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Processor
Intel’s 600 and 800 series processors support EIST. AMD’s Athlon 64 line of processors support
Cool’n’Quiet. Both technologies may become a standard feature for future processors.
Chipset
EIST requires the Intel 915 or later chipset. Current HP business desktop systems with qualifying chipsets
include:
Intel 915:
•
dc5100
•
dc7100
•
dx6100 (not available in North America)
Intel 945:
•
dc7600
•
dx7200 (not available in North America)
Cool’n’Quiet requires the ATI RS480/SB400 (Radeon Xpress) chipset. Current HP business desktop sys-
tems with qualifying chipsets include:
ATI RS480/SB400:
•
dx5150
System BIOS
You can enable or disable the Runtime Power Management (RTPM) option in the BIOS of Intel 915 and
945-based systems. This option is located in F10 Setup in the
Power/OS Power Management
sec-
tion. The default EIST BIOS support setting depends on several factors:
Thermal Monitor 2 (TM2) is an older Intel processor feature that allows CPU throttling to slow down the
processor. EIST will replace TM2. Some older processors support TM2, but do not support EIST, while
even older processors do not support either TM2 or EIST. All processors shipped with HP i915 and i945
systems support both EIST and TM2.
You can enable Runtime Power Management (RTPM) on systems that only support TM2. This setup allows
the BIOS to control processor throttling. EIST uses the operating system to control throttling.
EIST Support
TM2 Support
Default Runtime Power Management (RTPM) Setting
Yes
Yes
RTPM Option Shown in F10 Setup - Enabled
No
Yes
RTPM Option Shown in F10 Setup - Disabled
No
No
RTPM Option Not Shown in F10 Setup