speculative execution

Here is a more precise phrasing of the question: What would be the average speed decrease of a modern CPU when the speculative execution feature is disabled? Post your opinions backed up by reasons. That is, don't just say "it would be about XX% decrease", you need to explain why are you...

This thread is currently discussing the topic: Performance boost of Speculative Execution: what's the speedup? (Spectre-related discussion) -- additional details are in the post #16 -- Original Post: Title: Speculative Execution and Branch Prediction I'm starting this thread to discuss...