Came here to say this. Imagine a cluster of this.[url=http://arstechnica.com/civis/viewtopic.php?p=24454371#p24454371:20vp183c said:tutis[/url]":20vp183c]Could this kind of little box be used to brute-force password cracking attempt? Isn't it doing the same kind of math?
It is exactly why the move from FPGA to ASIC has occurred, it is simply far more cost effective to use specialized hardware to maximize profit potential by reducing the electrical bill.[url=http://arstechnica.com/civis/viewtopic.php?p=24454377#p24454377:1pykone8 said:zneak[/url]":1pykone8]I'll be curious to see how much bitcoins have to be worth to make up for the electricity consumption.
If not this box, then something broadly similar in concept. Most passwords aren't hashed with SHA-256, so it wouldn't be directly useful, but equivalent boxes doing SHA-1 or MD5 sure would be.[url=http://arstechnica.com/civis/viewtopic.php?p=24454371#p24454371:1vj421fk said:tutis[/url]":1vj421fk]Could this kind of little box be used to brute-force password cracking attempt? Isn't it doing the same kind of math?
According to my trusty Kill-A-Watt, the miner is drawing a pretty constant 50 watts ... According to MacMiner, the ASIC is generating a fair amount of heat, too...
Since this unit only uses 50 watts to hash at 5Ghs/sec, it is far more efficient than the GPU miners that have been working at this for years using 300-600 watts to hash at 800Mhs/sec. Mining wouldn't be profitable if bitcoins were only worth $3-$5 with high electricity costs, but with bitcoins now being traded at over $100, the BFL devices are quite efficient little moneymakers.[url=http://arstechnica.com/civis/viewtopic.php?p=24454377#p24454377:33oezm2e said:zneak[/url]":33oezm2e]I'll be curious to see how much bitcoins have to be worth to make up for the electricity consumption.
If you're mining in the winter, at least you can make use of the heat and it's not totally wasted.[url=http://arstechnica.com/civis/viewtopic.php?p=24454377#p24454377:26j9f78y said:zneak[/url]":26j9f78y]I'll be curious to see how much bitcoins have to be worth to make up for the electricity consumption.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454413#p24454413:25rbipe6 said:DerHabbo[/url]":25rbipe6]Ok, so perhaps we (myself and my fellow BFL detractors) were wrong about BFL. It's nowhere near as powerful as the Avalon ASICs, but hey, they hit their spec, so they lived up to their part of the deal. I think. Shipping these review units is a good first step, shipping the whole first run will be the true test.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454505#p24454505:2s7l53og said:secretmanofagent[/url]":2s7l53og]Question on bitcoin: What is it actually calculating? I always wondered if it could be some foreign power's way of getting a supercomputer while making it look legit.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454451#p24454451:176dz220 said:DrPizza[/url]":176dz220]If not this box, then something broadly similar in concept. Most passwords aren't hashed with SHA-256, so it wouldn't be directly useful, but equivalent boxes doing SHA-1 or MD5 sure would be.[url=http://arstechnica.com/civis/viewtopic.php?p=24454371#p24454371:176dz220 said:tutis[/url]":176dz220]Could this kind of little box be used to brute-force password cracking attempt? Isn't it doing the same kind of math?
[url=http://arstechnica.com/civis/viewtopic.php?p=24454451#p24454451:mnxiylnu said:DrPizza[/url]":mnxiylnu]If not this box, then something broadly similar in concept. Most passwords aren't hashed with SHA-256, so it wouldn't be directly useful, but equivalent boxes doing SHA-1 or MD5 sure would be.[url=http://arstechnica.com/civis/viewtopic.php?p=24454371#p24454371:mnxiylnu said:tutis[/url]":mnxiylnu]Could this kind of little box be used to brute-force password cracking attempt? Isn't it doing the same kind of math?
[url=http://arstechnica.com/civis/viewtopic.php?p=24454433#p24454433:17y0idzg said:nosensewhatsoever[/url]":17y0idzg]I'm pleading ignorance here. What exactly does bitcoin mining do that creates the bitcoin currency? I know I can google a lot of it, but if anyone can break it down for me real quick I'd greatly appreciate it.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454429#p24454429:1z372jji said:Dilbert[/url]":1z372jji]Witty and insightful and yet downvoted. Downvoted by people who don't understand the post, yet again on Ars, so they downvote. If you don't know, skip it over, or look it up and learn. Those are your two choices.[url=http://arstechnica.com/civis/viewtopic.php?p=24454401#p24454401:1z372jji said:caw[/url]":1z372jji]Is the outlet voltage in your house so bad that it was necessary to report that power AND current are constant? My condolences to all your appliances
[url=http://arstechnica.com/civis/viewtopic.php?p=24454401#p24454401:o5wv2ouv said:caw[/url]"5wv2ouv]Is the outlet voltage in your house so bad that it was necessary to report that power AND current are constant? My condolences to all your appliances
[url=http://arstechnica.com/civis/viewtopic.php?p=24454553#p24454553:zn31gruj said:caustictoast[/url]":zn31gruj][url=http://arstechnica.com/civis/viewtopic.php?p=24454451#p24454451:zn31gruj said:DrPizza[/url]":zn31gruj]If not this box, then something broadly similar in concept. Most passwords aren't hashed with SHA-256, so it wouldn't be directly useful, but equivalent boxes doing SHA-1 or MD5 sure would be.[url=http://arstechnica.com/civis/viewtopic.php?p=24454371#p24454371:zn31gruj said:tutis[/url]":zn31gruj]Could this kind of little box be used to brute-force password cracking attempt? Isn't it doing the same kind of math?
