For anyone wondering about anecdotes to the contrary, I slapped random DDR4 DIMMs into my x470 no problem whatsoever. I heard of issues with original Ryzen, but

For anyone wondering about anecdotes to the contrary, I slapped random DDR4 DIMMs into my x470 no problem whatsoever. I heard of issues with original Ryzen, but not 3000, and you’re probably best ignoring the FUD and just going for it. (FWIW: I’ve built 2 Ryzen 2000 and 2 Ryzen 3000 boxes, all on x470 and B450. No RAM issues.)