Topic: BFL update-29 March 2013 (Read 1823 times)

Looking forward, lots of uncertainty:

BFL has 75,000 chips, each doing 8Gh/s, that is 600T, plus 260T ASIC miner and 100T Avalon, 40T GPU&FPGA, network will top 1PH by autumn, 17X difficulty increase

Suppose one single hashes 4.5 BTC per day at current difficulty, by September, it will hash 0.265 BTC per day, back to the performance of a GPU 2 years ago

For winter we might see helveticoin's ?PH 28nm ASIC products

Their estimates for their FPGAs were way off too. So 195W for a Single SC sounds plausible.

Is that for a 60 GH Single SC? That can't be right, that's garbage compared to the 60w originally advertised.

Is that for a 60 GH Single SC? That can't be right, that's garbage compared to the 60w originally advertised.

Worst case is 195w

Oops, I should have been more specific. In the very beginning, the Single SC's were advertised as 40 GH. They then increased it.

I'm guessing it's tied to the unit purchased.
ie: Jalepeno is the 4.5GH
Little SC (30)
Single SC (60)
MiniRig SC (1200)

When they say purchased hash rate, do they mean 40 or 60? If memory serves me correctly they were originally advertised to deliver 40 GH, then upped to 60 GH when competition arose.

None of this surprises me.

I had planned on updating everyone with a video of a board hashing here in KC tonight, but I haven't been able to get that together yet, so I'm probably going to have to push it off until tomorrow. We are targeting a start of shipment next week, but I'm not quite ready to commit to that at the moment, given our past estimates. It's imminent, though. We may miss our power targets, that's been part of the hold up... we think there's a problem with the power consumption and we're trying to figure out where it's having an issue. However, in the interests of time, we are going to be shipping what we have and going back and fixing while we are shipping.

The power is still far less than any other unit, so it's not like it's something crazy or anything, but it's not 1w/GH and we're trying to locate the source of the power drain. the rest of the 6 wafers, we have been holding off on the last 5 layers for the rest of the chips to be sure we don't need to make a tweak in the metal layer due to the power issue. I think we've pretty much settled that the power issue is NOT in the chip. If the cooling becomes an issue, like I said, we'd scale it back and ship multiple units. Worst case is 195w, but the power systems aren't rated to handle that, so we'd back off the hashrate before we'd let it get that high. We will ship the purchased hashrate regardless of what it ends up costing us.