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2342
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Other / Off-topic / Re: Need help with an FTP to hold documents on red light cameras.
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on: May 29, 2012, 06:10:34 PM
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Actually, 2 of the cop cars around here have four cameras, one on each corner of the car. Their sole purpose is to collect license plate pictures, and run them through a database to see whether the car was marked stolen. There is no reason that red light cameras couldn't do this in addition to the useless function they don't properly perform now. Ok, technically I guess it could perform a real-time check of whether the car is stolen or not or pull up info on the registered owner. But none of that is really actionable as it would be within the context of a real face-to-face traffic stop  Add a machine gun. Pew pew pew! |
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2343
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Bitcoin / Hardware / Re: BitForce SC - full custom ASIC
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on: May 29, 2012, 06:09:18 PM
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I'm also think that ASIC's are very bad idea for bitcoin. ALgo will have to change one day, ASIC's will make that sooner, maybe real soon. And one day all that ASIC's will be worthless. Difficulty very high and no equipment capable to get (in reasonable time) to next difficulty drop. And that will be end of bitcoin. It is really bad idea...
Come on guys. It is simply proof that it is popular enough to attract major investment. There is no reason for it to be "bad" for bitcoin, at all. It just means that instead of constantly buying and upgrading obsolete video-card based rigs, you will instead be trying new and emerging ASIC technologies. Benefit is felt in the wallet, when the electricity bill comes. And over time, they will be so much more accessible to everyone, as technologies improve, companies pay off the NRE and become more competitive, and markets for different size operations emerge. |
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2344
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Other / Off-topic / Re: Need help with an FTP to hold documents on red light cameras.
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on: May 29, 2012, 06:04:47 PM
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Actually, 2 of the cop cars around here have four cameras, one on each corner of the car. Their sole purpose is to collect license plate pictures, and run them through a database to see whether the car was marked stolen. There is no reason that red light cameras couldn't do this in addition to the useless function they don't properly perform now.
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2352
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Other / Off-topic / Re: 896 mh/s firmware release - Butterfly Labs
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on: May 29, 2012, 03:43:19 PM
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Well shoot, it seems that 880 is the max for mine. Odd thing is that it gives errors without throttling, but cgminer doesn't report them. So cgminer makes things look like all is well, but in fact the device is returning bad results, and HW: remains at zero but share submission rate tanks.
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2356
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Bitcoin / Hardware / Re: [ANN] OpenBitASIC : The Open Source Bitcoin ASIC Initiative
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on: May 29, 2012, 02:31:05 PM
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MCMs (multi chip modules) like that are not exactly cheap or easy to make. Its not the per chip price, its the NRE.
There is no point for a bitcoin asic, there is no high speed IO or low latency interchip communication. Power delivery aside, you could put dozens of those asics on the simplest cheapest PCB, why make it much more difficult?
OK, still learning. If it really does cost significantly more, then I suppose it isn't worth it. But what I want to find out is some actual cost estimates - how much more? I was thinking specifically in terms of power density when I was imagining this kind of setup. I guess I always have considered density above cost, just because that's what I do. |
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2358
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Bitcoin / Hardware / Re: [ANN] OpenBitASIC : The Open Source Bitcoin ASIC Initiative
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on: May 29, 2012, 02:08:56 PM
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See above. Its not the package thats your limit, its the yields that would plummet if you design a monster size asic. Ive seen reticle size cmos image sensors that yielded two or three functional chips per wafer because they were so friggin huge. Since hashing power scales linearly with the number of chips, there is no reason to make such uber sized chips. Many smaller chips would perform identical and probably end up being a lot cheaper.
Right, so what I was thinking was that there would be one standard size die, small enough to be really cheap and fit on a small package, and then the large package would contain several independent dies. Like this:   ^ That is the VIA Quad-core chip, with two of their Nano X2 dual core dies on one BGA package. Now if we assumed that the die size was small, like 10 millimeters square or so, you could squeeze several of them on. They would fit because of the limited number of communications and power lines needed. |
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2359
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Bitcoin / Hardware / Re: [ANN] OpenBitASIC : The Open Source Bitcoin ASIC Initiative
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on: May 29, 2012, 02:01:59 PM
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The benefit for people here using a standard socket is that you can use commodity heatsinks or waterblocks which would lower the cost. I'm not sure that would offset the added cost of packaging it in something like a AM2/LGA775/LGA1155 package and buying the socket vs just soldering a BGA right to the board, but something like a Coolermaster Hyper212 would provide a lot more cooling for $20 than anything you'd find to fit a BGA chip.
Well I wish I even knew the much the stuff actually cost. For instance, even if it isn't LGA as such, AMD's Semprons are less than 50 bucks for the whole thing, including the useless processor inside. And you can buy entire motherboards to fit them for another 50 bucks. I realize the both are getting heavy volume discounts on all the parts, but for a $2k mining chip, it seems appropriate. If it isn't going to cost that much, that is why I was suggesting that multiple cores be placed on such a chip - this would allow the cheap chips to be a single-core, plastic package, and the 1% would have the option of buying $2-5k multi-core chips with double, triple, quadruple the hashing power. |
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