Limits to Clock Rate
- Current technology < 20 GHz
- Low voltage copper, SOI, sub 0.1 micron
- Double-gate transistors
- Light travels 15 mm in 50 ps -- takes
longer to charge up wires
- Supercooled alternative semiconductors
could reach 100 GHz at high cost
- Light travels only 0.12 inch (3 mm) in
10 picoseconds