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Author Topic: Minimalist Spartan6-LX150 board  (Read 48427 times)
bulanula
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November 10, 2011, 11:04:01 AM
 #121

WOW FPGA really is picking some steam. I think ngzhang took it to the next level with his really neat professional board. Now only if the cost was reasonable Grin
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November 10, 2011, 11:50:23 AM
 #122

PCI-e is just a pain in the ass for mining. You need gold finger controlled impedance PCBs, a
flash PROM to configure the FPGA before the PC BIOS scans the bus, much more complex
interface logic in the FPGA, more complex SW, and possibly a $$$$ high speed scope if
something goes wrong, just to provide insane amounts of bandwidth you don't even need.

Plus, putting 16 $150 BGAs onto a single giant PCB is a bad idea. 1 out of every 20-30 boards will have
a critical defect under 1 of the FPGAs, costing you either $2400 to scrap the board, or a bunch of time and
money to try to remove/reball/repair it. There's a good manufacturability reason to use only 1-2 FPGAs per PCB -
if something goes very wrong you're out $300, not $2000.

-rph


That oblem is solved using a socket on the motherboard or something like what you have invented in your design.
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December 05, 2011, 02:16:18 PM
 #123

I must say, months ago when I first stumbled upon the bitcoin, I lost hope in ever utilizing it as a online payment alternative because of GPU+Power costs, and the fact that the value dropped greatly within 2 months (Back when I was concerned with profiting from it, alone).

I'd be able to afford these up-and-coming FPGA boards, and would be willing to tag along with a few pools. I am devoted again thanks to these recent advancements.

What'll they think up next?  Cheesy
DeepBit
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December 05, 2011, 05:00:16 PM
 #124

I must say, months ago when I first stumbled upon the bitcoin, I lost hope in ever utilizing it as a online payment alternative because of GPU+Power costs, and the fact that the value dropped greatly within 2 months (Back when I was concerned with profiting from it, alone).
May be you misunderstood how the bitcoin works ?
You don't need to mine bitcoins for using it as online payment system. You just earn or buy coins when you need them.

Welcome to my bitcoin mining pool: https://deepbit.net ~ 3600 GH/s, Both payment schemes, instant payout, no invalid blocks !
Coming soon: ICBIT Trading platform
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December 05, 2011, 05:12:05 PM
 #125

I'm well aware of how I can buy bitcoins. However, my intention is not to simply buy into them; after all, market trends show that to be somewhat negligible a route for someone expecting to profit from this. No, my only intention is to add to the market and trade as much as I can on the coin alone.

Course, I could buy just a coin or two, but I'm just going to get into mining. And besides that, I'm not very confident in my trade skills.
n0ne
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January 26, 2012, 03:54:21 AM
 #126

Updates on the project?

ZodiacDragon84
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February 01, 2012, 11:31:41 PM
 #127

Interesting

Looking for a quick easy mining solution? Check out
www.bitminter.com

See my trader rep at Bitcoinfeedback.com
!
punningclan
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May 03, 2012, 01:46:39 AM
 #128

Thats a very nice looking board at a competitive price, subscribing!

It was a cunning plan to have the funny man be the money fan of the punning clan.
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June 23, 2012, 08:13:07 PM
 #129

How are you boards coming along? Any more details on your hash rates/problems you encountered/have you given any more consideration to selling?

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June 24, 2012, 02:55:42 AM
 #130

How are you boards coming along?

I've been mining on them for several months now.


have you given any more consideration to selling?

No, I don't really want to be in the board-making business.

The printing press heralded the end of the Dark Ages and made the Enlightenment possible, but it took another three centuries before any country managed to put freedom of the press beyond the reach of legislators.  So it may take a while before cryptocurrencies are free of the AML-NSA-KYC surveillance plague.
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April 21, 2013, 03:39:37 PM
 #131

How does it look today?
vs3
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April 30, 2013, 05:57:45 AM
 #132

Just curious - is this project still alive?

eldentyrell
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April 30, 2013, 07:37:02 PM
 #133

Just curious - is this project still alive?

I'm not selling them, it is simply not profitable.

I'm running quite a large number for myself.

The printing press heralded the end of the Dark Ages and made the Enlightenment possible, but it took another three centuries before any country managed to put freedom of the press beyond the reach of legislators.  So it may take a while before cryptocurrencies are free of the AML-NSA-KYC surveillance plague.
Slave2school
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May 19, 2013, 01:11:29 AM
 #134

That's a shame Sad

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July 18, 2013, 05:03:37 PM
 #135

Just curious - is this project still alive?

I'm not selling them, it is simply not profitable.

I'm running quite a large number for myself.

Such a shame indeed..  However is it possible to get a copy of the schematics and pcb files so that I can try myself?
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July 23, 2013, 02:28:46 AM
 #136

Just curious - is this project still alive?

I'm not selling them, it is simply not profitable.

I'm running quite a large number for myself.

Such a shame indeed..  However is it possible to get a copy of the schematics and pcb files so that I can try myself?

It is not worth it....... At the current hash rate and difficulty , you have about 1 month before you loose money....

Run the costings
http://www.bitcoinx.com/profit/

But.... if it is a research project you can check out my work here...
http://hardcoreforensics.com
At least at the end of it you will have a scrap board that has a significant amount of memory, PSU's and a PCI interface...

High Quality USB Hubs for Bitcoin miners
https://bitcointalk.org/index.php?topic=560003
neslekkim
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July 23, 2013, 09:22:47 PM
 #137

But.... if it is a research project you can check out my work here...
http://hardcoreforensics.com
At least at the end of it you will have a scrap board that has a significant amount of memory, PSU's and a PCI interface...

Did you ever look at the Pano Logic G2 modules? http://www.ebay.com/itm/200880792833
The G2 version have Spartan6 LX150 in them, would have been cool to do something about it, I have one, and will read your project to see if I can learn something.

Hackaday wrote about them earlier this year: http://hackaday.com/2013/01/11/ask-hackaday-we-might-have-some-fpgas-to-hack/
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