Will setting it to 1.64 volts prevent future issues with the processor?
I don't know what that means?!
If you run the RAM at its' Rated Frequency it will be unstable at 1.50v. Use the settings I posted above. Otherwise use Defaults or DDR3-1333 @ 1.50v.
Clearly, the CMX8GX3M2A1600C9 is 1.65v @ DDR3-1600 - period.