Computex is a grand gathering for the PC industry. The industry gathered together. The x86 platform played a leading role in the show. Various laptop desktops competed with each other. Unexpectedly, ARM chose to announce the Cortex-A75/A55 architecture at the conference. , And to do its best to pull AI, machine learning, AR/VR and other popular keywords desperately on their own, it seems to be to attract people's attention from the field of PC-based computing to attract mobile computing.
The architecture used by ARM in the new generation of mobile computing core is still the big and small nuclear approach - big.LITTLE, but this time they changed the name: Dynamiq. In order to meet the big head like Gao Tong who likes to do more work in his own SoC, Dynamiq now allows a more flexible size and core collocation, as long as the manufacturers have the strength to toss, they can even use a big core + 7 small core This approach gives the entire eight-core - this combination, both taking into account the long-term life, but also save the money, but also to ensure a certain degree of performance.
According to ARM, Dynamiq redesigned the memory subsystem and adjusted the cache mechanism of the SoC. This allows the Cortex-A55 to double the memory throughput of the Cortex-A53. In a typical application scenario, The overall performance increase is between 10% and 30%, single-thread efficiency is increased by 18%, energy consumption is reduced by 15%. The increase of these indicators is very friendly to AI performance, and the 50-fold improvement sounds amazing. However, the term “typical†is somewhat inappropriate for Dynamiq, because in the ARM design blueprint, the new architecture is 10 times more customizable than the old version, with over 3,000 different core configurations and sufficient Make use of the imagination of those manufacturers.
Of course, when ARM benefits AI, it also wants to leverage AI. Based on the performance of the Cortex-A73, the large-core Cortex-A75 has a double-digit increase in all aspects: average performance increase of 22%, memory throughput increase of 16%, and Geekbench's test performance can be increased by 30%. With the improvement of IPC efficiency alone, the Cortex-A75's single-threaded performance will increase by 20%.
The Cortex-A75's chip area is approximately 2.5 times that of the Cortex-A55 small core, which should be used in infrastructure, automotive, and large-scale mobile applications (generally VR/AR/HD gaming) in its ARM plans. Also improved to 2W. However, for large-screen mobile devices such as laptops, which are more tolerant, the performance requirements are more important, and 30% of this value is necessary. The goal of ARM's establishment of large-screen computing is also here. The ARM version of Windows made it rekindled its desire to enter Intel’s own territory.
With the CPU, of course, the GPU can not be reduced today with such a high level of integration. With the size of the nuclear core Mali-G72 is equipped with 32 colored cores, compared to the previous generation Mali-G71 energy efficiency increased by 25%, and the unit density performance is also 20% of the strengthening. This GPU is the most direct expression of ARM's investment in machine learning. ARM is optimized specifically for the design of G72, and takes care of the machine learning inference engine rather than the training engine. This will enable the ARM processor to better query a class of The role of AI in the application is reflected in machine learning running software, which means that the value of 17% is improved.
It was released yesterday. Actually, ARM put the design of the Cortex-A75/A55 and Mali-G72 back to their partners early last year, although it expects that the mobile device with the new architecture may be The first quarter of next year will appear in batches, but some Chinese manufacturers are willing to accelerate the pace, so we are likely to see Huawei and other manufacturers take the lead in adopting new-generation chips on their flagship models in the second half of this year.
Microsoft is unwilling to let RT fail, and ARM wants the Windows boat. Can the Cortex-A75/A55 let it have a foothold on Intel's private yacht? It remains to be verified.
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