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Showing 17 of 17 results by cypher1024
As far as I know, there is no difference between manufacturers for the reference cards (apart from the graphics printed on them).
There are minor differences between the non-reference cards, but there is no single manufacturer that is consistently better than any other (as far as I know).
My advice would be to get reference cards (or non-reference cards with voltage control). You can undervolt them and save a significant amount of power without losing much of your hashrate.
There are minor differences between the non-reference cards, but there is no single manufacturer that is consistently better than any other (as far as I know).
My advice would be to get reference cards (or non-reference cards with voltage control). You can undervolt them and save a significant amount of power without losing much of your hashrate.
Re: [OPEN] [10/50] Australian ASICMINER USB Block Erupter Group Buy
Also, depending on what ASICMINER declare the goods at on the customs form, GST may be payable as well - 50 units @ $115 each (or thereabouts) is well over the $1000 GST exemption limit.
They sent the blades with a declared value of $250, so hopefully they'll do the same for these. If that's the case, you shouldn't have to pay GST.
Re: [8500 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
Hi, sure i'am using slush pool. 
I have an Radeon 5870 card using with Phoenix 2.0 client, so this client is not stratum compatible, but no prob, as described on slush internet site, i can use proxy miner.
Proxy Miner ist accepting shares..but in my account settings on http://mining.bitcoin.cz/ there is still the warning message about deprecated protocol and in list of worker -> stratum -> no
What's wrong ?
I have an Radeon 5870 card using with Phoenix 2.0 client, so this client is not stratum compatible, but no prob, as described on slush internet site, i can use proxy miner.
Proxy Miner ist accepting shares..but in my account settings on http://mining.bitcoin.cz/ there is still the warning message about deprecated protocol and in list of worker -> stratum -> no
What's wrong ?
I'm not sure what's happening with your proxy, but you might want to try cgminer or bfgminer instead (then you don't need to run a proxy).
Here's a quick guide for bfgminer and cgminer: http://www.reddit.com/r/BitcoinMining/comments/1cfk7y/beginners_guide_dont_use_guiminer_please_upvote/
If that's too complex, I've heard good things about the bitminter web-based mining software.
Re: GUIDE - How to make your own PCIe extender with molex.
Made a few of those... My 7950 pulled enough power to burn through the molex 12v wire ! Tried to use two wires and now the cards crash if I try to overclock them so I guess there must be too much resistance......
Unfortunately, not all cables are created equal. In fact, some unscrupulous manufacturers will mark cables incorrectly. Copper is expensive, so bad cable manufacturers will use less than they should in an effort to make more money. Be aware of this when you're harvesting cables from fans or SATA power adapters.
In front of me I have two cables. One is marked '18AWG' and the other is '20AWG'. The 18 gauge is from a 4-pin molex -> SATA power adapter that I bought on eBay. The 20 gauge is from a PSU.
The 20AWG cable has 21 strands, each with a radius of 0.085mm, yielding a total cross-sectional area of about 0.48mm2. Ideally it should be 0.518mm2, but this is pretty close.
If you're not familiar with wire gauges, it's important to note that wires are larger at smaller gauges (so 18AWG should be a thicker cable than 20AWG). The cable marked 18AWG has 13 strands, and each is approximately 0.1mm in diameter. This gives us a total cross-sectional area of about 0.10mm2. 18AWG cable is supposed to be around 0.823mm2.
Why is this important? It's important because the resistance of a cable (and thus the heat generated by it when a certain amount of current is flowing through it) is proportional to its cross-sectional area. Basically, thin cables get hotter than thick ones. If the cable is just slightly undersized, this will just mean warm cables. If the cable is seriously undersized, the insulation will melt, and the cable could cause a fire.
At most, a PCI-e video card should only be drawing 75W from the PCI-e slot. At 12V, this is about 6.25A.
tl;dr You should use at least 22 gauge cable (provided it hasn't been mislabeled).
I'm definitely interested to get a few of these to give out as presents to get people interested in Bitcoin.
Have you thought about doing something similar with the K16 board? I'd be interested in a few of them as well if you were selling them assembled.
Have you thought about doing something similar with the K16 board? I'd be interested in a few of them as well if you were selling them assembled.
There are a few different ways to do it. One of the easiest is with the blockchain.info tool: https://blockchain.info/wallet/paper-tutorial
how much BTC can I get IF I buy BFL 50 GH/s Bitcoin Miner - $2,499
BitForce 50 GH/s SC ?
BitForce 50 GH/s SC ?
Depends on a couple factors:
1. When you actually get the unit.
2. How much the difficulty increase between now and then.
Let's run some numbers!
