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Question: would you be interested in an next generation ASIC trade up program for your ModMiner Quad?
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Author Topic: High Efficiency FPGA & ASIC Bitcoin Mining Devices https://BTCFPGA.com  (Read 200853 times)
cablepair
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May 04, 2012, 11:47:40 PM
 #1

http://www.BTCFPGA.com

Welcome to BTCFPGA

ModMiner Quad rev0.4




The ModMiner Quad is a highly efficient FPGA Based Bitcoin Mining Device.

Which can be purchased from http://www.btcfpga.com

We accept Bitcoin, Dwolla, and any major credit/debit card

It features up to 4 Spartan-6 LX150 FPGA Chips that are Capable of doing 210Mhash each at 10 watts

For a total Unit Speed & Efficiency of 840mhash @ only 40 watts

Compatible with Bitcoin Mining Software BFGMiner and Modular Python Bitcoin Miner (MPBM)

Windows, Linux, Mac OS, or Raspberry PI

Fast Shipping Time compared to competitors normal delivery takes place in 2-4 weeks

ASIC Trade-up Program coming soon!

Features:

    
  • 4x Spartan 6's 800+mhash @ ~ 40 watts
  • USB interface for configuration and communication
  • 72MHz ARM Cortex M3 for USB interface
  • Our own custom Firmware
  • Super easy Firmware updating for the ARM chip
  • Temp sensor on each FPGA card
  • Heatsink w/ cooling fan on every card
  • 4x 3-pin headers to power standard fans
  • Draws from the 12V supply with 5A fuse at the Molex connector
  • LEDs to indicate that the FPGAs are configured properly
  • Modular design for seamless FPGA upgrades and repair

Wiki Pages:

ModMiner Quad Rev.04 - the unit we are currently shipping:














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Gomeler
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May 04, 2012, 11:58:07 PM
 #2

You guys have any plans on making another backplane supporting more FPGAs? I like using those connectors for the FPGA boards and having the backplane power the FPGAs remotely.

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May 05, 2012, 12:02:09 AM
 #3

So when is the 8x version coming out that uses a PCI-E 6 for the power plug.

Edit: actually, since this is all modular, why not a 16x that uses a PCI-E 8, it would really reduce wiring overhead and other bullshit.

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May 05, 2012, 12:20:48 AM
 #4

Power distribution on such a board isn't exactly trivial. But one should probably be able to just clone the board and connect the power input to all clones in parallel, keeping one set of voltage regulators per four FPGAs.
Oh, and one would probably need a more beefy controller for that, to control 16 FPGAs over a single USB port.

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May 05, 2012, 12:57:26 AM
 #5

You guys have any plans on making another backplane supporting more FPGAs? I like using those connectors for the FPGA boards and having the backplane power the FPGAs remotely.

There are plans on making larger backplanes. We also plan on making the FPGA cards compatible to use on all of our backplane models. As TheSeven stated power distribution on such a board isn't exactly trivial and a lot beefier microcontroller would be needed so you probably wont see a 16x backplane for awhile. You may see a 8x board by June or July though.

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May 05, 2012, 10:51:16 PM
 #6

Dang, there' sjust something about this design that speaks to me. It's so simple, yet elegant. Bravo.

Would you post some more pics, without the heatsinks on and such?

What is the potential for an overclock if one were to use liquid cooling?

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simon66
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May 05, 2012, 11:24:37 PM
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You guys should add more pics. Higher quality that is. Thanks

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May 07, 2012, 06:06:10 AM
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Great to see another solution with an upgradable power supply (i.e. not soldered to the same board as the expensive FPGA).  You'll be glad you did this.

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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May 07, 2012, 06:53:49 AM
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I believe this is the first truly modular system that has been brought to market.  I am glad to see it and look forward to the 8x backplate.  Well done.

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May 07, 2012, 09:57:52 PM
 #10

I believe this is the first truly modular system that has been brought to market

... other than https://bitcointalk.org/index.php?topic=45532

Glad to see it catching on!




