Setting Turbo Ratio by 'Per Core' does Not Work on X79 Asus Rampage 4 Formula

[idata]

Hi,

I have overclocked my X79 R4F with an i7-3930k to 4.6GHz using a 46 multiplier for all cores.

All is well, but I now want to experiment with setting the multipliers on the cores independently. I've set the Turbo Ratio setting to 'By Per Core' and set the core multipliers as follows:

Core 1: 46

Core 2: 46

Core 3: 47

Core 4: 47

Core 5: 46

Core 6: 46

My issue is that when stress testing using AIDA64, CPUID states that the CPU is only running at 3.6GHz, where I would expect to see at least 4.6GHz based on the above configuration. The core temps are consistent with 3.6GHz. I have tested using x264 as well to see if it's something to do with the stress tester within AIDA64, but I get the same result. Is there something else that needs to be set in order for different core multipliers to be used?

I posted this on the Republic of Gamers forum and have checked for the latest chipset drivers, but no solutions yet.

Thanks

[Adolfo_S_Intel2]

Please keep in mind that Intel® provides the unlocked processors for the customer to experiment with over-clocking, but we do not support it, since we do not recommend over-clocking.

We only suggest over-clocking up to the Turbo Boost speed; in this case the maximum over-clocking that we suggest is up to 3.8 GHz.

Over-clocking the processor above that speed will be up to the customer and under his / her own risk.

[idata]

Thanks for the reply.

I have since down-clocked the CPU by setting the Turbo Ratio setting to 'Per Core' using the following:

Core 1: 33

Core 2: 33

Core 3: 38

Core 4: 38

Core 5: 33

Core 6: 33

The intention was to set all cores apart from 3 and 4 to the stock 32 multiplier, but the motherboard forces 33 for some reason. I have tested again running the CPU at 100%, and a fixed multiplier of 35 is now being used i.e. 3.5GHz. I would be grateful if someone could explain to me why this is.

Thanks

[Adolfo_S_Intel2]

I would suggest installing the latest BIOS version for your motherboard, and if the same issue continues, contact the motherboard manufacturer to see the reason that the BIOS sets a fix value.