I would like to know if it is safe to edit the config.txt file on a Retropie image to change the arm_freq=800 to arm_freq=1200 since it will be running on a R-pi 3 model B?

  • 1
    Possible duplicate of Raspberry Pi Model B 3 Overclocking? – Patrick Cook Apr 1 '16 at 17:35
  • The Pi 3 starts at 1200 MHz (1.2 GHz) so there would be no reason to make this change. – Patrick Cook Apr 1 '16 at 17:39
  • The reason I would make the change is because in the config.txt file it says it's set to 700 MHz by default – Kenneth Spear Apr 1 '16 at 17:54
  • Take a look at this question: raspberrypi.stackexchange.com/questions/1219/… Also note that the file says 700 but when used on the RPi Zero, it still runs at 1 Ghz. – Patrick Cook Apr 1 '16 at 17:57
  • The Pi 3 runs at 1.2GHz by default, it cannot be overclocked, but I imagine it could be under-clocked. Although I would not recommend this if you are using RetroPie. – Darth Vader Apr 2 '16 at 11:54

The Raspberry Pi 3 Model B starts at 1.2Ghz regardless of what /boot/config.txt says. Here are the results of my clock speed files on my Pi 3 with config.txt not edited from a fresh card:

sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq

When not under load:

sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq

When playing music with mpg321:

sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq

You do not need to change /boot/config.txt if you want your Pi 3 running at 1.2Ghz, if you want to overclock it, that is a whole different question. Hope this helps.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.