I want to speed up the image processing and one idea that comes to my mind is overclocking but I only have 5v supply and 2A limitation on my psu can I overclock my Pi 3 withou overvoltage or overcurrent?
You could easily overclock your Raspberry Pi 3 but please keep in mind that with great power comes great responsibility. 😋
There is an article here from the RetroPie git repo which tells you all about the instructions and information about overclocking.
You can try it out by modifying the overclock settings in config.txt. But please stay within the limits mentioned by the link above: we're not responsible for any damage caused by this. You would probably want to edit the values for GPU and CPU.
sudo nano /boot/config.txt
Please also note that there are some settings which flip a hardware switch inside the Pi and void the warranty, these are:
- over_voltage greater than 6
- temp_limit greater than 85