I have a system running CentOS 5.4. I needed to upgrade the memory but alas, it only has the 2 slots which are already full. I picked up a motherboard cheap that works with my ancient Quad Core AMD processor but instead of nVidia chipset it is an AMD chipset. That means the entirety of disk drivers, video drivers, etc will be different. I would like to hear of anyone has done this without starting fresh and what the gotchas are besides the obvious back everything up.