Powerful Smartphones circa 2013
Food for thought:
The first IBM PC was introduced in 1981, and contained an Intel single-core microprocessor. It took Intel 26 years from that time to build a quad-core processor.
Turn to smartphones (don't mention Crackberries to me, please!). Most of us consider smartphones as having gained prominence in mid-2007 with the introduction of the first-generation single-core-processor-based iPhone. The first quad-core processor went into a smartphone by mid-2012, about 5 years!