Overclocking Pi4 with recalbox 7



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  • Hi all,
    I have just installed recalbox 7 on my RPi4 and tried some overclocking settings such as :
    over_voltage=6
    arm_freq=2140
    gpu_freq=750

    When running Raspberry Pi OS, this settings work fine and I can track the CPU freq using the command line
    watch -n 1 vcgencmd measure_clock arm

    This command cleary shows the CPU freq increasing to 2GHz and above, depending on CPU load. However when running Recalbox 7, the same command shows that the frequency stays stuck at 700 MHz.
    Is there any limitation in Recalbox for overclocking a RPi4 ?



  • @Bylos said in Overclocking Pi4 with recalbox 7:

    shows the CPU freq increasing to 2GHz and above, depending on CPU load. However when running Recalbox 7, the same command shows that the frequency stays stuck at 700 MHz.

    Hi,

    I used "watch -n1 vcgencmd measure_clock arm" a couple of times, and I can tell you it was stuck at 1750 and then 2000 MHz (depending on the value I was specifying in config.txt) when using Recalbox. But I'm using it with the Argon case...



  • @myjosito thx for the feedback, that's interesting.
    Does the argon case involve particular configuration script which would change the rpi4 behaviour ?
    That makes me wondering why it isn't working on my configuration !
    Regarding temperature mine is never above 32°C...



  • @Bylos said in Overclocking Pi4 with recalbox 7:

    Does the argon case involve particular configuration script which would change the rpi4 behaviour ?

    Don't think so...
    But when running Recalbox, at least with a game, I guess your Pi should show 1500MHz, not 700 (idle I suppose)



  • @myjosito indeed, that's what I thought
    I decreased settings to:
    over_voltage=5
    arm_freq=1750
    gpu_freq=600
    And now it is working as expected !

    I will try to increase values step by step, not knowing which one were causing the issue (overvoltage or cpu frequency)
    Thx for showing me that this should have been working !
    Regards,



  • @Bylos No prob. Happy if it works now as expected 🙂



  • Very interesting topic. With the official support of the Pi4 with Recalbox 7, I decided to buy a 4Go Pi4 with the "GeeekPi ice tower" for the cooling.
    Depending how the dreamcast and PSPP are running, I may try to overclock it. I will post my results here if I do so. 😁



  • Hi folks,

    I tested the overclocking on my RPI4B-4Go.
    I used those settings:

    # rpi4 overcloking
    over_voltage=6
    arm_freq=2140
    gpu_freq=750
    

    I added those lines (just before "include recalbox-config.txt") by following this procedure:

    mount -o remount, rw /boot
    vim /boot/config.txt
    

    I'm using this to cool down my RPI4 → Tour de refroidissement pour Raspberry
    The results are great! After 40min of Dreamcast game, the temperature stabilized to 43°C.
    I got a speed gain of about 10FPS. 😁



  • Thanks everyone. This helped me overclocking my pi4. 🙂

    over_voltage=6
    arm_freq=2000
    gpu_freq=700

    Stable at 54° C in m Argon One m.2 Case.
    Dreamcast runs perfectly and even Conker's Bad Fur Day is playable now 🙂

    Yep, that game is my Crisis 😉



  • I've done a typo in my overclocking settings.
    I'm using those settings:

    # rpi4 overclocking
    over_voltage=6
    arm_freq=2000
    gpu_freq=750
    

    @Multimaniac
    I'm glad this helped you. 😊



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