As Arm positions itself for IPO next year, the company is positioning itself as a leader in mobile, which includes not just smartphones and tablets, but increasingly Chromebooks and PCs as well. To that end, the company just released a new series of mobile cores for the class of 2022.
The balanced performance core, the A715, does a lot of the heavy lifting on performance workloads like gaming where sustained performance, thermal dissipation, and power efficiency all must be balanced.
The Cortex-X3 has the most improvements and reaches new performance heights. Arm beefed up branch prediction for greater accuracy and lower latency. The front-end pipeline was shortened and improved to reduce instruction execution stalls . The core instruction decoder width and the number of ALUs were increased. Data prefetching coverage and accuracy improvements allow more efficient execution.
The CPU interconnect bus DSU–110 now supports up to 12 cores, which can be any mix of X3, A715, and A510 CPU cores. A typical design might use one X3 core, three A715 cores, and four A510 cores, but there’s no requirement for the number of different types of cores. Arm even hinted at a twelve-core design that mixes just ultimate and performance cores for desktop-level performance.
Arm’s plan is to keep pace with the x86 vendors is by offering a new set of cores every year. Arm plans to add a set of new features to the entire Arm architecture every year and revealed its roadmap to 2024.For 2022, the company added matrix multiplication to GPUs for improved AI performance, the Arm Compute Library optimizations, ability to update ArmNN and ACL via Google Play Services, and a new Cortex-M85 real-time controller with the Helium machine learning extensions.
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