Where to start: not with hardware, but with tasks

The first question is not 'which processor,' but 'what will the server be doing in three years?' Make a list: 1C and DBMS, files, email, video surveillance, virtual machines. Each task has its own critical resource: for 1C, it is core frequency and disks; for video surveillance, it is bay capacity; for virtualization, it is memory. A universal 'do-it-all' server is created when these requirements are added together, not averaged.