ARM announces Cortex-A75, Cortex-A55 and Mali-G72

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ARM has taken the wraps off the next generation of its mobile CPU and GPU design. This includes the flagship Cortex-A75 CPU, which will replace the A73 and the Cortex-A55, which will replace the A53. There will also be a new GPU, the Mali-G72.



The Cortex-A75 brings 22% additional performance over the A73 when compared at the same frequencies. It also has 33% higher FP and NEON performance and 16% higher memory throughput. In benchmarks, the A75 performs 48% better in Octane and 34% better in Geekbench. A75 is also more efficient than A73, which allows it to run at a higher clock speed while consuming the same amount of power. A75 has also been designed with notebooks in mind, such as Chromebooks and upcoming ARM based Windows machines, and can run at 2W power for even more performance.
 


A55 is the successor to the highly successful A53, which runs on 1.7 billion units worldwide. It is the highest performance mid-range CPU from ARM, with 2x more memory streaming performance and 14% higher Octane performance than A53. It has 18% higher single threaded performance than A53, 38% higher FP and NEON performance, and 20% higher Geekbench performance.



Both new CPU are the first from ARM to be based on the new DynamIQ technology. DynamIQ has been designed from the ground up for performing artificial intelligence (AI) and machine learning (ML) tasks locally on the device instead of delegating them to the cloud.



DynamIQ is an updated version of ARM's big.LITTLE that provides even more flexibility and scalability in the way SoC are designed. Now, instead of having different CPU class cores in different clusters, they can all be in the same cluster. This means that while previously the A73 and A53 cores would be in different clusters, the A75 and A55 cores can be in the same clusters. DynamIQ also allows more flexibility in design, so an OEM can have one big core like A75 and seven small cores like A55. Each cluster can have up to eight cores and there can be up to 32 clusters, meaning up to 256 cores per CPU. Having all your cores in the same cluster improves performance as there is less switching between clusters involved.



ARM also announced the Mali-G72 GPU, which is the successor to the G71. G72 is built on the same Bifrost architecture as its predecessor and boasts of a 40% increase in performance over the G71. G72 also has 25% higher energy efficiency, 20% better performance density, and 17% better machine learning efficiency.

These new designs should start appearing in mobile devices by the end of this year. If you want to read more about this, AnandTech has a more detailed breakdown here.


Source: gsmarena
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