Dave -
An update from Punin said that the H-boards and M-boards are in production/assembly...
https://bitcointalksearch.org/topic/m.2796196
Am I right in assuming that US orders are also among those in production (i.e. not just for the 100TH mine and the European webstore)?
Topic: [ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 226. (Read 576785 times)
July 25, 2013, 09:19:59 AM
July 24, 2013, 08:15:02 PM
And if I was interested in buying a number of the c-scape boards ??
You would be one of many.
haha yeah for sure!
No plans yet, just having fun. I will not be doing any manufacturing or retail selling myself, but I'm open for collaborations with other companies.
July 24, 2013, 08:13:01 PM
It would take a little more than a resistor to OC the H-boards. The main issue is the regulator (30A), which would have to be upgraded to a 50A. The input resistor would then also need to be changed. Making the whole rig work from there could require a lot of work - we don't know at this time.
Please don't take any of my info as any kind of support for overclocking our boards. We can't help you achieve it, nor can we provide any kind of warranty coverage if you attempt to OC them. We also don't know yet what the longevity of the BitFury chip is at different clock voltages.
This *is* pretty frigging awesome though - nice job C-Scape!
Please don't take any of my info as any kind of support for overclocking our boards. We can't help you achieve it, nor can we provide any kind of warranty coverage if you attempt to OC them. We also don't know yet what the longevity of the BitFury chip is at different clock voltages.
This *is* pretty frigging awesome though - nice job C-Scape!
July 24, 2013, 08:06:32 PM
And if I was interested in buying a number of the c-scape boards ??
You would be one of many.
July 24, 2013, 07:46:43 PM
And if I was interested in buying a number of the c-scape boards ??
July 24, 2013, 04:15:15 PM
Does this mean the 400GH/s kit can made to easily go up to 640GH/s? What's required to do this? Changing some resistors and crystals?
They will do about 614 GH/s. Please see:
At 0.8 V and clock of 54, these chips get 2.4 GH/s each. 16 H boards x 16 chips per H board x 2.4 GH/s per chip = 614.4 GH/s.
These are not the same boards.
No, but Dave has stated in this thread that the H board's voltage reg maxes out at 0.8 V, which is the apparent stock voltage. So, all one needs to do is adjust the clock.
edit:
Apparently H board v reg maxes out at 30 A and stock voltage is 0.65 V, so you will need to modify the resistor to get voltage up beyond that
This post seems to specify that achieving this performance on an H board will be difficult without extensive modification to replace both the resistor and the v reg
cscape, a few of us are wondering how much the h-card can be overclocked to. Have you tested that? We know that it is limited to the regulator.
30A reg maxout is on the board. 40A max at core limit.There is no reg subtitute with higer limits (as I know, I already tried to find). To maximaze the chips hashrate we might need board with less chips.
dave and cscape qutoes;
For 0.65V you need exactly 1K resistor for R01F.
For 0.70V you need 1.5K.
With 1K resistor I get 1.26Amps @ 12.0 V, so 15Watts for an h-board.
[edit] Remember, with 16 chips, soldering that higher value resistor will quickly max out the amps that the regulator can handle.
The 2.7GH/sec result I got with a single ASIC test board required 2.5A, and 0.835V. If you were to attempt that on the whole board, the total current of 40A would exceed the capabilities of the regulator.
--------
btw great work cscape, awesome!
Picture is kind of look but can not touch
Come on investors, grab this oportunity!
July 24, 2013, 04:11:57 PM
Does this mean the 400GH/s kit can made to easily go up to 640GH/s? What's required to do this? Changing some resistors and crystals?
They will do about 614 GH/s. Please see:
At 0.8 V and clock of 54, these chips get 2.4 GH/s each. 16 H boards x 16 chips per H board x 2.4 GH/s per chip = 614.4 GH/s.
These are not the same boards.
July 24, 2013, 04:09:18 PM
Does this mean the 400GH/s kit can made to easily go up to 640GH/s? What's required to do this? Changing some resistors and crystals?
They will do about 614 GH/s. Please see: https://bitcentury.io/blog/initial-testing-of-bitfury-asic
At 0.8 V and clock of 54, these chips get 2.4 GH/s each. 16 H boards x 16 chips per H board x 2.4 GH/s per chip = 614.4 GH/s.
Note that this is 614.4 GH/s at stock voltage. The H boards as sold here appear to be 0.8 v running at a clock of 48 for 1.5 GH/s per chip, or 24 GH/s per H board. So the 50% increase in hash power should be easily achievable.
July 24, 2013, 04:08:38 PM
Is there any chance of retrofitting current H model boards for a little overclocking? I have no fear of a solder iron. 
The voltage regulator on the H-CARD has a 30A capacity, which limits the overclocking range, and there are no simple replacements for the regulator. This is what cscape said about overclocking the Hcard.
July 24, 2013, 04:04:08 PM
Hboard need to change one of resistor I think to 1.9k and go back of post by Dave for OC.
