I understand that speed improvements are gained through single precision, but it is imperative that ARC at least give us the option of turning on double precision rendering. There have been instances where the tessalation of the mesh is showing because of single precision accuracy. Regular lenses are fine...but I am talking about very long lenses combined and very small details. Also, this would match the quality of traditional Mental Ray rendering.
Tesla cards are built to handle double precision problems...much more so than GeForce cards. Give me double precision, and my community will buy more high-end cards