iv tryed 1.6v lol not even stable @ 3.7ghz i think its a wall even set my timming loose in ram i think its just a shit chip. my bios is rlly weird i had another thread about it. its hex decimals for the voltage and muti. so my voltage is "4" and my muti is "20" if i can remember. POS foxconn bios the bios it came with would keep my 3 cores @ 800mhz and my core1 @ 3ghz.