OK so i was talking with this guy about Overclocking and he says that its impossible to achieve 4.2ghz in XP but then i showed him this link http://www.tomshardware.com/cpu/20031230/5ghz-01.html and then he says toms hardware is shit and says that CPU-Z was ran in Dos in that picture. Can i get some help here. Maybe im wrong but i don't know