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Random CPU usage spikes

  • Chrome
  • Intel i7
  • CPUs
  • Homebuilt
Last response: in CPUs
March 25, 2013 12:46:32 PM

Hi All,

I'm currently using a homebuilt PC with the following spec:

    i7 3770K
    GTX 670
    16GB Ram
    Windows 7 64bit Home Premium running on a 128GB SSD

All of a sudden yesterday when running Google Chrome, i noticed some random cpu usage spikes on all four cores. Even when idle the system will experience intermittent spikes. The big change ive noticed is when i start up the computer and start up chrome. When starting up chrome, the cores will spike randomly and show 60% usage, then after a few seconds they drop. It happens intermittendly with other programs normally upon their startup. For example starting up Skype c0 peaks at 41%
I've ran the Intel Diagnostic tool, which has shown as there being no problems, so i'm really stuck now.

Any help would be greatly appreciated.

More about : random cpu usage spikes

a b à CPUs
March 25, 2013 12:57:44 PM

um, those spikes are normal. you use up a lot of CPU resources to start up any software, and there's a ton of stuff running in the background for the average user even when idle. it is why there are multiple sleep states for your computer
March 25, 2013 1:23:51 PM


Having never seen these spikes previously, i just thought it was out of the ordinary especially after searching the web.
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a b à CPUs
a b B Homebuilt system
March 25, 2013 1:37:53 PM

If they are just little spikes, that's pretty normal. The ones you have to worry about are sustained CPU usage when you aren't doing something specific.

I'm on an i5 and I just closed a remote desktop session and all 4 cores hit about 50% for 3 seconds. The processor is doing cleanup/prep work whenever you start/stop a program, even if it is low CPU.

Also, don't underestimate how much CPU web browsing takes. Web pages are very active these days, doing more than many stand-alone apps would have done in the past.
March 25, 2013 1:58:35 PM

Thanks, that clarifies it. They are spikes for a short duration, say 1-3 seconds so it seems there is nothing to worry about. Now I can get back to work!

Thanks for the help!