Intel make processors assuming load line calibration is not used. The chips are designed around the idea that the more current they draw, the lower the voltage across them goes. By using LLC you are deliberately violating intels specifications on this note.
At the least research it before using it.
Anand reported on this, worth a read. I can't replicate his results, but I am very sure that he's right. Electronics do ring like that, and the only way to get a sharp transition is for the ringing to be extensive. It drops out of the fourier analysis which I really didn't like and will have to hope someone else explains. If it's taught in undergrad physics there's a good chance it happens, and I am not willing to subject a processor to extensive ringing (voltage oscillating up and down, up to values significantly higher than the 1.4V you've set in the bios) without good cause.
The other point is a simpler one. High volts and low temps are ok, low volts and high temps are ok. High volts with high temps kills chips. What load line calibration allows is lower voltage
while idle, which is when the chip is cold and therefore the time where high voltage doesn't matter very much. This isn't much of a benefit.
