EIST & sysctl -a

Hi,

As I don't know where place this, I decided to put it here.

I'd like to ask, why is Apple hidding real CPU frequency? (EIST)

Even when I have only terminal running with sysctl -a , it always shows:

hw.busfrequency: 1064000000

hw.busfrequency_min: 1064000000

hw.busfrequency_max: 1064000000

hw.cpufrequency: 2530000000

hw.cpufrequency_min: 2530000000

hw.cpufrequency_max: 2530000000

....

...

machdep.cpu.brand_string: Intel(R) Core(TM)2 Duo CPU T9400 @ 2.53GHz

I don't think that EIST isn't running at all, but is it normal?

What's the reason to hide frequency?

Thanks for reply