If Nintendo is smart it won't belong to any particular generation. Doing so would only make it easy for Sony to pick them apart.
Base console should be a 2.4-2.5 TFLOP-ish 14nm machine, with a supplemental computing device (as they patented) that doubles GPU power to 4.8 TFLOP.
And they should release newer SCD refreshes every 2-3 years.