If you somehow got a 50GH unit right now, you would be making about $364 per day.
I think Butterfly Labs is predicting at a two month wait, by which time the network hash rate will probably rise to something like 300TH/s, making the difficulty around 42 million. Still, you'd be making $77 a day (if the USD/BTC exchange rate holds).
My guess is that it's going to be *at least* 4 months before you see that unit. It's hard to predict how fast the network will be by then.
If the network gets to 500TH/s, the difficulty will be around 70 million and you'll get $47/day.
1PH/s (1000TH/s) will yield a difficulty of 140 mil and 50GH/s will net you around $23/day.
1.5PH/s and you'll be getting $16/day.
And all of this is assuming that the exchange rate stays around US$130/BTC. If it drops back to $30 where it was before the recent madness, those numbers become:
500TH/s: $10.80/day
1PH/s: $5.40/day
1.5PH/s: $3.60/day
Even if the exchange rate stays high, and you get your unit before the difficulty climbs too high, you won't pay it off instantly. The difficulty is going to keep climbing while you're paying off your unit. It might start at 42 million, but it might be 50 or 60 million before you've paid off your unit.
I wouldn't go with BFL because they still haven't shipped to anyone who has ordered... and even if they finally do... when do you think they will get around to your order?
They have actually shipped a few to paying customers. Here's one: https://forums.butterflylabs.com/jalapeno-single-sc-support/2088-guess-who%92s-got-two-thumbs-jalapeno%85%85-guy%85.html
I think they've shipped less than 20 (out of ~20,000) but it's a start.
Still, if you order right now you're probably not going to see your order for a few months at least.
One possibility I haven't seen discussed is that the 5Gh/s units get shipped before the bigger models. It seems like this could happen if BFL is not able to meet its specs since the smaller the unit the less offensive it is.
It could end up that buying the Jalapeno was the better move.
It could end up that buying the Jalapeno was the better move.
From what I've seen, they are hashing at higher rates than advertised. The notable exception being grnbrg's machine, but it was a 'pre-production sample'.
any links to the fancy maths? i don't get how a miner can give you the ability to generate a private key if he doesn't have the ability to do it himself and might already have done it.
It's actually pretty cool.
From StackExchange:
Quote
Bitcoin addresses are created from ECDSA keypairs. Their property is that if you take two private keys and add them together (with appropriate modulo operations), the sum will map to a public key that is the same one as one would obtain by adding the two public keys corresponding to the private keys.
This means that in order to outsource vanity key generation, one can create an ECDSA keypair, store the private key safely, and give out the public key to other people. They would then proceed to generate ECDSA keypairs, summing the generated public keys to the one provided by you, and checking whether they map to the appropriate vanity address. If it does, they need only to give you the appropriate private key, which you then need to add to your secret private key in order to obtain the private key that maps itself to the vanity address.
This means that in order to outsource vanity key generation, one can create an ECDSA keypair, store the private key safely, and give out the public key to other people. They would then proceed to generate ECDSA keypairs, summing the generated public keys to the one provided by you, and checking whether they map to the appropriate vanity address. If it does, they need only to give you the appropriate private key, which you then need to add to your secret private key in order to obtain the private key that maps itself to the vanity address.
Re: I have 6GH/s, which pool should I join for best payout?
1) Roughly, how many BTC will I earn per day with 6GH/s? (this should go up to ~10GH/s over the next month btw)
Right now you should be making around 0.34 BTC (or US$44.21 at current exchange rates) each day. After subtracting the pool fee, that's around $43.30.
Re: Help me understand Private Keys and the Armory offline wallet
...get a computer that has never touched the internet and I don't plan for it to. I will install the Armory offline client on this computer and create a new wallet...
You don't need to go that crazy. Just boot your computer with a live Linux CD.
The Armory guys provide a package specifically for this purpose.
The general consensus is that if you don't have an order in already, by the time you receive your unit, 5Gh/s will be too slow considering where the difficulty will be at that point. The ROI would take too long to make it worthwhile. If you think the price of BTC will go up, it's better to buy the coins and hold them.
It all depends on how much you're paying for electricity (and what the USD/BTC exchange rate does in the future).
Even with a total network speed of 5 petahashes/sec, the 5GH miner will be producing about 0.11 BTC/month. At current rates, that's around USD$15. It would still pay for itself in 18 months (plus a few extra months for shipping).
Obviously if the exchange rate takes a dive that $15 could very easily become $1.50/month.
I'm not really worried though. In the long term, Bitcoin will almost certainly appreciate well past the current US$130 price.