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1GH/s, 20w, $500 — Butterflylabs, is it a scam? Off-topic
If someone was offering 22nm SASIC it might be a bit more plausible.lol. And som…
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n/a | rph | October 18, 2011, 10:41:21 PM |
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Significant "Other" Mining
IMO the drop makes FPGAs even more attractive than an ASIC as they arefaster and…
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n/a | rph | October 18, 2011, 10:31:10 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
BTW.. not much other news on this project.. I've been working on the multi-FPGA…
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n/a | rph | October 17, 2011, 12:12:12 AM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Neat, but since you don't need adders with more than three inputs and you have t…
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n/a | rph | October 16, 2011, 08:53:23 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Some fun reading for the VHDL/Verilog guys: http://citeseerx.ist.psu.edu/viewdoc…
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n/a | rph | October 15, 2011, 04:23:37 AM |
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Did the MysteryMiner (MM) keep his coins? Mining
My bet is on a "borrowed" GPU or FPGA cluster.More likely than a botnet with 10,…
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n/a | rph | October 14, 2011, 12:01:52 AM |
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Lowest Variable Cost to Mine BTC Assuming Non-Free Electricity Mining
I know you were probably asking about GPUs, but, for comparision:An xc6slx150-2f…
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n/a | rph | October 13, 2011, 10:57:38 PM |
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Why can't we group buy fpga and get a discount? Mining
Once you've already bought 400 parts, they know it's a pain for you to switch to…
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n/a | rph | October 12, 2011, 01:43:37 AM |
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First power bill inclusive of 24/7 mining rigs... Mining
So yea, if I was at 950 kWh for the month or so and billing was about to cycle i…
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n/a | rph | October 12, 2011, 01:20:57 AM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
That's a cool dream and for $100k you could get a lot more than 30GH/s from a sp…
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n/a | rph | October 11, 2011, 11:16:02 PM |
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Custom FPGA Mining Board: X6000/X6500 Hardware
Just wondering if you guys have measured power consumption on VCCAUX/VCCO & can…
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n/a | rph | October 11, 2011, 09:41:15 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
And a Bitcoin "hash" is really sha256(sha256(x)). So when most devs here say 120…
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n/a | rph | October 11, 2011, 08:42:59 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
The VHDL/Verilog guys in this community are top-notch and are getting results wa…
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n/a | rph | October 11, 2011, 12:26:55 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
I am sure implementing compact TCP/IP stack and HTML server on the FPGA would no…
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n/a | rph | October 11, 2011, 12:39:17 PM |
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Why can't we group buy fpga and get a discount? Mining
There are two major challenges: the first is actually getting a discount from Xi…
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n/a | rph | October 10, 2011, 10:05:31 PM |
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Custom FPGA Mining Board: X6000/X6500 Hardware
That's a sexy PCB.. well done guys..You're probably going to need a bigger heats…
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n/a | rph | October 10, 2011, 10:28:38 PM |
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First power bill inclusive of 24/7 mining rigs... Mining
Nice work wrapping the power meter I'd imagine the pacific northwest has the lo…
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n/a | rph | October 08, 2011, 12:39:29 AM |
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Why can't we group buy fpga and get a discount? Mining
You can do a full-custom 250nm design on MOSIS today for under $100k -- which is…
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n/a | rph | October 07, 2011, 10:01:54 PM |
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Why can't we group buy fpga and get a discount? Mining
I hope you are right - that would be sweet - but there is simply no way a hacker…
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n/a | rph | October 06, 2011, 11:35:05 PM |
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Why can't we group buy fpga and get a discount? Mining
I'm working on a discount.. should know more in a couple days.. if you're intere…
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n/a | rph | October 04, 2011, 11:00:20 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Thanks for all the comments guys. Dunno if I'm gonna productize/sell this stuff.…
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n/a | rph | October 03, 2011, 11:18:51 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Just a quick update - I've started work on a new multi-FPGA carrier design.Time…
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n/a | rph | October 03, 2011, 01:15:59 AM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Got the carrier PCB!It supports FPGA download & mining over micro-USB, with the…
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n/a | rph | September 30, 2011, 11:52:44 PM |
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Why can't we group buy fpga and get a discount? Mining
I'm still interested in a group buy..What are you guys thinking for the exact pa…
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n/a | rph | September 30, 2011, 04:44:34 AM |
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Why can't we group buy fpga and get a discount? Mining
Yeah, most disties have the same list prices for "big ticket" single source item…
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n/a | rph | September 30, 2011, 12:49:04 AM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
My code is full-custom VHDL, based on some good ideas in the ztex Verilog (which…
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n/a | rph | September 27, 2011, 09:05:49 PM |
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Spartan6-LX150 board for $250 -- gauging interest for mid-Oct ship date Mining
I just find .. claims of the death of GPU mining to be naive & frustrating.I've…
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n/a | rph | September 27, 2011, 10:08:36 PM |
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Why can't we group buy fpga and get a discount? Mining
