ARM has introduced new features to the ARMv8.1-A architecture, enhancing both security and performance of the chip. This new architecture is an evolution of the existing ARMv8-A standard, which is currently used in devices like the Apple A8 chip and various Android processors. The improvements are expected to have a more significant impact on larger systems than on mobile devices, according to David Brash, head of the ARM architecture and technology group.
The updates will particularly influence server performance, as ARM aims to expand its presence in the server chip market. Major companies such as AMD, Cavium, AppliedMicro, and Qualcomm are either developing or investing in ARM-based server chips. The first test chips based on the ARMv8.1-A architecture are expected to be available next year.
Apple was the first to introduce a 64-bit chip using the ARMv8-A architecture, and it may adopt the new version in the future. However, it typically takes time for new processor architectures to reach consumer devices. For example, the ARMv8-A was introduced in 2011, but it wasn’t widely used until the iPhone 5S came out last year.
In his blog post, Brash emphasized that while architectural improvements are important, they take years to be fully integrated into chip designs. He also noted that other design choices can have a bigger impact on system performance.
Currently, ARM has issued 57 licenses for the ARMv8-A architecture, and more products with ARMv8-A chips are expected to hit the market in the coming years, including 64-bit smartphones and tablets.
The ARMv8.1-A upgrade includes enhancements in memory addressing, security, virtualization, and data throughput. Software designed for ARMv8-A can run seamlessly on ARMv8.1-A chips. Additionally, ARM has collaborated with partners during this architectural upgrade to ensure smooth implementation and support across the ecosystem.
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