Post
Topic
Board Hardware
Re: Black Arrow 28nm 100Ghash Bitcoin ASIC from $1.99/GH/s, miners from $2.97/GH/s
by
Adrians__
on 11/01/2014, 11:44:48 UTC
Has there been any discussion about overclocking the X-3?

From the technical news they said they had to increase the number of cores to reach their efficiency target.
They lowered the frequency from 1.5Ghz to 1Ghz.

I thought this would mean if I don´t care about the efficiency I should run it at 1.5Ghz with a stronger PSU. However Black Arrow software says this would not be possible.

Why not? Does it have to do with cooling?



Quote
This is not as good as our first simulations which were based only on Front End but this is where we need to stop. The time does not allow us to continue our effort towards seeking a lower power consumption.
We had to drop the frequency from 1.5Ghz to 1.0Ghz in order to achieve this efficiency. However we've increased the number of cores so the Minion will hash at the speed promised.
We had met all the timings for 1.5Ghz but the efficiency was 0.8W/Ghash and this is not something we could have accepted.