my current vcore is 1.4v on an Asus A8N32-SLI Deluxe SPP. (pretty much the same mb as you)
my temps are around 44 @ idle only after have my Zalman 9700 on max with 3 fans running on medium spd.
While im gaming, it goes up to about 54-57 but once i start running some stablity test (Orthos / Dual Prime *small Ftts and such it goes up to 62c

Not sure what my ambient temps are but i have my AC on 65F when im home, so i doubt the temps are gonna be dropping anymore then 44 on idle