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Author Topic: ZTEX USB-FPGA Modules 1.15x and 1.15y: 215 and 860 MH/s FPGA Boards  (Read 182325 times)
ztex (OP)
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October 20, 2011, 07:19:47 PM
Last edit: June 18, 2013, 08:11:23 AM by ztex
 #1

ZTEX USB-FPGA Modules 1.15x and 1.15y: 215 MH/s and 860 MH/s FPGA Board

ZTEX USB-FPGA Modules 1.15x and 1.15y are a FPGA Board which are designed for bitcoin mining and similar applications. They have an USB interface and on-board voltage regulators. Low cost clusters can be build using standard components (USB hubs, USB cables).

USB-FPGA Modules 1.15x have a single Xilinx XC6SLX150 FPGA and USB-FPGA Modules 1.15y contain four FPGA's of the same type.

On both boards the FPGA variant in CSG484 package with small thermal conductivity (2.2 K/W) is used. For comparison, the FGG484 package used on most other FPGA board is 3.7 K/W.

Detailed descriptions can be found on the homepage of USB-FPGA Modules 1.15x  and USB-FPGA Modules 1.15y

With the current version of the BTCMiner -- the Open Source Bitcoin Miner for FPGA Boards -- these FPGA Boards achieve an average hashrate of about 215 MH/s per FPGA. The actual hash rate varies from batch to batch and from board to board. The following table contains performance measurements from the particular batches

FPGA Board  Delivery date  Speed grade  Frequncies        Average hash rate per FPGA Notes
1.15x2011-3C212 MHz to 220 MHz215MH/sEstimation based on measurements with older Bitstreams
1.15x01/2012-N3C200 MHz to 212 MHz205MH/sEstimation based on measurements with older Bitstreams
1.15x02-03/2012-N3C 208 MHz to 224 MHz (!)214MH/sLong time measurement with 20 FPGA  boards
1.15x03-06/2012-N3C 208 MHz to 220 MHz214MH/sLong time measurement with 15 FPGA  boards
1.15y04-05/2012-N3C 196 MHz to 240 MHz (!!)212MH/sLong time measurement with 6 FPGA  boards (24 FPGA's), batch contains FPGA from many different lots
1.15y05-06/2012-N3C 212 MHz to 240 MHz (!!)221MH/sLong time measurement with 3 FPGA  boards (12 FPGA's)
1.15y06-07/2012-N3C 216 MHz to 240 MHz (!!)227MH/sLong time measurement with 8 FPGA  boards (32 FPGA's)
1.15y08/2012-N3C 208 MHz to 228 MHz218MH/sLong time measurement with 10 FPGA  boards (40 FPGA's)
1.15x08-11/2012-N3C 220 MHz to 228 MHz222MH/sLong time measurement with 5 FPGA  boards
1.15y09/2012-N3C 212 MHz to 228 MHz221MH/sLong time measurement with 7 FPGA  boards (28 FPGA's)
1.15y09-10/2012-N3C 216 MHz to 232 MHz222MH/sRev. 2 boards, long time measurement with 5 FPGA  boards (20 FPGA's)
1.15y10/2012-03/2013-N3C 216 MHz to 236 MHz227MH/sRev. 2 boards, long time measurement with 5 FPGA  boards (20 FPGA's)
1.15x12/2012-03/2013-3C 224 MHz to 232 MHz227MH/sLong time measurement with 3 FPGA  boards
1.15y04/2013-N3C 220 MHz to 232 MHz224MH/sRev. 2 boards, long time measurement with 5 FPGA  boards (20 FPGA's)

If the hash rate is less than stated above the cooling / heat sink installation should be revised.

Power dissipation (without the fan) at 216MHz is typically 9.7W per FPGA. More details can be found on the BTCMiner homepage.

Ordering
Sample quantities of USB-FPGA Modules 1.15y can be ordered in the Shop. Further order details can be found on the  order info page for USB-FPGA Modules 1.15y and USB-FPGA Modules 1.15x

A license production program is offered for USB-FPGA Modules 1.15y. Details can be found on Order info page.

Suggestions for power supply
Suggestions for cluster power supplies can be found on the ZTEX Wiki

Cooling
USB-FPGA-Modules 1.15x and 1.15y are delivered with a large 40x40x35mm heat sinks with fan which make cooling easy. In order to ensure optimal heat transfer between the FPGA and the heat sink thermal grease and the push pins should be used (i.e. not the adhesive pad which is included in the cooler kit).

Due to its size the heat sink only requires a little bit airflow. In a cluster installation the 40mm fans of the heat sink can be replaced by a few large case fans. In this case the board should be densely stacked in order to optimize the airflow. (The air should be forced to flow through the heat sinks, not above or around them.)

Images


USB-FPGA Module 1.15y with coolers.


USB-FPGA Module 1.15x with cooler.

