Fractal Design released the Core 3000, an all black, quite stylish mid-tower chassis. This ATX, Micro-ATX, Mini-ITX ready tower chassis can house a pair of external 5.25-inch drive bays, for ODDs (optical disk drives) or anything else that uses that form factor of course. Then on the inside Fractal Design made sure you can house a lot of internal 3.5-inch HDDs as the bays allow six of them to be installed with the top bay being removable, which will allow you to use long graphics cards.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips