Try out the docker-compose version on your machine/server, or just play with the online demos mentioned on the page above ^.
Bahmni will run smoothly on a server with the following minimum configuration. The following server configuration is for running complete Bahmni with all sub-systems, i.e. OpenMRS, OpenERP and OpenELIS.
CPU - Quad core (8 core, if in future you would want to run PACS integration from the same server)
Memory - 8 GB (16 GB, if in future you would want to run PACS integration from the same server)
Hard disk - 500GB (doesn't include the disk space needed for PACS integration or if you plan to upload a lot of files/images)
If you are running on OpenMRS sub-system then 8 GB is more than enough.
It is highly recommend to have one more machines as a backup machine that can take over in the scenario when the main server fails due to hardware / electrical issues. This backup machine can also be used to store database backups or old log files, and for load intensive reporting.
The minimum hardware requirements for test installations 8GB RAM. The installation with 4GB RAM and 2 CPUs but might lead to problems, e.g. the necessity to start services manually (see Install Bahmni on CentOS#Bahmni Services).
bahmni -i local --skip openerp,bahmni-erp-connect,bahmni-reports install
Without this it might be necessary to start some services (e.g. openmrs) manually after the installation or a system reboot