The problem is these chips were designed with SHA256 in mind. It's using an Asic so there's no way to change. This thing can mine bitcoin (or other SHA256 coins) and that's it. it'd cost millions of dollars to develop a chip to do password cracking just like the millions that went into this chip.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454615#p24454615:28hsm1ga said:MancombSeepgood[/url]":28hsm1ga]Where does the fan even go on that thing? I don't see nearly enough holes to create airflow through the heatsink.
My guess would be in the ballpark of 50W of heat... you know... physics and all that.[url=http://arstechnica.com/civis/viewtopic.php?p=24454467#p24454467:117z1x4v said:chalex[/url]":117z1x4v]According to my trusty Kill-A-Watt, the miner is drawing a pretty constant 50 watts ... According to MacMiner, the ASIC is generating a fair amount of heat, too...
I wonder how much heat it's generating
http://www.bitcoinx.com/profit/ is a good calculator of profitability, put in 5000 MH/s and 50W.
$2130 in 3 months including cost of box? If the box is $275.[url=http://arstechnica.com/civis/viewtopic.php?p=24454467#p24454467:1kk35595 said:chalex[/url]":1kk35595]
http://www.bitcoinx.com/profit/ is a good calculator of profitability, put in 5000 MH/s and 50W.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454377#p24454377:1z6bth9u said:zneak[/url]":1z6bth9u]I'll be curious to see how much bitcoins have to be worth to make up for the electricity consumption.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454413#p24454413:1iu958m2 said:DerHabbo[/url]":1iu958m2]Ok, so perhaps we (myself and my fellow BFL detractors) were wrong about BFL. It's nowhere near as powerful as the Avalon ASICs, but hey, they hit their spec, so they lived up to their part of the deal. I think. Shipping these review units is a good first step, shipping the whole first run will be the true test.
[url=http://arstechnica.com/civis/viewtopic.php?p=24454479#p24454479:378mdib9 said:stopher2475[/url]":378mdib9]If you're mining in the winter, at least you can make use of the heat and it's not totally wasted.[url=http://arstechnica.com/civis/viewtopic.php?p=24454377#p24454377:378mdib9 said:zneak[/url]":378mdib9]I'll be curious to see how much bitcoins have to be worth to make up for the electricity consumption.
If the 5GH model is 50W, I'd be willing to bet the power is more like 500W for the 50GH. But it still comes out pretty darn good, the power just isn't that big a component.[url=http://arstechnica.com/civis/viewtopic.php?p=24454895#p24454895:2w53zups said:whisk3rs[/url]":2w53zups]So if you manage to get your paws on the 50GH/s miner, even at 100W consumption, and 80$/BC, you're bound to make $16K in 3 months? What am I missing here?
[url=http://arstechnica.com/civis/viewtopic.php?p=24454895#p24454895:3dho5aav said:whisk3rs[/url]":3dho5aav]So if you manage to get your paws on the 50GH/s miner, even at 100W consumption, and 80$/BC, you're bound to make $16K in 3 months? What am I missing here?
http://dev.bitcoinx.com/profit/
[url=http://arstechnica.com/civis/viewtopic.php?p=24454921#p24454921:dke1ll05 said:Doubletwist[/url]":dke1ll05][url=http://arstechnica.com/civis/viewtopic.php?p=24454895#p24454895:dke1ll05 said:whisk3rs[/url]":dke1ll05]So if you manage to get your paws on the 50GH/s miner, even at 100W consumption, and 80$/BC, you're bound to make $16K in 3 months? What am I missing here?
http://dev.bitcoinx.com/profit/
The main thing you're missing is that as more ASIC miners come online, the difficulty will increase quickly, thus lowering your profit. Also if 5Ghashes use 50W, then perhaps the 50Ghash version will use 500W, not 100W.
They should still be profitable for awhile, depending on how many Avalon ASICs come online.
This is their least powerful unit (formerly called "Jalapeno"). See their products page.[url=http://arstechnica.com/civis/viewtopic.php?p=24454413#p24454413:kuri2687 said:DerHabbo[/url]":kuri2687]It's nowhere near as powerful as the Avalon ASICs
The info is pretty scattered, so this is mostly from memory. I welcome any correction.DerHabbo":kuri2687 said:but hey, they hit their spec, so they lived up to their part of the deal. I think. Shipping these review units is a good first step, shipping the whole first run will be the true test.
Butterfly Labs":kuri2687 said:The key issue has been the engineering related to accommodating larger power draws than expected. A good example is the Jalapeno product. It was originally designed to be powered by USB but now consumes the power of a small light bulb (30w).
Consequently the power regulator, enclosure, airflow and PCB needed upgrading to suit. Although we are *very* aware of the undesirable dynamics of any delay, we were nonetheless obligated to make these updates in order to deliver a reliable product at the expected performance. The same adjustments have been made with all products in the lineup. You can see the adjusted product cases in our currently posted product lineup. (The Mini Rig case will be double shipped to satisfy their orders which is why we've run out Mini Rig enclosure stock).