You need to configure the AE title and listener port in RadiAnt:
https://www.radiantviewer.com/dicom-viewer-manual/pacs-configuration.htm
Then you have to configure your workstation and enter the RadiAnt PC's data: IP address, listener port and AE title.
If properly configured, you should be able to send studies from the workstation to RadiAnt.
There are no specific hardware requirements as for the RadiAnt PC.