Butterfly Labs - Bitforce Single and Mini Rig Box

[P_Shep]

Yeah. I know how PSU works ( if you have 1200 W PSU it does not pull all the 1200 but only how much you need ) but the sign that a bigger PSU is needed means that the power consumption was AGAIN underestimated and will probably end up being close to 3000 W.

* P_Shep *slowly shakes head*

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[kano]

Well ... actually ... the original faulty estimate was 20W per 1GH/s
That, as everyone knows, blew up to 80W for 832Mh/s (if you ignore Inaba's results except the very best one he got)

The web site now says 50.4GH/s @ 2,500w

Doing a simple 50.4/0.832 x 80W gives 4846W so we are talking almost a halving of the power requirements ... and an 18% reduction in price.
That's gonna be interesting.

Unless you bought them at 25k/ea.

Well that's an even better price reduction

[P_Shep]

According to "People Familiar with the Matter" (TM)

The phrase is:
"A source close to the situation"

[Inaba]

Well ... actually ... the original faulty estimate was 20W per 1GH/s
That, as everyone knows, blew up to 80W for 832Mh/s (if you ignore Inaba's results except the very best one he got)

The web site now says 50.4GH/s @ 2,500w

Doing a simple 50.4/0.832 x 80W gives 4846W so we are talking almost a halving of the power requirements ... and an 18% reduction in price.
That's gonna be interesting.

They are not the same cards in the RigBox as are shipping in the singles.

[BFL-Engineer]

Well ... actually ... the original faulty estimate was 20W per 1GH/s
That, as everyone knows, blew up to 80W for 832Mh/s (if you ignore Inaba's results except the very best one he got)

The web site now says 50.4GH/s @ 2,500w

Doing a simple 50.4/0.832 x 80W gives 4846W so we are talking almost a halving of the power requirements ... and an 18% reduction in price.
That's gonna be interesting.

The RigBox power spec was calculated after what we learned from singles. So the increased power has
already been taken into consideration...


Good Luck,

[kakobrekla]

Well ... actually ... the original faulty estimate was 20W per 1GH/s
That, as everyone knows, blew up to 80W for 832Mh/s (if you ignore Inaba's results except the very best one he got)

The web site now says 50.4GH/s @ 2,500w

Doing a simple 50.4/0.832 x 80W gives 4846W so we are talking almost a halving of the power requirements ... and an 18% reduction in price.
That's gonna be interesting.

The RigBox power spec was calculated after what we learned from singles. So the increased power has
already been taken into consideration...


Good Luck,

Implying you don't have a working unit?

[coblee]

balanula, i try to be nice to people on the forums as it is how i want to be treated, but you posts push the limits of my patients. Why are you always trying to find fault and start controversy? Are you unhappy that you didn't buy a single sooner?

He's been that way forever. I just ignore him.

Unless you bought them at 25k/ea.

Now that's a good price! Breakeven in 5 months. That's incredible if they can deliver it... it will breakeven before the mining rewards drop to 25btc.

Ok folks, I have some good news with regards to the power requirements for the RigBox.  According to "People Familiar with the Matter" (TM) - the RigBox will use dual 1500w PSUs, meaning they will be 120v/220v switchable units... also meaning you can plug, (presumably) each PSU into a separate circuit to prevent overloading one circuit with impossible current draw.

That's awesome. Inaba, you should as the people in the know if they've thought about splitting the rigbox into 2 devices then? Sell them for $15,000 each, mining 25.2 Ghash/s for 1250W. That would make more sense, right? Send 2 of these devices to the people that ordered a big rig already. Or would they not be able to achieve those specs then?

[MelMan2002]

If it does, thats sure as hell not the real picture. That thing has to be much bigger.

Ahem, TWSS

[kano]

Well ... actually ... the original faulty estimate was 20W per 1GH/s
That, as everyone knows, blew up to 80W for 832Mh/s (if you ignore Inaba's results except the very best one he got)

The web site now says 50.4GH/s @ 2,500w

Doing a simple 50.4/0.832 x 80W gives 4846W so we are talking almost a halving of the power requirements ... and an 18% reduction in price.
That's gonna be interesting.

The RigBox power spec was calculated after what we learned from singles. So the increased power has
already been taken into consideration...


Good Luck,

Hmm interesting - so I guess that means there must be some relationship between the single and the board used in the rig box

Edit: so looking at this in a different way ... it seems to me that the power/temperature is the driving force with these.
Anyone got any more guesses to make about the chip - taking that into consideration?

[DeathAndTaxes]

Ok folks, I have some good news with regards to the power requirements for the RigBox.  According to "People Familiar with the Matter" (TM) - the RigBox will use dual 1500w PSUs, meaning they will be 120v/220v switchable units... also meaning you can plug, (presumably) each PSU into a separate circuit to prevent overloading one circuit with impossible current draw.

