By executing specialized instructions, software can exercise fine control on the bus-to-core frequency ratio and CPU core voltage.
When the system first boots, the ratio and voltage are set to hardware defaults.
This fine control over the CPU's operating parameters brings LongHaul in contrast to other competing technologies, where a CPU is typically allowed to switch between only two states - one that is fast but power-consuming and one that is slow but uses less power.
However LongHaul is considered similar to Transmeta's LongRun technology.
There are 3 versions of LongHaul: This computer hardware article is a stub.