Can you believe it hardware is evolving faster compared to software. True, today dual core and quad core processors are very common, but software development is lacking. Millions have been earmarked to rewrite software so that these new breed of processors can be utilised optimally. But work is still in research stage in universities.
Intel is planning to come out with a ten core processor for users in near future. But true advantage could be taken only if true multithreading is achived by rewriting programs for parallel processing.
Till then your processor just saves some bill on electricity bill by being less heat producing.