underclocking using cpufreq and powersaved

[Guest hari_seldon99]

Hi,

 

I just did a major upgrade to by box and got me an Intel Core2duo Conroe E6300 and an Intel D946GZIS Desktop Motherboard. I installed Mandriva 2008.0 x86-64 bit version. However, I notice that my cores are running too hot (idles at 60 deg C). I did a lot of hardware tweaking (ditched the intel stock heatsink and got a fancier one from Arctic PLUS their heatspreader) but the temp is still high. I've been trying to cool down the cores by underclocking them. To that end, I installed the powersave daemon and cpufreq utilities. I have it running in "powersave mode". However, cpufreq-info shows the following output:

 

cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
 driver: acpi-cpufreq
 CPUs which need to switch frequency at the same time: 0
 hardware limits: 1.60 GHz - 1.86 GHz
 available frequency steps: 1.86 GHz, 1.60 GHz
 available cpufreq governors: ondemand, conservative, powersave, userspace, performance
 current policy: frequency should be within 1.60 GHz and 1.86 GHz.
			  The governor "powersave" may decide which speed to use
			  within this range.
 current CPU frequency is 1.60 GHz (asserted by call to hardware).
analyzing CPU 1:
 driver: acpi-cpufreq
 CPUs which need to switch frequency at the same time: 1
 hardware limits: 1.60 GHz - 1.86 GHz
 available frequency steps: 1.86 GHz, 1.60 GHz
 available cpufreq governors: ondemand, conservative, powersave, userspace, performance
 current policy: frequency should be within 1.60 GHz and 1.86 GHz.
			  The governor "powersave" may decide which speed to use
			  within this range.
 current CPU frequency is 1.60 GHz (asserted by call to hardware).

 

 

The "hardware limits" seem to be between 1.6 GHz and 1.86 GHz. Is there anyway to lower these limits? Running it at 1.6 GHz doesn;t help cool the cores much...

 

I'm using lm_sensors to measure temperature. While that may not be reliable, the temperature reading while in BIOS is of the same order (57-60 deg C)

 

Any advice on how to proceed is greatly appreciated. Thanks for your attention.