I don't think it matters how fast Fermi is... it has to be reasonably cheap to produce (because apparently the ATI chips are if they were initially selling 5850s for $259) and that means Nvidia needs healthy yields... and on top of all of that, they still have power consumption to worry about and the fact that ATI probably is already drawing up plans for a replacement for the 5800/5900 series. The longer this drags out the more it makes me think of Larrabee. Intel promised us a GPU that would be competitive with 2009 era GPUs... well, who cares about that if they release it in 2011? In this industry it's all about hitting a moving target... your target NEVER stands still.