Thanks Barntech. The only thing I could find on how they do it is this:
"Tests of a single chip have already given a result of 4 GH/s with 4,5 watt of powerconsumption. Thanks to Burnin’s unique design, an adjustable external clock enables overclocking."
That was taken from
www.asic-hardware.com. They are really charging a ton for the units, probably don't even break even and people are really really complaining about the prices.
It is worth mentioning that Bitfury (here on this forum) said these chips (on June 8th - 1st Gen?) would get 5Ghash/s when first announced. So, perhaps Burnin figured something out creatively?
https://bitcointalk.org/index.php?topic=228677.0 Something must have been there initially for them to mention 5Ghash/s and that number is also what Burnin has mentioned
and is still working on. I haven't heard anything about water cooling or anything out of the ordinary.
One would think that if these chips could be overclocked to the 4-5Ghash/s that the designers would suggest how? And what is it about an external overclocker that an internal can't do?
Anyway, I'm sure you have come across that but thought to throw it out there again. Burnin was working with just the Avalons, then he gets the Bitfury chips and suddenly can overclock them
to 4 stably? Interesting...
Lots of luck in your work,
IAS
ps - Would it be possible to add an external clock unit later on if we figure out how to get these up to 4Ghash/s?
