Theoretical physicist Michio Kaku believes Moore's Law has about 10 years of life left before ever-shrinking transistor sizes smack up against limitations imposed by the laws of thermodynamics and quantum physics. That day of reckoning for the computing industry may still be a few years away, but signs of the coming Moorepocalypse are already here. Just ask chip maker AMD. The company's Chief Product Architect John Gustafson believes AMD's difficulties in transitioning from 28-nanometer chips to 20-nanometer silicon shows we've reached the beginning of the end.