Hardware for the wwService / ww.dll machine:
 
Hardware sizing is based on CPU cores.
For each request per second, 1 core is needed.
4 worker processes per core
4GBytes RAM per core
At 2 requests per second or the use of Real Time Print At Home Tickets, a separate wwService/ww.dll for pages and ticketing is necessary. Splitting the pages and ticketing support is preferable.