1.45v sounds a bit too high to me. I don't think I'd push much more than 1.35v myself. What kind of temps are you getting anyway?
I am currently maxing anywhere between 60-70 C on all cores. I have a X61 that i have set to be running louder and faster than normal to keep it cool.
CAM shows normal idle temps to be in the low to mid 20s and when I play anything afterburner doesnt normally show anything more than 65C.