Google Instant works only on these browsers v5/6, Firefox v3, Safari v5 for Mac or Internet Explorer v8.
Google Instant helps you don’t waste time while browsing on the internet you may save some around 2-6 second for one search.
Google has launched a program named Google Instant which shows the results while you type on the search bar. For this program they haved used all the technology and infrastructure to help you recive better search results and of course much faster. The reason for doing that was that they saw that people are typing slowly because they have to remember the search or the website.
With this change you get to the right content faster and you don’t need to type all the search term. And while you type you can formulate a better search term.