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Sorry to derail a bit, but as a user coming from Windows, how does a process use more than 100% of the CPU? :confused:
 
Its to do with multi-core CPUs. So on a dual-core system, if you max both CPUs out then it would be 200%, on quad-core systems, maxing out all CPUs will put you at 400%. This doesn't take into account hyper threading which shows up as virtual CPUs, so a quad-core with hyper threading can max out at 800%. Hope that answers your question
 
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