V CORE problem

im having problems whit the voltages on my epox board and i dont know what coluld be the problem....anyoane pls help!!
the vcore voltage is oscilating from 1.60-1.66 is that normal??

 

epox 8kra2+ 2x256 ram kingmax barton 3200+ gf 4 ti 4200
one hard
one cd-rw
3 sistem fan
sb live 5.1
350W PowerMax suply

 

I dont' know if this would effect the vcore but it's worth a shot. Have you upgraded your drivers of your mother board and video card to its most recent up-to-date driver the companys provide??