Enhanced SpeedStep is a series of dynamic frequency scaling technologies built
into some Intel microprocessors that allow the clock speed of the processor to be
dynamically changed (to different P-states) by software. This allows the processor
to meet the instantaneous performance needs of the operation being performed,
while minimizing power draw and heat generation. EIST was introduced in
several Prescott 6 series in the first quarter of 2005, namely the Pentium 4 660.
Make sure all the hardware support EIST, ex: CPU, operating system, etc. Enter
BIOS setting and set [Advanced BIOS Features] > [CPU EIST Function] to [Enable
]. Different Power Management setting requires in Windows: Windows XP: set up
Intel Speedstep/EIST. This is to help with the increasing number of 'Why does my
CPU speed keep changing' threads. For those users of Intel CPU's you may
discover that your CPU has a habit of changing the multiplier down to 6x then
Whats the real advantage for EIST at least for Desktops since the Cores quickly
go down to idle and C6? I found out that when i disabled EIST i noticed an
immediately more responsive and snappy desktop experience with the ...
Jul 19, 2009 ... INTEL EIST AND PROCESSOR C-STATES - A SIMPLE BREAKDOWN OF THE
TECHNOLOGIES EIST Intel EIST [Enhanced Intel SpeedStep Technology] is a
power-saving feature. It allows software to control the clock speed ...