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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May 07, 2012, 10:04:01 PM
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Is there no way to match BFL's 800Mhash @ $600 ?
tgmarks
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May 07, 2012, 10:05:30 PM
 #12

I believe this is the first truly modular system that has been brought to market

... other than https://bitcointalk.org/index.php?topic=45532

Glad to see it catching on!




I didn't think you had a packaged set you were selling that was completely assembled.

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May 07, 2012, 10:36:19 PM
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Watching with interest.
TheSeven
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May 07, 2012, 10:49:12 PM
 #14

Is there no way to match BFL's 800Mhash @ $600 ?

BFL seems to have a secret and very cheap source of usually highly expensive chips. The chips that they use usually cost $2000-4000 each (and each single contains two of them).

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May 07, 2012, 11:10:03 PM
 #15

Is there no way to match BFL's 800Mhash @ $600 ?

BFL seems to have a secret and very cheap source of usually highly expensive chips. The chips that they use usually cost $2000-4000 each (and each single contains two of them).

https://bitcointalk.org/index.php?topic=79825.0

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stcupp
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May 07, 2012, 11:20:27 PM
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Is there no way to match BFL's 800Mhash @ $600 ?

Not with Spartan 6....

i also check the price of this chip.
on digikey, it's about 2000-3000USD,
http://www.digikey.cn/product-search/zh/integrated-circuits-ics/embedded-fpgas-field-programmable-gate-array/2556262?k=EP3SL150

but this old chip is about 200-300USD in China market for a new one, and about 50-60 USD for a used one. i discussed with my supplier about the strange price, they said because nearly no one use this stuff, so the price is like a " markdown sale", so there are no large quantity of this chip in the market, maybe only a few hundreds (both new and used one).

Wonder if they're giving people new chips or used? I don't suppose they would tell us.

Lethos
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May 08, 2012, 07:59:14 AM
 #17

Really loving the modular design, looks good.
Makes I'm sure a lot of people feel at ease if a part needs to be replaced it doesn't mean getting the soldering gun out and potentially messing up it more  Shocked

So these really run cool enough and efficient with no fan?
Sorry if it sounds like a newbie question, but I don't often see FPGA without them.

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FPGA: 2x Quad XC6SLX150 Boards
stcupp
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May 08, 2012, 06:11:45 PM
 #18

Really loving the modular design, looks good.
Makes I'm sure a lot of people feel at ease if a part needs to be replaced it doesn't mean getting the soldering gun out and potentially messing up it more  Shocked

So these really run cool enough and efficient with no fan?
Sorry if it sounds like a newbie question, but I don't often see FPGA without them.


It's not a newbie question =] The pictures are a bit misleading....

The board in the pics is one of our prototype boards(REV 2).
The boards that will be shipped are REV4 and have a lot of improvements. I've added 2 more fan headers for a total of 4. The FPGA cards are a bit bigger and will have holes at 54.8mm distance to allow for most aftermarket North bridge coolers and most aftermarket GPU coolers made for older GPU's. The FPGA cards will come stock with a GPU cooler that should dissipate around 25 watts of heat this is a lil overkill considering we only need to dissipate around 10 watts but everyones FPGAs will stay good and cool =] each GPU cooler includes a cylindrical heatsink and a 40-50mm fan. Heres a example http://www.newegg.com/Product/Product.aspx?Item=N82E16835119079

Another difference between the old REV2 and REV4 is the USB Interface chip. In REV2 we used the same one as the X6500 uses. In REV4 we've changed this to a ARM Cortex M3 72 MHz microcontroller that will allow firmware updating for the USB interface.

I will post some new pictures in a few days.... I've just been really busy getting orders together and sourcing parts.

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May 08, 2012, 06:17:07 PM
 #19

How many watts will the new boards with fans use?

stcupp
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May 08, 2012, 09:48:33 PM
 #20

How many watts will the new boards with fans use?

Each fan should add around 0.6 - 1.2 watt depending on what heatsink/fan combination we decide on using

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