Bitcoin Forum

i am interested in it but really want to find one with the shortest break even!
This one wasnt too bad
http://fpgamining.com/     400 megahash/s at 17.2 watts and it cost like $580.0 and my power per kilowatt hr is 13pence so it worked out at £20.16 to power it 24/7.
But after working it out it looked liek it might take time to break even at it roughly earning 0.5550 bitcoin a day!


SO anyone got a good fpga that didnt take long to break even!

Maybe you should check this http://www.ebay.com/itm/Butterfly-Labs-Bitforce-BFL-Jalapeno-Pre-Order-3-5Gh-s-Bitcoin-Miner-ASIC-/251137750996?pt=LH_DefaultDomain_0&hash=item3a78f9f7d4#ht_730wt_1141 . Looks promising. Still in preorder stage though.

Unfortunately if Bitcoin changes significantly, the ASICs could be rendered useless. They're dedicated mining units, so they're only good for mining.

Break even times for hardware are usually between 1-4 years. FPGAs take longer, GPUs still have a bit better Mh/$ ratio but require more power. You may wait for asics to come out. People are working on it: e.g. https://bitcointalk.org/index.php?topic=99497.0



The numbers are way of. Someone is preying on people's money...

Yes break even for fpga can be a little long. New technology usually comes at a price, but the benefit is they use ALOT less power for the same hash. Some are even more user friendly than gpu's. So i believe in the long run fpga is worth the initial cost.

It's very very very unlikely that the mining will change

I love how they are upcharging for the preorder and somone actually bought it...

Mining will change. Trust me. The asics will become useless. GPU mining is the way to do it. If those things will make 300$ proffit a month they wil change the code. Bitcoin's will loose their value if the asics take it over. They won't let this happen. Remember what is said!

Huh?

there is so much mis-information on this thread it is absolutely ridiculous.

Currently the most efficient way to mine Bitcoins is with an FPGA device, however the release of ASIC's is coming soon and they will be far superior to current FPGA devices.

Are you thick or what??????????????

ASIC will be the SAVIOR of Bitcoin !!!!!!!!!!!!!!!!!

No longer will it be easy or cheap to 51% the network,ever!!!!!!!!!!! With possibly 80 TH at least coming by december,it will be extremly hard to do  ;D

ASIC's will & are CHEAPER than vid cards,no more tweaking core/mem/voltage or driver updates or expensive mobo's,heat will not be as big a problem either.

Alot less power consumption,10x less at least.............................


http://i63.photobucket.com/albums/h148/Bigblock462/Stephen-Colbert-Popcorn-1.gif

Flame on  8)

lol, do you end every post with "flame on?"

Oh yes so the core coders are gonan change the entire way mining works which will take a load of effort and
In turn reduce the security of the network. The developers want us to mine the more the better. They wouldn't kill off a like half of the networks power! And then all the clients would have to update....
And that means everyone with a fpga wouldn't update and I don't think others would too!

Why,yes I do................I know its coming & I love it  ;D

http://i63.photobucket.com/albums/h148/Bigblock462/Flameretardentsuit.jpg


I'm ready,fire it up    8)

Temp climbing. 100 degrees. 500 ..... 1000

Bullshit. Stop spreading fud.

The only thing that will change any time soon and is always changing is difficulty, to maintain that blocks are not solved too quickly, by the network in general as I understand it.

What's the difference between the FPGAs and the new ASICs that makes them so much cheaper?

FPGAs are generic logic devices.  You essentially program the interconnections between logic gates to build whatever device you need, and when you need it to become something else, you flush it out and dump in new code.

ASICs are fixed.  The cheapest ones are pretty similar in structure to an FPGA, but with permanent connections instead of make/break links.  Because the links are permanent, the chips are faster and less expensive per unit (assuming a medium-ish production run, there are still plenty of setup costs.  I think someone posted quotes that went up from around $200,000 not long ago.)

More expensive is to go all the way down to directly building the exact gates that you need in an optimized layout.  This is pretty much identical to how mass production chips are made, where the designer (or the compiler more likely) has full control over the physical structure.  That enables much higher performance, but with insane setup costs.  For a complex chip, you need a very large production run to amortize the costs.

this is seems to be a some bit of scam. why not to order direcly from BFL... 6000 orders is NOTHING for the ASIC production....

Yeah, only developing ASIC takes time and money. As soon as the chip is ready you can produce them fast and at low price. Correct me if I'm wrong.

There are up front costs, and then per run, per wafer and per chip costs.  The fabs are rarely totally transparent with them, preferring instead to give quotes like "X for the first 1000 chips, Y for each subsequent thousand", or whatever.

Assuming that there are no errata, Y should be much lower than X.  If there are errata, and they can't be fixed with blue wire, you might be back to step 1.

Thanks everyone!

 If investing in FPGA nowadays, we should consider whether the FPGA sellers have plan for you to upgrade to ASIC rigs.