Xiaomi 12 Pro's flagship performance evaluation plus self-developed technology to create excellent experience.

Speaking of Android phones, at present, most products still achieve performance improvement through hardware stacking, but many flagships have not completely matched the corresponding experience after using the most advanced technology and hardware. For example, some LTPO screens claim variable refresh rate, but when in use, the finger will automatically drop to 60Hz as soon as it leaves the screen, and it will not automatically adjust according to the scene. In addition, in order to highlight the camera parameters, the hardware is only stacked to the strongest, but for the optimization of the shutter, the camera experience is not optimized accordingly, and problems such as inaccurate focusing and slow shutter response also occur from time to time.

Considering the increasing demand of users for smart phone experience, the current Android flagship is no longer just a stack of hardware parameters to achieve overall performance improvement. Xiaomi officially released its digital flagship Xiaomi 12 Pro on 28th. In addition to the regular upgrade to the latest generation of Snapdragon 8 mobile platform, Samsung's second-generation LTPO screen is used, and the camera and charging are also upgraded. Moreover, Xiaomi also matched the experience of these hardware upgrades and optimized the experience of the whole machine. The release of Xiaomi 12 Pro also reshaped Xiaomi's digital flagship product, from the previous pursuit of simple running hardware to the transformation of creating a comfortable experience through the integration of software and hardware. So what are the specific upgrades of this Xiaomi 12 Pro? Next, I will give you a detailed evaluation experience.

Design:

Xiaomi 12 Pro offers a variety of color choices. Black and blue are common glass materials, which are not only versatile in color, but also very smooth to the touch. Purple uses flash sand technology, which will produce shining visual effects under the light, making matte materials more textured.

This one in our hand is a plain leather version, which is slightly thicker than other glass materials. However, the grain on the surface of plain leather is delicate and comfortable to hold. Light green plain leather gives people a simple and elegant feeling, which has a special style compared with the common glass mobile phones on the market. This vegetarian skin is still made of environmentally friendly PU, which realizes the addition of organic solvent 0.

In order to take care of the user's grip comfort, Xiaomi 12 Pro has also put a lot of effort into the details. The seams of the whole machine are further chamfered, and the use of caulking glue makes the transition between the screen and the middle frame more delicate and smooth.

Screen display: LTPO 2.0 experience energy saving, comprehensive consideration.

Xiaomi 12 Pro adopts Samsung's latest E5 material, which can save 16% power consumption compared with the previous generation E4 luminescent material. There are also special microprism structures on the pixel layer and the touch layer, which make the screen light more concentrated in the range of human eyes, improve the front light efficiency, and reduce the power consumption by 9% under the same brightness. Moreover, the addition of LTPO 2.0 further optimizes the power consumption of this screen while ensuring the experience.

Although many LTPO models have been released this year, in fact, it is still a white list lock framework. When the finger leaves the screen, it will drop directly to 60Hz. It was not until the appearance of iPhone 13 Pro Pro Motion that the LTPO feature was really utilized, taking into account fluency and power saving.

Xiaomi 12 Pro also upgraded the intelligent dynamic refresh rate technology. The general implementation process is that the finger sliding screen will be full of blood at 120Hz to ensure fluency, and the refresh rate will be reduced after sliding slows down to achieve the effect of saving electricity, and the refresh rate will be automatically adjusted according to the screen rendering frame rate according to the scenes such as watching videos and novels. For example, when playing games, you can adjust the maximum refresh rate to 90Hz and 60Hz to match. When reading e-books, the picture can be reduced to 1Hz when it stops, and it can be adjusted to 30Hz when watching videos, so as to achieve a balance between viewing effect and power saving.

Through practical experience, we can also see that this screen can really slide and change speed like iPhone 13 Pro. When the finger slides on the screen, the refresh rate of Xiaomi 12 Pro will slowly decrease with the change of screen moving speed, which is smooth, insensitive and excessively natural. With the intelligent dynamic refresh rate gradually supporting more system applications and third-party applications, it is believed that it will provide users with a more energy-saving and perfect screen experience.

