How does LLC work?

[Khader87]

Hi, 

 

I have a question, i know that LLC should provide the CPU with the needed voltage, but when i use lvl 7 the CPU draws 1.41v, changing LLC to lvl 3 voltage draw drops to 1.3v, noting that no performance increases noticed only higher temps. 

 

shouldn't the CPU draw voltage as it need? not what is being provided? 

 

I have i7 9700 @ 4.5ghz - 4.6ghz on z390 board. 

 

LLC: CPU Load Line Calibration

[Streetguru]

11 minutes ago, Khader87 said:

Hi, 

 

I have a question, i know that LLC should provide the CPU with the needed voltage, but when i use lvl 7 the CPU draws 1.41v, changing LLC to lvl 3 voltage draw drops to 1.3v, noting that no performance increases noticed only higher temps. 

 

shouldn't the CPU draw voltage as it need? not what is being provided? 

 

I have i7 9700 @ 4.5ghz - 4.6ghz on z390 board. 

 

LLC: CPU Load Line Calibration

 

[Falkentyne]

2 hours ago, Khader87 said:

Hi, 

 

I have a question, i know that LLC should provide the CPU with the needed voltage, but when i use lvl 7 the CPU draws 1.41v, changing LLC to lvl 3 voltage draw drops to 1.3v, noting that no performance increases noticed only higher temps. 

 

shouldn't the CPU draw voltage as it need? not what is being provided? 

 

I have i7 9700 @ 4.5ghz - 4.6ghz on z390 board. 

 

LLC: CPU Load Line Calibration

Here is a better explanation using on-die readings.

https://elmorlabs.com/index.php/2019-09-05/vrm-load-line-visualized/

https://www.overclock.net/forum/27686004-post2664.html

https://www.overclock.net/forum/6-intel-motherboards/1638955-z370-z390-vrm-discussion-thread-398.html#post27860326