Technology

measuring the ram usage on a blank desktop isn't really a "benchmark" and doesn't say anything about the OS itself

Benchmark: noun

1. a standard or point of reference against which things may be compared.

And frankly, whatever memory the OS hogs is less memory for applications to hog.

My laptop is 14 years old with a lightweight modern Linux distro. The "OS" - kernel, desktop environment , and system tray apps, a few widgets - uses 800MB of ram when it's parked at the desktop after startup. Which means the other 15.2GB is available to my applications, and it makes my wheezy old laptop perfectly functional for most things.