The Toshiba 55U8450C has a simple design and is equipped with Toshiba's exclusive REGEZA high-definition engine. The original Android system still uses Google's CTS certification for operating systems. Its price is more attractive than Japanese and Korean TV brands. .
From the parameter table, we can see that the CPU of Toshiba's 55U8450C is currently the mainstream A9 structure with a clock speed of 1.45GHz; the GPU also uses the current mainstream high-end configuration, the Mali450; the memory capacity is 2G. The overall configuration of the Toshiba 55U8450C is still quite good, especially CPU and GPU, to ensure high-speed processing and the ultimate picture quality of the 4K chip source. The system uses a native operating system that is close to Android. The fluency and compatibility are ideal.
Toshiba 55U8450C Appearance
Toshiba's 55U8450C still uses the classic minimalist design that highlights the thin and light characteristics of TVs. The ratio of screens is very high and the beauty is full, but there is really nothing surprising.
The combination of a silvery ultra-thin bezel and a black narrow bezel gives the Toshiba 55U8450C a visually minimalist aesthetic that does not have much redundancies. Fashionable qualities emanate from the inside out.
The flat atmosphere of the TV backplane and the staggered distribution of the heat dissipation outlets solve the problem of heat dissipation. The nameplate shows that the product is produced in Huizhou, with a power consumption of 150W and energy consumption of three levels. The bottom is a hidden reflex sound, which is more conducive to enhancing the bass effect.
The base of Toshiba 55U8450C is made of pure metal one-piece base, with a full weight and a very good fixed panel. The lower left corner is TOSHIBA's embossed logo, which looks very plain; the lower right corner is the infrared remote control's receiving port and switch indicating the breathing light, and the power status is green light. I personally prefer this simple and interesting design.
Interface Toshiba 55U8450C is very complete and luxurious, taking into account the use of some old user interface, such as VGA, color terminal and other interfaces can see the figure, full of humanity, which can not help but remind the author of the full text of his manual translation.
The design of the remote control is one of the highlights of the Toshiba 55U8450C. The compact design covers various functions, especially the design of the USB key, allowing users to quickly find their U disk. Although it is only a small improvement, it is obviously careful. Consider the result of the user experience.
Toshiba 55U8450C also randomly presented a 2.4G wireless mouse, the bottom of the battery cover is opened to take out the wireless USB receiver, access to the TV interface area of ​​the USB interface can be used. The wireless USB mouse plays a very important role in the video game. After that, the evaluation of the game part will use the wireless mouse. It is worth mentioning that Toshiba still delivers four batteries based on the user-friendly concept. This is still commendable.
In addition, the Toshiba 55U8450C also presented two 3D glasses, although the 3D function is rarely used in the TV, but have to say that so many manufacturers such as Toshiba really send so many accessories are already few.
Summary: Toshiba 55U8450C in the hardware configuration is definitely at the forefront, although there is not much innovation in the design, but the traditional simple design is remarkable; accessories, 3D eyes, wireless mouse control is a good addition Functional accessories; interface is a relatively complete level, to meet the user's various peripherals and input and output requirements. Therefore, the design of Toshiba 55U8450C has been at a high level.
Toshiba 55U8450C quality test
The evaluation room conducts detailed tests using professional instruments. During the test, we adjust the TV to the standard image mode, the backlight is adjusted to the brightest, other defaults, and all the test items and the score results of the product are made into a five-dimensional performance chart. Put it on the map.
Toshiba 55U8450CPConline quality test data model Toshiba 55U8450C Central brightness 492cd/m2 Average brightness 422cd/m2 Contrast 1659: 1 Color gamut range (equivalent to NTSC) 74.32%
After the evaluation of the instrument by Toshiba 55U8450C data above table, in color adjustment, Toshiba 55U8450C color gamut is 74.32%, is also the normal level of ordinary LCD TVs, light control performance is a significant shortcoming of Toshiba 55U8450C, full-screen light leakage The phenomenon is more serious and the light leakage is not uniform. In contrast to the unsatisfactory control light performance, the dynamic aspect of the Toshiba 55U8450C is quite good, and the details of the characterization are not excessively lost or blurred.
