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Topic: Any update on these FPGA boards? - page 2. (Read 2206 times)

newbie
Activity: 39
Merit: 0
June 12, 2011, 02:23:42 AM
#11
to save power? are you serious??

do you not understand that the computation power in bitcoin is used as the matter to compensate for growing computational capacity?

definitely I was not clear enough.

ok to say it in other words. It does not matter how much computation power you got per electricity consumption. eventually, to catch up, every other miner will get the same rig as you and then the only way to compete will be to increase the number of those rigs you got. hence the power consumption will grow to previous level because of rapid difficulty growth that is used to consume any computational power you can throw to it. No matter how much you optimize, bitcoin generation will always consume as much power as miners can put their hands on.

this is somewhat like the arms race... and it's just as pointless. but it can't be stopped. this is an intrinsic flaw of the bitcoin design unfortunately.

Yes, eventually low power, high density miners will win and GPU miners will lose out.  How many 4x6990 power hungry mining rigs can one put in a normal house?  how to deal with the heat?  the noise? 

How many cool, efficient and silent FPGA boards can be run? 

There will be a new technology and a tipping point to make GPU obsolete.  It may not be today, it may not be fpga, maybe it is ASIC?  but the day will come and power and efficiency will be a major factor.
full member
Activity: 124
Merit: 100
June 12, 2011, 02:16:26 AM
#10
to save power? are you serious??

do you not understand that the computation power in bitcoin is used as the matter to compensate for growing computational capacity?

definitely I was not clear enough.

ok to say it in other words. It does not matter how much computation power you got per electricity consumption. eventually, to catch up, every other miner will get the same rig as you and then the only way to compete will be to increase the number of those rigs you got. hence the power consumption will grow to previous level because of rapid difficulty growth that is used to consume any computational power you can throw to it. No matter how much you optimize, bitcoin generation will always consume as much power as miners can put their hands on.

this is somewhat like the arms race... and it's just as pointless. but it can't be stopped. this is an intrinsic flaw of the bitcoin design unfortunately.
donator
Activity: 392
Merit: 252
June 12, 2011, 02:11:45 AM
#9
Um I haven't done any math yet. I'm just thinking in concepts. Long term, obviously, efficiency is gonna trump raw hashing power. The less efficient miners are gonna start dropping out.

Can I copy what you came up with? That's good.

I think that difficulty is going to exceed the capability of any FPGA units going forward, and there isn't a feasible way to beat the ongoing and increasing difficulty using FPGA unless you can do 5 cores x ~80 MH/s for around $200 - $300. If there are existing multi core, commodity FPGA boards that could be relatively easily re-purposed for Bitcoin mining, well.. Then you have something. If those boards exist, the next step is to find out if you can get them at a discount on volume. You have to make money, right?

Electricity costs can definitely impact profitability, but to be competitive with commodity GPU mining, the scenario mentioned above would need to happen before there is any possibility of it being an alternative or successor to existing methods.

newbie
Activity: 59
Merit: 0
June 12, 2011, 01:55:26 AM
#8
I'm working on a 1st prototype right now. I'm glad there's interest  Smiley. There are more advantages than just power savings: FPGAs will also be quiet and you don't need a motherboard slot. The only hardware you need is a USB port. And the speed will go up in the future (80 Mhash/s was just a first attempt, by fpgaminer). He's working on putting a second core on a Cyclone IV right now. They get 80 Mhash/s with about 10 watts-- a pretty damn good power ratio

Anyways, next weekend, I'll have all the parts to try the board out. If it works, I'll start selling them on Sunday for around $450. That's a $150 cut off the Terasic development board price. If it doesn't work, I'll hang my head in shame and go back to the drawing board. Haha

Let me also mention- there's no fan. It's a passive heat sink

I would be interested in multi-fpga boards if you have plans for that!
full member
Activity: 210
Merit: 100
June 12, 2011, 01:50:42 AM
#7
Um I haven't done any math yet. I'm just thinking in concepts. Long term, obviously, efficiency is gonna trump raw hashing power. The less efficient miners are gonna start dropping out.

Can I copy what you came up with? That's good.
donator
Activity: 392
Merit: 252
June 12, 2011, 01:44:56 AM
#6
Can I see your maths?

Here's what I see..

full member
Activity: 210
Merit: 100
June 12, 2011, 01:21:21 AM
#5
But you need to consider the other hardware costs. I mean, you could buy an old laptop on eBay for $20. As long as it has a USB port (or several...) and an internet connection, you're good to go. I've already found cheap suppliers for the power supply and cables, so those would be included in the package.

And if fpgaminer can get the speed up to, say, 120 Mhash/s, it starts to get really competitive...
donator
Activity: 392
Merit: 252
June 12, 2011, 01:19:02 AM
#4
Quite expensive per MH/s. The market is so fickle and volatile right now, I don't know that there'd be any interest in FPGA beyond the cool / hobby factor unless costs were comparable on a 3 month timeline, including the power 5-10x power savings. As I calculate it, at current BTCUSD exchange, it would take 300 days to break even for $450 running 80 MH/s @ 10W.

Is there any probability that a 400-800 MH/s unit could be produced on a small scale for $300-400? I don't see it happening. Cool idea though.
full member
Activity: 210
Merit: 100
June 12, 2011, 01:06:46 AM
#3
I'm working on a 1st prototype right now. I'm glad there's interest  Smiley. There are more advantages than just power savings: FPGAs will also be quiet and you don't need a motherboard slot. The only hardware you need is a USB port. And the speed will go up in the future (80 Mhash/s was just a first attempt, by fpgaminer). He's working on putting a second core on a Cyclone IV right now. They get 80 Mhash/s with about 10 watts-- a pretty damn good power ratio

Anyways, next weekend, I'll have all the parts to try the board out. If it works, I'll start selling them on Sunday for around $450. That's a $150 cut off the Terasic development board price. If it doesn't work, I'll hang my head in shame and go back to the drawing board. Haha

Let me also mention- there's no fan. It's a passive heat sink
full member
Activity: 182
Merit: 106
June 12, 2011, 12:55:50 AM
#2
hero member
Activity: 756
Merit: 502
June 12, 2011, 12:54:53 AM
#1
I would like to do the long-term mining via these, to save on power.

Anyone knows if some are coming to market?
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