Although your chip isn't gonna explode from too much heat I can safely say that is a lot of room for improvement in your temps.my idle temps are
Core 0 55c
Core 1 56c
Still sounds hot?
Are you using a fan or running this passive btw?
My e6400 with a titan vanessa type-l hetsink which is a bit worse than the ninja (according to the reveiws). At 3.2 with 1.33V (real) Vcore load temp is 55/55 and idle with speedstep disengaged idle 31 degrees ish in a warm room.
Those temps seem too high for stock volts.