In addition to high display refresh rate, in some game scenes that need frequent manipulation, we also hope that the higher the touch refresh rate, the better, and the more fingers we support. In order to meet the needs of these gamers, Xiaomi also adopted a brand-new self-developed touch engine, and optimized the touch algorithm with the platform computing power, so that Xiaomi 12 Pro can support 10 refers to 480hz touch response at most.

In addition to better variable refresh rate, every screen of Xiaomi 12 Pro will be professionally calibrated before leaving the factory, with JNCD≈0.43 and delta E≈0.4, which supports 10bit color depth and can display10.07 billion rich colors. Xiaomi 12 Pro is newly equipped with a self-developed natural eye protection mode. Through AI training, intelligently reduce the proportion of harmful blue light on the screen. While reducing the total amount of harmful blue light, other colors should be kept as natural as possible.

A New Generation of Snapdragon 8 Mobile Platform: More Powerful Game Performance

A new super-large core X2 based on ArmV9 instruction set, with the highest frequency of 3.0GHz, is specially designed for short-time high-explosive computing tasks, and its peak performance is better than X 1 Boost 16%. The brand-new A7 10 core, with the highest frequency of 2.5GHz, is designed for continuous high-performance tasks, and its performance is improved by 1 1% compared with the previous A78 architecture.

Thanks to the new architecture, the core of energy efficiency has been further upgraded. Qualcomm 8-series platform officially bid farewell to the A55 small core with four generations, and upgraded to A5 10 with the highest frequency of 1.8GHz. This core is specially designed for energy saving, and every couple enjoys L3 cache, further reducing power consumption. Compared with A55, the performance of A5 10 is improved obviously, reaching 34%, and its IPC is close to A73 core of Xiaolong 835.

Through the actual running test, we can see that in the comprehensive performance of Ann Bunny, Xiaomi 12 Pro has reached the super high score of1020,000, and the single-core performance of CPU on Geekbench has reached 1 186, and the multi-core performance has reached 3678. Compared with Snapdragon 888 platform, the score of around 3000 has been obviously improved.

Compared with the conventional CPU upgrade, the biggest highlight of this new generation Snapdragon 8 mobile platform is the improvement of GPU performance. GPU is the most important computing power in graphics computing, and it plays an important role in real-time 3D rendering of games, VR, AR and image processing. At the same time, it also undertakes some responsibilities of AI computing and general computing.

The new generation of Ardreno GPU is the first overall architecture upgrade of Qualcomm in five years. Its core area is increased by 60%, and the graphics rendering speed is increased by 30%, among which the performance of Vulkan is improved by 60%. We tested 1440P OpenGL and Vulkan through GFXbench, and the results reached 42fps and 46fps, which were comparable to Apple A 14. In the off-screen test in Manhattan, Xiaomi 12 Pro reached 163fps(3. 1) and 236fps(3.0). The screen scene of GFX Manhattan 3.0 is up to 52% higher than that of Snapdragon 888.

In the test of 3Dmark, the overall score of Xiaomi 12 Pro reached 9774, which was significantly higher than the score of 5700 on the previous generation Snapdragon 888 mobile platform. However, due to the high power consumption and heat generated by high performance, the stability is somewhat general. In the stress test part, the performance showed an obvious downward trend after continuous testing for about 8 minutes, but remained at around 5000 in the remaining time. Although its performance has declined under continuous high-load test, its performance is still comparable to that of Snapdragon 888 under full blood condition.

Although the new generation Snapdragon 8 mobile platform has high performance output, it also has the following heating problems. It is inevitable to keep high-performance output for a long time, and the frequency reduction caused by high temperature will affect the long-term game experience in some game scenes. If you want to have a quick response all the time, you need to relax in performance tuning and limit performance in scenes that are not easily perceived by users, so as to leave room for heat dissipation and power consumption when performance is really needed.

