currently im running at 1600 as stated by my processor (i7 4790k) im wondering if i can run it up to 1866 as that is the ram that i bought. the mobo i have is the ASUS Maximus Hero VII i know it can support 1866. but im just wondering how i can do so with out messing up my computer. currently in the bios is set up for 1600, do i set it to auto or 1866? then what? step by step please.