BTW AFAIK Moores Law isn't that speeds increase but that transistor densities increase.
On Wed, Jan 28, 2015 at 1:33 AM, Bob Higgins <rj.bob.higg...@gmail.com> wrote: > What James says is true about the radius of connection. However, two > things have been driving that radius smaller - smaller gate size and chip > stacking. We all recognize that making the transistors and the gates > smaller decreases this radius, but what is not widely recognized is chip > stacking technology is becoming more common. The issue with chip stacking > is the heat dissipation. This was addressed by IBM, for example, using > liquid cooled systems and stacking years ago. However, once the IC power > is reduced, chip stacking becomes very practical. It is currently used to > stack memories on top of processors in a lot of consumer devices. > > Going up provides a lot of opportunity for increased performance by adding > complexity without substantially increasing the radius of connection. > There is presently a lot of headroom in this technology for additional > Moore's law advance. >
