Topic: * (Read 16688 times)
Just FYI, seeing this mining rig kind of inspired me (a while back) to see what would happen if I took a more modern FPGA - 28 nm technology (Cyclone V) and used it as a platform for BT mining. I wound up looking at the C5-A9 (which has 301K logic cells or is twice as big as the LX150's). Since it is a newer technology, I figure I should be able to run it at 250-300 MHz clock rate - and by putting two of the FPGA's on a card, the resulting performance should be around 1000-1200 MHash/sec (and probably at a lower power consumption since it's 28 nm technology).
Anyways we have a web site located at :
http://www.raspberrycoins.com/
If we get enough interest, then we'll do a crowd-sourcing thing, and make some boards for sale.
The only issue is that ASIC miners are on the horizon - BFL has announced that they have shipped, and if you reconfirm your order, you'll get your product at some time. Naturally ASIC miners would render FPGA's obsolete (for mining purposes).
Anyways we have a web site located at :
http://www.raspberrycoins.com/
If we get enough interest, then we'll do a crowd-sourcing thing, and make some boards for sale.
The only issue is that ASIC miners are on the horizon - BFL has announced that they have shipped, and if you reconfirm your order, you'll get your product at some time. Naturally ASIC miners would render FPGA's obsolete (for mining purposes).
UPDATE 6:
37 boards already sold in pre-paid "Buy-it-now" transactions.
Current winning bids for 9 "good" boards:
shep80: 7 BTC * 4 boards
marto74: 7 BTC * 4 boards
MWNinja: 6.5 BTC * 1 board (outbid for 4 boards)
Current winning bids for 2 underperforming (below 800MH/s) boards:
goxed 5.5 BTC * 2 underperforming boards.
So, current lowest bid should be >6.5 for normal, >5.5 for underperforming boards. The auction ends today 18:00 PST.
37 boards already sold in pre-paid "Buy-it-now" transactions.
Current winning bids for 9 "good" boards:
shep80: 7 BTC * 4 boards
marto74: 7 BTC * 4 boards
MWNinja: 6.5 BTC * 1 board (outbid for 4 boards)
Current winning bids for 2 underperforming (below 800MH/s) boards:
goxed 5.5 BTC * 2 underperforming boards.
So, current lowest bid should be >6.5 for normal, >5.5 for underperforming boards. The auction ends today 18:00 PST.
Does goxed have 5.5 for each or both?
Current winning bids for 2 underperforming (below 800GH/s) boards:
Somehow I doubt that there are any FPGA boards that make 800GH/s 
If you have 48 units why is the minimum bid now 6.5 BTC?
I already sold 24 boards in an immediate "Buy now" transaction, so the auction is only running for the remaining 24 boards. There are bids of at least 6.5 for all the boards except one. So, if you want to buy more than one board you have to outbid that one.
OK thanks, I'm out then.
If you have 48 units why is the minimum bid now 6.5 BTC?
Market price is recovering, having a hard time justifying a >100 day ROI with current difficulty and piles of ASICs on the way.
If I'm just missing something, then I bid 12 BTC for two units, USPS to Pennsylvania
Market price is recovering, having a hard time justifying a >100 day ROI with current difficulty and piles of ASICs on the way.
If I'm just missing something, then I bid 12 BTC for two units, USPS to Pennsylvania
lol.. I concur.. but again.. there is a buyer out there for everything.. he is selling them at about the right time.. difficulty isn't through the roof yet (did just go up and allchains is forecasting at least another 20% bump 11 days from now).. plus not too many ASICs in the wild yet...
My bid, and yes I am aware of it being below 6.5btc/board still stands... just in case anyone backs out/falls through...
thanks!
If you have 48 units why is the minimum bid now 6.5 BTC?
Market price is recovering, having a hard time justifying a >100 day ROI with current difficulty and piles of ASICs on the way.
If I'm just missing something, then I bid 12 BTC for two units, USPS to Pennsylvania
Market price is recovering, having a hard time justifying a >100 day ROI with current difficulty and piles of ASICs on the way.
If I'm just missing something, then I bid 12 BTC for two units, USPS to Pennsylvania
so price-wise 12 boards = 1 x Avalon batch 3 roughly? Food for thought
48 units x850mhash = 40Ghash (2 3rds of a avalon for the price tag 288BTC) umm no thanks.
more better maths.. based on avalons SPECULATED batch 3 price of over 88 BTC for 65Ghash
roughly it would take just under 15 FPGA to be a similar cost comparison (6BTC x 15 = 90BTC)
each unit was specified as 850Mhash AS NEW, these units are second hand so actual burnout / current speeds are guesses. but using AS NEW speeds just for this maths comparison brings it to less then 13G/Hash (850mhash x 15 =12-13G/Hash)
so that works out 5 less hash power then avalons extremely high priced batch 3. to me thats OVER priced for a 2nd hand piece of gear so thats a BIG NO from me.
if it was based on avalons reasonable price ($1500 for 65G/Hash) then doing the maths i would still be unhappy buy all 48 units for $1000 knowing that they are second hand. as it also brings up the question. if they are productive, why sell them?
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