P5Q Pro Voltage Question

[anthonee1230]

So got a P5Q Pro here, noticed that with LLC on, my voltage in CPU-Z actually goes UP when I put a load on it with ORTHOS.

The CPU is an E7200 and I have my voltage set to 1.400 in the BIOS, and the idle voltage in CPU-Z is 1.375. But as soon as I put a load on it, the voltage goes UP to around 1.384v.

This seems somewhat counterintuitive to me considering vDROOP is supposed to DROP voltage?

Can someone explain what's happening.

Just for information purposes I do have Loadline Calibration enabled. CPU doesn't seem to be stable though without LLC enabled.

FSB: 400
Multi: 9.5

RAM is 4GHz of OCZ Platinum XTC Rev. 2 (4x1GB sticks) at 1.9v in the BIOS.

While I know CPU-Z voltage readings aren't 100% accurate, surely the voltage shouldn't go UP?

With my old board (P35-S3G) the voltage had always gone down when I applied a load.

 

[ElBurro]

You might want to read this

 

[TC91]

My p5q does the same thing, if say i set 1.20v with LLC enabled in bios, i get about 1.18v idle and 1.20v load (according to cpu-z). If LLC is off, then vdroop occurs (its freaking huge on my board, 1.29v idle down to 1.20v loaded)

 

[anthonee1230]

So should I have it on or off? I need over 1.42v in the BIOS (about 1.39 idle in CPU-Z) to be stable at 3.8GHz with LLC off, whereas with LLC on I would only need 1.40v CPU-Z (1.37 idle, 1.38 load)

 

[ElBurro]

keep it on. If you want to know why read the article.

 

[n7]

Normal.

HWC reviewed the P5Q Pro here:http://www.hardwarecanucks.com...otherboard-review.html

There do not appear to be any major spikes in voltage supply when running with it enabled, so i personally prefer to leave it enabled.

If you want vdroop (voltage supply will drop under load), then disable LLC.

 

[anthonee1230]

So vBoost is good, okay. Thanks, have never used a board with something like LLC before.