Intel Core2Duo/Quad VID rating, validating using CoreTemp?

[GundamF91]

I'm wondering what's the real VID rating on the Duo/Quad chips. Is it the VID value at the lowest multiplier, ie. C1E, or is it at load, ie. max multiplier?

For example, my Q9450 at C1E state or 6x multiplier, shows in CoreTemp as VID 1.1375. The CPU-Z also shows vCore as around 1.136. However, once I increased load, the CPU hits 8x multiplier, and the CPU-Z jumps to 1.160. CoreTemp value does not change however.

So is my chip's VID 1.1375 or 1.160?

Also, to throw a wrench into this. I know the vDroop decreases the CPU-Z read out. Typically there's a vDroop of .04v. So this could mean that my VID at load is really 1.16+0.04=1.20v.

What do you think?

 

[level101]

Your VID is 1.1375, your VID doesn't change. CoreTemp & RealTemp will show your VID. CPU-Z shows the voltage of the CPU depending on load.

 

[Idontcare]

There are 6 VID's programmed into your CPU, each VID corresponds to a specific activity/sleep state.

Coretemp and others report the highest VID, the one appropriate for a fully loaded CPU.

The lower VID's are what the BIOS references to know what to set the Vcore to when EIST and C1E kick in.

CPU-Z reports the voltage your chip is actually seeing, which won't be the same as VID due to voltage drops in the system.

 

[aigomorla]

Vids are NOT the final say in how well your cpu will overclock.

Once again, the Q9650 you see has the highest vid ive ever seen on a yorkfield. 1.250, yet does 470 fsb on non suicidal voltages, fully stable, and loads at 4.050 like nice morning jog @ 1.36Vcore.

So i'll say it once more again incase you missed my first sentence. Dont let vid drive your entire overclocking.