for ethereum? sure that might not be the 1070 specs?

for vertcoin (possibly a better return than ethereum), youd get about 30MH (=/-10%) of lyra2re i expect

thats stunning - what does one do with such a large, deep stone?

the 1x->16x usb riser is the best option, and sould work in 90%+ of motherboards

ps: avoid MSI mobos, particularly the "killer LAN" ones, as they require abnormal drivers tat are a PITA

i cna get r9 290 cards for about $150, whereas the rx480 (with less hashrate) costs about $300. surely the 290 may be a better deal if I intend to mine for 1yr+?

what about nvidea cards? seems like a 750Ti (cheaper and less power hungry than the r9-290) can mine FTC at nearly the same $/GPU/day. would a rig of those be a better option?

is that applicable to the reference sapphire 290 as well?

how much for 3x powered risers, shipped to M6K2Z2? (toronto)?

US only? Im in Canada, would be interested in 5x 380X if you can do that for ~$700

thats what i did to mine   figured about $5 of scrap metal, and some abnormal 140mm fans that may be useful at another time. dont know if theres any market for the PCBs

I dont think manufacturers will standardize a design anytime soon - by offering a full product their margins are probably improved

as for power density/draw, a universal heatsink isnt ideal but it is pretty sufficient. simply upgrading the fan/fanspeed could allow a +/- 50% power capacity.

The bigger issue is board layout, where all components were set to a specific maximum thickness in heatsinked areas (so that only critical parts (ASIC, regulators) are snug to heatsink and other components are not), and this could prove inconvenient to some layouts

agreed. it was bound to happen, but there was something magical about the days when expensive, low-consumption devices meant having >10kW of power draw meant you were a significant part of the network. My small DIY stack of S1 units at home at one point made up something like 0.0003% of the network and did quite well for themselves even at $0.12/kwh

each generation since has been geared towards power-and-ignore systems that you need dozens of, and cheap electricity for, to make much return. But with that has come the concept that mining hardware is a 2-4 year investment now that we have 14nm and underwent the halving. the easy money is gone

changes in the hashrate can affect the block time, such as a drop in hashrate making blocks a bit less frequent (lets say 12minutes if ~15% of the network leaves). In turn, full blocks get fuller and transaction fees climb a little as teres more fighting for a spot. As the fees grow, so will the incentive to mine the block. today we see ~0.7BTC/block fees - wit 12min blocks we could see >1BTC in fees - an extra ~3% incentive to compensate. If things got particularly bad with ~15min blocks, fees could reach 1.5BTC, almost a 8% added mining incentive.

I dont see it causing a doomsday - but i do expect we will see some evidence of lower block frequency over the next 10-14 days until the next adjustment. beyond that point, difficulty will change and some miners will probably return.  I expect that a lot of major facilities have a $300-500/BTC production cost right now and will not change thier hashrate. only smaller home miners and older gear like S5/SP3X will leave


as for hashrate security - the halving will disincentive any major hashrate growth in the next few years unless/until the price rises considerably.

lets see your math. with 3%/jump difficulty rise (its a bit low to adjust for the fact we might see an initial 10-20% drop due to the halving) and power cost of $0.07/kwh it will take a little over two years to break even, and unless <11nm is produced by then the miner will be competitive with the newest-gen until ~2020, where difficulty will likely become fairly stable, mined by anyone paying <$0.06/kwh (all-in: power, rent,wages,etc). Any shift in price will likely have a similar equilibrium effect on hashrate/difficulty.

3.2BTC/13TH is a bad price at >2yrs breakeven. 2.8BTC/12TH is slightly more sensible (a bit less than 2yrs breakeven), but still high. Its likely we see prices fall further if/when a competitor gets to market and bitmain starts building more than they can sell. But if you had free power, both units could pay for themselves within a year, and produce over a bitcoin in profit during the second year.

tldr; if you pay <$0.05/kwh its arguably worth it. If you pay <$0.03/kwh you'd be silly not to be mining (perhaps with an S7)

back to the top! custom orders welcome - if you need 5000pcs I'm the guy for you!

its the older-gen Pi tho, so dont expect much when the Rpi3 is only $40. maybe $10-15 if you're lucky. but its great to convert to a node or some other micro-pc application. In fact, some units sold them with minimalistic controllers that lack ports and some features like audio/hdmi/etc and may have virtually no resale value as it would require being controlled almost entirely by ethernet/ssh

once we break 700, we would be in full bull market and id expect some serious rally in the next 6 months (perhaps less time, but we've been seeing a lot of sideways in the past year.

but i think we will fall below $600 on finex, though i expect it to be brief, quickly bouncing back into the $640 resistance. Theres likely to be some serious FUD in the next 72hrs about blocksize, fees, miners leaving, etc  that are just noise and a few whales throwing weight $600USD is about 4000CNY, and both will be a huge resistance/support level

I think we will see it hit a low of ~$580 in a few day's time, when we can see how many miners dropped out and if there's any signs of the feared (and virtually impossible) "death spiral". If 20% leaves, blocks will get longer, fuller, and we will have more fee pressure as the miners look to replace the subsidy's lost value

I plan to HODL because we are bullish longer term, and any halving crisis would simply be a bear trap. I closed my longs at $640 (from $625) and have a bunch of buys set up in the $580-610 range to catch the knife

that how margin trading works

FYI they have a block for sale on the site that has >26BTC

is it too hopeful to think they will auction 420,001? https://blockchain.info/en/block/000000000000000004db7eebf333b81f2529835102f7f7e86eca889287148885

just that site. actual coinbase was 12.51BTC