Topic: BITMAIN!! Make a 200-400 Watt miner!! - page 2. (Read 4366 times)

 Less on a couple of my ETH systems - though not by a lot.

 If AMD made a 754-based CPU on a semi-current process I could probably drop the 190ish watts my pair of 7870 single-card Semperon 3000+ systems and the 170ish the 7850/Semperon 3000 systam is using by 30+ watts each.

 On the other hand - existing hardware, ZERO out of pocket for the most part (I did buy ONE HD 7870 locally for $80, but I figure it'll make THAT back by the time that system becomes unprofitable - and if it misses by a bit, no big deal it turns into a very cheap serious RC5-72 cruncher system).


 Unless someone (Bitfury-based most likely) gets a 14/16nm custom-gen Bitmine miner out before the halfing, it's looking very iffy on my returning to Bitcoin mining at all this year - though I'm going to have to do some serious number crunching when the A4 shows up before I decide.


 As much as I'd like to see a sub-$400 Bitcoin miner show up in that generation, I'm betting it doesn't happen this year IF at all. Takes about as much time and effort to design a small miner, the infrastructure costs on it are HIGHER per MH, making it that much harder to achieve ROI on it - and I suspect the market for such a "small" miner isn't all that big.
There's a REASON Bitmain has never bothered releasing a BM1385-based "U-series" miner design, much less an "R1" upgrade to the next-gen chip.

Ive all ways wanted lower cost never really worried about the power cost if they had priced the s7 right i would have bought a few .my S5 paid half the power bill in the house and did Roi in no time but i didn't even notice till a friend ask one day was it worth it.( but Ive said that before )shows how much i care about Roi , i didn't even notice having to much fun just mining and covering cost, i was happy till the s7 .was so hoping the S7 was gonna be better or be more home minded .


I wouldn't under volt under clock one if i had one because i would use what i pay for . id keep it at defaults.

200-400W is not the issue, if you want one of those run a single board S7 and sell on the other two boards. The issue is how efficient is it, and will it have a long enough life to make some money?


Rich

I wish they would send you chips.. :S.

I am keeping space in the solar array for 3kwatts of some thing new at .15 watts or lower

That's doable. 500W wall, 90% PSU, 30W for fan and controller and 95% VRM gives 0.1J/GH chip-level. Two boards of 24 bitfury chips would hit that easily.

LOL let's be realistic here bros.

If you make them at least  4TH at 500w.. then you will sell more then 1000..   

I loved my S3's at the time they were tanks.   Truly was a great miner.   So I can see why some want a miner in this area, espically if in a home setting.  But now that I have a mining area I have to admit I like the big miners like the S7.

I could be in the few but I would rather have cheaper cost with big hashing speed.   I am more worried about cost then power needed to run.

Asic builders have caused this due to self mining tactics and refusal to sell chips to developers look at market cap

https://coinmarketcap.com/

market cap

1   Bitcoin                  $ 6,901,475,213   $ 443.42   15,564,300 BTC   $ 96,974,200   -1.38 %   
2   Ethereum              $ 1,192,892,754   $ 14.87   80,206,333 ETH   $ 53,473,400   5.28 %

all coins from rank 3 to 10 add to   about 540 million



The tactic to fight asic miners will be   a gpu card like ETH

X11 really is too small a market to support multiple ASIC makers - I'm more than a bit supprised to see 2 CLAIMED ones right now (though only one that has shown actual product to anyone reputable, and THAT product seems to be in very short supply).


ASIC for ETH = suicide, ETH moving to POS will kill that market too soon.

Unfortunity there are not miners for X11 who bitmain make.

I done this ... don't need to redo the airflow ... that miner is running for months now , in one of my friend apartment bc electricity is free there ... Fan set to 45-50 % ambient temp is around 20-23C , hashing board is around 60-65C ... i still have that 2 hashing boards as a spare
when new gear with half the power use come out you will be able to buy a used antminer s7 probably around 2-300$ or less ... but you have to pay big $$$$'s for the new gear with half the power use , just think what you paid for the S7 first batch ...

