For HPE the options vary most, so there is quite a bunch of configuration possibilities available, as you can see in the following table:
Source: https://azurestackeaiblob.blob.core.windows.net/content-file/HPE%20data%20sheet%20for%20customers%20-%20HPE%20ProLiant%20for%20Microsoft%20Azure%20Stack.pdf?sv=2015-12-11&sr=b&sig=Kc6vdPNIzS7s5xwFYLuvhJgC0zoiTAEOi7mdf4%2BUsq4%3D&st=2017-08-17T20%3A48%3A45Z&se=2017-08-18T20%3A53%3A45Z&sp=r