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
Topic: [ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 253. (Read 576776 times)
July 08, 2013, 04:21:46 AM
July 08, 2013, 04:14:01 AM
Just wanted to briefly say that this is brilliant. A manufacturer who is actually responding to questions, and within minutes. Not to mention a sensible refund policy and I could use my CC. Jumped on for a starter kit. Thank you Dave!
Thanks for voting with your wallet. We will do our part and get this hashpower out to you all, and keep you informed as we go.
July 08, 2013, 03:02:20 AM
Just wanted to briefly say that this is brilliant. A manufacturer who is actually responding to questions, and within minutes. Not to mention a sensible refund policy and I could use my CC. Jumped on for a starter kit. Thank you Dave!
July 08, 2013, 02:27:56 AM
Anyone know if safe to order with CC and site didnt use encrypted?
July 08, 2013, 02:05:13 AM
Independent (aside from Intron & C-scape's) verification of the bitfury chip just posted over on the dev thread. Shows a pic of a single chip tester board designed by Intron, with screen full of accepted hashes...
https://bitcointalksearch.org/topic/m.2677551
https://bitcointalksearch.org/topic/m.2677551
July 08, 2013, 02:00:26 AM
Amazon has my emails freed up now - message me if you *did not* get your email when you ordered.
July 08, 2013, 01:55:05 AM
August delivery means by August 31st. This isn't an exact science, so I'm trying to give realistic dates. I hope to exceed expectations on that. I'm 100% confident in this team and the product. There's been so much development in the last 6 - 9 months that has been kept totally under wraps. By sending our chips out into the forum community we've got independent verification that they work - Intron and C-scape were able to tweak their Avalon design and already have Bitfury's chip hashing.
Here's the thread for that development effort: https://bitcointalksearch.org/topic/ann-bitfury-is-looking-for-alpha-testers-of-first-chips-free-money-here-228677.
I have deployment for the 100TH mine (https://picostocks.com/stocks/view/19) from late July into August. I have to reserve time & energy for that project. I want to keep expectations realistic and not overpromise on the hosting side. Its no mean feat to host 5,000 of these H-boards.
As confident as you were with Tom's bASIC?
July 08, 2013, 01:22:59 AM
Hello Dave!
I just wanted to say a few words: well done!
I wish you good luck with your business, and (I am becoming un-polite here, but I can't resist :-) ) let's kick BFL's balls!
I just wanted to say a few words: well done!
I wish you good luck with your business, and (I am becoming un-polite here, but I can't resist :-) ) let's kick BFL's balls!
July 08, 2013, 12:40:04 AM
Why is the 16 chip board rated to deliver 25GH/s when the chip description claims "Demonstrated performance 2.7 GH/sec @ 0.835V (0.8W/Ghps)".
Shouldn't a 16 chip board deliver 43.2GH/s?
Shouldn't a 16 chip board deliver 43.2GH/s?
The chips are undervolted, but have been tested upto 2.7Gh/s https://bitcointalksearch.org/topic/m.2568673.
Might be possible to modify board of higher voltage: https://bitcointalksearch.org/topic/m.2664346
July 08, 2013, 12:29:47 AM
You should only accept BTCitcoin
July 08, 2013, 12:22:34 AM
I do wonder if the setup instructions, provide cooling info. No mention of fans in the description.
We undervolted the boards for heat & power considerations. No heatsinks are necessary, though we do expect supplemental fan cooling to be necessary - they put off about 250 - 300w fully loaded, so yeah you need to blow air on them. We didn't see the need for extensive heatsinks and individual fans that just add cost, maintenance and noise.
I notice the the PCB's in the photo are 2 layers. Avalon PCB's are 4 layers giving more copper to grab the heat.
Do you know if you plan on OCing these units at all?
Edit: Never Mind they are 4 layers.
From what I can tell there is no room to install a heatsink as it seems they will be stacked close together once the H-CARD are attached to the M-CARD.
