Turbo Overclock with MSI P67-GD55

Question

Hey,
I'm trying to overclock my 2500K, but I don't want it to run always on the OC Clockrate. Now I read it should be possible to change the Turbo Multiplier so the OC only applies when heavy CPU Power is needed. When I check my BIOS and go to Overclock>CPU Features. There I find: core 0 on 37x,1 on 36x, 35x,34. But the problem is, that I can't change these values. Is this locked at the GD55 Motherboard?
System specs:
Latest BIOS version
Intel Core i5 2500K
MSI P67-GD55
4 GB RAM Kingston HyperX 1600Mhz
Samsung Spinpoint F3
Nvidia GTX275

Answer 1

Please read this article to better understand the turbo boost technology. http://www.legitreviews.com/article/1501/2/
The technology applies max turbo boost to 3,7GHz only on lighter loads, i.e. when one core is being used. As sson as more than one core is under load the turbo boost will reduce until under full load the processor will only run at 3,4GHz. This ensures smooth transitioning between loads and a better performance under loads. There is no reason to disable this.
Furthermore, you will find when your PC idles, the clock frequency will actually go down to 1,6GHz or there abouts to conserve energy and reduce heat generation. Under light loads the Processor may run anywhere in between the minimum and maximum defined Intel clock frequencies.
If you were to increase your CPU multiplier to say 40 and leave everything else alone, then the maximum core clock applied will be 4,0GHz, but the PC will still reduce back to idle when there is no load. Give that a try and observe the behaviour. Download CPU-Z to monitor the voltages and frequencies.