I'll take the Asus strix x370 and ryzen 2700x, but I have Kingston's hx426c15fbk4 / 16 coded ram. When I look at the Asus website, it doesn't appear between the supported ram. Are there any users with this ram?
BTW I just noticed something you need to be careful off.
U have 2700X, which is a 2nd Gen CPU. And X370 motherboards are made for 1st Gen Ryzen CPUs, meaning it requires a specific BIOS update to read 2nd Gen CPUs. Your motherboard won't even post.
I suggest you go for either the X470, which is the same model as the X370 but for 2nd Gen. Or a B450.