I'm currently trying to find a range of safe voltages for CPU overclocking.

As a start, I looked at the automatic stock voltages: Without any Turbo-functions, the voltages in this case range from 0.86 - 1.34 V ("V Core") under load. However, when the Turbo-clock is active, the upper limit will increase to 1.4 V, with active Load-Line Calibration rarely up to 1.42 V under load.

Since Turbo-clocks are only active on up to two cores at a time when the load is distributable, I was wondering if the whole CPU will run on 1.4+ V when the Turbo is active or just those two specific cores and the rest of the cores keep running on 1.34 V maximum depending on their load?

  • First of all you need to tell us what CPU you are talking about. There will be no help, if we don't no what you are talking about. Additionally this is not really the correct SE for this question. This is about electronics development.
    – jusaca
    Commented Dec 29, 2019 at 13:25
  • Does the motherboard have one VRM or two?
    – bobflux
    Commented Dec 29, 2019 at 13:43
  • 1
    Modern CPU have a lot of power gates that can turn off voltage for unused parts of a core.
    – Turbo J
    Commented Dec 29, 2019 at 13:44
  • Hello jusaca, the specific CPU in question would be an AMD FX-8350 processor, so not a very old, but I supposed that such functionality wouldn't just be available on specific models and wanted to ask in general. I'm sorry if this is the wrong community, but I've asked overclocking questions here before and I figured that since this was more related to the electronic functioning of the CPU, it was relevant. (I'm not looking for overlocking tips for my CPU, I just was curious about the power delivery to the cores.) Commented Dec 29, 2019 at 13:51
  • Hi peufeu, I suspect one VRM. To be sure, it is a regular single-CPU consumer board, an ASUS M4A89TD (asus.com/Motherboards/M4A89TD_PROUSB3) Commented Dec 29, 2019 at 13:57


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