I am looking to build a system with a second gen threadripper (2950x) and am looking at memory. I know xmp is only for Intel and people say AMD has a similar feature. But I have heard of memory issues. Since I am building a very high end system that will benefit from DDR4 way above 3200mhz, can anyone tell me which, if any modules above that speed work? I am looking to build a system with 32gb of DDR4-4000.