July 24, 2013, 04:02:48 PM
First prototype of Bitfury S-HASH board is hashing:
Features:
If you don't have the budget for a large number of chips, overclocking is the best option, as it will get you 40GH/sec out of a card (probably more with better cooling), instead of 25GH for a standard H-CARD for the same 16 chips. At 40GH/sec, the card uses about 35 Watts, running off a standard 12V DC supply.
Features:
- 16 Bitfury ASIC capacity
- Adjustable (through 0805 SMT resistor) voltage regulator between 0.7 and 0.9V
- Core voltage regulator has 50A capacity, so chips can be overclocked.
- On-board ARM Cortex M3 processor with standard RJ-45 100 Mbps Ethernet port.
- Built-in mining software can operate stand-alone. No PC or Raspberry PI needed, just an internet connection.
- TCP/IP stack with DHCP and DNS support. Just fill in pool server name, port number, username and password.
- Support for Stratum and backup mining pools.
- Built-in small webserver for chip status/speed reports.
- PCB temperature sensor, could be used for automatic shutdown when temperature gets too high.
If you don't have the budget for a large number of chips, overclocking is the best option, as it will get you 40GH/sec out of a card (probably more with better cooling), instead of 25GH for a standard H-CARD for the same 16 chips. At 40GH/sec, the card uses about 35 Watts, running off a standard 12V DC supply.
40GH/s with only PC fans blowing onto the chips and no heat sink! Wow!
To avoid confusion, please note this image and the specs do NOT refer to the same Bitfury 55nm ASIC H-Board being sold by megabigpower. This is a modified prototype board, with very different features from the H-Boards we've been discussing so far on this thread. In particular, this kit is a self-contained miner, not requiring a master board to plug into, and has different components which allow the overclocking (which will not be possible with the current H-Board out of the box AFAIK).
July 24, 2013, 03:55:04 PM
Does this mean the 400GH/s kit can made to easily go up to 640GH/s? What's required to do this? Changing some resistors and crystals?
July 24, 2013, 03:40:03 PM
Will someone please make these for us less technical schmucks.
July 24, 2013, 03:22:43 PM
This is looking more and more fun by the minute. Can't wait until these goodies arrive in my hand. 
July 24, 2013, 02:56:26 PM
First prototype of Bitfury S-HASH board is hashing:
Features:
If you don't have the budget for a large number of chips, overclocking is the best option, as it will get you 40GH/sec out of a card (probably more with better cooling), instead of 25GH for a standard H-CARD for the same 16 chips. At 40GH/sec, the card uses about 35 Watts, running off a standard 12V DC supply.
Features:
- 16 Bitfury ASIC capacity
- Adjustable (through 0805 SMT resistor) voltage regulator between 0.7 and 0.9V
- Core voltage regulator has 50A capacity, so chips can be overclocked.
- On-board ARM Cortex M3 processor with standard RJ-45 100 Mbps Ethernet port.
- Built-in mining software can operate stand-alone. No PC or Raspberry PI needed, just an internet connection.
- TCP/IP stack with DHCP and DNS support. Just fill in pool server name, port number, username and password.
- Support for Stratum and backup mining pools.
- Built-in small webserver for chip status/speed reports.
- PCB temperature sensor, could be used for automatic shutdown when temperature gets too high.
If you don't have the budget for a large number of chips, overclocking is the best option, as it will get you 40GH/sec out of a card (probably more with better cooling), instead of 25GH for a standard H-CARD for the same 16 chips. At 40GH/sec, the card uses about 35 Watts, running off a standard 12V DC supply.
40GH/s with only PC fans blowing onto the chips and no heat sink! Wow!
July 24, 2013, 12:42:33 PM
happy bday, dave.
July 24, 2013, 12:16:03 PM
For those of you planning heatsinks, Intron provides a good reference.
http://imgur.com/gUMVK0b
PS: You are looking thru the board from the top side.
Don't make the 'mirror error' too often made:) --Intron
http://imgur.com/gUMVK0b
PS: You are looking thru the board from the top side.
Don't make the 'mirror error' too often made:) --Intron
Hi Dave,
I know this is an old post, but just needed to confirm something: the image at the link you included above shows 6 mounting holes on the PCB whereas the PCB in the picture in this link https://bitcointalksearch.org/topic/m.2676985 seems to have none.
Which is accurate? I assume that the photograph is of a prototype PCB which predated the mounting holes, but I'd like to know for sure. Thanks.
July 23, 2013, 12:51:29 PM
buzzdave how are you saying on site is 12k reduce to 8,000 when the price was 7500 or are you a re seller with your own prices set asides and different.
Are you sure you aren't confusing 7500 euros on the European site with the USD price on this US based site?
July 22, 2013, 07:21:39 PM
buzzdave how are you saying on site is 12k reduce to 8,000 when the price was 7500 or are you a re seller with your own prices set asides and different.
July 22, 2013, 07:14:03 PM
Darn, $541 in Ohio now. Lol
you have to logon and price still 500US for Hboard.
Duh, thanks.
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