^^

It would do that, the system manages the CPU cycles, for optimization. When full load is applied, automatically the CPU will move to maximum potential.

Originally Posted by sg3707

There are also frequent crashes.

You need to be specific if you want help. When do you get it? During POST or running through some applications? What type of applications? Which OS? Which psu?



As far "fluctuation" goes, the system will use the processing power that the application requires, a power saving option, something like EIST. If you want to disable it, disable Speedstep (EIST), Turbo Mode, C1E and C-STATES on your BIOS.

Originally Posted by The Sorcerer

You need to be specific if you want help. When do you get it? During POST or running through some applications? What type of applications? Which OS? Which psu?



As far "fluctuation" goes, the system will use the processing power that the application requires, a power saving option, something like EIST. If you want to disable it, disable Speedstep (EIST), Turbo Mode, C1E and C-STATES on your BIOS.

Pardon me if I was not clear.

Some times it doesnt even go to bios. I havent installed any application yet. It freezes randomly.

OS: Win 7

PSU: Corsair VX450

MObo : MSI P55 GD80

I have disabled all ESIT, Turbo Mode, C1E and C-States but still it is same. The temperature is hovering around 70-99C.



I dont know what is the fault. Mobo or Processor.

^^ That is way too high, ensure the Heatsink is seated correctly, and the fan is working. Maybe the CPU is auto-throttling due to thermal issues.

After a series of reboots the temperature now seems to be fine.



But I am unable to maintain a constant 2.66Ghz using whatever settings in bios.

Originally Posted by sg3707

After a series of reboots the temperature now seems to be fine.



But I am unable to maintain a constant 2.66Ghz using whatever settings in bios.

i don't think you'll get 2.66GHz all the time. it will go 2.66Ghz when its required i.e. at high load. why don't you try some benchmarking software?