asus rog voltage discrepancy

[thekitchensink]

Hello everyone!

I finished my computer build in august ish, and it isn't the best build ever done. However, I did get a great deal on a new Intel i7-4790k processor, and it is amazing. I love it. However, I figured that I should take advantage of the "k" component of the chip, and do an overclock. I decided to go to a core voltage of 1.3v, since that is the voltage that I keep seeing everywhere. However, when I set the voltage to be static at 1.3, my ASUS ROG Maximus VI reads the voltage at 1.312-1.328. The really confusing part is when I use AIDA64 to stress test it, it always reads the voltages as 1.3. Which should I trust?

 

[Queek]

@thekitchensink You should trust a digital multimeter and the voltage read points (if your motherboard has them).  

Software voltages aren't very reliable, and are only a ballpark figure.  Just make sure that you set a manual voltage while your validating your overclock, then switch it to an adaptive overclock once you have something stable.  

[thekitchensink]

Thanks @Queek,

I ended up trying to run other software voltage readers at the same time as aida, and turns out that my motherboard software was correct. This could lead to some problems, since I am a new overclocker. I was able to get 4.7ghz at 1.296v, but it fails after about 10 minutes of the stress test. What should I do to combat this? Would raising the voltages help, or should I try to mess with my llc?

Thank you again!

[-rascal-]

Thanks @Queek,

I ended up trying to run other software voltage readers at the same time as aida, and turns out that my motherboard software was correct. This could lead to some problems, since I am a new overclocker. I was able to get 4.7ghz at 1.296v, but it fails after about 10 minutes of the stress test. What should I do to combat this? Would raising the voltages help, or should I try to mess with my llc?

Thank you again!

Play with your Load-Line-Calibration settings. The slight decrease in voltage when the CPU is under stress is probably causing it to go unstable.

[Queek]

Play with your Load-Line-Calibration settings. The slight decrease in voltage when the CPU is under stress is probably causing it to go unstable.

LLC has a less substantial effect on stability than it used to.  Set it to 7 to get a reasonably consistent voltage input and forget about it.  

Try overclocking your uncore (cache) at the same time, a large discrepancy between core and cache multipliers can lead to instability.  You can overclock it in a similar fashion to the core, but you won't be able to go as high.  Try to get it to 4.2 at 1.3V and see if your stability increases.  Also increase your cpu core voltage to get 4.7, 1.3 may not be enough for 47.  This is where overclocking becomes a trial and error sort of thing.