AVNET is SHI.T, I repeat, AVNET is SHI.TIn the US they're the cheapest for 6s150…
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n/a | rph | September 27, 2011, 02:12:24 AM |
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Spartan6-LX150 board for $250 -- gauging interest for mid-Oct ship date Mining
Please consider SMD ceramics..-rph
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n/a | rph | September 27, 2011, 02:07:38 AM |
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Spartan6-LX150 board for $250 -- gauging interest for mid-Oct ship date Mining
Well, with the price drop, the payoff for GPUs is bleak already.A completely DIY…
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n/a | rph | September 27, 2011, 12:56:37 AM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Yeah, crazy, but it really works. -rph
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n/a | rph | September 27, 2011, 12:50:56 AM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Keep in mind that sales prices for fully assembled/tested boards will be ~$100ov…
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n/a | rph | September 26, 2011, 09:44:49 PM |
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Spartan6-LX150 board for $250 -- gauging interest for mid-Oct ship date Mining
Once miners start posting success stories and pics of stable, large, $1-2/MH FPG…
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n/a | rph | September 26, 2011, 11:16:05 PM |
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Why can't we group buy fpga and get a discount? Mining
940 to go.. -rph
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n/a | rph | September 26, 2011, 11:32:14 PM |
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Spartan6-LX150 board for $250 -- gauging interest for mid-Oct ship date Mining
The ztex Verilog is GPL and can be easily modified to reach ~150MH/s in -3, with…
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n/a | rph | September 24, 2011, 06:38:22 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
I'm up to 19.5MH/s in 6s25 -2, after working on it over the weekend.It's mining…
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n/a | rph | September 26, 2011, 01:02:59 PM |
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Modular FPGA Miner Hardware Design Development Development & Technical Discussion
IMO the upper limit for 6s150 -3 is around 200MH/s w/o overclocking.ArtForz was…
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n/a | rph | September 26, 2011, 12:43:12 PM |
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Spartan6-LX150 board for $250 -- gauging interest for mid-Oct ship date Mining
If some magical bitstream falls out of the sky that gives us twice the hashpower…
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n/a | rph | September 25, 2011, 02:18:52 PM |
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Why can't we group buy fpga and get a discount? Mining
Yup go for it, I would be in for at least 5-10 if you can get 30%+ off the Avnet…
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n/a | rph | September 24, 2011, 11:42:00 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
It's been making money with the GPL'd mpbm code from TheSeven:-rph
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n/a | rph | September 24, 2011, 06:28:47 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Got the 6s25 miner working! 11.25MH/s @ 180MHz using 35% of the device. 0.605W.N…
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n/a | rph | September 22, 2011, 10:05:57 PM |
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Why can't we group buy fpga and get a discount? Mining
FPGAs are fairly low-volume devices to begin with. qty 1000 of 6s150 is $150k+at…
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n/a | rph | September 24, 2011, 08:37:53 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Agreed.. ArtForz's worst-case routing delays and build times are certainly much…
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n/a | rph | September 22, 2011, 10:59:41 PM |
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Why can't we group buy fpga and get a discount? Mining
RE the FPGA group buy, it's a good idea but IMO will need to hit qty 250-1,000 p…
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n/a | rph | September 22, 2011, 10:25:57 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
For the power supply, I'm using a TI PTV12010WAH at the moment,$16 qty 1, 1.2V @…
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n/a | rph | September 22, 2011, 02:34:17 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Just curious: are you actually mining on the chip, or is this just confirmation…
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n/a | rph | September 21, 2011, 11:04:13 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Sounds great. Will you make and sell them?Dunno yet. I've been reducing costs ve…
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n/a | rph | September 21, 2011, 11:14:08 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Some more details on the FGG484 BGA assembly:Supplies-------------1. IR thermome…
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n/a | rph | September 20, 2011, 10:03:38 PM |
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Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH Hardware
Exactly as ArtForz said: the slx25 (~20MH/s) was selected b/c if something went…
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n/a | rph | September 20, 2011, 09:04:26 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Sharing is caring, so here's the business end of my VHDL. I'm planning to trya f…
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n/a | rph | September 19, 2011, 11:41:38 PM |
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FPGA Miner Design for Sale to Someone willing to Market It Mining
From what I've seen, $375 is not completely out-of-the-question for a mid-range…
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n/a | rph | September 19, 2011, 11:13:47 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
ArtForz, you'd have at least 3 friends for life if you posted the RTL. With 2 c…
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n/a | rph | September 19, 2011, 11:18:22 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Interesting. 5.172ns == 193MHz!Thanks for the data.-rph
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n/a | rph | September 18, 2011, 05:45:11 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Build summary as ztex requested. Hopefully substantiates that 150MH/s+is possibl…
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n/a | rph | September 18, 2011, 12:21:28 AM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
> ArtForz and rph, the theoretical speed limit according to xst for a 1 stage /…
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n/a | rph | September 17, 2011, 03:14:17 AM |
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Modular FPGA Miner Hardware Design Development Development & Technical Discussion
Wow. Respect.
