CPU Voltage Higher Than Set

TheRichboy247

Honorable
Nov 22, 2012
24
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10,510
Hey there,

I have recently built myself a PC with the i7 6700K Skylake processor. I have begun my adventure into overclocking, but have hit a rather confusing roadblock.

I have set my CPU VCore voltage in my BIOS on manual mode, at 1.250 Volts, with a CPU ratio of 44, giving me a 4.4GHz OC. Everything has been left to it's default setting, or auto. However, when I boot into Windows and run CPU-Z and HWMonitor, my voltage when idling is around 0.8 and spikes up to ~1.4 When I run an AIDA64 stress test, the voltage goes up to around 1.45.

I do not want this much voltage as I am afraid that it will deteriorate or kill my CPU. Please let me know how I can keep the voltage at a constant 1.25. I have also lowered the LLC within AISuite 3, but that has only brought the voltage down to 1.420.

My specs are listed below:

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor
CPU Cooler: Corsair H110i GT 113.0 CFM Liquid CPU Cooler
Motherboard: Asus Z170 PRO GAMING ATX LGA1151 Motherboard
Memory: G.Skill Ripjaws 4 series 16GB (2 x 8GB) DDR4-2133 Memory
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive
Video Card: Gigabyte GeForce GTX 980 4GB WINDFORCE Video Card
Case: Corsair 450D ATX Mid Tower Case
Power Supply: EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply

Also a little note is that the stock voltage was set to 1.325, and I was seeing if I could undervolt as I thought that the stock voltage was quite high.

Thanks for your help!
 


I've definitely made sure that it's on manual mode in the BIOS, not on adaptive or offset. I'm not sure if the programs are monitoring the voltage wrong, because AISuite 3 says I'm running at 1.232 while stressing.
 

That's very possible. Your stock voltage is 1.325? That seems a bit high to me, I'm not sure about skylake stock voltages but I believe 1.4 is the max you should be running and it being that close to the limit from the box seems strange.
 


Yeah I was as confused as you when I learned that 1.325 was stock for my CPU. I've seen others that have had a 1.2 stock voltage, but I guess my i7 loves the extra volts. I was trying to see if I could run 1.250, but it didn't even take effect and jumped to 1.4. I think Intel said the max for Skylake was around 1.48V and I've gone to 1.47 while stressing before. People have bumped their voltages to over 1.5, but Intel would leave some room from the actual max voltage.