How to undervolt Samsung Galaxy Note 2?

How to undervolt Samsung Galaxy Note 2?

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Undervolt Samsung Galaxy Note 2 Quad Core Application Processor is one of the ways to increase Samsung Galaxy Note 2 battery life. Besides 5.5″ HD Super AMOLED screen, Quad Core Application Processor is another big battery resource eater. By undervolt, it helps to reduce Samsung Galaxy Note 2 battery usage and will make Galaxy Note 2 cooler (because less heat is generated) too. Interested? Here is the catch, you need to install custom kernel for Samsung Galaxy Note 2 in order to undervolt. Stock kernel does not support undervolt feature. Why undervolt Samsung Galaxy Note 2? Undervolt surely will improve battery life because it maintains the overall performance speed while lower the battery usage. Unlike underclock which may not be so efficient in performance / walt ratio.


Undervolt Samsung Galaxy Note 2

How to undervolt Samsung Galaxy Note 2?

  1. Install Samsung Note 2 custom kernel that support undervolt.
  2. Install SetCPU.
  3. At Voltages tab, select the desire value for each speed stages.
  4. Note – try to reduce 25 mV each time.
  5. Click Apply then.
  6. Run Stress test ~ Stress CPU to test stability (located at Info tab).
  7. That’s all.

Note – Only check ‘Set on Boot’ when you are confident that the undervolted values won’t hang and stable all the time.

By the way, each Samsung Galaxy Note 2 has its own CPU chipset stability. It is unique. So other people’s SetCPU voltages settings may not work for you. Therefore, try lot of the settings until you get the lowest voltages and stable for daily use.

  • Nitehawk

    What are the custom support SetCPU undervolt feature?

    • http://www.jayceooi.com Jayce

      You can try Perseus Kernel.

  • pod

    How much undervolt should keep or save battery? Is it significant?

    • http://www.jayceooi.com Jayce

      Hi pod, get as low as your hardware can.

  • jas_jas

    hi jayce,

    im having issues with extracting the perseus kernel that i downloaded, i tried 7zip but still extracting an .img file instead of .tar? do u have any other links aside from the ones at XDA for this kernel?

    • http://www.jayceooi.com Jayce

      No need to extract the tar file. Just install it with Odin will do. Or install the zip file with CWM.

  • Gimmy Tran

    Very good posting. I try it. Let me see the result.