The server is very powerful. 8gb ram (8 X 1gb sticks) 2X dual core AMD Opterons, and a 300gb SCSI hard drive. I plan on running a DNS server, apache/php/sql/etc. for web hosting, and several game servers, such as Counter-Strike: Source, Natural Selection 2 (when it's released), Quake 4, Garry's Mod, and many others. I am having a little trouble trying to determine which OS to use, and I plan on hosting for other people so maybe Virtual Servers hosted on it. I have Ubuntu on it, but have been recommended CentOS and FreeBSD.