Google has come up with new version of its Internet search engine, nicknamed "Caffeine."

The company claims that the revamped search engine is faster, more accurate and more comprehensive as compared to the running Google search engine.

Nevertheless, dimensions like accuracy, indexing speed and comprehensiveness all looks like the same old Google. The changes are so subtle that it is not easy to notice changes between the old Google and the beta Google.

Developers and power searchers were invited to provide the search giant with feedback. Anyone can give a spin to the search engine at www2. sandbox. google. com.

Company's official blog reads, "Web developers and power searchers might notice a few differences, so we're opening up a web developer preview to collect feedback."

The revamp of the search engine will pose a challenge to the companies that have optimized themselves to get a higher rank in Google's existing engine.