> If ARM-based chips can be "orders of magnitude" faster than x86, they'll already be dominating datacenters. Raw compute performance is the wrong metric for m

> If ARM-based chips can be "orders of magnitude" faster than x86, they'll already be dominating datacenters. Raw compute performance is the wrong metric for measuring data center worthiness. The correct metric is performance per dollar. ARM in the DC currently suffers a lack of ARM-specific code optimizers and has to play catch-up in this regard. Amazon recently focused a squad of engineers on adding ARM 64 optimization to the Zend Optimizer in PHP 7.4 to an incremental effect, but then as some cruft is removed on the PHP 8 roadmap, that gain is around 15% in raw performance. Combine that with 20% lower pricing for comparable Graviton2 EC2 instances, and you’ve got a significant cost motivation to migrate to the ARM platform. https://aws.amazon.com/blogs/compute/improving-performance-of-php-for-arm64-and-impact-on-amazon-ec2-m6g-instances/ https://aws.amazon.com/blogs/compute/improving-performance-o... Expect AWS to dedicate engineering resource to similarly bring projects like Python, V8, LLVM, etc. into the ARM-future.