Bit-Tech has spoken exclusively to Nvidia's Chief Scientist, David Kirk, and he has revealed more details about the architecture and its operation and usage.

The chip was designed from the ground up to use less power. In doing that, we used a lot of tricks that we learned from doing mobile parts. The clock speeds within the chip are dynamic - if you were watching them with an oscilloscope, you'd see the speeds going up and down all the time, as different parts of the chip come under load.

Nvidia's David Kirk on the 7800's multiple clock speeds