Strange voltage behavior on IP35 pro

I just recently bought an Abit IP35 pro, Q6600 G0, and a Thermalright 120 Extreme. I fully updated the motherboard with the latest bios.

When I set my CPU voltage in bios, it shows correctly in bios that I set it to 1.375V, but when I open up CPU-Z it shows up as a fluctuating number. One second it can be 1.21V, the next it can go up to 1.32V. When I start prime95, the voltage stays constant at 1.28V to 1.31V.

Is there any reason that my voltage is lower and fluctuating once I get into Vista? I am able to overclock stably with the weird voltage to 3.24 Ghz, but I want to get my 6600 even higher.

2 answers Last reply
More about strange voltage behavior ip35
  1. That's vdroop. Everything board has it. It can interfere with overclocking. The less vdroop, the better. Typically, it can be reduced with a hardware mod that voids the warranty.
  2. the 1.21V reading also suggest that you have C1E/EIST enabled which will drop the CPU corespeed & voltage when full power isn't necessary.
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