"So, about that Guinness World Record-beating clock speed of 8.46 GHz we talked about last week – that's been beaten again.
The very same Andre Yang that achieved that remarkable speed has upped his efforts – and his AMD FX-8150's limits – to an astounding 8.58 GHz.
Yang kept the same Asus Crosshair V Formula motherboard, but this time he cranked the voltage up from 1.992V to 2.076V. This was also done with liquid nitrogen, so it's possible that there's still room for more with the even-more-effective liquid helium."
See article here: http://www.tomshardware.co.uk/fx-8150-bulldozer-record-overclocking-speed,news-36934.html