What will happen if I install 1866MHz RAM into a motherboard that only supports 1600MHZ RAM?

Jasonsteyn1

Commendable
Jul 13, 2016
28
0
1,530
I am busy building my first PC and my motherboard is the Asus B85m-Gamer, and it only supports 1600MHz RAM. What will happen if I install memory with a speed of 1866MHz? Thanks