Well, today's project is not actually fixing something I did have an old Raspberry Pi 2 that needed some speed to help it keep up with the Raspberry Pi 3. So I got it out and began working with it. Warning! Overclocking is not recommended by the raspberry pi foundation and it will void you warranty so proceed at your own risk! First, you will want to go to you local computer shop and get a big heat sink (see picture!).
The important thing is to get the heatsink securely mounted to the processor with thermal grese. This can be hard and is different for each pi depending on the case so just use your imagination( I used a heatsink off a bad led monitor to bridge the space between the processor and the heatsink). With this installed I then opened the terminal and typed: Sudo nano /boot/config.txt after opening this file I went to the CPU clock line, uncommented it and set the clock speed to 1500mhz!. Then I rebooted the pi and it worked fine so I upped the CPU clock. This part of the process is done by trial and error so if it does not work correctly just reboot and hold down the shift key while booting this will give you the noobs setup screen with an option to edit config.txt then just simply change the settings that you last set back and reboot. You can also set core freq, SDRAM voltage and overvolt. this is also trial and error. When I was finished I had the Raspberry pi running at 2100mhz while never getting hotter than 30° C (see picture!)
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