Intel recently introduced the Xeon 7500 EX: http://www.extremetech.com/article2/0,2845,2362102,00.asp.
The top model is $3692. But you might be content with something less powerful.
im planning to replace my server on my computer cafe with i9 and asus p6t7 board. one server per 20 host, a total of 5 server for the 120 unit. can it be use with the fastest processor today?