Why are my idel volts higher than my load volts?

Craterloads · 25 Apr 2011 at 13:23

As per per title?

Idle volts: 1.376v (CPU-Z & HWiNFO32)

Load volts: 1.312v

edit:

What would you class as good temps on these sandybridge's.

Am i looking at under 70c load or 80c load?

i can do

4.4GHz @ 1.264v load temps around 68-72c
4.6GHz @ 1.320v load temps around 78-82c
4.8GHz @ 1.392v load temps around 80-85c

This is with fans set on there lowest speeds, i can speed them up to bring temps down 5-6c but prefer a quite system.

jak731 · 25 Apr 2011 at 13:29

Called Vdroop, intel deliberately does it by design. I'm not entirely sure why, presumably to reduce power at full load, but if it's stable at a lower V at full load why not use the same V at idle?

0.06V is fairly bad, it can vary depending on board and chip used, some boards have a setting in the bios to stop it, others can be modified but you're probably stuck with it.

Craterloads · 25 Apr 2011 at 13:31

jak731 said:
Called Vdroop, intel deliberately does it by design. I'm not entirely sure why, presumably to reduce power at full load, but if it's stable at a lower V at full load why not use the same V at idle?

0.06V is fairly bad, it can vary depending on board and chip used, some boards have a setting in the bios to stop it, others can be modified but you're probably stuck with it.

Thats just silly, why reduce power when you need it. Should be the opposite surely?

jak731 · 25 Apr 2011 at 13:38

Hmm after reading a bit it's to protect the core, going from idle to load suddenly can cause a voltage spike, vdroop is to stop it causing damage. I think also the same voltage can be more damaging under load.

What motherboard are you using?

Craterloads · 25 Apr 2011 at 13:41

Asus P8P67-M Pro

jak731 · 25 Apr 2011 at 15:50

I don't know the board personally but like i say you might be able to find a setting in the BIOS to disable vdroop (check the manual). At the same time it is there for a reason, but higher quality boards (with better pwms) should have less voltage spike when going to load so don't need so much vdroop.

You've got a pretty good overclock with safe voltages, so as long as it's stable and the temps are safe i'd be happy.

Craterloads · 25 Apr 2011 at 16:35

What would you class as good temps on these sandybridge's.

Am i looking at under 70c load or 80c load?

i can do

4.4GHz @ 1.264v load temps around 68-72c
4.6GHz @ 1.320v load temps around 78-82c
4.8GHz @ 1.392v load temps around 80-85c

This is with fans set on there lowest speeds, i can speed them up to bring temps down 5-6c but prefer a quite system.

jak731 · 25 Apr 2011 at 19:21

Personally I'd stick at 4.4GHz, 80 is a bit toasty really. You're getting less than 10% more performance for 0.13V increase, using this equation:

your power consumption will be roughly 32% higher.