The first batch of Snapdragon 8 phones is stable, we can change the focus

The whole process of "Honor of Kings" is 120fps, and the heat is well controlled.

After we just tested the new generation of Snapdragon 8 mobile platform mobile phone, we got such a common conclusion. Several flagship mobile phones from Xiaomi, Realme and iQOO are currently performing very well, and they are at a level that can be bought depending on budget and preferences.

From the release of the Snapdragon 8, to the actual measurement of the engineering machine, and then to the launch of mass-produced machines of major brands, it is actually suspenseful. Many people are worried about its actual performance and heat generation, but Ai Faner participated in the actual measurement of the engineering machine as soon as the Snapdragon 8 was released. At that time, two things were impressive: the graphics performance has improved a lot. , the heat control is quite good.

▲ The frame rate curve of Xiaomi Mi 12 Pro running "Honor of Kings"

The first batch of Snapdragon 8 mass-produced machines have also been launched successively. Many initial evaluations, including Ai Faner, have focused on performance and heat dissipation. Everyone's conclusions are similar: Snapdragon 8, quite good calm down. At the same time, while maintaining "coolness", it also continues the performance of the engineering machine, and performs well in the peak performance and continuous performance of difficult games.

However, now that it is 2022, we can actually pay attention to other things of the Snapdragon 8 mobile platform, those features that are hidden in the details but always affect the experience.

A less-noticed example is that in 2021, many camera firsts will come from Snapdragon platform mobile phones, such as the first 10-bit HEIF camera phone, the first 4K 120FPS camera phone, the first 1-inch outsole phone, DXO Top mobile phones and more.

Similar to the baseband of the Snapdragon, the image part of the Snapdragon mobile platform is not under the spotlight in the foreground, but it is really reassuring to be behind the scenes.

On the Snapdragon 8, its imaging features have been upgraded again, and many shooting functions that were out of reach a few years ago have become possible on mobile phones between square inches.

Now many mobile phones have started shooting with 10-bit color depth (generally, 14-bit data is processed by the mobile phone ISP), and they are also equipped with a corresponding 1 billion color screen. Compared with the previous 16.7 million color photography and display, this is a Huge progress, there is no harm without contrast. When the sun is setting in the west, or the sea and the sky are the same color, the delicate and natural transition of 1 billion colors is beyond the reach of the latter.

But in theory, the number of colors in nature is infinite. The 1 billion colors brought by 10bit color depth is not the end of the photo, but one of the key milestones. The road behind can actually extend infinitely. Now the Snapdragon 8 mobile platform has been equipped with the first smartphone ISP (Image Signal Processor) that supports 18bit color depth.

Compared with the three 14bit ISPs of the previous generation Snapdragon 888, the three 18bit ISPs of the Snapdragon 8 can process 4096 times the dynamic range data of the former, which means that mobile phone photography is one step closer to reality.

Dolby Vision is currently the best HDR video format, and it is also the format with the highest requirements for shooting and playback equipment. For example, it requires 12bit color depth, so it is very good to support 18bit operation and processing on the ISP Shooting in Dolby Vision.

Night scene has always been the traditional strength area of ​​Android mobile phones. After the mobile phone ISP is upgraded to 18bit, the night scene of the Snapdragon 8 mobile phone also has a higher upper limit. This is because the bright and clean night scene photo we see is actually taken by the mobile phone. Multiple photos with different exposures are synthesized, some photos are responsible for the purity of the picture, and some are responsible for the brightness of the picture, and finally they are combined into one. In the past, the low-light engine of Qualcomm Snapdragon generally took 6 photos for synthesis. Thanks to the new 18bit ISP, this engine has been upgraded to a "super multi-frame engine", which can take 30 photos for synthesis at a time. This is a good Snapdragon. The night scene level of Dragon mobile phone can be improved again.

▲ The Xiaomi Mi 12 Pro equipped with the Snapdragon 8 mobile platform has an excellent night scene performance

As mentioned earlier, mobile photography is often a game of data and calculation. 4K 120fps records twice as many pictures as 4K 60fps, and 8K HDR10+ gets more information per frame, which also marks the transition from being able to shoot 8K videos to being able to shoot 8K videos well.

At the same time, the 18bit ISP of the Snapdragon 8 also supports an interesting feature: while shooting 8K video with one lens, it can also shoot 64-megapixel photos. The reason is also very simple, because the data processing bandwidth of 18bit ISP is greatly provided, this generation of Spectra ISP can process 3.2 billion pixels per second, the road is wider, the road is better, and it supports multiple heavy-duty trucks to keep pace.

The advancement of the underlying technology can bring blessings of many features. The "video super resolution" supported by 18bit ISP can preserve more details of the picture after digital zooming, and export 18bit RAW images to provide professional photographers with a wider post-production space…. .

