Доброе время суток! Кого-то еще интересует эта тема?

Доброе время суток! Кого-то еще интересует эта тема? Почитал даташит Intel 25068607.pdf на P4-M Mobile:

7.3 Enhanced Intel SpeedStep Technology
The Mobile Intel Pentium 4 Processor-M, when used in conjunction with the requisite Intel SpeedStep technology applet or its equivalent, supports Enhanced Intel SpeedStep technology. Enhanced Intel SpeedStep technology allows the processor to switch between two core frequencies automatically based on CPU demand, without having to reset the processor or change the system bus frequency. The processor has two bus ratios and voltages programmed into it instead of one and the GHI# signal controls which bus ratio and voltage is used. After reset, the processor will start in the lower of its two core frequencies, the “Battery Optimized” mode. An operating mode transition to the high core frequency can be made by setting GHI# low, putting the processor into the Deep Sleep state, regulating to the new VID output, and returning to the Normal state. This puts the processor into the high core frequency, or “Maximum Performance” operating mode. Going through these steps with GHI# set high, transitions the processor back to the low core frequency operating mode. The processor will drive the VID[4:0] pins with the VID of the current operating mode and the system logic is required to regulate the core voltage within specification for the driven VID.

в обозначения выводов:

The GHI# signal controls the selection of the operating mode bus ratio and voltage in the Mobile Intel Pentium 4 Processor-M. On the Mobile Intel Pentium 4 Processor-M featuring Enhanced Intel SpeedStep technology, this signal is latched on entry to Sleep state and is observed during the Deep Sleep state. GHI# determines which of two performance states is selected for operation. This signal is ignored when the processor is not in the Deep Sleep state. This signal should be driven with an Open-drain driver. Refer to the Mobile Intel Pentium 4
Processor-M and Intel 845MP/845MZ Chipset Platform Design Guide for termination and connection guidelines.

Я в английском не очень. Правильно понял: сначала перевести процессор в Deep Sleep, потом поставить сигнал GHI# в Low, потом вывести проц из Deep Sleep. И тогда multiplier станет не 12, а максимальным (в зависимости от модели проца)? Но перевести в Deep Sleep сложно. Видно придется гнать шиной. Кстати, здорово подходит кулер от боксового перскотта P4. Только подложить под защелки нужно прокладки 1,5-2,5 мм толщиной.