pretty sure seawater doesnt go INSIDE the structure

unless this software is different, thats false.

etereum needs as much system ram as it needs GPU ram, because the DAG is loaded on both. But it only needs one copy in the ram for every running instance (and the DAG is only ~1.4GB, so even 5 seperate ethminer instances would be ~7.1GB of RAM usage)

if you have all your cards running in te same instance of ethminer your RAM usage will only be 1.4Gb (size of the DAG)

there have been plenty of 100+ GPU setups in the past, but even 100 R9-380 cards would only draw ~20kW, which is a drop in the bucket for a facility that can handle at least 10x that much equipment. They would need to run 500+ GPUs to even remotely make proper use of the facility

BUT... if they did, it could be solid returns and resale/liquidation may be much easier than it is with bitcoin ASICs.

1) build a simple, functional, rackmounted system with cheap components (<$200 for mobo/ram/cpu/etc/crappy 350W ATX PSU) that can handle 5 GPUs (powered by a single 1250W server PSU, which they likely have hundreds of lying around from SP10/3x/50). costs beyond the GPU alone would be minimal, at least $50 savings over even the most budget home-made rigs due to bulk purchases and existing infrastructure

2) using either linux-on-a-USB or linux/windows running on a <$20 32GB SATA, set up the software side to start mining on boot and open a teamviewer or other remote-interface program. (remember they designed some pretty good interfaces on the ASIC hardware, a linux/windows remote monitoring app would be a breeze).

3) Replicate the system, with the exact components dozens of times (should take <30min/rig if the OS is programmed right) until you have at least 100 rigs, which could likely be fully assembled and functional by a small <5 person team within a week. They then mine at a decent profit because they pay ~$0.05/kwh, assuming r9-380x tats about $2-3/GPU/day in profit, or about $1000-1500 for a 500-card assembly. Within a year they could be looking at >$200,000 in revenue (after power costs and assuming a gradual decline in profitability), with ~$125,000 in initial hardware costs and probably $75,000 worth of costs related to their lease and minimal income for those involved in the initial assembly and ongoing operations.

notice that's effectively a $25,000 loss after 1 year, assuming that GPU mining maintains profitability. (brief price movements like in ethereum could add another $100,000+ of revenue, making it profitable). They also now have ~$60,000 worth of consumer hardware that could be liquidated without much difficulty, assuming they dont continue to mine for 1-2 more years before the 380 is obsolete.

0.52

0.21

0.21

I was running my S7 in some pretty extreme conditions, drawing -15C cold air, running fans at 20%, 800MHz, and ~5.1TH, getting temps in the 78-85 range (unit stops at 85, not 80) for a few days strght in the coldest part of winter, but with every 1C warmer outside, temps of the unit rose ~1C and i had to drop 10Mhz.

SP-3x series miners routinely have 110-120C temps on the individual ASIC chips, with 70-80C exhaust temperatures.

any chance you have the peeled hologram? might add ~0.1BTc of value to the listing

price is already too high for me, i almost bid around 0.35 and then realised there was a second page of bids XD   guess im appy with te unpeeled coins i still have

I have a box full of S1 fans, but the wire on them is likely too short (its ~10cm long)

if you can use them, let me know. There are about 6-8 of them are sitting unused in toronto and i would sell them for cheap

I frequently drive my S7 up into the 68-75C range in order to keep down the fan noise, and it hasnt been an issue yet as long as it doesnt start beeping at 80C+

has anyone been able to run the SPxx series without the natively-included power supplies?  A while back i tried to put an Sp10 PSU in an SP3X and it just wouldn't recognize it or mine on that board. It would be neat if there was a way to run an undervolted Sp3x on a single PSU (the native one or an external) and liquidate the fancy internal PSUs

agreed. it was like 1.7BTC/TH initially IIRC, when ~1.2BTC/TH would have been reasonable. but noone was forcing people to buy hardware without doing the propoer cost analysis and predicting the price/difficulty movements of the future.

IMO best time to buy miners is when the BTC price is peaking out, or starting to dip. liquidate coins into hardware at a fair price, and watch as BTC value drops, difficulty stagnates, and your hardware preserves its $fiat value. I rode out the $1000->$300 bearish period quite well doing this, and drastically cut my losses in comparison to having simply held coins

or just underclock it by ~50MHz/100w

new method of payout sounds promising, if quite unclear.

my best guess is tat people who opt for sort-term PPS/PPLNS can get daily payouts at ~98%, while those who are comfortable waiting on solved blocks can get weekly payouts at ~102%

worth keeping in mind that it includes two powerful PSUs (at $150 value each likely), so its not purely a $/hashrate issue like with the antminer

theres an x11 coin thats a bit more profitable i think (not by much, its about $1.25-$1.50/R9,270x/day)

why is a single psu ~10% more efficient? If anything, loading a PSU near capacity reduces its efficiency, and PSUs in the 1200W+ range go for a significant premium over those in the 750-1000W range. (you can get a pair of 850W GOLD power supplies for about the cost of a 1300W GOLD, and get an extra ~300W of usable power)

heck, for the price of 1600W psus, you can get a trio of gold-rated 650-850W power supplies and have 30-50% more power available. Of course, it makes for a larger messier rig - but that doesnt matter for some people who have the space or a reduced budget

exactly. bitcoin mining rigs became far less exciting when it moved from GPU rigs -> FPGA towers -> USB clusters -> a stack of sealed ASIC miners

hackjob GPU rigs are my favorite <3

ive learned to not always short the bubble, since sometimes they take weeks to pop, and can even trail higher first.

ethereum as a long list of benefits, but its far less simple than bitcoin. nobody can give you a direct answer for when PoW switches to PoS (before it was said to be july-september, now its being said to happen as late as october-december, if not 2017). Couple that with more 'phases' and codenames (homefront, frontier, etc) than an android phone, and i expect it to simmer back down to the $5-8 range for a while

weekends always have fairly inconsequential jumps/dips, i dont take them into account for trend direction unless it maintains through monday.

i expect within the next two weeks we will see a "crash" into $410-415 range, bouncing off (or just below) the lower trend line, and then pulling back up to $425 again over the span of another week to the point that it breaches the upper trendline and we see the rally begin.

and then its choo choo MF right up into the $600 range for summertime