Why Nvidia isn't releasing the lower GPUs first? like AMD did.
The market for these high end cards is so small compared to other segments.
Nvidia has the most powerful GPU, the 680, it doesn't need to show off... Well, until AMD release their dual GPU in a card (a.k.a 7990) next month.
Also, I read on another site that Nvidia is having hard time to supply the 680s (because of demand), and basically as the 690 is 2x680 bind together, supply will be even worse.