Page history
UPDATE Nov 03 2011: section "Suggestions for power supply" added

UPDATE Dec 02 2011: USD prices updated

UPDATE Dec 14 2011: Prices updated, new BTCMiner version with improved performance.

UPDATE Feb 09 2012:
UPDATE Feb 21 2012: Performance data for the new batch added

UPDATE Apr 24 2012: USB-FPGA Modules 1.15y added

UPDATE Jun 08 2012: Performance data of the last batch and BTC / MTGox USD code payment methods added.

UPDATE Jun 15 2012: USD prices updated

UPDATE Jul 05 2012: Performance data of the last batch added. Typical hash rate updated to 215 MHs per XC6SLX150.

UPDATE Jul 16 2012: USD prices updated

UPDATE Aug 09 2012: Performance data of the last batch added.

UPDATE Aug 27 2012: Performance data of the last USB-FPGA Module 1.15x batch added, price for this FPGA board updated

UPDATE Sep 07 2012: Performance data of the last USB-FPGA Module 1.15y batch added

UPDATE Oct 17 2012:
UPDATE Nov 26 2012: Prices updated

UPDATE Dec 18 2012: Performance data of the last USB-FPGA Module 1.15x batch added

UPDATE Apr 22 2013: Performance data and order information updated

UPDATE Jun 18 2013: Order information updated

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Reply with quote  #2

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October 20, 2011, 08:06:58 PM
 #2

so...at current btc prices of around $2.5 and current difficulty 190Mhs would get you around .12 BTC a day meaning it would only take 4.2 years to pay this off? lol or did i mess up a decimal place somewhere?

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October 20, 2011, 08:23:47 PM
Last edit: October 20, 2011, 10:04:35 PM by 322i0n
 #3

so...at current btc prices of around $2.5 and current difficulty 190Mhs would get you around .12 BTC a day meaning it would only take 4.2 years to pay this off? lol or did i mess up a decimal place somewhere?
this is assuming that both the difficulty and exchange rate stay the same for those 4.2 years.

edit:fixed typos

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ztex (OP)
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October 20, 2011, 08:40:39 PM
 #4

so...at current btc prices of around $2.5 and current difficulty 190Mhs would get you around .12 BTC a day meaning it would only take 4.2 years to pay this off? lol or did i mess up a decimal place somewhere?

Indeed, you messed up the volume prices.  If you search for a board assembler and build a 50 GH/s rig it pays off in about 2 years if the $/H rate stays approximately constant (e.g. due to the fact the GPU miners have switch off their rigs)

You also did not consider the energy costs: FPGA miners are still profitable in many years.


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October 20, 2011, 09:09:21 PM
Last edit: October 20, 2011, 09:54:32 PM by allten
 #5

Ztex. Very nice work. Thank you for sharing.

I'm kind of shocked on the "warm reception" you received.

There are many enthusiasts out there that I'm sure would buy one of your boards.
I'm one of them.

Just curious, is your design open source or is this a for profit venture?
Fine if it is, but just wondering.
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October 20, 2011, 10:15:06 PM
 #6

Just curious, is your design open source or is this a for profit venture?

Hardware is for profit. Software is both, Open Source and for making profit with hardware.

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October 20, 2011, 10:21:11 PM
 #7

Just curious, is your design open source or is this a for profit venture?

Hardware is for profit. Software is both, Open Source and for making profit with hardware.



Would you consider a discount to those that wanted to put it together themselves?

You could offer a few options:
        1)Just the Board
        2)Just the Board + components
        3)Completed Board (already offered)

Thanks
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October 20, 2011, 11:58:50 PM
 #8

You could offer a few options:
        1)Just the Board
        2)Just the Board + components
        3)Completed Board (already offered)

1) is equal to the license production program I offered: You would purchase the empty PCB (including a license fee). But I do not recomment to solder the BGA's in a toaster or so. (I read that somewhere here in the forum.)

I also can offer license production for smaller amounts. But IMHO it's not very reasonable: the money you save have to be spent for more expensive parts and higher assembly costs (smaller amounts are more expensive)

2) Would not be much cheaper than 3) since assembly is not that expensive. I cant imagine the someone would be interested in this.




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October 21, 2011, 09:14:51 AM
 #9

Looks like your not the only one..... not out QUITE yet but 250 m/hash

https://bitcointalk.org/index.php?topic=7216.msg584655#msg584655
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October 21, 2011, 09:18:22 AM
 #10

so... no way to buy these using BTC?
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October 21, 2011, 11:04:19 AM
 #11

Looks like your not the only one..... not out QUITE yet but 250 m/hash

https://bitcointalk.org/index.php?topic=7216.msg584655#msg584655

This board is more expensive (two FPGA's) and less efficient.

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October 21, 2011, 11:05:26 AM
 #12

so... no way to buy these using BTC?

BTC payment is possible on request.

