Marto74
I may have missed this but what's your advice on the PSU to use? What's the max # of boards per suggested PSU?
Thanks
Use single 12v rail psu, 80 plus gold, platinium or titanium do not put more than 10A on a single molex cable ( you may put more but their a not designed for high current) Hex8A1 uses 2x 6-Pin PCI-E connectors. Estimated power draw is expected to be 260GH/260W. |
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I post this in honor of rjk's Mining Rig Extraordinaire (the Trenton BPX6806 18-slot PCIe backplane) Full thread here: https://bitcointalk.org/index.php?topic=64450.0 (thread just popped up to be ended and locked) Final image before he ran into some kind of 11x GPU card limit on the motherboard backplane. Truly legendary!  |
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Oh dear, been closed for more than a hour now! Seen it go down more than a few times since November though. "Sorry, the store is temporarily closed for maintenance.
We expect to reopen within 1 hour (19:00 HK, 11:00 London, 05:00 Wyoming) " http://www.blackarrowsoftware.com |
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They sold miners through card read factory many moons ago. What do you think "smallest portable magnetic stripe card readers in the world" are used for? Many people on these forums have bought their miners and we've had photos from inside their factory, saw their FPGA to ASIC development hardware, if it's a scam, they went to a lot of trouble to hire a factory and fill it with mining hardware.  Of course they could fail. Building a board and putting someone else's chip on it it easier than building your own ASIC from scratch. We saw that happen to bASIC, they delivered FPGAs, but later failed to deliver on a subsequent ASIC project. Many in the community thought Butterfly Labs would be a scam, but they delivered (eventually), on their promises. If you don't want to risk money in a pre-order buy a 28nm miner from Technobit with PayPal, but even he gets scammer accusations! It's just the nature of the Bitcoin market... More risk, more reward! Source?
are you just writing this, or you have some source  Photos of Flappysocks previous order with Black Arrow. https://bitcointalk.org/index.php?topic=294197.msg3866034#msg3866034Photos from inside Black Arrows factory in China. https://bitcointalk.org/index.php?topic=294197.msg3884729#msg3884729Photo of Black Arrows 22nm FPGA to ASIC development board. https://bitcointalk.org/index.php?topic=294197.msg3893629#msg3893629"Re: Butterfly Labs CEO 25 Million USD Mail Fraud — A Concise Summary of Evidence" https://bitcointalk.org/index.php?topic=110805.0"TOWN HALL (prep) Meeting: Butterfly Labs" https://bitcointalk.org/index.php?topic=110786.0"The "What Black Arrow does not want you to know" thread" https://bitcointalk.org/index.php?topic=313049.0"Black Arrow Software real or fake?" https://bitcointalk.org/index.php?topic=365535.0"Blackarrow Software Legit or Scam?" https://bitcointalk.org/index.php?topic=339163.0"Re: "BlackArrow" ASIC's, Trustable?" https://bitcointalk.org/index.php?topic=316214.0 |
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Bitmine says the chip can do up to 40GH/s in Turbo mode. 8*40=320. 260GH/s is all chips working on average at 32GH/s. Will it be possible to overclock this further or is it limited by power supply, cooling or something else?
From what I've read it's a buffer overflow problem? I'll be happy if they can reach 260Gh/260W. Just ship them soon as possible because HashFast is delivering 400GH+ and difficulty will likely sky rocket soon! As long as it's not a big hardware problem (too weak power supply, not enough cooling etc), I agree. I can use the device now and update the firmware at a later date. Which is why I ordered two devices, in addition to the pre-production one. What interests me most is 1W/1GH. CoinTerra is going to deliver 1.6TH machines to the market within weeks but they missed their power targets by a large margin, don't interest me. The limiting factor for most home users is their home power circuit. US miners on 120V will be at a disadvantage soon to 230V European miners. Like I say in my signature, a miners profit is how much they can beat their energy bill, not how many GH they have! |
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Bitmine says the chip can do up to 40GH/s in Turbo mode. 8*40=320. 260GH/s is all chips working on average at 32GH/s. Will it be possible to overclock this further or is it limited by power supply, cooling or something else?
From what I've read it's a buffer overflow problem? I'll be happy if they can reach 260Gh/260W. Just ship them soon as possible because HashFast is delivering 400GH+ and difficulty will likely sky rocket soon! |
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You need M/B and CPU that support PCI 3.0 or you won't get the best speed.
I saw 30% performance boost moving from a Core 2 Quad PCI 2.1 system to i5 PCI 3.0 system with the same graphics cards.
The data bus is just faster on newer M/B and CPUs. I see people put a cheap Celeron CPU on a decent 3.0 M/B all the time and it's just slow!
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There's lots of people in the Bitcoin industry with a shady pasts, even BFL's Sonny did time, so I wouldn't worry about that.
My thinking is they'll deliver, but deliver last, as they started development later than everyone else on the 28nm node.
That's why their price of $3/GH is the lowest out there to reflect this.
