How to overclock the Samsung Galaxy S3 GT-19300 to 1.8 GHz with the Ninphetamin3 custom kernel

by: Alvin YbañezJuly 27, 2012
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The Samsung Galaxy S3 GT-I9300 is a fast phone with its 1.4 GHz quad-core Exynos processor and 1 GB of RAM. You also get to enjoy its wide and vibrant 4.8-inch HD Super AMOLED display. Imagine playing your high-definition games with this beast. Playing games like Riptide GP and Osmos HD is really smooth on the Samsung Galaxy S3, but the people at XDA don’t seem to be satisfied with its speed.

XDA Developers member netarchy and a group of other developers have introduced the Ninphetamin3 kernel for your Samsung Galaxy S3 GT-I9300. This kernel will overclock your phone’s processor into a faster 1.8 GHz processor, making the phone super fast. It also packs features that improve the phone’s performance such as:

  • CPU Voltage Control Interface
  • Compiler optimizations
  • GPU Voltage and speed control interface
  • Enhanced Deadline Scheduler
  • Removed Debug overhead
  • and many more

If you crave for more speed on your phone, read on to learn how to overclock the Samsung Galaxy S3 GT-19300 to 1.8 GHz with the Ninphetamin3 custom kernel.


  • The instructions in this guide are intended for use with the Samsung Galaxy S3, model number GT-I9300. Applying these instructions on another device or model may produce undesired outcomes.
  • The information in this guide is provided for instructional and educational purposes only. There is no guarantee that these instructions will work under your specific and unique circumstances.
  • Use these instructions at your own risk. We shall not hold any responsibility or liability for whatever happens to you or your device arising from your use of the info in this guide.
  • Read and understand the whole guide first before actually performing the instructions.


  • Samsung Galaxy S3 GT-I9300 running a stock ROM
  • A Windows PC
  • Handset USB drivers installed on the PC. You may install the drivers by installing Samsung Kies.
  • Enable USB debugging on your handset.
  • Disable antivirus, firewall, and other security software. Also disable Samsung Kies and other software that accesses your phone. Such software can interfere with the procedure in this guide.
  • Download these to your computer:
  • Backup all personal data on your phone to make sure you have a copy of your personal data (e.g., contacts, SMS, MMS, Internet settings, Wi-Fi passwords, and the like) in case the procedure in this guide erases such data.


  1. Extract into a folder on your computer.
  2. Switch off your Samsung Galaxy S3.
  3. Reboot your phone into Download Mode. You can do that by pressing and holding down the Volume Down key, Home button (middle key), and Power button simultaneously until a warning message appears on the screen. Press the Volume Up key to continue into Download Mode.
  4. Open the folder where you extracted the Odin files and click Odin3 v3.04.exe. This will launch Odin on your computer.
  5. Connect your phone to the computer via USB cable. The word “Added!!” will appear on Odin. If it doesn’t appear, make sure you have properly installed the USB drivers on your computer.
  6. Click the PDA button in Odin and locate the ninphetamin3-release-1.2.0.tar.md5 file.
    • NOTE: Make sure that “Re-partition” is not checked under Options.
  7. Click Start to flash the kernel to your phone.
  8. Your phone will automatically reboot after the flashing procedure. You will also get a “PASS” message on Odin.
  9. Disconnect your phone from the computer once you see the Samsung logo on the screen.


In case Odin becomes unresponsive or you get a “FAIL” message, do the following steps:

  1. Close Odin and disconnect your phone from the computer.
  2. Remove your phone’s battery and re-insert it.
  3. Make sure that you have disabled the system tools on your computer and you have downloaded the correct file. See to it that you complied with the requirements above.
  4. Repeat the main procedures above from step 3 onwards.

Congratulations! You have successfully flashed the Ninphetamin3 kernel on your Samsung Galaxy S3 GT-I9300. Fasten your seat belt and get ready to enjoy faster speed and improved performance on your mobile phone.

  • vince

    Hi. Just to confirm we do not need to root the s3 in order to overclock to 1.8mhz. Am I right?

    • Alvin Ybañez

      Hi Vince, you can directly flash the kernel via Odin. No need to root your phone.

      • vince

        Hi Alvin, thanks for your information. I have managed to do that. But how can I check whether now my processor can run at 1.8ghz?

        • xiziar89

          Theres an app u can download to check n see how fast your phone is. Its called u can find it in the play store for free

          • Galaxy S3

            correct if i’m wrong. i tested as you advise but as i tested it, is only check how speed your internet connection.

          • sgs319300

            yah! you ryt……

    • nick peh

      Hi vince, do u just checked on the PDA via Odin to flash the kernel only? People commented that Ninphetamin3 custom kernel have bugs ,camera not working properly, u hav the same problem? Advise?

  • PIPE

    and can revert the process if i want??

    • Roman Masteriko

      Hello! How about the camera bug guys? Does that oc adds heat to the cpu or gpu?

  • Galaxy S3

    hello Alvin, I have install This amazing kernel to my phone and 1 major problem is the camera was not function properly. it’s appear black screen and not responding. i need to restore to original kernel and the problem is solve. Please advise me, either i have wrong on my installation process or this kernel actually has this Bug.
    thank you.

    • abel1015

      I second to this. it also happened to my sgs3.

  • my camera cannot function… can someone sent me or tell me wat to do next? i think i haven backup so i cant restore back… PLEASE HELP!!!

  • Galaxy S3… Can u help me??? I really need help!!!

  • Dustin

    Guys before you meddle with ur phone .. pls search the xda forums , reason the comments and then If u find it safe then proceed I am talking about noobs :-)

  • Help.. my phone cant use the camera…. pls help… and i cant restore my phone even i format the phone and sometime it freazze phone too… can anyone send me the back up file or change back to 1.4ghz??? pls.. T.T just bought the phone.. need help.. send me the file or restore the phone

  • Danny

    Can anyone confirm that their camera is working after using this so that I feel more confident to do it please?

    • Danny

      Guys, I found newer version of odin3 (3.07) and ninphetamin3 (1.2.2) and I can confirm these are working very well with no camera problem and no issues at all so far, overclocked to 1.8ghz. However I am not getting a higher score on benchmarks, they are the same. I cant say I have noticed much difference in performance either.

  • danail

    odin 3.07 and ninphetamin3 (1.2.2) is desicion,camera work and s3 is faster.tnx danny,verry mach

  • I just updated my Samsung Galaxy SIII to Android Jelly Bean 4.1. I tried to overclock it by following the instructions above carefully. But it seems that I broke my device. After rebooting, only black screen appeared and blue light is shown from LED notification light. I didn’t root my device. Please help.

    • Sniff8

      How you fix it? I’m in the same situation.

      • Sniff8

        I fixed it, just re flashing with the ROM I had.

        • al82

          how do i when i can’t do anything because of a blank screen?

  • digvijay

    my screen is black when i started it please tell what to do


    Won’t turn on!!!! HELP

  • deltaliam

    Anyone who doesn’t know what the’re doing don’t try this without finding out a bit more about what you are doing.

  • aamir

    can we overclock it when my s3 is running cyanogenmod 10.1??


    I am using cyanogenmod 10.2 on my galaxy S3, so will this Kernel work with it ???
    Here is the link for CYANOGENMOD I am using currently