Re: Open Source Bitcoin ASIC miner project that uses 2x BM1387 (Antminer S9)
I'm wondering what number of chips it has; should be just 4-6 chips, probably on the higher side, though, as they need some pretty fine tuning to achieve 500GH/s on Compac F sticks.
I'm also excited to see these changes to cgminer by kano. We will have to look into individual chip tuning as well, once the single-chip device works and we try out the first multi-chip boards.
Im pretty sure the cgminer screenshot in that thread shows its 6 chips. The decent BM1397 (suffix AI and AG, I believe) are like $15 each new. Hopefully cheaper in quantity. I guess well find out soon!I'm also excited to see these changes to cgminer by kano. We will have to look into individual chip tuning as well, once the single-chip device works and we try out the first multi-chip boards.
When connecting multiple Compac F's, they show up as 1 per line.Price-wise; sure, one ASIC is $15, but the Compac F sells for $250 with a single such chip.
Yeah! Hopefully not too much.I assume individual chip tuning means changing the hash frequency separately for each chip and then seeing how it performs. AFAIK cgminer currently only lets you change the frequency of the whole chain.
Exactly. If one chip performs bad, the other ones are usually 'restricted' by the one bad chip. With a small number of chips, it is worth tuning them individually, so it's nice that such a feature is coming to R909.