A handy reference if you can manage to find the equivalent System Properties as that gives detailed CPU information or a handy little utility CPU-Z http://www.cpuid.com/softwares/cpu-z.html very detailed CPU information.

That said your CPU isn’t a slouch, but it the test whole files seems too much for it.

I just ran a Quick scan with test whole files, it took just over three minutes 0:03:34 for 6.8GB 2147 files 5706 folders, this is generally the same as my average for a Quick scan, so for me not much difference. I haven’t done this for a Full System Scan yet as I rarely run this scan, but when I do it isn’t too long either as I don’t have masses of data on my system, very little in the way if media files or images. I don’t collect tones of applications if it isn’t used often, generally it will be uninstalled.