Load Line Calibration?

JonJ678 said:
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.
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thanks for this advice

i've turned it off for now

why is it when i set my bios vcore to 1.34v, but in CPUZ it shows 1.24v?
 
Different calibration. That's vdrop, not vdroop. Consensus is to trust cpuz more than the bios on this one, though you can take am multimeter to the board instead to make sure.

Thanks Lynndinky, I didn't realise everest had a high enough resolution to pick it up.
 
adamscybot said:
Got an i7 920 clocked to 3ghz (pussy overclock until I get round to it, lol). Do you reckon it could run at default? What is the default anyway?
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could probably run at stock voltages until about 3.8Ghz perhaps higher (if you have a DO that is)
 
Just because it seemed a good idea or did you put any thought or research into it? I think an awful lot of people are running it just because they like the idea of voltages remaining constant.

Would you rather have 1.5V on idle, 1.4V load or 2V spikes every time it changes between load and idle? The llc must be hard on the power regulation circuitry as well as on the processor, and the gain seems too little to be worthwhile.
 
I've turned it off on mine because it was uplifting the load vcore by about 110mV. Turns out that it's just as stable with it off and it runs a lot cooler now under load. about 6c cooler.
 
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