DQ45CB Ram Question

Can,I,use,1.8,v,and,1.9,v,ram,(same,size,and,speed),in a DQ45CB MB,together if I set the voltage to Auto?                                                                                                                                                                  Auto settings,are,1.8,,1.9,or,auto),

Then,place,them,in,pairs (same,manufacture,and,voltage,together In,primary,1.8,volt and,the,1.9 volt sticks in the secondary slots).