Determining Hardware for Conference Bridge

Does someone has the information required to determine the server performance required to support various sizes of audio only conferences. 10, 20, 50, 100 concurrent user. Centos will be the system OS. Conceptually there will be ‘2-5’ conference bridges available. Is there a formula to determine the memory and CPU requirements. Just need to get pointed in the right direction.

There is no such formula or at least I havent been able to find it, I suggest you bench mark and monitor system resources, to determine the correct CPU and RAM needed