Power performance test
Toshiba 55U8450C power consumption test model / picture red green blue black and white color transition Toshiba 55U8450C 137.44w 137.83w 137.21w
138.67w
137.46w 138.28wIn terms of power consumption, Toshiba's 55U8450C performs generally, and its power consumption is three. However, this is also a common level of current 4K TVs. Therefore, the author gives a score of 7.5 on the power consumption link.
Color performance test
Toshiba's 55U8450C color gamut is 74.32%. From the perspective of color transition, the color transition is also very harmonious and natural, but the overall green color is yellow, which is consistent with the results obtained from the color gamut test. Contrast is measured. The data for the 1659:1, from a numerical point of view is a good data, but the actual performance of the Toshiba 55U8450C black screen is not particularly ideal, this part of we stay to control the light part to say.
In the silk standard test screen we can see that Toshiba 55U8450C's color reproduction ability is quite good, the color is soft and natural, the different shades of the same color can be well distinguished, there is no color cast, details The characterization is also very delicate.
From the standard test screen of the yarn ball, it can be seen that the color performance is more accurate and the details are clearly portrayed. The sticky area of ​​the red powder in the lower right corner hardly exists, but the center blue ball has a slight color cast.
The two girls with red, white, and yellow roses hold three-colored roses with accurate colors. The yellow and Caucasian skin color is natural, with high color reproduction and softness.
Summary: Comprehensive test data and screen shot proofs, we can find Toshiba 55U8450C color reproduction performance is still good, although the color gamut value is near the 70% horizontal line, not particularly high, and the consistency test results are flat, but playback out The color performance is also acceptable, Asian yellow skin and European and American white skin are very accurate, so the author based on its color performance score of 8.0.
Light control performance test
Brightness test We only adjust the backlight to the brightest, but the brightness value uses the default value. This brightness looks more natural. The brightness parameter of the screen is not the decisive parameter of the picture quality of the TV. Even if the brightness of the screen is low, due to the problem of the factory setting of the panel, products with low average luminance but excellent final picture quality are not uncommon. Toshiba 55U8450C see the white screen picture quality is very good, the picture is clear and detailed.
As mentioned earlier, the light control part is a short board of the Toshiba 55U8450C. From the grayscale chart, we can see that the black part between 0-2 steps has poor discrimination, and the white part is relatively better, which inevitably leads to black details. The ability to characterize is greatly reduced.
In terms of total black leakage, the Toshiba 55U8450C is also not particularly satisfactory. The upper left part of the screen has two areas where light leakage is more serious. Miscellaneous light leakage occurs in other locations.
The ANSI contrast test method uses 16-point black-and-white color blocks, and the ratio between the average value of the eight white areas and the average value of the eight black areas is the ANSI contrast ratio. The luminance value of the instrument before testing the brightness of the Middle East Zhishi 55U8450C 250cd/m2, the value is very close to the required value (250cd/m2) consistent, according to the principle of black and white performance should be good, but from the black and white lady's test screen we can see, The details of the white lady's hair on the black background become blurred, but the details of the clothes are still obvious, and the black lady's black clothes details are not well reflected in the white background, which is consistent with the conclusion drawn by the gray-scale diagram. , Toshiba 55U8450C black screen performance is not particularly satisfactory.
In the black-and-white standard test screen, we can see that the Toshiba 55U8450C white screen has excellent performance, and the problem of black screen performance is still not strong. In the charcoal part, the screen did not show any whitening phenomenon, but the details on the left side of the dark part are still more difficult to identify; in the Tokyo Tower part, the darker distinction of the middle billboard is more obvious, the sky is dark and the highlights are not over. Exposed phenomenon; black and white dress lady test screen, the details of Ms. White's dress will not mix with the background, the degree of distinction is ideal, but the performance of the black lady there is still a black dress can not be distinguished from the background.
