A serial overclocker going by the name of Yosarianilives has managed to overclock an AMD FX-6300 processor to 8 GHz. This is the first time that anyone has ever achieved such a high frequency on AMD's six-core FX-6300 from 2012. Yosarianilives reportedly used a bus speed of 280.92 MHz and a multiplier of 28.5.
https://www.notebookcheck.net/AMD-FX-6300-released-in-2012-breaks-an-overclocking-record-as-it-hits-8-GHz.583280.0.html