In order to ensure the stable performance of the long-term game process, Xiaomi joined the dynamic performance scheduling technology, which has been applied to the game of the glory of the king. By analyzing the progress of the game in real time, the frequency is dynamically reduced under low load such as single player playing in the wild, and the frame rate is stabilized by predicting and scheduling all cores in advance under high load scenarios such as multiplayer team battles.

Through the actual test in the glory of the king, we can see that there are still some changes in CPU performance calls. When the scene is killed, the frequency of the big core will drop rapidly, and the opening and middle and late playing parts will be maintained in a low range. When the scenes of large-scale team battles frequently appear near the end of the game, the CPU performance will be improved again, further ensuring the stability of the overall frame rate. It is precisely for the scheduling of different scenes that the frame rate of the whole game can be stabilized at 120fps, and the calorific value is also well controlled.

In order to verify the performance of GPU, we finally have to experience it through the most direct Genshin Impact. After actual measurement, the whole game can still maintain a high frame rate under the setting of the highest picture quality of 60fps. In the first 20 minutes of the stress test, the overall cpu and memory usage gradually increased and remained at a peak, especially in the case of fighting and rapid camera movement. After entering the trial room, the scene that needs real-time loading becomes simple, all the loads and fever are slightly relieved, and the frame rate can be maintained at a high level above 50fps in the battle lasting about 5 minutes. Although the overall frame rate fluctuates somewhat, the actual experience has far exceeded the performance of previous Android phones.

Because Xiaomi 12 Pro has been completely stacked in terms of heat dissipation in order to ensure the performance of the whole machine as much as possible. Equipped with 2900mm3 ultra-large area heat dissipation VC, completely covering the centralized heating area, heat transfer is faster. At the same time, it also has three layers of large stone ink sheets, which can bring good thermal conductivity for daily use or high-load games. We also measured the heat of the whole machine after a half-hour full performance Genshin Impact test. Due to the ultra-high load, the heat output of the whole machine is slightly higher, but with the help of large-area heat dissipation design, the overall heat has obvious diffusion and there is no obvious heat accumulation problem.

Camera: The new architecture focuses on improving the camera experience.

In order to bring the strongest night scene performance, Xiaomi launched Sony's new generation camera sensor IMX707 around the world. This cmos has a large photosensitive size of11.28 inches, and supports 4 inches1pixels. After synthesis, the single pixel area reaches 2.44um, and the photosensitive ability is greatly improved. Through the owl algorithm developed by Xiaomi, no matter the distance, the full-focus segment can support excellent night scene shooting.

Compared with the flagship equipped with IMX766 on the market, IMX707 has stronger photosensitive ability. Through the upgraded algorithm, the pure night scene performance of the mechanism is perfectly restored, and it also brings better screen capture ability.

When Xiaomi 1 1 Ultra was used before, many users criticized its slow shutter response and slow focusing speed. In view of various camera problems encountered by users in actual use, Xiaomi has rewritten the camera architecture for two years, and installed a brand-new Xiaomi image brain in Xiaomi 12 series, including four modules: intention recognition unit, acceleration engine, computing unit and ecological engine. By predicting and identifying before shooting, calling different hardware when shooting, and optimizing the algorithm after shooting, the whole shooting experience is improved in all directions.

When users take photos, the continuous shooting interval is greatly shortened and the continuous shooting experience is improved through heterogeneous parallel computing. At the same time, the problem of shutter lag is significantly improved, and the channel from hardware to third-party software is opened, so that more and more applications can access the brand-new Xiaomi image brain and use its brand-new architecture.

When we usually take pictures of children or pets at home, it is easy to post the pictures. In order to solve this pain point, Xiaomi 12 Pro upgraded the focusing system, which can automatically identify human bodies, faces and small animals in activities. On this basis, Xiaomi also transplanted Cyberdog's human visual tracking technology to mobile phones. As long as you double-click anything in the viewfinder, you can focus on it, and even if you return to the screen after leaving the country, you can quickly find the focus.