FYI I ordered an Aug device.
July 08, 2013, 12:21:38 AM
Why is the 16 chip board rated to deliver 25GH/s when the chip description claims "Demonstrated performance 2.7 GH/sec @ 0.835V (0.8W/Ghps)".
Shouldn't a 16 chip board deliver 43.2GH/s?
Shouldn't a 16 chip board deliver 43.2GH/s?
July 07, 2013, 11:54:17 PM
Regarding the FCC and Electromagnetic Interference, you can probably do a very cheap test using an AM and FM radio (or one with shortwave as well - like the Tecsun PL 380 which has an excellent voltage signal meter). Ex. I found a badly built LED light bulb from Ebay to have horrible am/fm noise.
Other than that, avoid switching power supplies (or ensure they are properly filtered), and check out the "pin one problem". Putting the entire thing in a solid metal case (minimal openings) should also be very helpful.
http://pin1problem.com/
Other than that, avoid switching power supplies (or ensure they are properly filtered), and check out the "pin one problem". Putting the entire thing in a solid metal case (minimal openings) should also be very helpful.
http://pin1problem.com/
July 07, 2013, 11:52:59 PM
Based on 25% difficulty increase each adjustment, my calculation shows we can only get 75% investment back in 3 months, 95% in 6 months, based on current BTC/USD price. Does anyone else get the same result?
July 07, 2013, 11:41:49 PM
August delivery means by August 31st. This isn't an exact science, so I'm trying to give realistic dates. I hope to exceed expectations on that. I'm 100% confident in this team and the product. There's been so much development in the last 6 - 9 months that has been kept totally under wraps. By sending our chips out into the forum community we've got independent verification that they work - Intron and C-scape were able to tweak their Avalon design and already have Bitfury's chip hashing.
Here's the thread for that development effort: https://bitcointalksearch.org/topic/ann-bitfury-is-looking-for-alpha-testers-of-first-chips-free-money-here-228677.
I have deployment for the 100TH mine (https://picostocks.com/stocks/view/19) from late July into August. I have to reserve time & energy for that project. I want to keep expectations realistic and not overpromise on the hosting side. Its no mean feat to host 5,000 of these H-boards.
As confident as you were with Tom's bASIC?
July 07, 2013, 10:55:04 PM
Did I say something wrong?
Long story. Did you mean tom like "tomorrow", or tom like "Tom" 
July 07, 2013, 10:47:50 PM
Any good cases in the works for these? Something you could add up to 16 boards and you expand out the setup?
July 07, 2013, 10:47:40 PM
It says the kit can be rackable. How do you do that? Specifically where can you find a frame that can hold the boards?
July 07, 2013, 10:41:17 PM
I do wonder if the setup instructions, provide cooling info. No mention of fans in the description.
We undervolted the boards for heat & power considerations. No heatsinks are necessary, though we do expect supplemental fan cooling to be necessary - they put off about 250 - 300w fully loaded, so yeah you need to blow air on them. We didn't see the need for extensive heatsinks and individual fans that just add cost, maintenance and noise.
Hi, can you please clarify what the power consumption stated above refers to? I'm confused as other posts refer to 40W per 25GH/s board.
We were trying to be conservative and set expectations safely for power consumption. At this point we are confident that each H-board pulls 15w. I still have yet to see the final number as measured on the M-board, so we won't update specs until we have that.
July 07, 2013, 10:36:43 PM
I do wonder if the setup instructions, provide cooling info. No mention of fans in the description.
We undervolted the boards for heat & power considerations. No heatsinks are necessary, though we do expect supplemental fan cooling to be necessary - they put off about 250 - 300w fully loaded, so yeah you need to blow air on them. We didn't see the need for extensive heatsinks and individual fans that just add cost, maintenance and noise.
Hi, can you please clarify what the power consumption stated above refers to? I'm confused as other posts refer to 40W per 25GH/s board.
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