Tjmax determination

[djg]

Hi Fiery, we're having a discussion in Overclock.net on processor temperature readings. Aida uses Automatic by default, and we were wondering is this a static preset based on the processor or is it a value supplied by the CPU itself on recent processors like my i7 6900K?

 

Thanks IA for some insight into this!

DJ

[Fiery]

On Nehalem and later Intel processors, the TJMax value is SKU specific, and is encoded into a MSR (Model Specific Register). Hence it can be detected, and no need to use static presets or hard-encoded values. However, it also means that the TJMax value may vary between individual parts, so it's not guaranteed that e.g. your i7-6900K would use the same value as your friend's seemingly similar i7-6900K part.

Regards,

Fiery

[djg]

But I take it this means when read properly (e.g. Auto in Aida64) it's the correct TjMax for your specific chip which is great.

 

Thanks, Fiery!

[Fiery]

But I take it this means when read properly (e.g. Auto in Aida64) it's the correct TjMax for your specific chip which is great.

Yes, correct.

[djg]

Thank you for the great info!