Processor increases speed unexpectedly after roughly ten minutes of inactivity
Processor increases speed unexpectedly after roughly ten minutes of inactivity
Hello PC enthusiasts, I’m reaching out as someone who isn’t familiar with PC tech. I assembled my first machine in May and it performed well. In July, I began observing that when I left the computer idle, the cooling fan would spin excessively. Checking Task Manager confirmed the CPU usage dropped back to normal levels—around 4-6%. I recorded a ten-minute idle session and noticed the CPU briefly climbed to 30%, but the fan activity didn’t match that intensity. When I opened Task Manager quickly, it showed high CPU usage (about 58%) for a moment, often accompanied by AntimalwareExecutive or similar entries. After a brief pause, the fan slowed and the malware disappeared. Occasionally, the system just felt sluggish without any input, with the CPU hovering near 15% and sometimes spiking unpredictably. Today was one of those instances. I suspect the antivirus software might be interfering, especially since it appears in the top list during idle periods. I haven’t changed my fan settings, but they might need adjustment. My main concern is this erratic behavior—it’s disrupting performance. If anyone has insights or solutions, I’d really appreciate it. Feel free to share any details about your specs for reference. Happy holidays!
Sure, that's completely typical. It's just how Windows is designed. Once the background update starts while idle, you'll need proper cooling—either fans or a better thermal solution—to avoid overheating. Lower fancurves might make it run hotter instead, which can lead to performance drops and other issues.
This sudden increase in activity seems normal for Windows updates. What you're experiencing could be related to the software itself or background processes. It might help to investigate recent changes or check system logs for clues. Let me know if you'd like more details!
It mainly comes down to the processor and cooler, though Ryzen isn't always better than Intel in this area. The cooler definitely makes a difference—noise levels drop significantly with a good model like Noctua. Regarding Windows Defender, it's unusual for it to use such low CPU usage (around 2-3%) on my system; it should be fine as long as you follow the guidelines and check the updates.
I'm relying on the Sledgehammer tool, but it still handles indexing less frequently—much softer, not as intense as during a Windows update. Defender functions well, stays under 3% usage (varies with CPU, especially a Pentium 1 would likely be limited).
I understand this task can put a noticeable strain on your CPU, especially when idle. It seems like the recent updates to Microsoft Defender might have triggered increased usage. The occasional 10-20% CPU consumption could be normal after such changes, but if it persists, checking for background processes or optimizing settings might help.
I own a Ryzen 7 7700x and heard it tends to get quite warm. While monitoring temperatures during Marvel Rivals, both CPU and GPU stayed near 70°C—just not at peak, which is why the Thermalright fan works well even though it’s loud. I suspect there might be a setting that makes Antimalware more active; turning it off or adjusting its frequency could help.
Today the settings were consistently set to 10-20%. Check the screenshot from my first message. It might have been due to an update for Microsoft Defender, though I'm not sure.