My source code http://code.cyring.fr/FTS/Source/C/zfreq.c displays the frequencies of the i7 cores.
I'm using the MSR registers to read the core ratios multiplied by the current external clock from the SMBIOS.
However whatever the system load is, the MSR IA32_PERF_STATUS never returns the values found in the turbo zone given by MSR_TURBO_RATIO_LIMIT.
To be short IA32_PERF_STATUS never goes above MSR_PLATFORM_INFO.MaxNonTurboRatio
Please help me to program correctly those MSR
Fyi, new forum thread
I am sorry to hear you are having problems but let me guide you.
The information of internal configuration and manipulation of the MSR of the processor is not available and the support on that is limited. If you would like to get this information is necessary for you to contact an Intel® Field Application engineer.