Just doing some math...
With 4 @ 832, I was drawing 300W at the wall including the router (12W), so (300-12)/4 = 72W per BFL.
Currently have 2 @ 872, and 2 @ 832, drawing 310W at the wall including the router (the other 2 won't run at 872).
So with 72W per 832 unit, the 872 units must be using ((310-12) - (2*72))/2 = 77W.
Comparing hash rates:
832: 813MH/s @72W = 11.26 MH/s/W
872: 849MH/s @77W = 11.02 MH/s/W
So SLIGHTLY less efficient.
You have a little miscalculation 813 / 72 = 11.29 MH/s/W 849 / 77 = 11.03 MH/s/W Also interesting : 849MH/s - 813MH/s @ 77W - 72W = 36MH/s @ 5W = 7.2 MH/s/W The 7.2 MH/s/W for the extra power is probably still profitable for you, if not, you better go back to 813 MH/s. P.S. I like math  |
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Updated my signature  |
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Gabriellz9
^^^ This douche bag is trying to hustle people on the forum. DO NOT deal with him.
DO NOT take his "I will ship the cards for half price and you pay later!" deal!
I mean, I know you are all smart and probably wouldn't do that anyway. But there are some newbies here that could get hustled.
Im a scammer because I told you I didnt want to proceed with the deal since you wanted the products first? Sigh.. Honest bob: I asked you if you were still selling btc, you said no. How is that trying to scam?? I can even provide PM details.. Psychotic: the ID isnt photoshopped, you live in the same country, just compare them ... The ID is definitely photoshopped (or other way altered) See http://nl.wikipedia.org/wiki/Burgerservicenummer#11-proef (text is dutch) 158267262 -> 9*1+8*5+7*8+6*2+5*6+4*7+3*2+2*6+(-1*2) = 195 -> 191 / 11 = 17,36 My burgerservicenummer gives 231 / 11 = 21 |
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Yohan, what will be the price for the quad for non preorders ? In the opening post : "After we complete the benchmarking/software work the price will increase by 50% to cover our costs in doing this work and general support." So £600/$960/780€ |
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Am I the only one who only sees a picture on the website and have no idea what specs and/or prices the products have?
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GPU mining is already not profitable in UK due to electricity costs.
Same here in the Netherlands if I have my computer on for just mining. But if my computer uses 200W during normal use and 300W during normal use + mining, then mining can be profitable because it's 3 times cheaper. |
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Somewhere in november the block reward will go from 50 BTC to 25 BTC.
Somewhere end of 2016 it will go to 12.5 BTC.
Somewhere end of 2020 it will go to 6.25 BTC.
Etc...
IIRC somewhere in 2200 the reward will go to 0 and the miners only earn bitcoins from the transaction fees.
What will exactly happen to difficulty and price when difficulty halves does nobody know.
My guess some people will stop mining so the difficulty will go down and price up, but it will correct after some time.
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You don't need a protocol change to do that if it's already possible to put your information in it.
Just change the extra information to
your name + previous block hash you've mined + sign(your name + previous block hash)
It should be possible to not insert this information so real anonymous mining stays possible.
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Honestly we need strongly signed blocks. It can be optional but I imagine most pools would sign their blocks. Major farms (GBLSE) would sign blocks to prove their contract's hashing power. I think a majority of p2pool miners and even some solo miners would strongly sign their blocks.
While not everyone would sign blocks it would eliminate the false positives and reduce the amount of unknown to the truly unknown.
Strongly signed blocks can be the precursor for more complex pool based services (like 0-confirm surety contracts).
What is the benefit of signed blocks? So we can see who mined it? |
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i'm no expert but i think they use different chips.
Either you are wrong or ngzhang is lying. Different chips in the rig box. |
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I'm new, so if there's a link that explains it better. I won't be offended if you just post that. BUT.... I'm trying to imagine how converting 30 million into bitcoins could put them in a position to create havoc on the network. That would mean even individuals could do it. Just look at how much is being spent on US superPACs. They could buy stuff, they could convert back to USD or what ever at the current rates, they could give the BTC away (in wich case, please can I be in line? I'm still working on my first 1BTC  ) Or they could 'disappear' the BTC which wouldn't be a whole lot different than putting it into a savings account (potentially, that could raise the value of BTC if they took out a large percentage of BTC available?) The only way I can see that they could create havoc on the system is if they could create NEW BTC from thin air (fiat currency). I don't think they can do that, can they? 51% rule. If the US buys out 51% of all the bitcoins out there, they could theoretically control the market. Not if they buy 51%, they need to have 51% of the hashing power of the total network. So if total power is now 11GH/s and they have nothing, they need a little over 11GH/s to be able to double spent. |
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Just wondering what part is broken if you can still determine the chip they used.
Or did you solder the chip off so you can do tests?
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Reality is they could shut it down any time, more or less for free by ruling that US financial institutions can't touch it.
Can you explain that a little more? How can an US financial institution stop me from using or mining bitcoins here in the Netherlands? And if that was possible and I started to connect to the bitcoin network via TOR, how would they stop me in that? Only way I see how anything or anyone can stop something like bitcoin is getting more than 50% of the hashing power. If it would be done by using asic's, we can change to sha512 or something else so they have the investment costs again and we only need new software of bitfiles for fpga. |
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It's an already existing company with already existing products, so my guess is the methods of payment they already support will be supported but they're examining if paying with bitcoins can be an extra option.
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Whats stopping the US government from spending 20 or 30 million bucks and wrecking havoc on the network?
I fear the biggest challenge to bitcoin will come this Dec when the block reward will be cut in half. (Question:will the difficulty drop by a lot so blocks are mined any faster?)
If the block reward is cut in half and there is no substantial reduction in difficulty the mining community will will die off.
The mining will be just the same, just the reward cut in half. So people who spend more than half the money they earn on electricity will probably stop mining, unless they speculate on a rise in price of bitcoins. If enough people stop mining because it's not profitable for them anymore, the difficulty can go lower, what can get people back to mining. So nobody knows what will happen, time will tell. |
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Confirmed Weird. I understand the complete case switch for when the capslock is on. But why would you just switch the case of the first character? |
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Also, if you buy 20 40 or 60 you get a discount.
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If SHA256 is suddenly useless then bitcoin will be probably the minor problem: the whole world, banks etcetc use SHA
Never considered this. Of all the ways you could get rich by cracking SHA encryption, bitcoin's reward:work ratio is relatively low. But if you hack a bank if you can crack SHA, the authorities will probably come for you. If you can hash way faster than other people, it's perfectly legal. |
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