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Topic: 4 mines for sale (from 1.5PH to 5.2 PH) - page 2. (Read 7848 times)

member
Activity: 105
Merit: 250
August 31, 2015, 08:06:37 PM
#13
If anyone is looking for space to host these machines, our rates start at $60/kW, including tax, but go lower for bulk orders. [email protected]
hero member
Activity: 816
Merit: 1000
August 31, 2015, 04:14:06 PM
#12
Yeah that's it. I remember thinking that corrugated cardboard makes terrible heatsinks.

Lol please tell me thats a joke....Chips on their boards don't even have heatsinks...I don't know whats worse.

This was a pretty effective setup.  Not many BF Gen 1 users used heatsinks.  The setup consisted of an Rpi, a backplane, and the hashing boards, each with 16 chips that could be tuned dynamically.  These miners were available to the general public before the Antminer S1 was even announced. 

legendary
Activity: 3318
Merit: 1848
Curmudgeonly hardware guy
August 31, 2015, 03:06:38 PM
#11
Likely the cardboard was just for stability during shipping. Heatsink-less boards are not uncommon for sparse Bitfury gear like that, where the whole PCB might be pushing under 20 watts.
legendary
Activity: 1378
Merit: 1003
nec sine labore
August 31, 2015, 02:56:44 PM
#10
This is one crazy farm. Never heard of these miners either. Looks like a custom setup.
Guessing they are using Gen1 Bitfury chips ?

Yes, looks like I've already seen that board.... they were made in Russia.

spiccioli
legendary
Activity: 2117
Merit: 1397
August 31, 2015, 02:48:31 PM
#9
Yeah that's it. I remember thinking that corrugated cardboard makes terrible heatsinks.

Lol please tell me thats a joke....Chips on their boards don't even have heatsinks...I don't know whats worse.
legendary
Activity: 3318
Merit: 1848
Curmudgeonly hardware guy
August 31, 2015, 02:15:11 PM
#8
Yeah that's it. I remember thinking that corrugated cardboard makes terrible heatsinks.
hero member
Activity: 588
Merit: 500
August 31, 2015, 02:14:46 PM
#7
Due to high power prices in Europe and low BTC price we are shutting down 4 mines located in Poland and offering the hardware for sale at $0.20 per GH. The power efficiency of the mines is 0.84 J/GH (measured at 15kV level). The power efficiency can be improved by reducing voltage or replacing PSUs with more efficient ones (the current efficiency of PSUs is approximately 80%). The mines are build using 55nm chips on string boards. A miner consists of 48 boards with 15 chips on each board and is powered with 3 separate 500Watt PSUs. Voltage is reduced to 11.4V to improve power efficiency.

0.84 J/GH is looking very dated these days, particularly with the new Bitmain S7 offering 0.25 J/GH with scope to better that with a reduced voltage. What do you estimate is the best possible with your Miners with better PSU's & a reduced Voltage?
hero member
Activity: 686
Merit: 500
FUN > ROI
August 31, 2015, 02:10:08 PM
#6
I saw pictures of miners like that sometime in the last few weeks but I forget where. Looks to be akin to Yaizo/OneString design with a high-density backplane.

some more pictures of BitFury's old efforts pop up: http://www.cybtc.com/article-1891-1.html
perhaps?
legendary
Activity: 1456
Merit: 1000
August 31, 2015, 02:03:49 PM
#5
Wow that is a lot of miners to buy.  Would be interesting if someone comes in and ships to very low electric costing area.   

I keep thinking some day some A1 and similar gear will be pulled from network on big mines.  Maybe this is showing a possible future of this happening. 
legendary
Activity: 3318
Merit: 1848
Curmudgeonly hardware guy
August 31, 2015, 01:53:19 PM
#4
I saw pictures of miners like that sometime in the last few weeks but I forget where. Looks to be akin to Yaizo/OneString design with a high-density backplane.
legendary
Activity: 1652
Merit: 1067
Christian Antkow
August 31, 2015, 01:44:22 PM
#3
This is one crazy farm. Never heard of these miners either. Looks like a custom setup.
Guessing they are using Gen1 Bitfury chips ?
legendary
Activity: 3738
Merit: 1708
CoinPoker.com
August 31, 2015, 01:38:22 PM
#2
This is one crazy farm. Never heard of these miners either. Looks like a custom setup.
full member
Activity: 261
Merit: 100
August 31, 2015, 01:32:19 PM
#1
Due to high power prices in Europe and low BTC price we are shutting down 4 mines located in Poland and offering the hardware for sale at $0.20 per GH. The power efficiency of the mines is 0.84 J/GH (measured at 15kV level). The power efficiency can be improved by reducing voltage or replacing PSUs with more efficient ones (the current efficiency of PSUs is approximately 80%). The mines are build using 55nm chips on string boards. A miner consists of 48 boards with 15 chips on each board and is powered with 3 separate 500Watt PSUs. Voltage is reduced to 11.4V to improve power efficiency.

The 4 mines have following parameters:
Mine    TH    miners price
1    1500    1400    $300k
2    2200    2200    $440k
3    4300    5200    $860k
4    5200    5500    $1040k

Total hashrate of all 4 mines is above 13PH. When clocked to nominal 12V the mines achieve a total of 18PH at a power consumption of 1J/GH. The buyer must cover transportation costs. The offer can include the racks, wiring and transformers (15kV->0.4kV).

Direct contact: [email protected]

Few photos:

Single miner:
http://41.media.tumblr.com/2e2c4ddb4daaf87c913610a35336c212/tumblr_ntyj5o80s01ufrphao1_1280.jpg
http://41.media.tumblr.com/cc431e45e57258cd5eef879b9b6e3f2c/tumblr_ntyj5o80s01ufrphao2_1280.jpg
http://40.media.tumblr.com/386bd73425071d1bda0adf9bd88c37b9/tumblr_ntyj5o80s01ufrphao3_1280.jpg

Inside the mine:
http://36.media.tumblr.com/c9df787077ead6a1096825be92e0a29e/tumblr_ntyj8gfebz1ufrphao1_1280.jpg
http://40.media.tumblr.com/adb5951d2741ff8616a28c77bd5d6de6/tumblr_ntyj8gfebz1ufrphao2_1280.jpg
http://41.media.tumblr.com/926d901f33e96a662df92118c13a2342/tumblr_ntyj8gfebz1ufrphao3_1280.jpg
http://41.media.tumblr.com/4f0368adba1d2906944fc2b622ec3581/tumblr_ntyj8gfebz1ufrphao4_1280.jpg
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