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Bitcoinorama promoted to director of KnC Miner http://foundersgrid.com/bitcoin-adoptionAlexander Lawn, director of KnCMiner responds:
Most crucially businesses to apply the transactional cost reduction to consumers. If you were told you could save 5% on every purchase made using Bitcoin as a payment means over the standard electronic payment means, which would you choose? Congrats bro ;-) Is this real? Grats! Credit card companies make the business owner sign a document saying they will not make the transaction fee visible to the purchaser. You can normally get a 2-3% discount by asking to use Debit Card because it's an electronic cheque with a fixed fee, about 15p in the UK. The reason most people do not take American Express is because it's a 4-5% fee. They usually give 1% cash-back to the customer but it's the store who is funding it! |
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Fans should always blow down into the heatsink, not only do they run cooler this way around they also keep the other components cool on the board cool too. This is especially important for VRMs/power modules. Bigger fans = less noise. The design of the blades doesn't matter as much as a lower rotational speed for getting noise down. Getting extra number of blades in the fan improves CFM (airflow) for the same rotation speed. If people want low noise miners I recommend the Bitfury chip stuff as they don't get very hot. My Hex16B are running 92mm Arctic F9 (9 blade) 1800RPM 0.4 SONE 43CFM fans and they're quiet enough to be in the same room I watch TV.  |
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Hashrate: 17,490,240 GH/s  Why? Our miners, not yet "made" and Hashrate increases at a breakneck pace??? I guess they do Mining on them for a long time!  Unlikely. If you want to go down the conspiracy theory route, could be any vendor (Bitmine, Hashfash, Cointerra, BFL), but that seems pretty far fetched. Most likely the hash rate increase is down to some secretive manufacturer(s) like 21e6 who only mine for themselves and don't sell miners. What's the betting there aren't a few more operations out there like that who are so secretive we don't even know their name? roy Occam's razor does not agree with you. It is way more likely that the people who are known to be building this equipment are simply maximizing their profit with it than that a secret manufacturer exists who is throwing all this juice into the network. Your theory is way more 'conspiracy' based. Its probably because HashFast are shipping and people have miners in hand since the last few weeks. |
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This is where we got
8 chips setup @ 800 Mhz
Super taking into account two buggy chips this is exactly where it should be  Nice! Cannot wait for my orders to dispatch 10th Feb  How hot are these things running? Did you have to those horrible 4500RPM fans to get 8x chips cooled? How common are the bad chips? You might need to sell a B grade slower stock if this is typical. Yeah but as far as i know none from chips suppliers is not giving discount for grade b chips still  Except BFL  I think that these two were damaged during development It's going to an issue as boards have fewer chips, and chips have more GH, customers are going to notice a duff chip and complain they didn't get the GH they paid for. Having a graded product price solves this issue. true but if you happen to have 1/8 under performing chips on arrival there is no way to test them the chance to have a board without under performing chip is low. Do you think it is feasable to solder/unsolder the chips one buy one or to give a discount for the whole batch? I do not However real/production chips should be tested in advance that issue is nonexistent ....And let us do not forget it is prototype and guys are constantly changing something Here is comment from zefir https://bitcointalk.org/index.php?topic=294235.msg4796119#msg4796119Pre-testing takes time and costs money and then your stuck with chips nobody wants. Martin can just get them out the door faster, and customer gets what they expected. There's a market for sub €1500 units too that nobody is filling so the graded items will fly off the shelves if priced right. I think someone here already asked Martin for a 4x chip board, well they could have an 8x chip board with 4x bad chips on it. You can mine on the graded stock to protect it from depreciation until a buyer buys it and there's always going to be demand for an in stock item over a made to order one. |
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This is where we got
8 chips setup @ 800 Mhz
Super taking into account two buggy chips this is exactly where it should be Nice! Cannot wait for my orders to dispatch 10th Feb How hot are these things running? Did you have to those horrible 4500RPM fans to get 8x chips cooled? How common are the bad chips? You might need to sell a B grade slower stock if this is typical. Yeah but as far as i know none from chips suppliers is not giving discount for grade b chips still Except BFL I think that these two were damaged during development It's going to be an issue as boards have fewer chips, and chips have more GH, customers are going to notice a duff chip and complain they didn't get the GH they paid for. Having a graded product price solves this issue. |
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Super taking into account two buggy chips this is exactly where it should be Nice! Cannot wait for my orders to dispatch 10th Feb How hot are these things running? Did you have to those horrible 4500RPM fans to get 8x chips cooled? How common are the bad chips? You might need to sell a B and C grade (slower) stock if this is typical rather than mess around taking chips off. |
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I just noticed this morning the Euro BFSB has new stock if anyone is interested. http://www.bitfurystrikesback.com/shop/Bitfury chips are still some of the most GH/W power efficient on the market. For anyone new to mining without a 28nm budget/pre-order I would suggest old Bitfury chips rather than stuff made with old BFL/Avalon chips. |
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All I propose!!! In all forums in all languages BITMINE declare a SCAM. ....
We are waiting for an official answer to every user!
and what? Will you get your asic using such way? What is the goal? alert other users of orders BITMINE Scammers don't usually give you their name and address http://who.is/whois/bitmine.chor put their face up on Youtube. http://www.youtube.com/watch?v=OQY3Y8shBY8The chips have been received and tested by a third party. They ran at a little over 30GH rather than 40GH. If there is a 25% shortfall they should just get units out and give 25% store credit off the next purchase in my opinion. Turning a problem into a way to drive more sales. |
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I have yet to receive my order or an idea of when it may ship (now 17 days past payment clearing).
What payment method did you use? I used credit card sock puppet fail? It should be credit card companies risk or any shops risk if they don't deliver to the card holder's address. I'd be uneasy about sending Bitcoins to these guys are their domain registration is hidden and that's not a good sign normally. |
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Toilet paper and cardboard boxes literally right against stacks of potential ignition sources, A++ would ignite again.
Those multiplugs are a fire hazard if you're not careful how much you load onto them. I'd check how warm the cables feel. |
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I have yet to receive my order or an idea of when it may ship (now 17 days past payment clearing).
What payment method did you use? |
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