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Why didn't Huawei Kirin 990 processor use the latest Cortex-A77 architecture?

via:博客园     time:2019/9/7 12:33:01     readed:417

Author: Dust/Practice

IT Home Sept. 7 News Huawei officially released Kirin 990 processor chip on IFA 2009 in Berlin yesterday. However, the new chip is equipped with the Cortex-A76 microarchitecture of 2018 instead of the latest Cortex-A77. Recently, Yu Chengdong, CEO of Huawei Consumer Business, gave an answer in an interview with foreign media.

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After the press conference, Yu Chengdong was answering questions from foreign media

Yuchengdong said that in order to achieve nominal speed increase, some trade-offs need to be made in terms of energy efficiency, which will have a negative impact on battery life and equipment life. In other words, HUAWEI would rather let consumers have a battery to power their phones, instead of focusing on improving the speed of operation and sacrificing battery life.

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Yu added that future Kirin chips could also use Cortex-A77 architecture. When fully upgraded to 5nm process production, the new Kirin chip is likely to adopt Cortex-A77 architecture. The Kirin 990, like all existing flagship chips, is based on a 7Nm process. For the value of using Cortex-A77 for processors, ARM has previously said that Cortex-A77 is about 20% better than Cortex-A76 in terms of performance and power consumption, but Huawei has found that this is not what ARM said after experiments and surveys.

Kirin 990 is Huawei's top mobile processing chip, and the upcoming Huawei Mate 30 series smartphones are expected to be launched. It is worth noting that the new Tong Yuelong 865 processor also has relevant information at present. In the future, there must be a horizontal comparison of this processor which also uses A77 architecture.

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