Topic: [Group Buy] BFL ASICs, + Board Design Underway. - page 5. (Read 15461 times)
There's some word mincing in their chip spec. One chip contains 16 engines and the board design released is supposed to support 8 chips. Now I was under the impression that the board design released would only support 2 chips even though there is space for 8 because more than 2 generates enough heat to melt traces. Let me know if I'm incorrect in that assumption.
You probably want to redesign the board because it's supposed to support 8 engines but only actually supports 2.
Not sure I understand. Each chip supports 16 engines @ 250 MHz, there are 8 chips on the board.
Where did you get 2 engines from?
The board release was the design for the SC jalapeno right? as far as I know more than 2 chips on the board melts the traces...hence why the Jally has open slots right?
You probably want to redesign the board because it's supposed to support 8 engines but only actually supports 2.
Not sure I understand. Each chip supports 16 engines @ 250 MHz, there are 8 chips on the board.
Where did you get 2 engines from?
how will the credit program be incorporated into this group buy?
You would transfer the credits to my email address, and the cost for chips would be lowered.Interested. Are there any shipping limitations? Slovenia, EU?
EDIT: not sure if you have this data but how much is necessary to pay at once? Full or half price?
EDIT: not sure if you have this data but how much is necessary to pay at once? Full or half price?
Half price for the chips now, the remainder later. There aren't any shipping restrictions, but I can't speak to what your country will do for duty/tax.
What country are you based in?
What country are you based in? +1
MrTeal, I'm in Toronto area.
Not sure why you want to redesign their 8 chip ref. board. All is there. I can't find BOM, I guess you can get it from PCB+schematics, but it would be nice to get the actual part numbers+sources. I've put all their docs in one place for my reference. Here it is if others want to use it:
http://www.petermoss.com/bitforce
4pcb.com would do this board. I have not run a quote, but I'm guessing $15
You probably want to redesign the board because it's supposed to support 8 engines but only actually supports 2.
4pcb probably could build the board for $15 if you order a run of several thousand.
I plan to place the order on Friday June 21st, so all transactions will need to be done before then.
Any updates on the progress? Friday is fast approaching...
how will the credit program be incorporated into this group buy?
You would transfer the credits to my email address, and the cost for chips would be lowered.Interested. Are there any shipping limitations? Slovenia, EU?
EDIT: not sure if you have this data but how much is necessary to pay at once? Full or half price?
EDIT: not sure if you have this data but how much is necessary to pay at once? Full or half price?
Half price for the chips now, the remainder later. There aren't any shipping restrictions, but I can't speak to what your country will do for duty/tax.
What country are you based in?
What country are you based in? +1
Not sure why you want to redesign their 8 chip ref. board. All is there. I can't find BOM, I guess you can get it from PCB+schematics, but it would be nice to get the actual part numbers+sources.
4pcb.com would do this board. I have not run a quote, but I'm guessing $15
Put me down for 12 chips
why don't we just ask BFL about who produced boards for them?
that place can easily produce them again since they've done it already, no?
that place can easily produce them again since they've done it already, no?
Is the firware or when there is a FPGA the FPGA object file
available from BFL? Otherwise you end up with just the
bare metal and not a functional miner.
intron
why don't we just ask BFL about who produced boards for them?
that place can easily produce them again since they've done it already, no?
that place can easily produce them again since they've done it already, no?
Is the firware or when there is a FPGA the FPGA object file
available from BFL? Otherwise you end up with just the
bare metal and not a functional miner.
intron
Similar situation, I have 32 codes that I would be willing to put forward to the group buy if there is a real chance (as in "99%") assembly that provides "ready to run" rigs/boards/blades.
Cheers
why don't we just ask BFL about who produced boards for them?
that place can easily produce them again since they've done it already, no?
that place can easily produce them again since they've done it already, no?
what would be the production time estimate? Please don't say two weeks.
Really depends on when chips arrive.If no chips are ordered, timeframes won't help.
4 Weeks $26 each quantity 500
what would be the production time estimate? Please don't say two weeks.
PCB scematics released
https://forums.butterflylabs.com/announcements/3295-bitforce-sc-pcb-schematics.html
Anyone figured out how expensive it would be to build and populate a clone board? https://forums.butterflylabs.com/announcements/3295-bitforce-sc-pcb-schematics.html
The board alone in quantities of 1000 would be between $20 and $40USD per board.
I have 5 quotes to support this number.
No idea on cost to populate.
I believe he's in Canada.
So... +1a ?
I'll be here all week... try the veal!
It took me a minute, yeah that's pretty funny!
I'm interested in getting in a group buy after BFL announces a shipping timeline for these chips... I don't want to end up getting 100 chips in january. I have 16 credits if that helps. Also it would be dependent upon the development of an affordable pcb to house these chips. If there is a PCB design project, is there any way I can help? I am a EE major (although no PCB design experience yet) it would be nice to contribute and learn.
I'm offering sample chips from my personal orders to reputable board designers: https://bitcointalksearch.org/topic/closed-bfl-4-ghs-chips-06-btc-per-chip-batch-29-236103
Once chips arrive, they'll go to the assembly house for anyone who's interested in having a board made, or shipped directly to you.
Is this assembly house in Canada? I ask since I am also Canadian.
Last thread hijack I promise but have you priced out the BOM yet? Some pricey support componentsit looks like.
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