I'm just re-posting this math from the BFL ASIC orders page...
30.768 Th confirmed so far...
455 Confirmed orders...
67.62GH per order average...
* 7029 orders =
475.315Th
19x Current ~25Th
No adjustments for unfilled orders
Hi,
I think that:
* 7000 valid orders is a nonsense, maybe 2000
* most of valid orders are 3.5GH jalapenos
I'm sure that BFL hardware will change the mining completely, but expect more than +100TH from 01.01.2013 is simply unrealistic