Bitcoin Forum
December 06, 2016, 02:28:10 PM *
News: To be able to use the next phase of the beta forum software, please ensure that your email address is correct/functional.
 
   Home   Help Search Donate Login Register  
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 [25] 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 »
  Print  
Author Topic: ZTEX USB-FPGA Modules 1.15x and 1.15y: 215 and 860 MH/s FPGA Boards  (Read 174124 times)
Syke
Legendary
*
Offline Offline

Activity: 2086


View Profile
April 16, 2012, 07:56:50 PM
 #481

Typical performance should be 850 MH/s. (The prototype achieves 870 MH/s.)

Prices are:
1..4 units: 999 EUR (1355 USD)

It's great to see a quad board, but...

850 MH/s @ $5 per btc = $82/month (ignoring power costs).

$1355/82 = 16.5 months to break even...

but it gets worse, in 8 months the btc reward will drop in half. Unless the price of bitcoins doubles when the reward drops, this product will need roughly 2 full years to break even, even without taking into consideration power costs.

Buy & Hold
1481034490
Hero Member
*
Offline Offline

Posts: 1481034490

View Profile Personal Message (Offline)

Ignore
1481034490
Reply with quote  #2

1481034490
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
ztex
Donator
Sr. Member
*
Offline Offline

Activity: 367

ZTEX FPGA Boards


View Profile WWW
April 17, 2012, 08:58:23 AM
 #482

One question - how much does shipping in the EU cost for these quad boards? Also, is VAT included in the prices you quoted?

See there for payment and shipping methods: http://shop.ztex.de/shipping.php. Prices are without VAT (which has to be paid by private customers from EU without VATIN)

spiccioli
Legendary
*
Offline Offline

Activity: 1376

nec sine labore


View Profile
April 17, 2012, 10:01:16 AM
 #483

One question - how much does shipping in the EU cost for these quad boards? Also, is VAT included in the prices you quoted?

See there for payment and shipping methods: http://shop.ztex.de/shipping.php. Prices are without VAT (which has to be paid by private customers from EU without VATIN)

ztex,

I'm not a fiscal consultant, but european companies, for what I know, have to pay VAT as well when they receive goods from another european state.

Your invoice will not have VAT in it, but receiving company has to pay it, using its national VAT fee.

There are some exceptions, at least in Italy, like a company which imports goods to transform into different ones and/or puts them into a customs deposit while it waits to resell them.


spiccioli.
ztex
Donator
Sr. Member
*
Offline Offline

Activity: 367

ZTEX FPGA Boards


View Profile WWW
April 17, 2012, 12:14:40 PM
 #484

One question - how much does shipping in the EU cost for these quad boards? Also, is VAT included in the prices you quoted?

See there for payment and shipping methods: http://shop.ztex.de/shipping.php. Prices are without VAT (which has to be paid by private customers from EU without VATIN)

I'm not a fiscal consultant, but european companies, for what I know, have to pay VAT as well when they receive goods from another european state.

Would mean: As more companies are involved in a product as more expensive a product would be because every company would have to pay VAT.

VAT is a consumption tax. In general (there may be exceptions) companies get it returned or do not have to pay it. (Even if they consume the good, e.g. if I purchase a pencil I get the VAT refunded (if I purchase in Germany) or I do not have to pay VAT (If I order from outside Germany and within EU).


spiccioli
Legendary
*
Offline Offline

Activity: 1376

nec sine labore


View Profile
April 17, 2012, 02:00:07 PM
 #485

One question - how much does shipping in the EU cost for these quad boards? Also, is VAT included in the prices you quoted?

See there for payment and shipping methods: http://shop.ztex.de/shipping.php. Prices are without VAT (which has to be paid by private customers from EU without VATIN)

I'm not a fiscal consultant, but european companies, for what I know, have to pay VAT as well when they receive goods from another european state.

Would mean: As more companies are involved in a product as more expensive a product would be because every company would have to pay VAT.

