It is to be checked that the website is downloaded within the minimum time is very beneficial to capture the attention of the visitors.Visitors will appreciate your site if it takes very few loading time.
Indeed, Page speed matters a lot. In today's time no one has time to wait. There are lots of websites, visitors will simply go to other website if your page load time is sufficiently high. Google provides page speed tool to improve your site performance. Here is the link https://developers.google.com/speed/
Well i think about google consider about your load time of WebPages is a factor for ranking results, if you are reduce you load time for your website then you will get more higher rank in SE of google.