Please note, this is a STATIC archive of website www.softperfect.com from 04 Jul 2018, cach3.com does not collect or store any user information, there is no "phishing" involved.
Perhaps you are looking at a wrong tab? For example, the space occupied by a RAM disk does not show up in the Processes list because the memory doesn't belong to any specific process.
Please check the Performance tab as shown in below. You should see a reduction in the available memory once you create a RAM disk.