Indeed, posted in the wrong thread. My bad.
Was joking about the no-reboot-CPU-swap thing. Although, I seem to recall a long while ago that some very large multi-CPU system was designed to allow different CPUs to be shut down and swapped.
I did simply swap everything. Unfortunately, I've found some weirdness. Had to re-install my USB3 driver to get my USB3 ports to work. And my PCI sound card doesn't work. When I try to uninstall/reinstall the driver, it says no card is detected. My board only has a single PCI slot, so I can't test to see if it's the slot or card. And I've found some funkiness with SATA ports. My old 74 GB raptor is happy to sit on either the 3 or 6 Gpbs Intel ports, but refuses to be detected on the Marvell ports. I've tried swapping the cable, which had gone through an extreme angle, bu this didn't help. On the other hand, I can now run my board stable at 103x48, as compared to 103x47 or 100x48. And my memory was auto-detected with less fuss than on the old board. No idea if it's related, but the new board came with a newer (the newest) BIOS.