Honestly for me 375 has been the best.
At 400MHz, my miners show 199-204GH in the webUI, but 209-214 at the pool (ghash.io). Im quite happy with these figures, but would like to adjust down slightly to reduce power draw and heat (hence 390 would be a nice value) |
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does anyone know if there is settings for 410MHz or 390MHz? Would be nice to be able to adjust in steps smaller than 25MHz
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To the folks that made their case out of wood... Any worries of it catching on fire? flexing and such?
I really want to make one, and im wondering if there are any faults or downfalls in using wood
Danny
it would need to go well over 150-200 celcius to even singe, let alone catch fire. Wood is easy to work with, and does not conduct electricity. however, it is less 'clean' and heavier compared to aluminum |
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Guys, I am not saying I want to sell but just to get a feel for where you all are at. I have 1 v-1 mboard and 4 v1 h-cards. The partial rig does 130GH/s pretty solid. What do you think the miner to miner BTC value would be all together or in pieces. For the record this has been one set that has needed no extra attention and very little time to keep her chugging.
I am not trying to sell in this thread, I know where to do that. I am only trying to get a metric from the audience that has the most interest in these and that is you guys.
Just Information for me and for Tytus.
M-board V1=?
H-card V1.2=?
In my mind, 0.75BTC for an M-board and 0.65BTC per H-board is a price that enables the kit to come close to breakeven, and promotes buying more cards |
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1) a little bit too expensive. I would pay 3.75BTC for another antminer
2) doe shte 'current owner' discount replace, or add to, the credit of 0.1BTC for each anminer purchased - or does that apply only to bitmain auctions?
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xxoxoxxo oooooooo oooooooo oooooooo
oooooooo oooooooo oooooooo oooooooo
178 Gh/s
Freq OC to 375
Connected via WIFI
Pretty happy with this after all of the setup issues but...
Is this acceptable/common on these machines having 5 chips out of service?
no, its not. you should have all chips in operation always if possible. reboot the unit and see if that helps. otherwsie, check your PSU. at 375MHz you will need at least a 450W 12V rail, preferably 600W on a single 12V rail Must be the psu. Running an OCZ 550W +80 having two modular pci, one for each board. What if I have 800 two rail? Enough to OC to 400 MHz? Otherwise what brand is advisable for single rail that splits into 2 6pin pci? Thanks Personally, I have 1 machine running on a 600W Corsair, which claims 560W on a single 12V rail. It is happily operating a 400MHz antminer (from the second batch) and seems problem-free around 48/50 degrees, 2 fans and some paper overtop (the paper does help) using 1 4-pin ATX per board (wires are barely warm). That said, not all PSUs (or electronics in general) meet the specs. some can handle more then rated and some struggle to come close, even in the same brand or batch. Even if you have more than the required (~500W?) available on your 12V rail the PSU may not be capable of providing the limit 24/7. ALSO: make sure that if you have 2 or more rails each board has a seperate rail with enough amperage. I have a 730W PSU with roughly 325W available on 2 rails. 1 rail is used via the 2x4pin ATX cable, and the other via the PCI-e cable. |
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I'm trying to show Tytus how much I can sell at these prices by Jan 1, so lets see if he likes lots of sales versus very few!
Thanks for putting up full rigs for re-order, Dave. Didn't realize Tytus was the price driver. Hopefully prices will become more sane after Jan.1st yikes, the prices still are not that great! Single boards for $700, thats reasonable. but a full rig at 16x$700? There needs to be a bulk pricing, at least for the H-boards. 5/$3000 or 10 for $5500 would be more appealing, and even those prices are high considering BTC price at the moment |
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unfortunately, the creater/hider of the coin would have no incentive to actually hide it, or to not come back for it a month later under a different sudonym and claim they found it.
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Its worth putting here that the 2013 gold-plated silver coins are LARGER than 39mm. the cases included with the coins direct from Mike do not fit the coins, at least not without using a lot of pressure and 4/5 coin cases cracking under the pressure either immediately or up to a minute after putting it to the side.
the coins must be slightly larger than 39mm due to the gold plating, maybe 39.02mm?
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Before I start to blather, I would like to thank Dave and the MBP team for having it together more than any other Vendor at the time I placed my order in August. They have always been responsive to me and shipped damn near exactly when they said they would.
After dealing with BFL, shipped within a month of stated date would be considered damn near exactly and MBP did allot better than that.
Now for my blather. As the time of this penning If I had to buy BTC right now to buy anything I can buy on Coinbase for $680 per BTC. I am using this because MBP priced in USD.
I have 12 empty slots on my V1 Mboard. I would like to get it filled, so about 12,000 dollars not including any price break. I am too lazy to look up the price break, I sure someone will apply it. 12000/680 = 17.65 BTC roughly, If I had to buy it. That would get me roughly 384-400 GH/s more.
For 16.8 BTC We can buy 4 antminers giving 800GH/s overclocked.
So for me it was a no-brainer to get the power hunger antminers.
I did not get 4 but 3 I almost went for another today but decided against it.
I would have much rather filled my V-1 mboard but......
