Tagged Questions
2
votes
1answer
40 views
FPGA/ASIC with general SHA-1 and SHA-2 capabilities
With the introduction of ASICs and FPGAs, I am looking to upgrade my rig. However, I use the rig for academic research involving brute-force SHA-1 and SHA-2 cracking (I am working on make passwords ...
0
votes
1answer
152 views
Mining: GetWork, Get Nonce, ???, Submit Hash?
I make a getwork request and get back data, hash1, midstate, and target. Mining on a KC705 development FPGA board, and following the readme.md file here:
...
7
votes
4answers
5k views
When is GPU mining considered not-profitable?
As GPU mining made CPU mining non-profitable, at some point in time more specialized mining hardwares (FPGA and ASIC) would make GPU mining non-profitable.
When is GPU mining considered ...
2
votes
1answer
3k views
how to start mining with FPGA
I found that in my university there are some FPGA's available to test and to play with. I am a software/web programmer and I have never been working with verilog or whatever is used to program FPGA.
...
2
votes
1answer
356 views
Shares mostly rejected mining with an FPGA
I am using an FPGA to mine bitcoins in a pool, as you can see below I am not really very successful:
[1 accepted, 48 failed, 148.90 +/- 21.27 Mhash/s]
It is running at 150 MhZ but I only have 1 ...
9
votes
3answers
2k views
What is more effective than ASIC mining?
Considering that mining progressed from CPU, to GPU, to FPGA, and now ASIC mining... have we finally hit the end of the road for technological advancement?
What future optimizations can occur after ...
5
votes
2answers
2k views
BFL Single averages 800 Mhps on BitMinter Client. Advertised rate is 832. What explains the difference?
I'm using a BFL single with the BitMinter client and I never see my Mhps exceed 825 and it often goes down to 780 Mhps.
What could be an explanation for this difference?
Are the specs on BFL ...
4
votes
3answers
2k views
When will FPGAs and ASICs 'replace' GPUs for mining?
Please explain in detail, or provide an an estimate, at least.
2
votes
1answer
321 views
What other purposes can I use my [obsolete] hashing hardware for?
It's pretty easy to reuse CPUs or Video cards that were previously used for Bitcoin hashing, but what can I do with FPGA hardware when the difficulty becomes too high for it to be worthwhile to mine?
...
20
votes
5answers
25k views
Is Butterfly Labs reputable / Should I preorder the SC Jalepeno?
I'm somewhat new to the mining scene but I'm a bit familiar with everything. I see that GPU mining will become much less cost effective over the next year or so, especially around December when the ...
2
votes
1answer
1k views
How many FPGA can be attached to one computer?
I am looking at this. Dual FPGA X6500 Mining Card Rev 3 (Without Heatsinks)
So we connect the card via USB and the card will mine?
Should I buy one FPGA or several ones? Where do I attach the FPGA? ...
5
votes
1answer
2k views
How do I mine with FPGAs?
I'm not entirely sure how FPGA's work...
Do I simply buy a ZTEX and it mines, or do I need to plug it into a computer via USB?
Can I chain them?
I'm so confused.
9
votes
1answer
462 views
Is there time-to-failure data available for any of the BFL products?
Butterfly Labs (BFL) is offering a few mining products which look to be based on some sort of FPGA or ASIC but I can't find any reliable data on what parts they're using or their manufacturing ...
5
votes
1answer
1k views
Why does the BFL Single produce ~50% stales with P2Pool?
I've heard from users on bitcointalk forums that the BFL single doesn't work with P2Pool as it produces about 50% rejected shares, which is insanely high.
Why is this?
Is it possible that the ...
3
votes
1answer
245 views
Running Miner as embedded system (No OS) - Can it be done?
I've been messing about with TCP/IP stacks on some fairly powerful MCU's lately (mostly the ARM M4 series), and this sort of led to the crazy idea, that I could somehow create an embedded platform ...
7
votes
3answers
1k views
What software/hardware is required to mine with an FPGA?
I have been looking for a device that would allow me to mine Bitcoins without too much noise and heat. Something relatively small that I could keep in a shelf without worrying too much about it.
A ...
14
votes
2answers
7k views
What's the difference between an ASIC and an FPGA? Which is better for mining?
I'm a software guy with only the most basic of hardware training/knowledge so while I understand the basic concepts of ASICs and FPGAs the details are beyond me. What are the primary differences and, ...
