@Cattleya: Make sure you download the zip package, because the installer does the following:
“The kernel mode driver used by CPU-Z is installed on the system, that avoids to install / remove it at every run.”
The portable version leaves no driver behind, just tested it.
@kc: I used to do sysadmin for a small non-profit org. 7 pc’s and 2 printers, no big deal. I carried all my tools on a pendrive. Off course I had admin-rights, but this is a typical scenario a lot of us are in, so it’s not entirely useless, portable is the way to go for sysadmins 😉