u_gonna_squeal_b4_we_cookya :
Why keep shrinking the transistors?
Benefits of smaller transistors and wires:
- lower gate capacitance and trace resistance/inductance = faster switching and lower power
- less die area to pack a given amount of features = more dies per wafer = cheaper production
- faster switching and shorter wires = faster propagation = ability to cram more logic between D-flops = more work per clock and lower power
- larger transistor budget = more features moved on-chip = cheaper system cost
This is no by means an exhaustive list. Those are merely the more obvious things I can think of.