This site gives the minimum requirement, which is not a problem. For my application, the production requirement is 2GHz Processor and 2GB RAM. But I don't know what to decide for Test server. Should I go for half of the production configuration or quarter or on what basis should I decide. The number of users and number of transactions would be very less in test comparted to production, but need to make sure the SPs and Queries that work in production also work in test server.