RAM Speeds on a Core i7-7700k

[dudewithnobrain]

The core i7-7700k specifications mention that the ram speed is 2133/2400 DDR4. If I were to purchase 3200 MHz DDR4 RAM, would this automatically downclock? And if this happens, am I able to overclock the RAM speed to 3200 MHz?

 

[rgd1101]

z270 motherboard support higher speed
ram have xmp profile for the motherboard to use.