<i>ight out the gate, I was hit with the first hurdle: DDR5 memory training</i><p>I wish this was documented in anything that comes with the motherboards or CPU for this platform. When I built a 7950X based machine a couple of years ago, I ran into the same problem - it seemed as if it wasn't working at all, so I decided to just leave it sat there. Ten minutes later, it worked! But nothing on screen during this process, nothing in the books.. if I were less patient, I'd have been swapping memory and CPUs in and out and potentially returning stuff. At the very least the motherboard could be showing progress or flashing a light or, well, anything.