Summary: Part of the light control, Toshiba 55U8450C performance is inevitably still somewhat regrettable, especially in the gray part of the black part of the difference in the level of the standard has been lost, but it does not hide, the performance of the white part is still very good, the details of some can be described . The overall picture performance and all black leakage, the author can only give it a score of 7.5 points.
Dynamic performance test
Dynamic processing Toshiba 55U8450C is no less inferior, through the 100% amplified train test chart can be seen through the high-speed train windows seen from the house and the branches are very clear, no obvious smear phenomenon Therefore, the author gave him a high score of 8.5 in dynamic performance.
Screen shot proofs
summary:
In the actual screen remake process, whether it is a static and dynamic picture or a complex color picture, Toshiba 55U8450C can perfectly show it out, due to equipped with a fever-class hardware configuration, the playback process is very smooth, almost no frames off, smear The emergence of such phenomena, the dynamic performance is very good, the degree of reduction in the color is quite satisfactory.
Toshiba 55U8450C HD resource playback test
Local HD video playback test
Since the current TV is generally compatible with 720p video resources and can be played smoothly, it will no longer be included in the evaluation test video table.
With 2G of memory and a powerful CPU and GPU, the entire playback test, in addition to the sport TV 4K test video Colombia VS Uruguay slightly outside the Caton (the document is relatively large, most of the currently tested TV will appear Caton), most 4K and 1080p video playback without the slightest possible, fast forward and rewind zero buffer, it can be seen Toshiba 55U8450C decoding capability is quite good.
H.265 decoding performance is also quite good, and H.265 decoding capability is good and bad and whether it can smoothly play online 4K HD resources have a certain relationship.
In terms of 4K online resources, the current market share is still very limited, and is limited by the speed of the Internet. At this stage, it is still difficult to see online 4K. Therefore, major TV manufacturers are also in this transition. During the period of research and development of 2K to 4K technology. Toshiba is no exception, let's take a look at the contrast between 2K video and 4K video.
Transformers 4 Preview: 1080p
Transformers 4 Preview: 2160p
It can be seen that the 2160p's picture is less detailed than 1080p, especially the details of the face, but the color of the 2160p picture will be a little brighter and closer to the original source color, so the effect of 2K to 4K Still quite obvious.
Local HD picture playback test
From the display effect of 4K images, the Toshiba 55U8450C color reproduction capability is quite good, the picture is very natural, very clear.
Summary: From the measured situation, Toshiba 55U8450C's performance is quite good, 2K to 4K role is quite obvious, the quality of the performance is also very stable, it is commendable.
Toshiba 55U8450C intelligent system evaluation
As mentioned above, the TV operating system adopted by the Toshiba 55U8450C is also the only system currently certified by Google CTS in the smart TV system. In terms of system fluency and compatibility, it is naturally much better than some deeply customized TV systems. . First test the boot time.
It can be seen that the boot time is about 20 seconds. This is a very good result, and there is no need to worry about the emergence of boot advertisements on some of the "Internet TV" in the market.
The UI of Toshiba 55U8450C is very similar to the "Start" menu interface of WIN8. The theme-based UI has a total of two pages. As for whether the UI in the end is a realistic style or a flattened UI looks good, the subjective influence of the subjective factors is not much to say. However, it is clear that this simple and direct UI makes operating systems closer to the Android native system more efficient. Smooth.
The Toshiba 55U8450C system does not have a setup wizard for the first boot, and it can be used immediately after booting. Users can change the monochrome background of the UI according to their preferences. This is similar to WIN8, although there are only four background colors to choose from. The upper left of the UI is a thumbnail window of the input signal source, and the user can switch the signal through the signal source switching key on the remote controller.
