However, motherboards have settings relating to load line calibration. As load is applied to the CPU, the voltage across the processor decreases (VDroop). Load Line calibration essentially attempts to control this level of droop, by increasing voltage when voltage drops are detected away from a fixed value. Manufacturers have different ideas on how to modify LLC with respect to load, or whether the level of modification should be controlled by the user. Some manufacturers offer the option at a variety of levels, such that overclockers can be sure of the applied setting (even if it increases peak voltage, as explained by AnandTech in 2007).
By doing a full load OCCT test, we are essentially determining both how aggressive the motherboard is reporting the CPU voltage under load and how aggressive load line calibration is performing (from the point of view of the user without an oscilloscope or DVM). If someone has one of the motherboards we have tested and you have a different one, variations in load voltage should describe the offset you may require for overclock comparisons.
ASRock has pulled a fast one on the Fatal1ty Z77 Professional. So far on all the boards I have tested, default settings give load voltage around the 1.050 volt mark on the i7-3770K. With the Fatal1ty Z77 Professional, the load voltage is almost 0.100 volts lower, at 0.956 volts. This opens up a can of worms – is this standard across processors? Will all processors still act fine at stock at this voltage? I know from testing that the processor I have will run at stock at 0.900 volts set in the BIOS, but can ASRock be sure that all processors will do this? It is a very interesting prospect.
this article is about asrock's LOAD LINE CALIBRATION and VDROOP at stock settings, 3.5ghz
the first bolded part talks about the default voltage (VID) of 3770K which is 1.050v, under load the voltage drop (VDROOP) is almost 0.100, thus reducing the voltage under load to 0.956v
the second bolded part is the author talking about him having a 3770K which can run at stock speed of 3.5ghz using only 0.900v, but he doubts that all 3770K processor can run at stock speed with this this low voltage settings,THIS ARTICLE HAS NOTHING TO DO WITH THIS THREADEdited by ghostrider85 - 10/8/12 at 9:18pm