General discussion • Re: Rpi4b overclock settings

Thanks, but I think I managed a bit ?

Got:
CPU to 2350
GPU to 900

If you keep incrementing the speed by a small amount, it usually wont crash on boot. Instead it will probably freeze at some time later. That means its easy to fix config.txt and try again. I keep going until its unstable and then back off a bit for a safety margin.

If the overclock makes the Pi too hot it will throttle back to 600MHz which makes the overclock pointless! So you must check periodically during and after stress testing - it should always say 0x0.Run a stress test for an hour or more. Then run it again for another hour doing normal work at the same time. Then just use the Pi. If it never crashes after a month say, you can regard it as safe and stable.

stress-ng is the best stress test I know. Run this for at least an hour and monitor the clock speed and temp.You will have to install it first:

Statistics: Posted by jahboater — Fri Jun 20, 2025 9:42 am

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