Vodahost provides what is called shared webhosting. Each server (the computers that run the websites) have a couple "shared" ip addresses. These are used for all websites on the server unless they are assigned a dedicated ip address. If you have a dedicated ip address then your website has its own ip address that is not shared by others. It is required for SSL to have a dedicated ip address, but if you don't plan on using SSL (which you are correct, you need for any circumstance where your website processes any payment, unless it goes through paypal) then you don't need a dedicated ip. Having a dedicated ip has no effect on how fast your website is. Only the connection to the internet of both the server and the website users.

I'm not sure what templates you are talking about so I can't help with that

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