BIOS settings's look fine, it might not be the 'apps' that are using up the cpu but a service in the background like AV. I would suspect that if you was to install a fresh OS that light load would certainly disapear. It'll be a tedious task to find which background service that is using up the cpu, as I said before take a look at task manager and filter the window by cpu usage and see what service/process is using the cpu.
If you can post a screenie of task manager running. Thanks
At any rate without making a minor change to correct the situation I will let it be. I still remember the Q9650/775 platform running at constant high speeds and voltages...never using EIST or the other energy saving selections and it was just fine to do so. I assume Sandy can take a bit higher speed and a bit lower volts on a 24/7 basis?