I own a dedicated server and run about 50 sites on it ..its a Intel DUo, Cent OS, Cpanel with 4GB of ram. It rarely uses the entire spec but occasionally the CPU usage spikes so I need the spec anyway.. I plan to host another 30 sites, mainly built on WP and Joomla , each receiving about 100 UV a day ..what kind of spec should I go for ? I am really confused only in the RAM part !!