Voltage Drop (Idle vs. Full load)

Oct 28, 2005
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Ok here's what I got.

I run an Asus P4GD1 with a 3.0ghz northwood. Stock.

I've heard that the Northwood are notorious for dieing when Vcore has been set to above 1.65. Since my setup at stock, I decided to check the vcore and found it hovering around 1.65-1.71. Keep in mind the Bios has set the vcore to auto. The bios reports that it hovers around 1.64 -1.66. Not a big deal. So I figured I should lower the vcore to 1.550 (lowest bios setting) to prevent any electron migration. The system was and has continued to be stable but I noticed something running PI the other day.

My vcore valve will hover around 1.66 (Asus Prob AI, Everest monitor, Speedfan) when idling and as soon as I run PI my voltage drops (all monitors respond the same) to about 1.5 with small spikes. I'm a little confused. Shouldnt' voltage increase (if it did) when running an application not the other way around?

Any help to explain this would be greatly appreciated.
 

Accord99

Platinum Member
Jul 2, 2001
2,259
172
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In the Intel datasheets, they actually specify that voltage should decrease (upwards of 0.1v) as the CPU load increases.