low tones. This is a direct consequence of the absence of a dedicated subwoofer – an element that in the higher P8K series, with a large Onkyo subwoofer at the back of the cabinet, defined the strength of its sound. Here, that element is simply missing, making the sound seem flatter and lacking the depth that creates a cinematic atmosphere. We also noticed a peculiar feature in the software – when trying to set the maximum volume, the TV automatically reduces it. It's hard to conclusively determine whether this is a form of protection against distortion or a minor software bug; nonetheless, it's a pity, as the power reserves seem to be somewhat greater.

Sony X85L vs TCL P7K / P79K

Advantages

Disadvantages

Our verdict

TV appearance

Where to buy

Contrast and black detail

HDR effect quality

Factory color reproduction

Color reproduction after calibration

Smoothness of tonal transitions

Image scaling and smoothness of tonal transitions

Blur and motion smoothness

Console compatibility and gaming features

Input lag

Compatibility with PC

Viewing angles

Daytime performance

Panel details

TV features

Classic features:

Smart features:

Smart Features – the Power of Google TV

Classic Features

Playing files from USB

Apps

Sound