What are the system requirements for servers nowdays?
I am organizing some QW-LAN activities and I am wondering what kind of server specs do I need?

Player count max 10-15.


Currently I have:
- Raspberry Pi (I am doubting this is powerful enough, but just for the fun)
- Acer Aspire one
- some core 2 duo desktops

Do I have to look for something stronger? What does a server need for 10-15 players? Ram, or CPU?

the rpi won't do, the core2duo might be enough