Transistors double every 18 months, parameters double every 4. @Synopsys Chief Product Officer Ravi Subramanian on the steepening curve facing chipmakers: "For the past 40 years, much of the advances in what was required and possible with a chip has been driven by Moore's law." "Moore's law allowed people to double the number of transistors within a piece of silicon every 18 months...that used to be the rhythm at which technology evolved and products evolved." "Today the driver for complexity is the fact that the model parameter count is doubling every four months." "So we're going from doubling every 18 months to doubling every 4 months." "The innovation required to keep up with doubling every four to six months is unbelievable in terms of what it requires."