I've got a shared hosting account, unlimited sites, unlimited GB, unlimited bandwidth etc etc.
Of course because it's shared and a cheap one at that - there's too many sites on each server and it all runs slow due to lack of RAM.
What I've found is that my plain HTML/CSS/JS sites run an awful lot faster than my WordPress sites on this hosting and I was trying to work out why.
I'm not exactly sure how a browser sends a request for a page and the full process of request and delivery, but are my HTML sites running faster as they are just serving code to the browser, whereas the WordPress sites are having to make calculations from the database to build each page before it is delivered ... is that correct, or am I completely off course ?