Yes, temperatures are good in Scotland, but isn´t power at around 0,15$?

I am still in favour of the Iceland modular Datacenter solution, where we just pool enough sp10/30 customers together and get one of those containers.

If you specifically ask for it, these can be cooled by the iceland air to around 5-10°C, and power in Iceland for industrial customers is 4ct/kwh guaranteed for 10 years, so the DC should be able to give us a good quote.

Also, 100% green geothermal energy. (WA state is also ~80% hydroelectric but they wont achieve crazy-low temperatures in the DCs)

@raskul: your unit might be able to achieve even higher values if you change the PSU to the 1250W model.

TURBO mode is the most powerful firmware setting, which can easily be chosen via the webinterface.
It will get the most hashing power out of your unit, with a slight increase in power draw and noise levels (fans run at max)

The sp10´s firmware does dynamic frequency control for every chip, based on that chip´s temperature. This ensures every chip will perform to its maximum without getting damaged.
The lower the ambient temperature is, the higher the chips will be clocking. Very good results can be achieved at normal DC temperatures of around 20°C intake temperature.

Therefore i would describe the cooling requirements as quite reasonable. If you somehow have a facility with free aircolling like a forum member in Scottland, and can achieve 5°C, that really puts the "pedal to the metal".
However, you will typically get very good results with standard operating temperatures.


@wanna4fun: What is your intake temperature (and where is your DC located?)
                    Did you switch the PSU for a 1250W model?

You cant honestly be surprised by Bitmine not keeping promised dates.
It´s the whole "two weeks" all over again.

A quick reminder: they still havent shown or shipped any working Rig design, even though they claim their design is ready for more than a month.

Meanwhile spondoolies manages to fit over 4,2TH/s into less than 4U and everything works perfectly smooth.

The bitmine "engineers" need so much time, because they only get things right on accident.

Dont forget to add a whopping 600$ of shipping cost for Cointerra products.

Furthermore, these rarely run at the full 1,6Th, and draw about 1,25W/GH

Mods: Please delete this if it is too far off-topic.

You might be able to, however it would be an amount of around 1% per month, basically interest on your "loan", and therefore not really worth time and effort.

Again your chances might be higher if clear refund terms are stated in the TOS.

Sadly, this doesn´t apply.
KnC TOS state that you "agree" to be a business and agree to a b2b contract.

It doens´t matter wether you actually run this as a business or not, you will be treated as such.

As to the fraud debate: as stated above it might be treated as fraud by relevant authorities.

However, i see this as irrelevant because in the meantime they will just refund you and get off the hook.

Guys, keep in mind that while this looks cheap, please dont forget to add the cost for PSUs into your equations.
Just add around 35$ for every S1 and you should be fine.

Yes, when you have a B2B contract, it is far easier to sue for damages resulting from late delivery.
HOWEVER KnC have delibaretely set a very big timeframe for delivery (Q1/Q2 14) as to protect them if they ship "late".


Is the acceptable time for a refund stated in their TOS? If not, you could sue them for fraud but they would likely return your money in the meantime, getting them off the hook.

Or get coolermaster jetflo 120, they are 95cfm at only 36 db(a), and only around 10€.

You should definately go with around the same cfm on input and output fans, obviously.

227 m³/h with Scythe Ultra is ofcourse great for airflow, if you have them on both input and output side, and if you dont have to worry about noise, get those.
(That is, if there is 3,8cm of room at the "back", i.e. the side with the PSU)

How much cfm or m³/h do the stock fans have?

How much place is on the "front" side, i.e. the side with the display?

Atleast they have thought about big heatsinks, so little airflow gets wasted, and placing them near each other also helps.

I would advise against ordering these.
They very rarely achieve 1,6Th and the power efficiency is at best 1,25W/GH

I bet you, they will release the funds quite soon after the sp30 groupbuy has ended. If anyone claims to receive the refund within an acceptable timeframe, everyone of their "customers" will desert them.

The Neptune isn´t too impressive, as it will probably not get better power efficiency than 0,8W/GH and in a 4 u formfactor.

Sending the refund requests via registered mail would be the best option, as you can then prove after 30 days that they actually received the request.

Afterwards you can get a court to recognize the money they owe you fairly easily and have a proof that you used your right to cancel.