+1, best way to get a 400W miner.

philipma1957,I agree almost completely with your wall-O-text  

You gotta blame Bitfury for NOT selling ANYTHING to home miners in recent years,perpetuating the corp miners takeover  

You gotta blame KnC for the same  

Avalon & Bitmain at least SOLD MINERS to us lowlifes  

Even though early on Avalon SCREWED over the home miner market by with holding bought & paid for chips for the Klondike home miners  

Then there's Hashfast/Bitmine/Black Aorrow that took that cash out of miners,kept the hash power out of home miners hands  

BFL & a few others for VERY late delivery of any hash power to home miners,further wringing out the home miners  

I really,really hope to see BTC fall flat & any other GPU/CPU mined coin take over  

I'll support those coins for as long as I can find & afford GPU's ,which is forever  

If you're going that route, don't forget to chuck the housing and redo the airflow entirely because the fin-dense heatsinks aren't designed for the low-pressure airflow you're going to get from a fan blowing into a mostly open space. Make sure the end of the board farthest from the fan doesn't burst into flames. Also make sure you can afford the initial outlay of buying three times as much miner as you want and then making some back by parting it out. Also make sure you don't lose your shirt on it when new gear with half the power use come out about the same time the block reward is halved within two months.

Want a 200-400W miner ?
Get a S7 from ebay or amazon ... remove 2 hashing boards from left and right side , leave the one in the middle ... get a 750-800W 80 PLUS Certified power supply if you want to run just one hashing board ... keep the 2 hashing board as a spare or sell it on ebay as a parts for S7 .. set the fan to 45% or less , but watch the board temp and adjust the fan speed as need it , try to keep the temp around 60-65 ... and you good to go you have a 400-450W miner with 1.5TH/s hashing power . If you want less power usage you can always under clock your miner
You can get a used S7 under 600$ , im sure the price is going down in the future as we are closer to the halving event in July ... You can sale each hashing board around 150$ right now.. so from 300$ you have a 400W miner + have to spend some money on a PSU ...

Yeah   I will keep mining eth for now along side BTC. But If I did not have my good power deals  for the btc gear It would be almost all eth coin.

In fact I am trying to get two really reliable eth miners setup to mine at my friends shop in Brooklyn Navy Yard.  I have one built will build the other soon.


So bitmaintech  this is what is happening to people that would prefer mining with your gear. 

We are mining with pc/gpu's  and bypassing you.  Since mining eth coin and exchanging some for BTC is cheaper then what you offer.

Okay  right now the marketcap is

  bitcoin at  6.87 bill
 ethcoin at  1.97 bill

https://coinmarketcap.com/


This is a direct result of  asic builder sucking their own cocks so to speak.   Feels good  and you think you don't need anyone or anything else in the world.   Eventually you close the loop and die off.

Bitmaintech
Avalon
Bitfury
B&W

Could be in a world of shit very soon.   Just track the marketcap.

Do you want to mine bitcoins? 

 Rent an ethminer from me  I can pay 2x  what you get from renting an s-7 from nicehash.

the in balance has been caused by  Asic miners  just pleasuring them selves from self mining and restricting asic chips to the rest of the world.


See this thread   https://bitcointalksearch.org/topic/m.14904329

moved from bitcoin to alt coin. Just because people do not see the hand and hand relationship  alt coins and btc have.

Oh well.


To be transparent  I have

210-220 mh  mining Eth coin    power used =  1900watts    monthly earnings 805 usd  power cost is 255 net = 550

27th             mining  Btc coin   power used =  7000watts     monthly earning  925 usd power cost is 0    net = 462

my deal is  free power and split coins on the 27th.



I have some compac sticks mining at bravo-mining,
I have some eth coins,
I have some btc coins,
I have some cash,
I have some btc loaned to people,

So shift the cap on btc to 5 bill  and on  eth to 3 bill   and the aisc builders are in bad shape.

Me thinks we could be seeing a fundamental shift away from BTC to ETH. 

Mostly caused by asic builders  fucking the pooch.

But I have been wrong before so time will tell.

The problem isn't that there isn't a market. The problem is that it's a harder market. Shipping a hundred machines on a pallet to one technically-competent person is a lot easier than shipping out a hundred machines to a hundred idiots who then need support. So they're willing to take a slight hit (in Bitmain's case, it's what, 1% off the purchase price?) to sell to a few giants who won't ask a lot of questions rather than sell to a thousand idiots with a dozen questions each if you get the same amount of money from either group. Bitmain wants to maximise profits, and if you can get the same revenue while unloading 90% of your support staff salary your profits just went up.

If I knew that I was guaranteed to sell 1000 units, it'd be worth my time to R&D and manufacture a small miner. It's not that the dev and manufacturing costs aren't enough to recoup it. The logistics of mass shipping and customer support (which Bitmain has sucked at for years now, think how much worse it'd be with twice as many customers) is what makes it annoying. Actually, what I want to build I can pretty much guarantee will sell at least 1000 units; the only thing stopping me is access to chips.