This also means, I presume, that each PSU will be field replaceable by the end user without too much hassle and downtime.

This pleases me a great deal.

Thanks for the details.  Hopefully anyone with the $30K also is aware that two different outlets isn't necessarily two different circuits.

[DeathAndTaxes]

That's awesome. Inaba, you should as the people in the know if they've thought about splitting the rigbox into 2 devices then? Sell them for $15,000 each, mining 25.2 Ghash/s for 1250W. That would make more sense, right? Send 2 of these devices to the people that ordered a big rig already. Or would they not be able to achieve those specs then?

That's a good idea.  Honestly since they need to use 2 PSU and multiple boards it isn't like 2x 25 GH units would be significantly more expensive than a single unit.  With dual PSU I hope they have though about what happens if one trips offline and the other remains powered.  Having a single PSU unit eliminates that risk/complexity.

[fred0]

That's awesome. Inaba, you should as the people in the know if they've thought about splitting the rigbox into 2 devices then? Sell them for $15,000 each, mining 25.2 Ghash/s for 1250W. That would make more sense, right? Send 2 of these devices to the people that ordered a big rig already. Or would they not be able to achieve those specs then?

That's a good idea.  Honestly since they need to use 2 PSU and multiple boards it isn't like 2x 25 GH units would be significantly more expensive than a single unit.  With dual PSU I hope they have though about what happens if one trips offline and the other remains powered.  Having a single PSU unit eliminates that risk/complexity.

It definitely makes it look more attractive to me.

[rjk]

That's awesome. Inaba, you should as the people in the know if they've thought about splitting the rigbox into 2 devices then? Sell them for $15,000 each, mining 25.2 Ghash/s for 1250W. That would make more sense, right? Send 2 of these devices to the people that ordered a big rig already. Or would they not be able to achieve those specs then?

That's a good idea.  Honestly since they need to use 2 PSU and multiple boards it isn't like 2x 25 GH units would be significantly more expensive than a single unit.  With dual PSU I hope they have though about what happens if one trips offline and the other remains powered.  Having a single PSU unit eliminates that risk/complexity.

When we first heard about it on the website so many months ago, I remember specific reference to pluggable modules, up to 32 such per rig. I haven't looked to see that is still specified on the site, but you could possibly buy them with fewer modules for lower power consumption and cost.

[fred0]

On another note, I measured about 83.3W for the Wal-Wart power supplies.  Does anyone have any idea about what the power would drop to if I make a number for ATX to coax power adapters? I've a couple of bronze PS units idle.  I also am using a couple of Gold units which may free up in the future.

Edit: I may wind up doing it in any case to avoid having a bunch of wall-wart psus cluttering up the place.

[P_Shep]

See if you can put a multimeter on the power input to the single and get the actual current draw. That'll be very useful.

[SgtSpike]

See if you can put a multimeter on the power input to the single and get the actual current draw. That'll be very useful.

You need an ampmeter specifically (not usually included on most multimeters), and it only works if you can separate the wires.  Otherwise, the positive/negative power draws cancel each other out, and you'd see 0 amps on the ampmeter.

[fred0]

See if you can put a multimeter on the power input to the single and get the actual current draw. That'll be very useful.

The last time I used a multimeter was like 20 years ago.  I don't even know where it is...it probably has the same batteries!

[jddebug]

I have 3 singles running now. 258 watts including the laptop. Averaging 2426 Mh/s after 10 minutes of mining using cgminer.

I've not really mined before so I don't know if this is common but my hash rate takes a hit when stale shares happen. I get a few rejects either just before or just after the stales and it saying something about a Long Poll detecting a new block or a new block detected before long poll.

Is this due to the way the Bitforce Single does its thing or ?

Can I change settings to reduce the stale shares and rejects?

Thanks

[cablepair]

I have 3 singles running now. 258 watts including the laptop. Averaging 2426 Mh/s after 10 minutes of mining using cgminer.

I've not really mined before so I don't know if this is common but my hash rate takes a hit when stale shares happen. I get a few rejects either just before or just after the stales and it saying something about a Long Poll detecting a new block or a new block detected before long poll.

Is this due to the way the Bitforce Single does its thing or ?

Can I change settings to reduce the stale shares and rejects?

Thanks

what pool you mining on?

[jddebug]

I have 3 singles running now. 258 watts including the laptop. Averaging 2426 Mh/s after 10 minutes of mining using cgminer.

I've not really mined before so I don't know if this is common but my hash rate takes a hit when stale shares happen. I get a few rejects either just before or just after the stales and it saying something about a Long Poll detecting a new block or a new block detected before long poll.

Is this due to the way the Bitforce Single does its thing or ?

Can I change settings to reduce the stale shares and rejects?

Thanks

what pool you mining on?

bitcoin.cz