Relying on the brand-new everything focus tracking system, Xiaomi 12 Pro supports the focus tracking ability of human eyes, quickly and accurately recognizes portraits through AI models, directly locks the human eyes for close-up shooting, and can also give priority to capturing faces for quick identification and locking after pulling away; Thanks to the sharp increase in camera speed, Xiaomi 12 Pro also upgraded the motion capture function. After opening, when the mobile phone detects a fast moving object, it can increase the shutter speed and give priority to ensuring the clarity of the picture.

澎湃 P 1 realized more efficient and fast charging of 120W single battery.

Fast charging is a systematic project, involving life, safety, battery life and other dimensions. If you blindly pursue the limitation of charging time, you will compromise in other aspects.

At present, smartphones with wired charging speed of 120W all adopt dual-battery system. Although it achieves faster speed, the design of dual batteries reduces the utilization rate of the internal space of the mobile phone. So that the space that could have been left for battery cells is occupied by more complicated charging circuit and double battery cell structure. Moreover, a 2: 1 chip is needed to reduce the voltage when the double batteries are discharged, and its conversion efficiency will lead to the waste of electricity. Although the single battery charging system can avoid the above problems, it is a bigger problem to increase the charging power to above100W.

In the previous single fast charging system, five series-parallel circuits with different charge pumps were needed to convert the 20V voltage input to the mobile phone into 5V voltage that can be charged into the battery. A large number of charge pumps and the whole series architecture will bring a lot of heat, so it is impossible to run at full power for a long time in practical use.

In order to realize an efficient charging power supply, it is definitely not feasible to use a bulky charge pump circuit. It is necessary to redesign the whole charging architecture and redefine the function of the fast charging chip. The core of driving Xiaomi 120W surge secondary battery is two self-developed smart charging chips of Xiaomi: surge P 1. They take over the complex structure of the traditional 5-charge pump, and convert the high-voltage electric energy input to the mobile phone into a large current that can directly charge the battery.

2855438+0 undertakes a lot of conversion work: the traditional charge pump only needs two working modes (variable voltage and straight-through), while 2855438+0: 1, 2: 1 and 4: 1 conversion modes, and all modes need to support bidirectional conduction. Among them, forward 1: 1 mode makes bright screen charging more efficient, forward 2: 1 mode is compatible with more chargers, forward 4: 1 mode can support 120W surge second charging, and backward1:2//kloc. In practical use, connecting 120W second pulse can fully charge the battery of mobile phone for about 18 minutes.

Summary:

Through the above practical tests, we have seen many improvements in the experience of Xiaomi 12 Pro, such as screen upgrade, adjusting the screen refresh rate to the camera architecture that is most suitable for high-performance and high-power usage scenarios, and constantly giving optimization and experience different from previous Android phones in focusing and algorithms, making it possible for mobile phones to quickly capture and focus on objects. 120w single battery has been solved before secondary charging. Facing the stronger performance and higher power consumption of the new generation Snapdragon 8 mobile platform, Xiaomi 12 Pro gives a better and more comprehensive optimization, which makes the user experience further through the integration of software and hardware. Xiaomi has also opened up a new direction for the development of Android flagship through this product.

In terms of experience, Xiaomi 12 Pro is also directly equipped with a brand-new MIUI 13, which has made a better upgrade for security. In the future, we will send you a MIUI related experience test separately. In terms of price, the all-round high-end flagship Xiaomi 12 Pro has three capacity versions, 8GB+ 128GB version 4699 yuan, 8GB+256GB version 4999 yuan, 12GB+256GB version 5399 yuan; On the afternoon of February 28th, the pre-sale of deposit was started on 10, and the omni-channel sales were officially started on 365438+0: 00 on February 28th.