That whole MegaPIGpower bullshit I am hearing is unsettling. How are they even getting that kind of hashpower with Bitfury chips? ugh...
Their not, speculation and wishful thinking from Mega most likely. It seems unlikely in the near future they will even contribute half the hashing power each month that has been speculated.
But we'll soon see I guess :s
they can achieve ~0.6w/GH by underclocking the rev.2 55nm chip. If they repeated the design successfully on 28nm wafers they would be looking at 0.2-0.3W/GH when undervolting or 0.3-0.4w/GH at higher clockrates. The PCB design is absolutely elegant, with the design able to run MANY chips (likely far more than 16) in a series, or even operating chips in parallel at 12V eliminating the heat and cost of voltage regulators in the design.
MBP is absolutely the #1 leader in bitcoin mining, but they have been fairly quiet about it so far. The recent franchising talk goes to show that they are capable of producing more hardware than they can operate themselves, and their washington facility is not just a little backroom for testing - it must account of over 5% of the bitcoin network right now