![]() ![]() In brief, the latency depends on the state in which the core currently is, and what is the target state. And this leads to another question: for how long should I run this "spooling-up" code? Probably one second is enough, but what if I'm trying to minimize this - what's a safe amount of time for "spooling-up" code to run, to make sure the CPU will run the main code at the maximum frequency from the very first instruction executed?Įvaluation of CPU frequency transition latency paper presents transition latencies of various Intel processors. I'm wondering what slice of my benchmark is running at 1.3 GHz and what is running at 4.3 GHz: 1%/99%? 10%/90%? 50%/50%? Or even worse?ĭepending on the answer, I'm thinking it would make sense to run some CPU-intensive code prior to starting the benchmark as a way to "spool up" TurboBoost. The thing is, right before this piece of CPU-intensive code is run, the CPU is essentially idle (and thus the clock speed will drop down to say 1.3 GHz). This is in the context of benchhmarking some CPU-intensive code which takes a few 10s of miliseconds to run. ![]() I'm not even sure this is up to the hardware or the operating system. The question is: how long does it take to go from 1.3 to 4.3 GHz? 1 microsecond? 1 milisecond? 100 miliseconds? It does not store any personal data.Just like a turbo engine has "turbo lag" due to the time it takes for the turbo to spool up, I'm curious what is the "turbo lag" in Intel processors.įor instance, the i9-8950HK in my MacBook Pro 15" 2018 (running macOS Catalina 10.15.7) usually sits around 1.3 GHz when idle, but when I run a CPU-intensive program, the CPU frequency shoots up to, say 4.3 GHz or so (initially). The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is used to store the user consent for the cookies in the category "Other. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". ![]() These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. Ignore all search results and click only on the one that begins with ‘.’ On this page, under Processor, see if the word Turbo Boost is mentioned or not. Now, copy the entire first line and paste this in Google search box. To check this, click on the Apple logo from top left and then on About This Mac. How to Disable or Enable Turbo Boost on Macīefore you proceed, make sure whether your MacBook has Turbo Boost technology or not. Just follow the below-mentioned steps to learn how to disable Turbo Boost on your Mac. So, it’s better to keep it off while you are on the go and need to work on your MacBook. If you disable Turbo Boost, then you can gain additional 25% of battery life, which is huge. On the other hand, having this function active eats a lot of MacBook’s battery. Sadly, Apple has given no control to the user in regard to disabling or enabling this function. These processors have a technology called Turbo Boost, which speeds up the processes. In case you aren’t aware, the Apple MacBooks are loaded with Intel Processors. ![]()
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