Yes, especially as CPUs have got faster and put in more clever tricks to improve performance (bear in mind that this blog post is 15 years old). Modern architec

Yes, especially as CPUs have got faster and put in more clever tricks to improve performance (bear in mind that this blog post is 15 years old). Modern architectures have introduced modes to allow you to turn this off so that for your crypto code you can get back the not-data-dependent timing you wanted. For instance on Arm that's FEAT_DIT: https://developer.arm.com/documentation/ddi0601/2025-06/AArch64-Registers/DIT--Data-Independent-Timing https://developer.arm.com/documentation/ddi0601/2025-06/AArc... and the set of instructions you can safely use is listed. I believe Intel has a similar thing.