prkno i chladic mas dobry takze imo bez problemu pojede na 3.4 GHz a vic ale aspon minimalni +Vcore to chce zvednout... riziko je tu prakticky nulovy.
tvoje deska by mela snad dat bez problemu 420+ FSB bez zvedani NB Voltage ale to Vcore aspon o 0.1 V by to zvednou chtelo.