No problem at all in using faster RAM than what your system/CPU is rated for.
It wonβt have any performance impact either. (negative or positive)
The quoted DRAM module speed is only reflecting the MAX speed it could go, if the CPU was asking for it.
So if your CPU is asking for 3200, it will run at 3200, even if the DRAM module could handle a faster CPU.
There is no gain on overspending on DRAM, just pick a reputable vendor for stability.
(Corsair is a good one)