What are the minimal memory usage for Windows 2008 & 2012 server editions?
I'm referring to all things OS-related. The machine would be a VM with a dedicated web server software, that wouldn't rely on the OS (ie. no IIS, no domains, minimal local database) and wouldn't use much memory (less than 50 MB), though CPU usage might occasionnally spike under load.
I'm asking because there are options for hosting where you're charged by the MB of RAM, and for a such a low-overhead server, all the RAM usage would essentially be used by idle OS services. So anything that can lower the baseline cost would be great.
Is 2008 a better starting point for low memory usage? Of can 2012 be coerced lower?
Any pointers on the above?
PS: I've managed to get a standard Windows 2008 down to 192 MB Physical when no RDP sessions are active, by stopping all unnecessary services, disabling COMPort, Floppy & CDROM devices, and minimizing cache file size with the SetSystemFileCacheSize() API.