There should be a health section in the Bios which shows you the CPU temp.
It won't get hot though because its not under load, you need a monitoring program such as Speedfan.
1.45 volts Hmm ? Well, it depends what chip your using.
I had to use 1.6 volts to get my single core 3700 San Diego stable at 2805 Mhz but my X2 4400 only needs 1.55 volts to be stable at 2805.