VAT is a consumption tax. In general (there may be exceptions) companies get it returned or do not have to pay it. (Even if they consume the good, e.g. if I purchase a pencil I get the VAT refunded (if I purchase in Germany) or I do not have to pay VAT (If I order from outside Germany and within EU).

ztex,

if a company, here in Italy, buys something and this something is related to its core business, VAT gets returned, and the value of the goods reduces its earnings with a ratio of one fifth of the goods' price each year (there are exceptions and longer/shorter durations).

If a company, on the other hand, buys something which is not related to its core business (I don't think there are companies with crypto-currencies as core business; they could be considered hardware/computers, but if this company buys too much of them can get into troubles during a fiscal control) it pays VAT in the same way as a final consumer.

So, for example, I could buy your boards with my company VATIN, but as soon as they reach Italy I'd have to pay Italian VAT on them and I cannot ask this VAT back since they are not related to my company business (which is not even computers).

spiccioli.
norulezapply
Sr. Member
****
Offline Offline

Activity: 475


View Profile
April 17, 2012, 05:11:41 PM
 #486

Any estimates on a release date when I'll be able to order a quad FPGA board?

If my post helped, I'll happily accept a few bitmills!   15rGg6A1JFZV3b7TTbtpAaiYGdUD1e1oAm
BR0KK
Hero Member
*****
Offline Offline

Activity: 742



View Profile
April 17, 2012, 10:01:13 PM
 #487

Ztex told me via mail that it should be in the Shop by next week Smiley

ztex
Donator
Sr. Member
*
Offline Offline

Activity: 367

ZTEX FPGA Boards


View Profile WWW
April 18, 2012, 01:19:09 PM
 #488

New software release (number 120417) has been released on the BTCMiner Homepage.

A list of new Features and a few hints can be found in the Software thread: https://bitcointalk.org/index.php?topic=40047.msg856930#msg856930

aTg
Legendary
*
Offline Offline

Activity: 1302



View Profile
April 18, 2012, 02:18:58 PM
 #489

With the new version of firmware and a small incorporation of a heatsink reaches back beyond the 211.8 MH / s







I have taken the previous temperature and with the current firmware, the FPGA may be hot in different areas with the firmware change?
SamHa1n
Member
**
Offline Offline

Activity: 67


View Profile
April 18, 2012, 02:27:28 PM
 #490

Has <serial number string> size been increased? Noticed the addition of -1 to the end of device listing.
norulezapply
Sr. Member
****
Offline Offline

Activity: 475


View Profile
April 18, 2012, 05:12:47 PM
 #491

Anyone know what power adapters will be compatible with the new Quad boards?

I don't really want to spend like £30 on a power supply.

If my post helped, I'll happily accept a few bitmills!   15rGg6A1JFZV3b7TTbtpAaiYGdUD1e1oAm
Inspector 2211
Sr. Member
****
Offline Offline

Activity: 383



View Profile
April 18, 2012, 06:30:08 PM
 #492

Anyone know what power adapters will be compatible with the new Quad boards?

I don't really want to spend like £30 on a power supply.

Any regulated 12V DC supply that supplies at least 3.5 Amps.
Some old netbooks have exactly such a power supply.
Or take an old PC power supply.
ztex
Donator
Sr. Member
*
Offline Offline

Activity: 367

ZTEX FPGA Boards


View Profile WWW
April 19, 2012, 12:09:50 PM
 #493

With the new version of firmware and a small incorporation of a heatsink reaches back beyond the 211.8 MH / s
[...]
I have taken the previous temperature and with the current firmware, the FPGA may be hot in different areas with the firmware change?

The only diference between the new bitstreams (ztex_ufm1_15d4.bit and ztex_ufm1_15y1.bit) and the old one (ztex_ufm1_15d3.bit) are some changes in the glue logic. Routing and placement of the hashing pipelines is the same. This does not influence the heat generation and it is almost impossible that this influences the speed.


ztex
Donator
Sr. Member
*
Offline Offline

Activity: 367

ZTEX FPGA Boards


View Profile WWW
April 19, 2012, 12:10:46 PM
 #494

Has <serial number string> size been increased? Noticed the addition of -1 to the end of device listing.