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n/a | rph | September 11, 2011, 04:50:03 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
ArtForz, I've tried exactly that, and reached 156MHz in -3 (probably ~180MH/s OC…
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n/a | rph | September 09, 2011, 01:46:09 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Well, my theory is that two pipelines could (barely) fit into a 6s150-sized part…
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n/a | rph | September 08, 2011, 01:01:09 AM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
In high vol (>1k) the mid-range virtex6 parts become close to 6s150 in price per…
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n/a | rph | September 07, 2011, 01:01:40 AM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Agreed. Somebody might make a toy full-custom ASIC on a low-cost academic fab (~…
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n/a | rph | September 05, 2011, 11:58:31 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Another factor to consider is depreciation / resale value. You can mine with a G…
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n/a | rph | September 04, 2011, 07:37:45 PM |
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Modular FPGA Miner Hardware Design Development Development & Technical Discussion
http://inisyn.org/src/xup/ might be useful as a SW reference, if you haven't see…
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n/a | rph | September 01, 2011, 11:43:57 PM |
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BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards Mining software (miners)
Would be a bit nicer if it didn't use java. At least it's not TCL though.
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n/a | rph | September 02, 2011, 12:03:26 AM |
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Fpga chips Development & Technical Discussion
Fpga chips by rph
Those will do a couple MH/s per chip at best.
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n/a | rph | September 01, 2011, 11:39:22 PM |
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Modular FPGA Miner Hardware Design Development Development & Technical Discussion
Hope this is still alive. It got very quiet in here.
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n/a | rph | August 31, 2011, 04:07:14 AM |
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Custom FPGA Board for Sale! Computer hardware
Nice work everyone-rph
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n/a | rph | August 23, 2011, 11:25:37 PM |
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Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!) Hardware
You want 3-input adders on 6 series Spartans, not 2-input. And yes, of course yo…
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n/a | rph | August 21, 2011, 09:32:23 PM |
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Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!) Hardware
For anyone who has run this design on the LX9 microboard, what sort of hashrate…
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n/a | rph | August 21, 2011, 09:53:05 PM |
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Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!) Hardware
There are ways to get the critical path down to a single 2-input 32 bit adder.If…
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n/a | rph | August 20, 2011, 04:18:23 PM |
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Custom FPGA Board for Sale! Computer hardware
Are you guys using the DSP48A1s (@100MH/s?) They will not necessarilyincrease Fm…
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n/a | rph | August 20, 2011, 02:27:17 AM |
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Modular FPGA Miner Hardware Design Development Development & Technical Discussion
Awesome thread and project. How are you guys planning to assemble it when it's d…
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n/a | rph | August 18, 2011, 02:57:17 AM |
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Pandora's Bitcoin Junction (Shareholders wanted) Beginners & Help
Are you going to distribute the mined BTC as a dividend? So that, if I hold 10 o…
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n/a | rph | August 13, 2011, 05:50:44 PM |
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BITCOIN is great ! ! :)) Beginners & Help
Well, 21M bitcoins at $10/ea is $210M. Just a matter of getting into the top 210…
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n/a | rph | August 13, 2011, 05:25:06 PM |
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Auto-updates? Beginners & Help
Auto-updates? by rph
Why doesn't the bitcoin SW include an auto-updater, or at least an auto-notifier…
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n/a | rph | August 13, 2011, 05:21:13 PM |
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Whitelist Requests (Want out of here?) Beginners & Help
Ironically, this attempt to filter out spammers is turning legit users into spam…
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n/a | rph | August 10, 2011, 01:35:49 AM |
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Introduce yourself :) Beginners & Help
[tap, tap]Uhh, my name is rph, I'm a HW designer watching the FPGA/ASIC mining t…
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n/a | rph | August 10, 2011, 01:32:13 AM |
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