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October 21, 2011, 11:30:31 AM
 #13

Looks like your not the only one..... not out QUITE yet but 250 m/hash

https://bitcointalk.org/index.php?topic=7216.msg584655#msg584655

This board is more expensive (two FPGA's) and less efficient.


THey quote 200 (first post https://bitcointalk.org/index.php?topic=40058.0) and get 250 on first test, with less than optimal software etc. So im guessing there single does about 150+ for $390($2.60 m/hash), yours is 190 @ $460($2.50 m/hash) and there duel is 250 @ $580($2.35 m/hash). If you ask me, your hitting about the same ball park, give or take. So i cant see the more expense in all honesty. Not that im having a go or anything. Complete opposite, its good to have 2 rival's but your price point is invalid im afraid as you can see, the Duel one works out cheaper per m/hash, Even power usuage is in the same area Smiley

I think theres alot more to come from FPGA's and may even become viable in the future but for now there costs are just too much. I mean i pay around £800-£900 to get 1600 m/hash. Yes, power is alot more but it would take YEARS to see anything coming back in. All depends on the BTC market weather it pans out ok for these or not though. I so want to play with one Smiley
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October 21, 2011, 12:04:40 PM
 #14

yours is 190 @ $460($2.50 m/hash) and there duel is 250 @ $580($2.35 m/hash).

There are volume discounts, see the initial post. If you order 5, the price is $430 or $2.26 per MH/s, the 25 units price is $1.94 per MH/s. If you search for an assembler and build an 50 GH/s rig, the price is about $1.02 per MH/s.

Quote
Even power usuage is in the same area Smiley

17W @ 250 MH/s: 14.7 MH/s per W
8.5W @ 190 MH/s: 22.3 MH/s per W

Thea is a difference of 50%.


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October 21, 2011, 12:35:56 PM
 #15

yours is 190 @ $460($2.50 m/hash) and there duel is 250 @ $580($2.35 m/hash).

There are volume discounts, see the initial post. If you order 5, the price is $430 or $2.26 per MH/s, the 25 units price is $1.94 per MH/s. If you search for an assembler and build an 50 GH/s rig, the price is about $1.02 per MH/s.

Quote
Even power usuage is in the same area Smiley

17W @ 250 MH/s: 14.7 MH/s per W
8.5W @ 190 MH/s: 22.3 MH/s per W

Thea is a difference of 50%.



ah yes, so it is Smiley The duel is less efficent but when you talking 50% on the amount of watts were talking its neither here nor there compared to other options (VGA etc). Great little devices all the same Smiley
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October 21, 2011, 03:20:18 PM
 #16

so... no way to buy these using BTC?

+1.  OP should make this an option.   
Support the community you are trying to profit from  (don't get me wrong profits = good) just support the community.

I would buy one w/ BTC next month.
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October 21, 2011, 03:42:10 PM
 #17

so... no way to buy these using BTC?

+1.  OP should make this an option.   
Support the community you are trying to profit from  (don't get me wrong profits = good) just support the community.

I would buy one w/ BTC next month.

As I wrote above, BTC orders are possible on request. Please use the contact form of the shop: http://shop.ztex.de

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October 21, 2011, 05:59:14 PM
 #18

so... no way to buy these using BTC?

+1.  OP should make this an option.   
Support the community you are trying to profit from  (don't get me wrong profits = good) just support the community.

I would buy one w/ BTC next month.

As I wrote above, BTC orders are possible on request. Please use the contact form of the shop: http://shop.ztex.de

"BTC orders are possible on request"

And the community is requesting that you don't have to request.

I also want to purchase in Bitcoin, it's the only way to go.
Btw, do have a donation address? I would like to donate to your work.
I don't think I'm ready to buy one yet because it is not quite where it could be for it to be a competitive miner.

When you have an adapter where you can stack multiple FPGAs on top (or next to) of each other using the same communication board - then I'm ready to buy more than one.

Thanks



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October 21, 2011, 06:03:58 PM
 #19

When you have an adapter where you can stack multiple FPGAs on top (or next to) of each other using the same communication board - then I'm ready to buy more than one.

I don't think you need any adapter however you can't just stack FPGA you can only stack boards.

The board has 4 screw cut outs.  Using standoffs (like what you mount motherboard with but longer) longer than the heatsink you could build a "tower" of these.  Might be better to turn them on their sides though and use a different heat sink which blows air across the heatsink not "up".

If what you were talking about is a board that had like 4 sockets that you could buy & plug in multiple FPGA that is interesting idea however that makes the cost of 1 FPGA higher (due to unused overhead) which likely means you need much bigger market to support that. 
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October 21, 2011, 06:12:54 PM
 #20

Do you need a special type of USB port?  You say it uses 8.5w, and a USB port provides 500mA @ 5v = 2.5w.  While some USB ports can provide more amperage than that, the standard only requires 500mA...
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