I am talking about taking a standard gaming card (not a workstation card) and cutting the features down. I didn't mention an ATI-esque Tesla for mining, I was referring to a comment somone else made about the lack of ATI GPGPU cards.
Do you know what a tesla is? It's based on the fermi architecture just like any other gtx 5xx gaming card. If you want a GPGPU from ATI that's more or less the same idea. You are re-vamping an existing architecture for a much smaller audience, and so you are going to pay out the butt for it, and not necessarily get much improvement.