Then i tested TeraCopy, which i have been quite familiar for many years now. I found that the speed of file reading were almost the same, and it hardly matters. In fact i would add that TeraCopy can be used to even delete/ test/ copy/ move files in Windows. It has better interface with more options and customized preferences than this dumb software Extreme Copy. 100% votes for TerCopy against ExtremeCopy, unless you want a simplified version of file handling software.