In almost all cases a DIMMs will work at multiple voltages.
Some actually state that: E.g:
- 1333MHz at 1.35v,
- 1600MHz at 1.5v
- List item
(Sold ofcourse as 1600MHz capable low voltage RAM).
Other might not state that but almost all (99% ?) will work when you feed them sligthly (say up to 10%-15%) more power than specced.
So yes, it will almost certainly work.
That means a 1.35v DIMM (capable of 1.35 and 1.5v) and a 1.5v only DIMM will work fine (both at 1.5v).