Bitmine is legally bound to their terms of service, even "more" than they are to standard business practices. (Meaning it is easier to collect)

If you have a court recognize the debt you can fairly easily have them forced to pay and will be able to collect further damages if they delay your refund any longer.


My two cents worth of opinion is that they will simply pay your refund if they see you are playing legal hardball, e.g. by sticking to the normal practices before you get a court to order them to pay.

This starts with sending your refund request by registered mail, as it will be quite easy for them to simply deny the receipt of your refund request if you only email them, or they will use some other delay tactics.
(If the answer "we didnt receive any refund requests via email" will hold up in court is another question, as there are ways to prove it, but you should always make things easy for yourself)

I am fairly certain the shipping companies will demand proof of secure packaging (according to their terms of sale) and wont pay KnC a penny, as this !would smell alot like KnC defrauding the shipment company.

They have specialised teams working to help minimize every penny in reimbursements, and it sure looks very suspicious if every package the company sent out is claimed to be damaged by shipping.

That sounds extremely worrying.

That is like taking boards from the trash container and shipping to customers...

Were the heatsinks only stuck onto the board by the thermal paste?

Well, in the long term when the reward of mining will be a very low bonus on top of the cost of electricity, small changes in mining efficiency will not be enough to justify the purchase of a new miner.

Therefore, my conclusion would be, get an efficient miner now or within the foreseeable future and hold on to it, as soon "new" mining hardware, unless dirt cheap, will not ROI.

How hard can it be to "simulate" handling of a miner by a freight company?

Simply get two interns to toss the package around a little, as every parcel will experience some force on it, simply when going through the sorting machines of any courier.

After a little of that, any Engineer worth a penny would have figured out that the units cant be shipped when built in this fashion.

The new asicminer chip is nice but finished products will most likely have around ~0,8W/GH/s.

This is nothing new, bitfury chips do that since Summer 2013, spondoolies does it in a nice 1,25u case etc.

Granted Asicminer chips have more GH/chip than Bitfury, but finished devices that are rackmountable etc. will take some more time until they are developed.

What it will all come down to for ASICminer is how cheap they can sell chips, which seems to be heading in a good direction.

Bulk chip sales will most likely be the easiest way to get some quick profit, as it also requires little own funds to be invested, as chip design is already done.

Hopefully ASICminer will be able to rake in some cash with this chip and we will then see a nice chip-battle on 28nm by the leading companies in Summer/Autumn of this year.

Yeah, i can only shake my head furiously in disbelief when i hear about KnC shipping and packaging practices, why dont the just put it in a box, covered with foam holders, like when you ship computers?

These things make shipping damage much more unlikely, even if the package were dropped.

Also, they should just put a shockwatch sticker on every package:



It is then easy to prove if the drop force was higher than a 7ft drop, and every uneducated parcel delivery guy knows, he is going to get into trouble if the thing brakes and will handle with more care.
I can tell you from personal experience, since we stick these on our (pricy) audio equipment when shipping it, damages have gone down 80%.

It seems to me like KnC has either hired the intern to manage all their shipping activities, or they simply lack common sense.

Waldo, please explain to the community how you forgot to pay ~30$ back for every share.

In the original thread the wording was value, as in value you got refunded. This clearly states that you have to send us the USD equivalent. Further, the unit was only priced in USD, bitcoin was just the payment vehicle.

The profit on your side at this moment is atleast ~1800$ per miner, amounting to nearly 10K over all the Neptunes.

This is money you took from the community, by not honoring your words, and it looks a lot like fraud to me.

The poll with the options didnt receive a majority on your refund amounts.

In fact the majority was wait-and-see.


Finally, if you want to be consistent, by your own logic you would need to pay back every hashfast groupbuy customer the original order amount in Bitcoin -5% fees, but i bet you won´t do that.
You will again look for the scenario with the most profit on your side, but this is the community you are stealing money from, and this sickens me.

Have you emailed them since?
Normally they only respond to emails.

Ofcourse i cant say what is going on at their facilities, i can only share my personal experience which was on par with the price they took for the order, i had the unit around 5 days after paying in my hands.
Afterwards i had some software issues because the provided sdcard image got damaged somehow.

Now everything is working within the promised parameters, and i got off 10% cheaper than i had with dragonminer.

Keep in mind that this really isn´t the best time to buy hardware, unless you get a really top notch unit or have abundant cheap energy.