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Economy / Service Announcements / Re: 1.45 BTC/Each - OFFICIAL BITMAIN NORTH AMERICAN DISTRIBUTOR NINJATECH.ORG
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on: February 24, 2014, 01:15:43 AM
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I'm looking to use a non-PC power supply, with regulated high current 12v DC. Does anyone know (from measurements, specs) what the DC Current draw of the Antminer S1 is? (Standard or overclocked?)
Is 12.0v the ideal input voltage, or would it prefer 13.5v DC? (Is there a DC-to-DC converter in the unit, or does it need 12.0v?)
Do all S1 units need a total of six positive leads and six ground leads (for screw terminals)? I want to have the wiring ready for arrival.
Thanks!
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Bitcoin / Bitcoin Discussion / Difficulty: 917. Value: Unchanged.
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on: September 20, 2010, 08:11:54 PM
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It's relentless.. "difficulty" : 917.83093744! That's 6.57 gigahash/second running right now, or about 2,000 modern (3500 khash/sec) desktop PCs.
The puzzling thing is that the dramatic rises in difficulty seems to have absolutely no effect on the dollar conversion rates. This can only mean that the meeting between buyers and sellers is totally independent of any specific machine generation rates.
It seems likely that the people buying coins have no perceived competition in generating their own btc, so the value is immune to difficulty.
I'm just spouting off...
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Bitcoin / Development & Technical Discussion / Re: Generating Bitcoins with your video card (OpenCL/CUDA)
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on: September 20, 2010, 07:48:47 PM
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Thanks theymos! That's exactly what I was wondering. How did you do that? Was it with the 'bitcointools' that gavinandresen mentioned?
I'm also surprised that there's so... few!!
I count a grand total of SIX auto-payments from the CUDA client.. that is, six payments to the mandatory address of 5.00 BTC.
Each block that the CUDA client found should have sent 5 to that specific address, so this would imply that in the entire closed-source life of the CUDA client, on all the machines it ran on, it found six blocks.
What am I missing? Puddinpop?
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Bitcoin / Development & Technical Discussion / Re: Generating Bitcoins with your video card (OpenCL/CUDA)
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on: September 19, 2010, 04:42:08 PM
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I think I was perhaps unclear.
I want to know the total "incoming" bitcoin count for the address 1HZNsUqQxKVLmfPfCAzLwrnVDzx8CxwxnM
That is, not the donations or payoff or whatever, but the auto-transfered coins that the previous CUDA client was sending out. Unlike any other payment system, we (anyone interested) should be able to determine just how many blocks were generated and taxed to that address.
It's just curiosity, but more an exercise in fund tracking. I haven't figured out how.
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Bitcoin / Development & Technical Discussion / Re: Generating Bitcoins with your video card (OpenCL/CUDA)
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on: September 19, 2010, 04:01:27 AM
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So I've been trying to figure out.. just how many coins did 1HZNsUqQxKVLmfPfCAzLwrnVDzx8CxwxnM receive?
It seems like this should be a matter of public record, and objectively verifiable by anyone.
It would be interesting to see how many blocks (before open source) the CUDA client generated. If each block sent 5 BTC to the address above, that should be easy math, right?
I just can't figure out how to get a total tally of coins to a specific address. Is there a tool for that?
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Bitcoin / Development & Technical Discussion / Re: Generating Bitcoins with your video card (OpenCL/CUDA)
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on: September 06, 2010, 05:48:46 PM
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I set up a new wallet for this client. Starting balance is zero, so it can only be a net win regardless of what the code wants to do.
That said, my passively-cooled Zotac GT240 is not up to the task. After five minutes, the generation rate has dropped down to nearly nothing. I suspect the card has throttled itself down as it bakes under the passive heatsink. Hmm.
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Bitcoin / Bitcoin Discussion / Re: Bitcoin Blogger: Is It Better To Buy Or Generate Bitcoins?
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on: September 01, 2010, 01:11:37 AM
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The article is all about the cost of the hardware, neglecting the more significant cost: electricity.
Once you're above baseline power of 11 kWh/day (as any geek is), Southern California utilities get about $0.13/kwh marginal, with taxes, distribution, etc. The 24-core beast built in the article probably draws some serious current. Hard to guess how much, but I'd guess about 500W? Anyone know?
This will add 360kW/h a month to your electric bill, which will easily drive you into the next pricing tier, or maybe two tiers higher. Now your marginal power can be $0.18 kW/hr. Yikes. That bitcoin miner would be about $2/day to run, or $788 a year, which means you've never matched the hardware cost of the system in two or three years.
If you have to actively cool the room with the computer, at least during daytime, double it again.
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Bitcoin / Development & Technical Discussion / Re: Printing bitcoins : could it work?
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on: August 31, 2010, 10:50:21 PM
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as in the 'neighbor kid moans the lawn' scenario
Your neighborhood sounds pretty fun. Is it possible that 'testing' a bitcoin bill for double-spend could be done much faster than confirmation? After all, you just want to know if the coin has been previously spent. SO the cashier takes the bill with the 2D barcode, scans it, and the register confirms that the coin hasn't been previously spent (ie, the balance is real). The confirmations can come later if the merchant wants to extend some trust. Seems this wouldn't take any longer than a Visa authorization. In a nutshell, my goal is to pay for something 1) Anonymously (thank you sir, you have no idea who I am.) 2) Spontaneously (I wasn't planning to spend bills at lunch, but here I am) 3) Off-line (I didn't bring my gadgets) 4) Minimal trust required (Give me physical goods, and you have reasonable confidence my bill is good.) A completely separate discussion would be valid for discussing a quick way to share BTC addresses, IRL. Cut & Paste works fine. "Read your number to me" would not. A standard 2D sticker on the back of a register would be the ticket here. "BTC Accepted @" with a phone client that scans and pays.
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