I need some help. The Asus z97 Sabertooth only accept 1866 mhz ram speeds. Nothing higher. I plan on playing games a lot. So would I be better off getting a different motherboard that accepts high speed ram? I was looking at the Asus MAXIMUS VII HERO, It accepts ram speeds from 1333 mhz to 3200 mhz DDR3. Would I need faster ram then 1866 mhz? Is anything over 16 gig of ram waste?