There are many similar imaging technology updates on the Snapdragon 8. For example, the face recognition feature points have been increased from 100 to more than 300. Not only is the recognition faster, but the related expression capture and emotional judgment are also more accurate. Ultra wide-angle shooting can now reach 140-degree photos, and there is no need for stitching, and the algorithm can correct edge distortion.

The image support of this generation of Snapdragon 8 mobile platform can basically be described as "two steps faster than the mainstream". This is of course the self-cultivation of a flagship chip, and this self-cultivation is also reflected in more secret corners.

Sound performance is a mobile phone feature that we are always with but easily overlooked, and the support for the sound features of the new generation of Snapdragon 8 has also made great progress.

Once upon a time, when we mentioned that wireless headphones are connected to mobile phones to listen to music, basically we only expect to hear a sound, and we don’t have much hope for sound quality. Thank goodness that the treble is not harsh and the bass is not dull.

However, the field of smartphone manufacturers has been involved in smart watches and wireless earphones. Now it is not difficult to find a wireless earphone with low latency, long battery life, good noise reduction and good sound quality. Based on the Snapdragon 8 mobile platform and Qualcomm's FastConnect 6900 mobile connectivity system, the Snapdragon Listening technology released last year has also been enhanced.

The two most noteworthy features are "CD-level lossless wireless music" and "ultra-low-latency voice synchronous return". The former is quite easy to understand, but the sound quality is further improved, approaching the wired level. The latter allows the game voice communication experience to approach or exceed the limit of human perception, making the experience of multiplayer team games more immersive.

A game is a combination of audio and video, and it is also a part of considering the comprehensive strength of the mobile platform. As I said at the beginning, the graphics performance of this generation of Snapdragon 8 has improved a lot, which has laid a solid foundation for its game performance.

In this traditional strength of Qualcomm Snapdragon, the game features are worth talking about not only the frame rate running points.

Such as variable resolution rendering (VRS), this technology can be analogous to the variable refresh rate in display technology. In a picture, in fact, many places do not need such a high resolution, such as blanks in the background of the picture, blue sky, etc., it does not matter if the resolution is lower, while the road and grass in the middle of the picture do not need to be as fine as the subject. , the center of gravity of the picture and vision can retain the highest resolution. Therefore, adjusting the resolution for different parts of a picture and doing fine-grained management can reduce the load on the GPU. Under the same picture quality, the frame rate can be increased and the power consumption can be reduced. consumption. VRS was first supported on the Snapdragon 888, and now the Snapdragon 8 platform can support the more powerful VRS Pro, the advanced version of variable resolution rendering, which can provide game developers with finer particles when tuning game performance degree control.

Not only players pay attention to pre-judgment in the game, but the chip also has to pre-judgment the game screen. Another game feature that can increase frame rate and reduce power consumption is the Adreno Graphics Motion Engine, which uses historical frame data and GPU-optimized motion estimation to allow games that support this feature to generate more frames, allowing games to run at double the frame rate , while maintaining nearly the same power consumption.

Reality and immersion have always been the goal of game development. Therefore, technologies such as spatial audio, stereo rendering, and ambient light have also been born in recent years, all for the purpose of "mixing the real with the fake". These features supported by the Snapdragon 8 can make the gunshots, footsteps, and explosions in the shooting gun battle game clear and clear and have a sense of orientation, so that the smoke from the grenade explosion or the clouds and mists in the mountains are more in line with the laws of physics, and let the light shine directly. The effect produced by the refraction reflection is close to the real world. . . .

▲Leitz Looks mode

It can be seen that when talking about video, AI is inseparable. When talking about sound, the game is an important scene, and when talking about the game, the sound is an inseparable part. Therefore, in many classification scenarios, technologies are crossed, and AI is widely used. The AI ​​capabilities of the Snapdragon 8 are almost ubiquitous, and the dominant one is the built-in Leitz Looks mode, which allows the phone to take Leica-style German photos; AI can also track the user's health through voice, such as mental health, Or whether the user has asthma, etc. There are more places where AI implicitly contributes, and even poor signals can be optimized by AI: for example, the Snapdragon 8 can intelligently detect the user’s holding posture, thereby adjusting the antenna performance to optimize the signal.

Today, when the Snapdragon 8 mobile phone has been launched on a large scale, looking back at its various new features is actually a process of reviewing the old and learning the new. If the time line is lengthened, the process of technological development can be more experienced. There is one technical detail that impressed me: the audio part of many games runs on the CPU, but many game masterpieces have a lot of audio objects, even up to 128. If they all run on the CPU, the load and power consumption are not small. ; So Qualcomm worked with partners to offload these extra CPU tasks to Hexagon processors for better results and higher energy efficiency.

The same is true for new features such as variable resolution rendering, image motion engine, etc. A technology from scratch, from coarse to fine, is not only a technological process, but also a leap in experience.

In the plastic greenhouse of fate, every cabbage that has been sprayed with too much pesticide once had a dream of becoming a pollution-free organic vegetable.

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