Black Arrow 28nm 100Ghash Bitcoin ASIC from $0.49/GH/s

[elasticband]

it's like avalon chips(mass produced, rushed to market) the chips themselves just are not that great(clocked tot eh max), but the costs in china are cheap.

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[elasticband]

Edit: looks like the inefficient is due to overclocking. An antminer is 1w/gh at 80gh.

but that would involve more chips to achieve 180GH, costs are kept down by clocking the chips to the max performance.

[jimmothy]

Edit: looks like the inefficient is due to overclocking. An antminer is 1w/gh at 80gh.

but that would involve more chips to achieve 180GH, costs are kept down by clocking the chips to the max performance.

Yea but the fact is they can achieve the same gh/w ratio on 55nm chips. Bitmain can always keep lowering the price but they wont be able to compete with knc 20nm or asicminer 40nm. Unfortunately neither will BA.

But we have a long time before efficiency plays a critical role so it might be better to go with a cheap miner like Blackarrow/Bitmine rather than an efficient one.

[elasticband]

Edit: looks like the inefficient is due to overclocking. An antminer is 1w/gh at 80gh.

but that would involve more chips to achieve 180GH, costs are kept down by clocking the chips to the max performance.

Yea but the fact is they can achieve the same gh/w ratio on 55nm chips. Bitmain can always keep lowering the price but they wont be able to compete with knc 20nm or asicminer 40nm. Unfortunately neither will BA.

But we have a long time before efficiency plays a critical role so it might be better to go with a cheap miner like Blackarrow/Bitmine rather than an efficient one.

True.

I look at it as a Loooong game now and always want to have power efficient miners. I mine at home and am limited on how much power i can pull. At present i am running the following

KnC - 790GH - 820W
KnC - 790GH - 820W
KnC - 510GH - 560W
KnC - 680GH - 750W
total - 2770GH - 2950w + 4 x 80 for fans and controllers
for the same power consumption i could only have about 1300GH worth of antminers

[Teodor]

Bitmain uses 55nm. Process size is not as important as optimization. Bitmain/Bitfury 55nm are both more efficient than knc 28nm. KNC 20nm will be less efficient than Asicminer 40nm.

IS bitfury producing and selling something now? Except those unefficient USBs...?

[primer10]

i read somewhere that because Russia bans bitcoin, metabank cannot produce bitfury? Is it true?

[bobsag3]

i read somewhere that because Russia bans bitcoin, metabank cannot produce bitfury? Is it true?

And that has to do with Black Arrow... how?

[necro_nemesis]

ASICminer has 40nm coming,but we have no idea of hashrate & cost per miner....as of yet.I'm watching though    

They look to be about .65-.80 watts per GH,MAYBE.so if they come up with a 250GH miner using 200 watts,it'll be a great thing!!! Watch for em!!!!!!!!!!!!  

Asicminer chips will be 0.2-0.35w/gh and $1-0.5/gh

About twice the efficiency and half the price of anyone else.

Win win.  

[Zman8881]

If I bought a Black Arrow Prospero X-3, assuming the difficulty is 10Billion in May, how long could I remain profitable if it ran 24/7? (Energy Cost: .09USD/kWh)
Skyhome|

[AchrafB]

Hey, i have contacted alll the support and waiting to resolve my ticket from 3 weeks :/
it concern my 2nd order,  your support on skype has helped me the first time and processed my order, and i have passed another order for and with the same details
 
and today i noticed that the ticket was closed without any reposne, and it really scares me because I do not know if you received the money the 2nd time
 
can anyone please help me to resovle this trouble and i hope it's just a misunderstanding 

[ernie-]

If I bought a Black Arrow Prospero X-3, assuming the difficulty is 10Billion in May, how long could I remain profitable if it ran 24/7? (Energy Cost: .09USD/kWh)

ROI is relative to the currency you used to pay for the miner. It will take a lot longer to get A positive ROI if you paid in BTC compared to USD as the BTC/USD it generally expected to rise. coinwarz.com has useful calculators, I tend to work on $USD/day figures.

[jimmothy]

i read somewhere that because Russia bans bitcoin, metabank cannot produce bitfury? Is it true?

And that has to do with Black Arrow... how?

It means our miners will survive a bit longer if true. Lets be honest, BA cannot compete with the efficiency of a nextgen bitfury considering it barely competes with a current gen bitfury (0.7w vs 0.8w/gh)

[necro_nemesis]

I'm still baffled on how AM predictions for power consumption are so low using 40nm process node. PFM. 

[nexus99]

I'm still baffled on how AM predictions for power consumption are so low using 40nm process node. PFM. 

Proof will be in the pudding. Till then its just wishful thinking.

[necro_nemesis]

I'm still baffled on how AM predictions for power consumption are so low using 40nm process node. PFM. 

Proof will be in the pudding. Till then its just wishful thinking.

Can performance improvements be had in a revised hashing algorithm?

[jimmothy]

I'm still baffled on how AM predictions for power consumption are so low using 40nm process node. PFM. 

Proof will be in the pudding. Till then its just wishful thinking.

Can performance improvements be had in a revised hashing algorithm?

Must be possible if a 55nm chip can be as efficient as a 28nm chip. I doubt it is as simple as one algorithm fits all. I know diddly squat about designing asics so I could be wrong.

But yeah AM gen3 specs are unbelievable and if FC can pull it off this might be an interesting year for them.

[necro_nemesis]

But yeah AM gen3 specs are unbelievable and if FC can pull it off this might be an interesting year for them.

Indeed. FC certainly appears to be resourceful and have the resources to make this happen.

[Teodor]

FC
What this means? Football Club? 

[Seven111]

Does anyone know if these miners can only be used for Bitcoins or can they be used for any SHA-256 coin?

[necro_nemesis]

Does anyone know if these miners can only be used for Bitcoins or can they be used for any SHA-256 coin?

Alts sha256 can be mined. No scrypt.