Last year, ARM released the Cortex A73 and Mali G71 architectures on Tech Day. This year, they will bring their next-generation products A75 and A55 architectures, as well as the MaliG72 architecture. On May 26, it was reported that the foreign media had successfully dug into the official PPT of ARM and completely disclosed the relevant information of the three new frameworks.

Cortex-A55 architecture: redefining the energy efficiency ratio of small cores

The A55 can bring twice the performance, 15% improvement in energy efficiency ratio (note that it is energy efficiency ratio, not energy consumption), and 10 times the customizability. Officially, A55 is the framework with the strongest performance among mid end products. In Geekbench v4 and other tests, compared with A53, it can bring 1.14 times to 1.97 times of performance improvement.

In terms of configurability, it provides more than 3000 configuration possibilities, including cache size, L2 and L3 cache NEON/FPU、 Asynchronous connection and encryption modules can be selected by yourself, and can form clusters with 1-8 cores. This is the first architecture that can contain 8 cores in a single cluster (it is estimated that MediaTek will like it very much).

Cortex-A75 framework: the strongest framework

Compared with A73, A75 architecture has 20% performance improvement and 40% basic performance improvement. The ultimate performance is 1.3 times higher than that of the A72 framework in 2016 and 2.1 times higher than that of the A57 framework in 2015. In Geekbench v4 and other tests, compared with A73, it can increase from 1.16 times to 1.48 times. PPT also mentioned that A73 is still the largest core architecture with the highest energy efficiency ratio, 28% higher than that of A72.

The most surprising thing is that the preset frequency of the A73 architecture given by ARM is 2.8 GHz at 10 nm (in fact, the A73 on Kirin 960 is only 2.36 GHz), while the A75 is as high as 3 GHz at 10 nm.

DynamIQ big. LITTLE architecture

And big The LITTLE big and small core architecture has also been updated, with the new DynamIQ big The LITTLE architecture is based on DynamlQ technology, which can bring twice the single thread performance improvement in the similar core area, and simplify the software and hardware In terms of software, this architecture supports EAS technology (Energy Aware Scheduling energy consumption awareness), but in terms of hardware, the official statement is vague, only mentioning that the purpose can be extended beyond the mobile platform, with higher product differentiation, energy efficiency ratio and user experience.

Its support Three way superscalar processors, each core has an exclusive L2 cache at the same speed as the core. his Declare that On the A73 architecture, the single thread performance can be improved by 20% with the same power consumption. With DynamIQ technology, you can use DynamIQ shared units (DSUs), share L3 caches within clusters, and support the latest A55 architecture.

MaliG72 GPU architecture

Officially, it is claimed that it can bring 1.4 times more improvement than the products in 2017 (the G71 architecture should be implied here), which has been optimized for games, machine learning, mobile VR and other scenarios. The introduction of new rendering technology significantly reduces the occupation of write bandwidth. Compared with G71, the MRT G-Buffer and PLS G-Buffer can save 42% and 45% of the write bandwidth respectively. In terms of machine learning, it has brought about a 1.15 times improvement in energy efficiency ratio. The whole GPU architecture can bring 25% energy efficiency improvement, with 32 shader cores, 20% performance and 17% GEMM improvement.

The latest news is that Huawei, which reportedly launched the G72 architecture, has bought the G72 architecture license (but not the A75 architecture). It is likely that the architecture of the next generation will be seen on the next generation Kirin processor (I hope Huawei will not follow the current path of low core and high frequency).

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