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Author Topic: Advice for a start for a Mining Farm  (Read 3013 times)
boconniff40
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March 11, 2012, 11:29:13 PM
 #21

have a look at FPGAs, cablesaurus selling them. Are you okay (with that rig you spec'd) with getting half as many BTC before end of year?
There's some speculation that it may happen this year and then mining becomes less worthwhile unless you can get power costs way down.

I'm replying on phone so parden grammer and typos.

I have a unique situation, that I don't pay for power.  I do own my own place, but without getting into details I have no power cost. 

I love the concept of fpga, one computer, space and power and heat savings.  Sadly, at this stage, its more bang for buck with video cards, but I want to go fpga in the future.  I dreamed up mounting 10 fpgas to acrylic and submerge them into oil, but that is an upgrade step after ROI.  I would like the rigs to pay for their own upgrades down the road.

So far thanks for tips.  I have a huge step to learn lynix enough to run bitcoin on them and get them wireless (due to power restrictions placement).  But at least i know I'm heading in the right direction and won't waste money on poor setups with all of everyones help.

Thanks again, if u got more advice, keep it comming.

-elrodvoss

What in the eff do you mean with this? Why would you submerge "10 fpgas to acrylic and submerge them into oil" ?
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chsados
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March 12, 2012, 07:10:44 AM
 #22


What in the eff do you mean with this? Why would you submerge "10 fpgas to acrylic and submerge them into oil" ?

http://youtu.be/PtufuXLvOok
boconniff40
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March 12, 2012, 12:38:12 PM
 #23

lmfao that's lame... just stick to liquid cooling
John (John K.)
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March 12, 2012, 12:45:38 PM
 #24

lmfao that's lame... just stick to liquid cooling
You would need to have waterblocks for the fpga's custom made then.

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March 12, 2012, 01:39:16 PM
 #25

lmfao that's lame... just stick to liquid cooling
You would need to have waterblocks for the fpga's custom made then.

They do make universal waterblocks.  If BFL would just put some damn holes in the board.  They make water blocks which can adjust to everything from 28mm to 80mm hole spacing.  BFL just punch two holes in the PCB and people could use any custom cooling they wanted.  It you can't/won't for this board at least consider it for the next board.  Having 2 push-pin holes put into the board would add about $0.02 to PCB production cost.  Everything from third party CPU coolers to waterblocks to phase change and TECs would be possible if they had 2 pennies worth of holes punched into the board.
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March 12, 2012, 01:43:12 PM
 #26

lmfao that's lame... just stick to liquid cooling
You would need to have waterblocks for the fpga's custom made then.

They do make universal waterblocks.  If BFL would just put some damn holes in the board.  They make water blocks which can adjust to everything from 28mm to 80mm hole spacing.  BFL just punch two holes in the PCB and people could use any custom cooling they wanted.  It you can't/won't for this board at least consider it for the next board.  Having 2 push-pin holes put into the board would add about $0.02 to PCB production cost.  Everything from third party CPU coolers to waterblocks to phase change and TECs would be possible if they had 2 pennies worth of holes punched into the board.

Now that's news to me. Can't we drill the holes in, aftermarket style? Or is it the PCB's so damn packed till we can't even drill em ourselves?

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Gerald Davis


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March 12, 2012, 01:53:44 PM
 #27

lmfao that's lame... just stick to liquid cooling
You would need to have waterblocks for the fpga's custom made then.

They do make universal waterblocks.  If BFL would just put some damn holes in the board.  They make water blocks which can adjust to everything from 28mm to 80mm hole spacing.  BFL just punch two holes in the PCB and people could use any custom cooling they wanted.  It you can't/won't for this board at least consider it for the next board.  Having 2 push-pin holes put into the board would add about $0.02 to PCB production cost.  Everything from third party CPU coolers to waterblocks to phase change and TECs would be possible if they had 2 pennies worth of holes punched into the board.

Now that's news to me. Can't we drill the holes in, aftermarket style? Or is it the PCB's so damn packed till we can't even drill em ourselves?

The board is very tight.  Generally you would want the board designed for holes in particular.  Also a PCB shop will have very high speed drill presses with tapered bits to ensure no slipped bit = destroyed $600 board.

The other issue is it looks like BFL used a thermal expoxy for mounting the heatsink.  You aren't getting it off.

However if BFL offered a board with
a) holes in PCB for mounting heatsink
b) no heatsink, fans, case, or powersupply
c) offered it for $30 less
you could make a monster watercooled cluster.

Smiley

Send them an email asking them for that.  They likely won't but if they get enough requests maybe they will consider it for next revision of the board.
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March 12, 2012, 02:08:00 PM
 #28

Hey, that's a good idea! I'll do this too, maybe to let them know there's interest in this getting done. I need liquid cooling here to run one as I'm living in the tropics right now.

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Gerald Davis


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March 12, 2012, 02:14:10 PM
 #29

As an example here is a universal block which can mount to hole spacing between 53.5mm to 61.5mm.

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March 14, 2012, 01:47:56 AM
 #30

Where are you located?

54Gh/s bASIC Bitcoin Mining Devices
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elrodvoss
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March 14, 2012, 02:57:52 PM
 #31

Where are you located?

Im south of chicago, IL

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