The "mystery case" sounds a lot like my Rosewill CHALLENGER. I find it to be a very nice case, in fact I have two of them. Others recommend cases such as the Antec 100 or one of the CoolerMaster HAF flavors, but for me (I'm only using single cards) the CHALLENGER is a very nice case. I've modded one of mine and mounted two 8w fans to the outside. They won't fit on the inside because they are industrial; they are full metal body and about twice as thick as a normal plastic 120mm fan. I'm not quite sure of the CF/M, but they are loud as hell and keep my card very cool, even when heavily overclocked. This is why I did not go with the cheapest CoolerMaster HAF, because it only have one 120mm side mount.
As far as the Antec 100 recommendation, it was from Diablo-D3, and the more I researched it, the more it makes sense for 3-4 card setups. It can fit two PSUs and has 2 or 3 120mm front intake fans (can't remember off hand.) - It is quite cheap, and I don't just mean in price; the metal looks like an extremely thin gauge and also very sharp. The shipping also kind of kills it, on Newegg it's about $12 to ship it, where-as the CHALLENGER is free and so is the HAF iirc.
Just my two cents; congrats on the builds and I definitely wish you luck in FPGA R&D. I would love to buy an add-in card specifically designed to run Bitcoin that got 30MH/w
As far as the Antec 100 recommendation, it was from Diablo-D3, and the more I researched it, the more it makes sense for 3-4 card setups. It can fit two PSUs and has 2 or 3 120mm front intake fans (can't remember off hand.) - It is quite cheap, and I don't just mean in price; the metal looks like an extremely thin gauge and also very sharp. The shipping also kind of kills it, on Newegg it's about $12 to ship it, where-as the CHALLENGER is free and so is the HAF iirc.
Just my two cents; congrats on the builds and I definitely wish you luck in FPGA R&D. I would love to buy an add-in card specifically designed to run Bitcoin that got 30MH/w