alibaba is basically ebay/amazon for bulk chinese products. excellent source of generic quality goods for almost everything.

A large amount of the noise from the SP10 comes out of the PSU, particularly at highest speeds.

heres my advice:

1) use 200-250V power when possible. this is probably 10% quieter than on 120V
2) set the system fans to the lowest possible so that the exhaust temps are <70C. if undervolting you can go <40% using ssh.
3) undervolt. running at 100-400GH slower speeds can reduce power consumption by 150-500W


If you want the minimum noise, this is the best way:
use 200V+ outlet.
use SSH, login (root,root), and type:
hit enter.
in the file, press 'i' (enters insert mode) and change the file to:
. press 'esc', type ':wq', and it will bring you back to the ssh main terminal.
In the web browser, click the 'restart minergate' button on the main page and wait the 30 seconds. it should drastically drop in volume.


this will limit the system, causing it to run at about 1050-1100GH/780-840W and is about the slowest speed at which the device is stable. you may see one or two chips disabled on the stats page. if more than ~4 disable, change the file so that instead of 625mv starting, its 628mv. you can also go lower if you want a bit more efficiency, but <610 the system might try to reboot if too few chips initialise correctly. at the stats above I get 1090GH/810W and is reasonable for use in a basement or behind a closed door.

replacing the fans wont make much change, since the majority of noise is the PSU fan (its like 20mm or something insanely small)

^id advise against it. the original firmware works fine, and if you have any issues in the upgrade theres virtually zero tech support on the gen1 gear.

he wasnt scammed - sounds like the unit is working fine and as long as its >170GH then theres nothing to really worry about. set it and forget it works best

oof - thats very high. perhaps a local courier or fedex can do <$150

what price would you be looking for to sell 10 units near M6K Toronto? CAD payment preferred

first - try with a different browser. you never know...


1) do a full reboot (pull power, turn off psu, give it 5-10 seconds before booting
2) do #1, but hold down the reset switch for a few seconds when the power is off and as you turn power back on
3) do a firmware upgrade/restore

@SP-Tech: any plans to update the SP10 firmware beyond 1.5.8 (or 1.5.10 TEST)?

I feel like i'm missing out on scheduling and lower fan settings (a 20% or 30% setting would be nice for underclocked units and save dealing with SSH) - amongst other little tweaks that have one into the SP20 and SP3x series recently.

asic stats page shows which chips are working/not working/missing (o, x, - respectively)

beyond that, no.

this? http://www.amazon.co.uk/Artic-Supply-Featuring-Floppy-PCI-Express/dp/B009S9832Q

multi-rail power supplies suck. this one has 4 rails, each with a max rating of ~380W. depending how you plug your miner to it, you could easily be placing the entire load on only one rail and thus it trips

I bought 6/$2400 and paid ~$200 for import. I mined with them while trying to sell, and eventually sold them for $450-550usd each

unlikely. most of it is in washington, powered by hydro dams.

nuclear power is generally built close to the cities it will power. hydro dams are often located a distance from any major populations due to the steep terrain and large rivers/streams they need to create power. Its reasonably common for the cheapest electrical rates (and thus datacenters) to be found near these facilities in otherwise largely-undeveloped areas

I've had pretty great experience and roi.

Mining has paid for $2000 worth of electrical installations, pdus, and power supplies.

Selling hardware at the right time(s) has given me good profit. For example I bought a bunch of sp20 units, mined with them for about a month or two, then sold them at 10-20% more than the original cost.

Just this month alone, I made almost $1000 (or ~20%) by flipping hardware on the local markets.

that makes no sense. a bitcoin miner is no different from an electric space heater, and both produce 1w of heat for 1w of power usage.
however, a space heater might better distribute the warmth


edit: realised pages 2 and 3 of this thread are almost exclusively filled with confusion over electricity->heat. theres no magical physics that causes computing power to somehow NOT produce heat. the results of a computation are not a form of energy - the energy is turned to heat in the process of hashing, but does not somehow send 1w into the internet with every share.

Dogie is right - 99.99% of energy used is directly translated to heating the room holding the bitcoin miner. whatever energy leaves as noise/light/vibration will be converted to heat through its interaction with the air/walls/floor.

+1

its probably going to drop 5% today and find support around $255-260. after that it could push back upwards. later this week it may break $280, $300 will arrive quickly after

IMO theres about a 20% improvement possible via a good redesign. maybe even 30% if the new chips can run at <0.6V. another 10-20% improvement might come from improving the voltage regulator design.

I doubt they will be able to do better than 0.3w/GH @wall with a 28nm design, and that would be near the lowest hashrate. at full speeds 0.5-0.6W/gh is likely

if using rockerbox that would mean about 20-30TH depending on the number of chips and their voltages (likely 25TH)

using a gen2 28nm would probably result in 10-20% more hashrate/watt. using a 20nm or 16nm would improve efficiencies by about 2.5-3x

I have a lot of dully-modular supplies. The EVGA can be paperclipped directly at the back of the PSU and you wont have a fat 24pin cable getting in the way at all

I doubt you will see that sort of density if the chips are rockerbox chips.
My guess is that an SP100 would use 100 chips (The SP3x series has 30 chips). thus my above estimates were all based on 3.35x the specs of an SP3x unit. its unlikely we will see them go into much greater power density than the SP35 achieved. Its possible an SP100 could fit in a 6U size format though while still achieving ~10kw/16TH at peak, or ~6kW/12TH at lower settings.

0.013% is very low error rate. (granted, its higher than the 0.0008-0.003% usually seen in the S5)

as suggested by phillipma, if the error rate doesnt increase over time theres really no concern. 0.013% is pretty insignificant, its a difference of pennies/month at the most

If an SP100 comes out thats ~8U, 10kW, 16TH I would be able to operate 1-2 of them. Its definitely not bulk, but it would be a practical size for the serious (ie: >$5000 investment) miner since it reduces on the cost of using multiple controllers and shipping boxes to otherwise ship 3-4 SP3x units

@SP-T: Would be nice to see a clever upgrade path given for old SPT equipment, namely the power supplies. For example, a 750W PSU that could swap out with the 1050W PSU in an underclocked SP10 miner. that 1050W could then be used in newer gear like an SP100.