Check what is your actual stable stock clock vcgencmd measure_clock arm Check temps on stock heatsink or with fan vcgencmd measure_temp If temps are under 50 degrees C then step up a notch sudo nano /boot/config.txt Paste after the first line over_voltage=2 arm_freq=1750 Check temps again
vcgencmd measure_temp or watch -n 2 vcgencmd measure_temp If temps stay under 50 then you can step up to 2.0 Ghz over_voltage=5 arm_freq=2000 Be sure to use a quality power cable and power delivery capable brick and not the shipped one as it will not be able to deliver correct amperes and volrages. Never let your Raspberry Pi 4 run at high temps as it will reduce the life. https://www.amazon.com/Charger-TECKNET-Foldable-Adapter-Compatible/dp/B08YJLMQGD/ref=sr_1_3?dchild=1&keywords=aukey+charger&qid=1622128103&sr=8-3 https://www.amazon.com/Charger-RAVPower-Adapter-Compatible-MacBook/dp/B07PLR7T1M/ref=sr_1_4?dchild=1&keywords=aukey+charger&qid=1622128103&sr=8-4 https://www.amazon.com/Charger-Anker-Adapter-PowerPort-iPhone/dp/B07WRKXQ8W/ref=sr_1_5?dchild=1&keywords=aukey+charger&qid=1622128103&sr=8-5