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Advanced Controls
3 - 24 Intel CPU SpeedStep Controls
3
* The Speed is defined by the Power Scheme set in Windows (see Table 3 - 2 on page 3 - 20 ).
CPU
SpeedStep
Control
Setting
Windows 2000 or Windows XP
with Basic Service Pack 1
Windows XP Service Pack 1
with Enhanced Power
Management Drivers Installed
Power
Source
CPU Speed
Power
Source
CPU Speed
Performance
Mode Always
AC In CPU Max Speed AC In
600MHz ~ Max
Speed
*
Battery (not low) CPU Max Speed Battery (not low)
Up to Max
Speed
*
Low Battery 600MHz Low Battery
Up to 600MHz
*
Battery
Optimized
Always
AC In 600MHz AC In 600MHz
Battery (not low) 600MHz Battery (not low)
Up to 600MHz
*
Low Battery 600MHz Low Battery
Up to 600MHz
*
Automatically
Switch
AC In CPU Max Speed AC In
600MHz ~ Max
Speed
*
Battery (not low) 600MHz Battery (not low)
Up to 600MHz
*
Low Battery 600MHz Low Battery Up to 600MHz
*
CPU SpeedStep
Control Settings
You can adjust the
SpeedStep control set-
tings from the BIOS
(see
“CPU Speed-
Step Controls (Power
Menu)” on page 5 -
17
). The default BIOS
setting is Automati-
cally Switch . However
even if the CPU set-
tings are at
*
Max
Speed/600MHz, the
CPU speed will still be
affected by the
Win-
dows Power Scheme
setting (this may also
adjust the CPU
speed).
Table 3 - 3
CPU SpeedStep
Control Settings