I run a XenForo forum and at any given time there are between 8~20+ users on the forum. Will 768MB be enough ram for XenForo? And how many current users do you think I can push with 768MB of ram?
Im my experiance, if XenForo is anything like vBulletin/IPB, 768MB RAM with cPanel should be able to hold over 100 active users at a time. In fact, i've seen forums running on shared hosting platforms with 50-70 active users.