The Toshiba 55U8450C resource provider is Mango TV, which has enough channels and massive HD video resources. It also includes its own home-grown programming resources, such as “I’m a singer†and “Wu Mei Niang†which are very popular recently, and the resources are updated quickly. There are more handshaking parties, special seasons and other channels to provide users with the latest preferential information.
Mango TV does not include online 4K channels, but the resources of 1080p can also be very clear after 2K to 4K. From the following video, you can also see that the speed of loading HD video in 4M broadband is still good.
Toshiba 55U8450C's voice is also very powerful, open applications, weather inquiries, increase or decrease the volume, search resources can be completed by voice, high accuracy. Before using the voice function, you need to press the "+" and "-" keys on the remote control at the same time to achieve the code with the TV.
In order to not find the application store when the user does not need to start using it again, the Toshiba 55U8450C provides a one-click service. At the top of the UI there is a perpetual calendar and the weather is viewable.
summary:
The system is worthy of being the strength of Toshiba TV. The system runs smoothly and smoothly. The function is also very practical. There are no pre-installed software that is not practical. This is also very much appreciated by the author. Voice recognition is also very high and does not make speech a tasteless feature. In simple terms, the Toshiba 55U8450C system is one of the few outstanding smart systems I have ever seen.
Wireless Internet, game and hardware running points
Wireless interconnection
The Toshiba 55U8450C has a wireless internet connection that allows the mobile phone screen to be projected onto the TV screen.
This function is similar to the multi-screen interactive function, but it is more convenient to install the mobile phone app without directly connecting the Toshiba 55U8450C wifi, which is quite user-friendly.
Game experience
With such a fever configuration and equipped with a wireless mouse, naturally can not miss the game this link, I downloaded a 3D snooker game experience, the game runs very smooth, there is no point of Caton, there is no flashback situation, This is also entirely due to the near-perfect compatibility of its systems.
The author also tested several other game applications that can run smoothly. The experience brought by the big screen is also not met by computers and mobile phones. This should be a big gospel for friends who are pursuing living room entertainment.
Hardware running points
Running is divided into 20932 and the score is ideal. Although running points can only serve as a reference, at least it also represents a significant amount of hardware configuration.
Summary: The living room game is becoming one of the important functions of the smart TV more and more. However, due to the poor system compatibility and the phenomenon of flashback after installation of many games, the system of the Toshiba 55U8450C has a good compatibility. This will not happen. The wireless interconnection function can achieve multi-screen interaction without app, and is full of humanity. This part of the performance, Toshiba 55U8450C naturally has a surprising performance.
to sum up
Toshiba 55U8450C
Evaluation Pros and Cons Summary
advantage
1, Android certification CTS system, good compatibility 2, thin body 3, Mango TV genuine resources 4, high color reproduction, color is relatively accurate 5, wireless Internet
Shortcomings
1, black screen performance is weak
2, the green display is slightly biased
The whole review came down, Toshiba 55U8450C in the picture quality and the system are performing very well, although there is still a regrettable place in terms of picture quality, especially the performance of the black screen and the Japanese TV in the past to our impression There are relatively large differences. After all, Toshiba’s television has already entered the era of foundry. After all, quality control may not be as good as it used to be. However, the outstanding performance of the system still left a deep impression on the author. If you have a more demanding friend on the picture quality, I think Toshiba's product may not be able to meet your critical eye, but if you want to buy a picture quality law-abiding, intelligent system performance products, then you may wish to consider Toshiba 55U8450C.
With the rapid development of domestic television and “internet TVâ€, the television industry has also been affected by the same impact as the mobile phone industry. Perhaps the current situation is that many people pursue the so-called cost-effectiveness to weaken the quality of the image or even abandon the importance of quality to television. My understanding is that Japanese, Korean, and Japanese television in particular have to face this severe market trend, but I personally think that TV should still be based on quality. I also believe that the future consumers must It will also return to focus on the right track of TV quality.
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