I get a huge vcore drop and I'm pretty sure that's limiting a lot my 2600k overclocking.

I set 1.445V in Bios for 47X 100 Bclk and load line calibration is enabled.

In windows it give 1.42v idle and 1.35v full load

F6a bios

Is it because it's a cheap motherboard and would not have those problem with an UD4 or Asus P8P67 Pro???