Topic: 4 mines for sale (from 1.5PH to 5.2 PH) - page 2. (Read 7894 times)
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]
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.
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.
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
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.
Yeah that's it. I remember thinking that corrugated cardboard makes terrible heatsinks.
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?
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? 
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.
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.
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.
This is one crazy farm. Never heard of these miners either. Looks like a custom setup.
Guessing they are using Gen1 Bitfury chips ?
This is one crazy farm. Never heard of these miners either. Looks like a custom setup.
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
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
Jump to: