haswell with 1.5 volt ram

I have a Dell Optiplex 3020 MT (Mini-Tower) with processor i5-4570 which is Haswell family. The RAM supplied by Dell with the computer was Samsung M378B5173QH0-CK0 - DDR3 4GB 1600Hz PC3-12800 and it works well. However, note that the memory is DDR3 and NOT DDR3L. Dell has published a...