IBM aims for 4GHz circuits
Yeah, that's 4000MHz. This week's International Solid State Circuits Conference (ISSCC) is full of surprises, including word that IBM is working on a technology to allow multiple clocks to be distributed around a chip. Why distribute the clock source? Check it:
"Maintaining a synchronous clock across an entire chip becomes increasingly difficult as performance rises, and the clock itself can limit performance," said Stanley Schuster, one of the researchers working on IPCMOS. "We believe this new design will help us overcome those problems in future generations of high-speed chips."
Here's a tidbit on how the experimental IBM clock scheme works:
The key to IPCMOS is a distributed decentralized clock that uses locally generated clocks to run smaller sections of a circuit. This provides for faster sections of circuits to run at higher cycles without needing to wait for slower operations to catch up.
This setup also cuts power requirements in half. Amazing stuff.