After a full scan it found 4 wallets, 900 encryptet keys and 1800 unencrypted keys. It only imported those 306 keys from last time. 0 coins. Guess my coins are lost forever.  I made 4 or 5 backups back then. But I forgot about bitcoin for a while because of the low value, and one disk after another failed. I'm even pretty sure I made an online backup, but I can't find it anywhere... Thanks for all the help though! Contact http://www.datagenetics.com/ and offer them a portion of the hoard if they manage to open it? Since 'change' privkeys are generated based on a sequential seed iirc, you might be able to get into others other using those and a smaller amount of bruteforcing, if not they may be able to take the wallet apart and avoid the corrupted areas crashing bitcoin-qt. Worth an email at least eh? I sent them a random one just to tell them about bitcoin the other day, they might be interested. Check out their blog for some of their pretty amazing work, and some comedy including this.  |
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Grrr, I'm having lots of stability issues running three hubs from the RPi's two USB ports. I've removed one hub, so now I'm running 5x USB Erupters and 3x Blue Fury ASICs (+1 wireless dongle)
The pi's USB out is from a hub anyway. Try plugging the hub that will be daisy chained into the very first port of one of the hubs. |
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It's probably legitimate... I received the call as well last week and was only offered 10% despite being a Day 1 order as well as having other orders. My guy was definitely Filipino.
The best move for BFL's owners probably would be to sell the company to an overseas investor and disappear at this point. Especially if that PCI-E card takes 12 months to show up. They may have already done this, or maybe just outsourced their phonelines so they don't have to deal with abuse. |
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Took the arctic freezer pro off of my BE in order to make it look like a mini blade!  It sits on top of this, (old pic, more fans and closed case now)  The back of one of my GPUs looked like this after a capacitor randomly fired a stream of sparks at me and burst into flames.  |
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Just say it crashes in gaming, I had a 7970 that mined perfectly at 730khash yet one of the VRMs would get stupidly hot and any game would crash after 5-10 mins! Mined 105LTC on it and got a full £315 refund on it.
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Yes, that whole concept of not reaching ROI because just holding coins would have offered better returns really does not preclude people from attaining a profit in pure dollar terms.
There is always something that could have gotten you better returns. The only question to be answered is whether you personally end up with more of anything than what you started with. If yes, then you win.
worth remembering too youll end up with hardware (diminshing resale value perhaps, but nonetheless a physical item It's the only reason I bought a BE, cost me roughly £10 after deducting earnings and at the rate BTC is going today it might actually return more than I paid in GBP once converted from BTC. I bought it thinking I would make 50% back, actually got 80% so far. |
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You ought to do it properly.  |
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I don't know exactly (need to ask a professional), but in Latvia a company registration number seems to be not the same as VAT number. The second is being assigned separately after request and review of the company and let to claim VAT returns (inspectors can visit the place where you operate your business to check that it is real and trustworthy). These rules were imposed to prevent fraudulent VAT returns which are rather common in Latvia. Bitcoin is not regulated in Latvia at all, so I very doubt that our state's revenue service will ever assign VAT number to the Bitcoin mining company.
May be you know more about it, e.g. other EU counties that allow easier ways to get VAT number?
Describe yourself as a data centre hosting computer processors and providing/using calculation power rather than saying a "mining company". |
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cable reworked but no luck so far, also wrapped some alu foil around it, doesnt help.
Try making it much shorter, SPI communication over unshielded cables is probably the problem. |
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I See...
So am I best off using powered risers for ALL of the cards then, or just the last 2?
Any other opinions...? Or is this gonna fix my issue?
 Yeah you should only have 2 cards powered from the motherboard, even then that's >10 amps being supplied through 2 pins on the ATX connector then being routed across the board's traces to the PCI-E slots. Alternatively you could directly inject power to the slots by adding a 12V wire across the bottom of the board soldered to the correct PCI-E pins. |
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If you are a company in the EU with a VAT number then you don't have to pay the tax.
