The cores have a clock of 4.2 Ghz.
What we want to install:
Own dynServer wrapper (MC), web server, vllt Ts3, automations (backup, Qol), Maven repository, MariaDB server, MailServer and Ts3+ Discord Bots (music & controlbots).
How much RAM and cores do my vServer need?
There will be many Minecraft servers that will have big plug-in systems.
With so much I would advise you already to a root server with Linux as a system but please only if you are familiar with the establishment of servers, as this can go awesome otherwise!
Because of the amount of RAM that is such a thing, because with MC server, among other things depending on the installed plugins, the amount of users on it, etc. But all in all, I would say, take too much rather than too little, 32 GB AT LEAST I would recommend 64 and more, since Minecraft is really hungry RAM.