This one inside 845 is already 3rd generation. Started from 820.
Thanks for highlighting. With a bit of googling, there were indeed some implementations of AI in the hardware a few generations back. However, 845 seems to be quite a major step to me though in terms of speed and power efficiency. Mate 9 also has a bit of AI-based algorithm inside. Whether the AI can take off really depends on the apps developers.
Here's something more technical about the hexagon DSP in the new Snapdragon processors:
Qualcomm Hexagon 685 DSP is a Boon for Machine Learning
https://www.xda-developers.com/qualcomm-snapdragon-845-hexagon-685-dsp/
Hexagon vs. the Competition
The Snapdragon 845’s Hexagon 685 DSP comes as an increasing number of original equipment manufacturers (OEM) pursue mobile / on-device AI solutions of their own. Huawei’s Kirin 970 — the system-on-chip inside the Mate 10 and Mate 10 Pro — has a “neural processing unit” (NPU) that can reportedly recognize more than 2,000 images per second at just 1/50th the power consumption of an average smartphone CPU — but of course, that’s marketing, and Huawei has struggled to gain a foothold with developers to really make such computing capabilities shine. And the Apple A11 Bionic system-on-chip in the iPhone 8, iPhone 8 Plus, and iPhone X has a “Neural Engine” that performs real-time facial modeling and up to 600 billion operations per second, something that the company has proudly incorporated into their marketing efforts and feature set (famously via animoji).
But Qualcomm says that the Hexagon’s platform agnosticism gives it an advantage. Unlike Apple and Huawei, which largely force developers to use proprietary APIs, Qualcomm sought to support some of the most popular open-source frameworks from the get-go. For example, it worked with Google to optimize TensorFlow, Google’s machine learning platform, for the Hexagon 685 DSP — Qualcomm says it runs up to eight times faster and 25 times more power-efficiently than on non-Hexagon devices.
Qualcomm Hexagon DSP: An architecture optimized for mobile multimedia and communications
https://developer.qualcomm.com/download/hexagon/hexagon-dsp-architecture.pdf
Slide 3: "Hexagon DSP is evolving for use beyond voice and audio to
computer vision, video and imaging features"