Did anyone upgrade their 5GH BFL order to a 7GH and receive it?  Just wondering if anyone knows what the real difference is between the two.

Better ASIC chip?  New Firmware?  Better cooling? etc

I'm sure this has been asked somewhere else but I've searched many times and cannot find this scenario in any results.

I have a 16x pcie slot on my MB and I plugged a 1X -> 16 Riser in the slot however the video card is not being detected.  When I plug the 1x ->16x riser in a 1x slot on my motherboard it's detected and works fine.

Any ideas?

Does anyone know where any of these models can be purchased now?  Newegg had the 5830 for $130 but now those are gone, any place to get these where you won't get absolutely taken on the price?

Right now it appears the market things BTC is worth roughly $20 a piece.  After tomorrow's increase does anyone have any predictions of a price?