With Prism, Microsoft wants to complete Windows on ARM


In fact, like Rosetta 2 on Apple’s Silicon Macs, Prism allows applications originally designed for Intel processors to run on the new ARM architectures, almost transparently to users. Early evaluations of Prism show impressive performance gains, mainly due to specific optimizations made by Microsoft.

To fully understand the importance of Prism, it is necessary to look back at the history of Windows RT, the operating system launched by Microsoft in 2012. The aim of Windows RT was to offer a version of Windows optimized for ARM tablets, but the lack of emulation for x86 applications turned out to be a major obstacle. Many popular applications, including pre-installed applications such as Windows Media Player, were unusable, which largely contributed to the commercial failure of Windows RT. Today, with Prism, Microsoft seems to have learned from its past mistakes, finally offers a viable solution for running x86 applications on ARMwithout significantly reducing performance.



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