High Efficiency FPGA & ASIC Bitcoin Mining Devices https://BTCFPGA.com - page 105.

Lethos

sr. member

Activity: 476

Merit: 250

Keep it Simple. Every Bit Matters.

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.

stcupp

full member

Activity: 209

Merit: 100

Quote from: ice_chill on May 07, 2012, 05:04:01 PM

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

Not with Spartan 6....

Quote from: ngzhang on May 06, 2012, 07:23:27 AM

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.

TheHarbinger

sr. member

Activity: 378

Merit: 250

Why is it so damn hot in here?

Quote from: TheSeven on May 07, 2012, 05:49:12 PM

Quote from: ice_chill on May 07, 2012, 05:04:01 PM

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://bitcointalksearch.org/topic/ok-i-confirmed-the-model-of-fpga-they-are-using-in-bfl-single-79825

TheSeven

hero member

Activity: 504

Merit: 500

FPGA Mining LLC

Quote from: ice_chill on May 07, 2012, 05:04:01 PM

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).

PatrickHarnett

hero member

Activity: 518

Merit: 500

Watching with interest.

tgmarks

donator

Activity: 490

Merit: 500

Quote from: eldentyrell on May 07, 2012, 04:57:52 PM

Quote from: tgmarks on May 07, 2012, 01:53:49 AM

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

... other than https://bitcointalksearch.org/topic/minimalist-spartan6-lx150-board-45532

Glad to see it catching on!

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

ice_chill

sr. member

Activity: 336

Merit: 250

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

eldentyrell

donator

Activity: 980

Merit: 1004

felonious vagrancy, personified

Quote from: tgmarks on May 07, 2012, 01:53:49 AM

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

... other than https://bitcointalksearch.org/topic/minimalist-spartan6-lx150-board-45532

Glad to see it catching on!

tgmarks

donator

Activity: 490

Merit: 500

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.

eldentyrell

donator

Activity: 980

Merit: 1004

felonious vagrancy, personified

Quote from: cablepair on May 04, 2012, 06:47:40 PM

http://www.BTCFPGA.com

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.

simon66

sr. member

Activity: 423

Merit: 250

You guys should add more pics. Higher quality that is. Thanks

1l1l11ll1l

legendary

Activity: 1274

Merit: 1000

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?

stcupp

full member

Activity: 209

Merit: 100

Quote from: Gomeler on May 04, 2012, 06:58:07 PM

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.

TheSeven

hero member

Activity: 504

Merit: 500

FPGA Mining LLC

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.

DiabloD3

legendary

Activity: 1162

Merit: 1000

DiabloMiner author

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.

Gomeler

hero member

Activity: 697

Merit: 500

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.

cablepair

hero member

Activity: 896

Merit: 1000

Buy this account on March-2019. New Owner here!!

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:

Topic: High Efficiency FPGA & ASIC Bitcoin Mining Devices https://BTCFPGA.com - page 105. (Read 218469 times)