That was the statement which caught my attention also. Sounds like its possibly just a small creek out back with relatively low flow speed and little or no vertical drop/waterfall that would allow 10kW+ power. details and photos of the actual generator are necessary

I know what you mean. There been times when ive looked back at hardware purchases and been sad, but more often i look back and realise i got in the right moment. I bought both S1 and S3 units at the beginning of thier lifecycles, and they retained value far longer than i expected. When i bought the S3 units I expected them to underclock around janruary and turn of in may. Now it seems more like March/August respectively.

(that said, I sold most of mine to get a trio of SP31 units and pay my $CAD power bills) - Its exciting to see that people can get 1TH/400W from the SP20. An Sp31 could achieve 3.75TH/1.5kW, perhaps even better than that eventually, using similar settings

+1 better cooling would increase efficiency a bit, but not with much effect. A larger heatsink would allow slower-moving fans which would be nice, but IMO theres not much purpose in pushing them to the absolute limit unless you have cheap electricity, and even then the SP20 drives the chips quite high.

(8 chips in SP20 = 1.7TH) vs (30 chips in SP35 = 5.5 TH) If the SP3X series ran all 30 chips at the same power as the SP20 you would see it achieve around 6.3TH (similar to the original claims). However, that would use around 4.4kW at the wall. Instead, the SP35 does 5.5TH/3.6kW and the SP31 does 4.7TH/2.8kW. The hashrate gain is at about 1w/GH, which doesnt make sense for a lot of users right now

massive farms generally have cheaper power. AT this point, most people are trying to unload anything thats >1.2w/GH (most of the buyers at this efficiency have cheap power or bad math skills). Anything between 0.9-1.2W/GH is similar, where theres more benefit in liquidating and replacing with 28nm stuff that can do <0.7w/GH

not really when you consider that pushing it for an extra 100GH will increase the overall power draw by 100W - you make the machine much louder and if unless you pay <$0.10/kwh its only amounts to a few extra dollars of profit. hence why a lot of people are running this 1.7TH/1.1kW device at 1.3TH/0.8kW

not worth it - as it is most users are underclocking anyways, so putting in $50 worth of hiher quality heatsinks serves minimal benefit.

something about being backed by GAW and a few big investors and companies. They want to peg it to $20/XPY - which presumably will mean throwing millions of dollars at it while people dump the coins that are worth only $6 today. IMO its either a planned ponzi or will be one fabulous P&D where the investors get suckered by the free market. But that anticipated $20/XPY buyback price is why mining payoin is lucrative

BTC price will do what it does. The last low in the price was a drop to about $275, so right now we are seeing resistance against the price going that low again. The closer the price gets to $275/BTC, the more likely it will have a big upswing, or break past and fall to a new support level closer to $250. personally i think going back up is likely as the majority of news and recent developments are good for bitcoin and the network is significantly larger and more powerful than it was only a year or two ago.

either way, the paycoin profits are fantastic - even at 3x the bitcoin payout rate, if electricity is 40% of my bitcoin income, then with paycoin my PROFITS are about 5x that of bitcoin mining. (even if the goldrush ends this weekend, that difference cuts several weeks off my ROI timeframe)

because altcoins are sluts.
and its based on SHA256 hashing

people didn't mine gold because they wanted a gold-based economy. they did it because gold had value to whoever found it.

right now, a lot of bitcoin miners are mining paycoin at 3-8x the daily income. (down to about 2.5x now). Ive mined more in the last 2 days then I was able to by mining BTC for almost 7 days otherwise. Combined with multiple negative changes in the difficulty recently, I KNOW that my investment in mining hardware is well on the way to a positive return.

I put 3x SP31 units online a little over a week ago, and estimated that they would be profitable if:
a) bitcoin price stays >$300 and difficulty adjustments average <3.5% for the next year
b) bitcoin price gradually increases to >$600 and difficulty adjustments average <5% for the next year
c) bitcoin price gradually increases to >$1000 and difficulty adjustments average <7.5% for the next year

because of the last drop, the coming expected drop, and the paycoin profits, my return in any of the above scenarios is already about 6% higher.

the next difficulty drop wont be that large. right now about 40-50PH of hashrate is mining paycoin (probably 20PH of this is older-gen asics that were turned on again just to mine paycoin profitably). Over the weekend paycoin POW ends and most of that hashrate will flow back to bitcoin.

the drop will probably be -1% this time, and then +6% next jump. Any calculators that predict -10% or greater drop are based on estimates that the hashrate change in the last 72hrs will continue for another 11 days, which it wont

I dont see why not, a pair of SP20 units would draw around 2100-2300W at full power, within the limits of this power supply. If underclocked slightly to be 1.5TH/900W you would have no problems.

granted, you need to wire up some PCIe connectors to do it (see my sig link below if you need thick 16awg cables to do this, capable of 288W each or more)

That looks great! in-stock gear shipping at competitive prices and reasonable dicounts for bulk

however, I would really like to see the nano-farm pack a bit larger. 1,3,15 unit bundles is a weird spread.   A 6-pack for $3,500 would be really nice and perfect for a mid-range miner with 5-10kW of power and power supplies available to them. If I bought 15 i would be pushing my power limits even if underclocked.

so i guess amhash wont let you mine XPY this past few days? Its a shame that cloud mining would prevent you from making 3-8x as much by being fixed to a specific pool

1) i doubt that paycoin will reach $20. GAW and the private investors it convinced to buy into paycoin will have to throw insane amounts of cash at it to justify a fixed $20 price. Clearly this is a common train of thought since its trading at only 30% of its 'value'. (Ive mined about 10 XPY so far and might actually buy 0.25BTC worth just in case)

2) theres something like 50 PH ponted at paycoin right now. when the POW period ends i expect that ~60% of that mining power will go back into bitcoin mining. The rest will return to altcoins or be turned off again in the cases where >1w/gh gear was turned on again just to mine XPY for the week.

3) the return of that hashrate to bitcoin minng will probably put BTC back up to about 290PH, but may be too late to push this difficulty adjustment into the positives.

my guess: -1% this jump, +6% next jump


amen. 20TH netted me over 1.5BTC in the last 36hrs, and probably another 0.7 BTC in the next 24hrs. compared to expected earnings of ~0.6BTC for that same 60hrs Im very pleased and Ive got a good feeling about my recent investment in 3x SP31 units

difficulty went up about 5-10x on paycoin, its now around 1.1XPY/TH/Day

usually they ship stuff straight from the assembly line for early batches, and if its not pre-sold, they plug it in and mine while they sell thier stock. im totally fine with that IMO.

i resell locally, and mine for anything from a few days to a few months until my kijiji ads lead to a sale.

why "only 4 fans"? the C1 has a singluar fan. the other 3 are in the cooling loop and will have zero effect if you dont circulate a coolant.
unless you planned to circulate air - in which case your pump will last about 5 minutes.

tldr; dont buy something designed for liquid cooling and think it will be fine without liquid or cooling.

loving this gold rush, but i see the payouts are shrinking pretty fast. is this due to rising paycoin difficulty, or because fewer people are renting rigs?

ive got about 15% of my hashrate mining paycoins directly, and the rest on nicehash. at current exchange rates the rewards look fairly close, but altcoin trading isnt really my skillset.

Very pleased by the decrease in the last jump - but it wont last.

Paycoin has about 20PH+ of SHA-256 miners pointed at it (a mix of new equipment and equipment that wasnt profitable just days ago like the S1). In a few days when the mining stops most of that hashrate will return to bitcoin and this difficulty increase will likely be close to 7.5%