Will it really make a difference? I got this build made from someone from the community and after checking a few things I just changed the Intel Xeon cpu for an i5k. Is it easier to just change the cpu or all the Intel Haswell CPUs recommend 1.575V?
Lower voltages will always be more reliable. The new DDR4 standard will have lower voltages and higher frequencies (win-win). As long as you get the recommended voltages you should be fine. If you get just a little higher, you should be fine too. It's just a recommendation.
Okay, I guess since it is my first try building a rig ill keep the 1.6V, I've read that the ram will perform a little bit lower, but since the difference in voltage is not that big the performance will be negligible. I will keep in mind though your recommendation for future changes in my PC. Thank you!