State the specification of high-end server
A mid-range or high-end server with the following specifications would be sufficient for a medium to large organisation:
A Pentium III Xeon based server (dual processor recommended)
2×40 GB HDD (one extra recommended for backup)
128 MB RAM (256 MB recommended).
As it is, normally there is absolutely no restriction or limits on the number of nodes within an Intranet. Limits exist only on use of licenced software or on user restrictions on the network environment.
If anyone intends to have a higher configuration such as installation of four processors in place of the conventional one processor, the cost factor for each processor should be considered first.