Discussing how CPU speed is managed and regulated.
Discussing how CPU speed is managed and regulated.
Hello everyone, I'm curious about how CPU frequency is managed in Windows. We often hear about "boost clocks" and everything, but I'm well-versed in the language and its uses. Still, I haven't usually seen a CPU increase its clocks during simple tasks like exploring the file explorer or browsing the web. It seems to vary unpredictably across different multiplier settings, without any consideration for what's happening on the screen. Only when I push it harder or run more demanding applications do I notice an improvement—higher clock speeds. I run several programs to track system performance and wonder if, since they only update a few times per second, the CPU might actually boost briefly to complete a task and then drop back down before the monitor refreshes. In short—can a CPU change its speed too quickly for users to see clearly? Anyone confirm this? I also know about software-based Speed Shift EPP and hardware-controlled EPP. Windows appears to behave differently at the same EPP levels compared to hardware-controlled SS. Hardware control tends to jump more readily to higher frequencies, and you can always set it to a maximum manually. So a question arises—does hardware-controlled SS really boost performance? I've heard it might run faster than when Windows controls it, but I have no way to verify. Additionally, if the default Windows EPP doesn't rise as much, does that mean I'm losing speed? If so, should I manually set it to a lower value? Thank you for your thoughts!
AMD highlights Ryzen's 1 ms response speed in its promotions. Intel adjusts CPU frequencies by hundreds of times each second. Use hardware clock control unless overclocking. The operating system recommends specific behaviors, such as moderating turbo usage.
Considered this. I’ll move to hardware-controlled SS. Since I’m using a laptop, locking the frequency high enough would hurt single-thread performance. Still, I can push it to use the maximum multiplier available with the active cores. I haven’t really felt the big improvement before, maybe the OS is intentionally saving about 5% power to conserve battery. We’ll find out what happens.