In addition to that, nvidia has been riding on rising clockspeeds the past few years, the current Pascal architecture isn't much different than the previous Max

In addition to that, nvidia has been riding on rising clockspeeds the past few years, the current Pascal architecture isn't much different than the previous Maxwell but clocks much higher, upto 2.1Ghz overclocked. Maxwell also clocked pretty high, going to 1.5Ghz overclocked. CPUs are stuck at clocking 4Ghz and beyond, so graphics cards still have some headroom to grow into.