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How do you install ASIC into a computer? USB? PCI Express? To date all rigs have either been standalone (the rig has ethernet and you just connect it to a network) or use USB to connect TO a computer (host). None have been installed inside a computer. How does power usage of ASIC compare to GPU mining? It is not even close. Depending on the ASIC model, a GPU uses about 50x to 500x as much power. https://bitcointalk.org/index.php?topic=281279.0A 2.5W USB Block Eruptor outhashes many 200W+ graphics cards. Does anybody still use GPU's for mining BTC? No. Well maybe if they already own GPUs and they have free power but even then it is getting close to the point it isn't worth it. LTC gets 4x as much in USD value as BTC mining, just mine it and convert, even that's getting close when you pay for power. Anyone still GPU mining BTC is either daft and using free power, or daft and loosing money. |
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The heat can be useful, looking forward to it now that I'm moving into a house with single glazing and £26/month fixed electric bill.
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Box fans have worked well for bitcoin miners for years, make sure you add them blowing the same way as the rig fans. Also ducting exhaust out through wall/towards or through a window can be very helpful.
Also you could get a portable AC unit and pipe the output of that into the inlet of your ASIC. I recall someone having great success doing that with an Avalon and getting roughly 100Ghash whilst keeping it cool.
You don't want to chill the chassis itself, it doesn't create heat so that would be a perfect way to cause lots of condensation which the electronics wouldn't like!
As you're planning on keeping it in the centre of a room, maybe put a sheet of non slip matting and large sheet of wood on top to protect it and turn into a large coffee table. This will hide the box fans/AC and keep it safer from knocks, spills and feet. Also, it'll prevent the exhaust and intake air from mixing as easily above the unit.
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As the title, I've come across these for under $100:  The manufacturer website claims they're GPU compatible but no real further info. http://www.supermicro.nl/support/resources/Riser/riser.aspxHas anyone ever used these? Could be perfect for my needs. Want to get another couple of cards but not build a new rig. You can even see on the picture it has the solder footprint for a 6pin power cable and what is probably space for ripple smoothing capacitors to take the strain off the motherboard and supply clean power to the cards. |
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So is the only reasonable path using gpus?
I hope you don't hope to use a GPU on an Rpi. |
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Any chance of cheap scrypt rig colocation?
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yeah that is true. I'm just going off of the current market and I personally thing cointerra is the best.
I have never heard of cointerra before now and you dismiss all the other major parties pretty quickly (except perhaps KNC but they havent shipped anything yet). I am thinking perhaps you have a vested interested with cointerra? Either that or this company has completely flown under my radar. "Coming into the ASIC market is CoinTerra, headed up by Ravi Iyengar, former CPU Lead Architect at Samsung’s Austin Research Center (SARC). Ravi’s focus at SARC was on the CPU Mid-Core, including integer execution and special purpose registers (good for Bitcoin). His history also includes helping design chips for the SGS4, as well as stints at Intel, Qualcomm and NVIDIA. At CoinTerra he is joined by Jim O’Connor, VP of Engineering with a history of SOC design and Dr. Naveed Sherwani, CEO of Open Silicon. CoinTerra has raised $1.5 million from investors to fund development costs and an initial production run. CoinTerra’s first high-end product for launch is listed as a 2000 Gigahashes per second Bitcoin miner (or 2 TH/s), powered by four 28nm ASICs running at 500 GH/s each. These would be housed in a 2U air-cooled container, and draw up to 1200W (estimated) for 0.6 W/GH/s." They do sound like they know what they're doing. http://www.open-silicon.com/management/"Dr. Sherwani co-architected the Intel microprocessor design methodology and environment that has been used in several leading microprocessors. Prior to joining Intel, he worked as a consultant for various telecommunications and computer companies, mainly focusing on ASIC design flow and cell library design to improve time-to-market. He also served as a Professor at Western Michigan University, where his research concentrated on VLSI Physical Design Automation, combinatorics, and graph algorithms." http://www.linkedin.com/in/jgoconnorhttp://www.linkedin.com/in/ravidiyengar |
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