100% agree. the prices should be in BTC, and should be at least reasonable. even at $749 in bulk for v1.2 boards, they were too expensive the day they were priced, and are twice as poorly priced now |
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Intron - Is this design based on the same idea that Tytus had: 2. 8-chip cards that were supposed to give more hashrate per chip using the same 30Amp power regulator, this design failed !!! the new PCB was designed as 2 layers and it generates too much noise to connect 2 h-cards in one bank ... so we can use such cards only in the last position of the bank. 3. provisional 5V string designs [no power regulator], this is a very promising design, chips run very clean and fast, but require cooling. If this is not provided or if it fails, chips heat up, leakage increases, chips consume more power and heat up more and melt and burn finally http://150.254.111.246/img/S7300314.JPG, http://150.254.111.246/img/S7300316.JPG ... the chips don't have any thermal sensors so I am still thinking how to detect such problems using the hardware we have. (in case the images above don't work here are the two images again: http://imgur.com/D7yH26n and http://imgur.com/gqVOtA5 ) and where you later commented that it was an experiment that went out of control - It's an experiment that went a bit out of control. The latest scientific explanation I heard is that "the boards don't like women." Not really sure about that though:) intron So basically - is it the same design? If so - what has been done (and was there anything done) to avoid the same outcome as tytus' ? And just out of curiosity - are you guys going to be publishing the design schematics? this was my concern too, but intron's design has its own controller, so perhaps (hopefully) it is capable of detecting a lost chip and acting (restart the mining process or turn off) so that we dont see a bunch of home fires and molten PCBs |
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make a cleaner version that has a little bit of shielding between the terminals, and i would be strongly interested in 1 or 2 of them |
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1) no
2) maybe, but probably not - litecoin asics are not far away, and a gpu rig will not pay for itself if that happens
3) i would suggest this
4) probably not - most 'rental harware' is a ripoff. the only one close might be the 100TH (now 500TH) mine.
5) iffy suggestion - if it goes offline and stays unfixed for several days/weeks/months your investment is lost
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xxoxoxxo oooooooo oooooooo oooooooo
oooooooo oooooooo oooooooo oooooooo
178 Gh/s
Freq OC to 375
Connected via WIFI
Pretty happy with this after all of the setup issues but...
Is this acceptable/common on these machines having 5 chips out of service?
no, its not. you should have all chips in operation always if possible. reboot the unit and see if that helps. otherwsie, check your PSU. at 375MHz you will need at least a 450W 12V rail, preferably 600W on a single 12V rail |
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Anybody managed to control the fan speed? I want to put it much higher as I am suspecting overheat
get a 4-pin to 7V molex or 12V molex adapter. If you have it run at a fixed 7V it may be low, but you can set it to be at 12V all the time if you dont mind the noise |
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Now can you please provide data for the maximum 24/7 safe current per 18AWG wire.
My own research led me to believe it is much lower than 9A.
Useful table here http://www.powerstream.com/Wire_Size.htmusing "The Maximum Amps for Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle." AWG 18 is okay up to 16A (~<200W @ 12V) I highly doubt that you can run 550W through the PCI-E cable without any consequences. One of my PSUs (Cooler Master V850) is powering an October Jupiter and each module is being fed by a different PCI-E cable and still they get noticeably hot (around 44 degrees max). Or try to connect 2 modules per PCI-E cable and it gets even hotter, yet the current per strand is only around 8-9A. I use the 2x4pin ATX plug wires to run ~500W for an overclocked antminer |
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No Overclock. Corsair 1200 ATX PSU that feeds a total of 3 Antminers. 1140 Watts at the wall.
That's cutting it too close for stable operation of 3 units, IMO :| FWIW, I've found it best to leave myself 20% headroom on PSU's. Don't confuse AC with DC. 1140w AC input @ 90% efficiency = 1026w DC output. Well under the 1200w rated output. So this means I'm good and I can discard the PSU as the potential culprit for the errors I'm seeing? No, this mean what i say before, that your PSU is to small for 3 Ants. 360-390watt each x3 =1080-1170watt consume. If your PSU bring 1200watt max output, you will got effective about 1030w. So in any case it is to low! You can believe it, or test it as i wrote above, or wait for 10 more opinion with the same result. I think I agree with this. Not all 1200W PSUs are really capable of 24x7 operation at max capacity. If the power falters chips can be disabled for error rates. In comparison, Graphics cards only draw maximum capacity for a few minutes or hours at a time. |
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anyone have advice for NOT ruining the SD card everytime the unit power cycles? Using 'sudo reboot' after a chainminer update (because the SD got ruined and i had to re-write it using an image from early november, since noone seems to have uploaded an image with the chainminer update) ruined the SD for the second time today.
ps: of the 2000 newly stocked h-cards, only about 30 have sold. is there any plans to reduce the cost to something reasonable?
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didnt a similar design implemented as an H-board have a problem where if a chip shut off, all other chips became overvolted and shut off or melted?
As a side note: this string configuration of chips is beyond brilliant, I think we must honour Valery for this. I have never seen anyone doing this before. It makes board design so much simpler, elegant and less costly. intron +1 BF is the most integrated chip design of all SHA-256 hashers. It's like Intel Haswell with included clock, Vreg, and logic. What's missing is auto-overclock and p-states  just jk. btw which MCU are you using? Thanks! all i can say is: thank god this design does not rely on a Raspberry Pi controller. Somehow my bitfury rig went its first 20 shutdown cycles without any issue, but since then it seems everytime i need to adjust it, the card is damaged. Just today i had to format it, run for 10 min, make the new chainminer, then after a few min of 0.000 results i used sudo reboot and the SD is dead again |
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