Hi everyone,
I have an Intel DX79SI and a 3930k CPU on it.
I use the Intel Extrem Tuning Utility and CPU-Z to monitor my voltages. CPU-Z seems only to monitor the Core VID, not the Core Voltage. The Extreme Utility monitors the Voltage.
My Goal ist ~4.1-4.3GHz on all cores and 4.5GHz turbo on 1 core. In the BIOS I have 2 possibilities: Auto-voltages seem to get too high. About 1.3V peak-voltage on 1 core and a 1.4V core VID. For all cores it gets less because of the V-Droop on maximum.
When I set the core voltage manually to 1.25V it stays there all the time. I had 4.1GHzx6 - 4.5GHzx1 stable which is great for 1.25V in my opinion. But on idle the VID in CPU-Z goes down to 0.8V or soomething but the Extreme Tuning Utility shows more or less table 1.25V all the time :/ (again, 1.19V on all cores stressed, because of V-Droop)
What is healthier for my cpu?
I wanted to keep this system for at least 4 years.. so I don't want to kill my cpu by electron-migration.
What makes me wonder is: Other mainboards can set the Voltage-Offfset negative, I can't. To get it stable at 4.3GHzx6-4.5GHzx1 I need to set the voltage offset to 0.04V. Is there any possibility to set the offset negative? Like "-0.04V"?
And do you have any suggestions how to set the cpu in BIOS for this overclock?