"-<n>" denotes the number of the FPGA.

ztex
Donator
Sr. Member
*
Offline Offline

Activity: 367

ZTEX FPGA Boards


View Profile WWW
April 19, 2012, 12:13:45 PM
 #495

Anyone know what power adapters will be compatible with the new Quad boards?

I don't really want to spend like £30 on a power supply.

See there and there http://www.ztex.de/usb-fpga-1/usb-fpga-1.15y.e.html#con2
and there http://wiki.ztex.de/doku.php?id=en:ztex_boards:ztex_fpga_boards:cluster_power_supplies&#usb-fpga_modules_115ysmall_clusters (just updated)

aTg
Legendary
*
Offline Offline

Activity: 1302



View Profile
April 19, 2012, 07:57:43 PM
 #496

With the new version of firmware and a small incorporation of a heatsink reaches back beyond the 211.8 MH / s
[...]
I have taken the previous temperature and with the current firmware, the FPGA may be hot in different areas with the firmware change?

The only diference between the new bitstreams (ztex_ufm1_15d4.bit and ztex_ufm1_15y1.bit) and the old one (ztex_ufm1_15d3.bit) are some changes in the glue logic. Routing and placement of the hashing pipelines is the same. This does not influence the heat generation and it is almost impossible that this influences the speed.



The speed increase to 211.8 MH / s is because the previous version 210MHZ to 216MHz jumping and having a high error rate was returning to 210MHz. Now 208MHz to 212MHz passes and with a little extra cooling support this so often gets almost 212MH / s.
Prove also put the circuit inside the fridge and came up to 216MHz without problems.



roomservice
Full Member
***
Offline Offline

Activity: 190



View Profile
April 19, 2012, 08:08:58 PM
 #497

With the new version of firmware and a small incorporation of a heatsink reaches back beyond the 211.8 MH / s
[...]
I have taken the previous temperature and with the current firmware, the FPGA may be hot in different areas with the firmware change?

The only diference between the new bitstreams (ztex_ufm1_15d4.bit and ztex_ufm1_15y1.bit) and the old one (ztex_ufm1_15d3.bit) are some changes in the glue logic. Routing and placement of the hashing pipelines is the same. This does not influence the heat generation and it is almost impossible that this influences the speed.



The speed increase to 211.8 MH / s is because the previous version 210MHZ to 216MHz jumping and having a high error rate was returning to 210MHz. Now 208MHz to 212MHz passes and with a little extra cooling support this so often gets almost 212MH / s.
Prove also put the circuit inside the fridge and came up to 216MHz without problems.





GREAT!!! Can't wait for test result when you put the ztex board into the freezer!

"Tonight's the night. And it's going to happen again, and again. It has to happen. Nice night."
SamHa1n
Member
**
Offline Offline

Activity: 67


View Profile
April 19, 2012, 08:20:37 PM
 #498

if you collect enough condensation points, you get to bonus round.
bulanula
Hero Member
*****
Offline Offline

Activity: 518



View Profile
April 19, 2012, 10:05:46 PM
 #499

if you collect enough condensation points, you get to bonus round.

Forget condensation, I would be worried about food poisoning and food going bad because the cables cause a leak in the air vacuum in his fridge ...
vv01f
Sr. Member
****
Offline Offline

Activity: 314


View Profile
April 20, 2012, 04:53:58 AM
 #500

although I'd assume the foot to store elsewhere, the board is a bit more costly than some cheese and butter - maybe you store caviar in your fridge, I don't.  Grin

I'd be more interested in good and very quiet cooling-solutions as these compact and easy to cool boards (compared to GPUs) could also be mounted in usual living-/work- and bedrooms. How much sound do you have with the standard-cooler, e.g. is it less than the fridge?

donations to me please send via bitcoin 1vvo1FDwSAwNdLVA1mFkM7v76XPZAAUfb
a good European exchange: bitcoin.de (ref-link)
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 [25] 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 »
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!