(Original title: Stop focusing on the performance of the Snapdragon 845, because it really matters) Not surprisingly, Qualcomm's new Xiaolong 845 processing platform is also very "AI." Hours ago, at the Qualcomm Snapdragon Technology Summit held in Hawaii, Qualcomm finally officially opened the veil of the Snapdragon 845 platform. Based on the announcement formally announced yesterday, various details of the Snapdragon 845 platform were thoroughly detailed. Introduction. Lei Fengnet also participated in the entire press conference on the site. The following is what you need to pay attention to. First, Xiaolong 845, why performance is no longer important? As a new flagship product, positioning is naturally important, and Qualcomm eventually positions the Opteron 845 platform as "a new architecture for AI and immersive experience." Yes, everyone's most concerned about performance, process, power performance, and a series of content is not the most important feature of the 845 this time. However, as a matter of practice, we still need to briefly review some routine changes. The first is the process, which is still exactly the same 10nm LPP technology as the previous generation 835 platform. This also determines that the Xiaolong 845 should also consider its own energy efficiency ratio while improving its performance. Followed by the CPU, from the previous Kryo 280 upgrade to Kryo 385. It is still the same 4+4 core architecture as the previous generation, but certain changes have taken place in the core architecture, core operating management mechanism, and frequency. Qualcomm’s current official figure is that the performance of large-core is 25-30% higher than that of the previous generation, and the small-core performance is increased by 15%. The GPU has also been improved, and the overall performance improvement rate given by the official is 30%. However, at present, we cannot know what the internal structure of the Adreno 630 is and what the actual running scores are. Another good news is that Qualcomm has joined the “system cache†for the first time on the 845 platform. According to Lei Feng’s understanding, this cache will be used as the connection of all parts of the 845 platform, which will also improve the operating efficiency of the entire 845 platform to some extent. And performance. It is worth noting that Lei Feng net saw some of the power consumption performance of the official test of Qualcomm's official site in the offline demo that was conducted later in the conference. In the case of the same large Bechmark, the cumulative average power consumption of the Snapdragon 845 platform was 2961 mW (milliwatts), while that of the Snapdragon 835 was as high as 3764 mW. The overall power consumption reduction ratio exceeds 20% in terms of conversion. 2. How much AI did you use in Panlong 845? Xiaolong 845 will "join" some AI capabilities, but the specific approach has always been a mystery. When today's 845 platform internal module diagram appears, many people are dumbfounded - because there is no obvious AI computing unit in the internal module, but is still a traditional DSP, ISP and other specific scenes of the processor. For this, Qualcomm AI and Gary Brotman, machine learning product manager, separately stated to Lei Fengwang after the conference: “We do not want to just add an 'AI module' to the mobile phone processor, but let the AI ​​technology really give consumers Bring change." In fact, Qualcomm's final choice in AI computing is "heterogeneous" - including CPUs, GPUs, DSPs, all have the ability to run AI algorithms. So who should be the specific AI needs? Qualcomm developed a set of NPE systems specifically for the management of various artificial intelligence languages, architectures, and algorithms, and then assigned tasks based on the advantages and disadvantages of CPUs, DSPs, and GPUs, ultimately providing solutions for different application scenarios. Program. Another benefit of this solution is that Qualcomm gradually moves the most commonly used AI functions and algorithms into the most efficient DSP, while CPUs and GPUs can shoulder some of the less frequently used or new AI functions. This saves overall system power consumption. Among the three processors, DSP is undoubtedly the most efficient operation of some AI scenarios. It is also the third generation of vector computing DSP of Qualcomm. At the same time, it can complete tasks such as image processor, vision processor, deep learning processor, and neural network processor. Of course, only the hardware is not enough, Qualcomm has not independently cultivated a variety of application scenarios AI algorithm plan, they then chose to "create a road" and "support." The first is to develop a very easy-to-use SDK for current DSP processors in Qualcomm, and Qualcomm is also working closely with companies and schools in the AI ​​industry. The two most mentioned companies in today's press conference came from China, namely Shang Tang and Face++. Third, the first independent security module As another major change in the 845 platform, Qualcomm added a new Security Processing Unit to its internal module architecture. It is a system that is relatively independent of other modules and has its own independent operating OS, cache, and even power management system. As a further addition to the HLOS and TrustZone in the CPU, it is fully expected to make users' biometric information, bank cards, SIMs and other extremely sensitive content more secure. Fourth, further solidified Gigabit LTE era Qualcomm platform naturally can not pay attention to the progress of the baseband, this update of the Xiaolong X20 Modem improvement is mainly to further use LTE speed, rather than directly into the 5G era. As the official of Qualcomm himself stated: The Xiaolong X20 Modem is the second Gigabit (Gbps) modem that we are about to commercialize. Of course, at the critical speed, the X20 Modem has made some progress compared to the X16 Modem equipped with the Snapdragon 835. The first is that it has been able to achieve a stable downlink speed of 1.2Gbps. At the same time, it supports up to 5 carriers in terms of the number of carriers. With the help of 4x4 MIMO technology, the X20 Modem can implement up to 12 channels of simultaneous Internet access. In the scene of the Demo, the engineering prototype equipped with Qualcomm 845 did indeed stabilize the downlink speed at around 1.2Gbps. At one time, Lei Feng was shown a still picture at its speed. In addition to cellular networks, the 845 has also made progress in Bluetooth and wireless networks. Improvements such as multiple Bluetooth wireless speaker connections, Wi-Fi 11ad dual antennas, etc. will also bring some changes to the user's wireless application experience. Lei Feng Network Summary: Xiaolong 845, focus on user experience In the years that accompany smartphones, the main theme of mobile processors has been almost inseparable from performance and power consumption. However, it is not difficult to see from the Xiaolong 845's body that, as performance reaches a certain level, it is no longer the direct element that has the greatest impact on the user experience. On the contrary, the computing power needs to undergo some changes due to the needs of users. You need to get your ISP to support better imaging and shooting techniques, you need deep learning, neural networks to learn at high speed on your own hardware platform, and then bring users comprehensive and subversive AI capabilities. You need to further bring users more high-speed networks and so on. Compared to the previous pure-running comparison method, we also seem to have entered a new era of mobile phone experience. Judging from the current rhythm, the Xiaolong 845 is likely to be the first model to be applied at the beginning of next year. The most likely time point is the 2018 Barcelona MWC. By then, we will probably experience its true power through the Xiaolong 845 real machine given by mobile phone manufacturers.
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