If your motherboard has an XMP BIOS setting it should configure the voltage and timings correctly but sometimes it misses. Best to check the "Memory" tab against the "XMP" profile in the "SPD" tab.
XMP (Extreme Memory Profile?) is basically a non-JEDEC approved SPD table for your RAM that is programmed into the sticks.
By setting XMP you can run the stocks at their RATED speed and timings even if it requires more vDIMM to do so. To get your system to set that automatically you need an XMP profile and a board that is capable of utilizing it.
EDIT: I looked it up. Seems your board
does have an XMP profile.
But I would strongly suggest not to fiddle with any of it. If you aren't doing any hardcore OCing stuff then do not play with those settings.