memory - If a CPU says "supports ddr4 2100" buit my motherboard can overclock my ram, will that even work?

I'm buying an MSI X99A motherboard.

Only two CPUs support it though, the i7 5820 and 5930.

Both of the processors say "Supports ddr4 2100"

I bought ddr4 3000 RAM and the motherboard says

Memory: 8x DDR4-3333(OC)/ 3110(OC)/ 3000(OC)/ 2750(OC)/ 2666(OC)/ 2600(OC)/ 2400(OC)/ 2200(OC)/ 2133 DIMM Slots,Quad-Channel, Non-ECC, Unbuffered,Max Capacity up to 128GB

So i can overclock instead of wasting money on ddr4 3000 ram right?