They are rated at 1.50 volts for the XMP profile already, so voltage isn't going to help you much. What are you expecting to "get out of them" ? Going from 1600 to 2400 in gaming for example will get you between 0% (i.e. Metro LL) and 11% more average FPS. Increases are more pronounced in minimum fps especially if you have multiple GFX cards.
You might go to 1.55 or so and try and tighten timings at 1600 or bump up to 1866
They are rated at 1.50 volts for the XMP profile already, so voltage isn't going to help you much. What are you expecting to "get out of them" ? Going from 1600 to 2400 in gaming for example will get you between 0% (i.e. Metro LL) and 11% more average FPS. Increases are more pronounced in minimum fps especially if you have multiple GFX cards.
You might go to 1.55 or so and try and tighten timings at 1600 or bump up to 1866