Diff between Server Control and HTML Tags

Question

Hello,

my query is, we have server control (not all but few of them )like  image, hyperlink, textbox etc. but instead of using them we can use html tags i.e. img tag, a tag, input tags and even we can access them at server page (.cs) by using runat=server like

<img id="m" runat="server" src=""> 

and i think by using html tags performance will be better because we dont need pf rendering server control 

So, is there any special benefit to use these server controls