What purpose do GPU serve now and in the future?

-What purpose do GPU serve now and in the future? How do GPU function in a device (Brief summary)
-What is Nvidia’s future goals?
-Who and what are the Target Market? (Gaming consoles, Graphics, Gamers, Computers, and Automobil)

*SOURCES NEED TO BE QUOTED, PLEASE AVOID EXTENSIVE QUOTES OR TOO MANY QUOTES.

*Use this source and please add at least one or two more

http://www.mathcs.emory.edu/~cheung/Courses/355/Syllabus/94-CUDA/Docs/gpu-hist-paper.pdf