Acer Aspire 5732ZG successful cpu upgrade

Yesterday I've successfully upgraded Acer Aspire 5732ZG T4500 CPU to T9600. Although laptop is working fine I get higher temperatures than on standard CPU. One issue that I discovered is that I cannot set the lowest frequency that is avalible for scaling on T9600 (800MHz). Here is output of cpufreq-utils:

Code:

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 10.0 us.
  hardware limits: 1.60 GHz - 2.80 GHz
  available frequency steps: 2.80 GHz, 2.80 GHz, 2.13 GHz, 1.60 GHz
  available cpufreq governors: userspace, conservative, powersave, ondemand, performance
  current policy: frequency should be within 1.60 GHz and 2.80 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 1.60 GHz.
  cpufreq stats: 2.80 GHz:6,15%, 2.80 GHz:1,62%, 2.13 GHz:1,61%, 1.60 GHz:90,62%  (18016)
analyzing CPU 1:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 1
  maximum transition latency: 10.0 us.
  hardware limits: 1.60 GHz - 2.80 GHz
  available frequency steps: 2.80 GHz, 2.80 GHz, 2.13 GHz, 1.60 GHz
  available cpufreq governors: userspace, conservative, powersave, ondemand, performance
  current policy: frequency should be within 1.60 GHz and 2.80 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 2.80 GHz.
  cpufreq stats: 2.80 GHz:8,00%, 2.80 GHz:2,83%, 2.13 GHz:2,54%, 1.60 GHz:86,63%  (16849)

Can somebody explain why I don't have 800MHz option like other people do?

 

use core temp, you should see it go down to 800mhz when you just idle on desktop. You can't magically set it to run at 800mhz as the cpu uses multipliers for the task in hand so clockspeed goes up and down like mine is 266.01x7 at the moment running at 1862mhz.

 

Except when you run it on power saving mode. That will lock the multiplier to its lowest.

 

My laptop has only 4 P-States: 1,6GHz, 2,13GHz, 2,8GHz, 2,93GHz (IDA). In order to enter 800MHz SLFM mode I have to set SLFM bit in MSR register 0xEE, manually set multiplier to 6x and undervolt CPU to VID 9. When I complete this steps AIDA64 shows FSB frequency 133MHz and CPU frequency 800MHz. Other programs (for ex. CPU-Z) report 1,6GHz. I think that lack of 800MHz SLFM mode is BIOS related. Is it possible to mod BIOS to enable that missing P-State?

 

Hi did you finally get a solution? i have the same laptop, an i want to upgrade my cpu too.
Do we know which is the best working cpu to upgrade to??