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    Overclock Pi 3 via config.txt

    Recalbox General
    overclock config.txt
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    • Anonpebbles
      Anonpebbles last edited by

      Just been trying to overclock via the config.txt in boot/
      I am having trouble editing the text in it though because it is read only, even after doing mount -o remount,rw /
      using 4.0 beta 6 btw

      Rpi 3 wew

      gkralicek2 1 Reply Last reply Reply Quote 0
      • Substring
        Substring last edited by

        Just do it through Noobs at boot

        Former dev - Please reply with @substring so that i am notified when you answer me
        Ex dev - Merci de me répondre en utilisant @substring pour que je sois notifé

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        • gkralicek2
          gkralicek2 @Anonpebbles last edited by gkralicek2

          @davidwrightini Try :
          mount -o remount,rw /boot

          That should do the trick.
          (FYI / and /boot are different partitions : / is system partition while /boot is (you would have guessed it i'm sure) boot partition. By typing mount -o remount,rw / you only allowed Read/Write mode on the system partition while the boot partition remained in Read Only mode which explains why you couldn't save your modifications in the config.txt file as it's stored in boot partition :=)

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          • Anonpebbles
            Anonpebbles last edited by

            @gkralicek2 Thank you I am just about to try it now.
            Under the overclock section should a just overwrite what is written there with this:
            arm_freq = 1350
            over_voltage = 4
            sdram_freq = 575
            sdram_schmoo = 0x02000020
            over_voltage_sdram_p = 6
            over_voltage_sdram_i = 4
            over_voltage_sdram_c = 4
            core_freq = 500
            v3d_freq = 500
            h264_freq = 333
            gpu_mem = 256
            This was taken from you in another topic.. Thanks!

            Rpi 3 wew

            gkralicek2 1 Reply Last reply Reply Quote 0
            • gkralicek2
              gkralicek2 @Anonpebbles last edited by

              @davidwrightini Yes replace what is in the overclock section with this and it'll work fine !

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              • Anonpebbles
                Anonpebbles last edited by

                After trying this the method for altering the overclock settings works but recalbox hangs on a black screen upon boot. Maybe it's something I've done wrong

                Rpi 3 wew

                gkralicek2 1 Reply Last reply Reply Quote 0
                • acris
                  acris last edited by

                  Hello @davidwrightini
                  post your config.txt.

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                  • gkralicek2
                    gkralicek2 @Anonpebbles last edited by gkralicek2

                    @davidwrightini Might be caused by the fact your pi doesn't cope well with overclock frequency. Try to lower down the arm_freq parameter in your config.txt to 1250 and see if it boots ok. If so, then increase the value to 1300 and check up if it boots.
                    Not all Pi3 behave the same regarding overclock. And adding a small copper heatsink on both your CPU and SDRAM chips might help too (it's strongly advised when pushing frequency over 1300 Mhz and becomes mandatory if you want to reach 1400 Mhz in a stable way)

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