Topic: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 453. (Read 1260350 times)

I didn't mean to be confrontational or adversarial. I just think that free air cooling is cheaper and more capable than you do, and thought you and others would find it helpful if I explained why.

Also, I want to go further than 60 kW. If people think it can't be done, or if they think there's no reason for it to be done, then it won't be. If Spondoolies or someone else can build the load, then I can cool and power it.


Space is cheap, but electrical wiring and air ducting are not cheap. I've been writing a lot of five-digit checks for electrical equipment and work recently. Electrical work cost is related to the number of separate connections that need to be made and the number of meters of distance of wiring that needs to be done.If you need to bring power into a lot of different places over a large area of your building, that ends up costing a lot more than bringing a lot of power into one very small place. (This is actually the main reason why I don't want to deal with Antminers right now.)

Yes they are easy to set up, basically plug-and-play.

Any bitcoin hosting datacenter will manage to do it without instructions and you can also do it yourself without specific mining knowledge.

Again, just pm me your local power rate and I can work out if hosting would in fact be cheaper.


The difficulty isn´t setting the unit up, it is having a pretty much dedicated site where higher noise levels 24/7 will not hinder anyone from sleeping and it doesn´t get stolen.
The sp30 is datacenter-optimised and as such will be quite cheap to host.

There are other miners on the market that are better suited for home deployment, but they are generally not as power-efficient as the sp30.

Sounds good.

Are the SP30's easy to setup? Would it be a simple plug and play hardware? And how is the customer support like for assistance?

Yes, this is accurate. Thank you, dropt.


Nope. Just air. Overpressure on the intake side helps too, though. In my installation, the cold aisle is just the open space of the DC. Intake fans placed anywhere on the building's outer wall or roof are sufficient to produce this overpressure. It might be hard to close doors, but I think we can manage.

You generate negative pressure by using really big fans, like these: http://jtoomim.org/files/biggest_fans.jpg. You generate positive pressure by using fans, like those, or the ones in the evaporative coolers. Nothing complicated about it. Sealing most of the holes is important, though, but that's really not hard to do. You just have to make sure that most of the open surface area of your containment structure for air to pass through is through miners, and most of your airflow goes to miners.


Not at all. I'm already doing this. I looked at the numbers, and decided that building my DC this was would be cheap enough to do it without even being sure there would be a benefit from having such excessive airflow. Cooling equipment is a small portion of our overall budget, even with enough airflow for a ridiculously low delta-T. Electrical work is most of the budget.

Caveat: I don't know if this system is going to work as well as I envisioned. We'll know in a week or two.

As someone who used to live in the UK and did the odd bit of ebay buying internationally: I dont think there's duty on UK import.  You do get charged VAT by DHL. 
I have found some of the shipping companies charge you a fiver on top for the "service" of collecting the VAT fee off you.


Right.  I have some SP10 I bought and they are hosted I think in Israel.  I think they have multiple hosting locations in different countries.

I think also if you pick out your own 3rd party hosting they presumably will ship it direct to your hosting co.  For US and some other places there is no import nor sales tax/VAT hit on import of computer equipment, so it can be worth it just for that if you live in europe with the dreaded VAT.

Or maybe in UK you can voluntarily register for VAT, claim the VAT back, and sell the bitcoins without charging VAT (because they are now VAT exempt).  You'd have to research that one a bit

Adam

- You don´t have to pay duty, but you do have to pay ~20% VAT to DHL (they then send that money to the relevant authority).
  
-Very similar to normal hosting e.g for a server, you pay the hosting company to provide power, space, cooling and internet access for your miner.
 So yes, the miner runs from their own site and you own and control it.
 Once you decide to take delivery of your miner, you can tell them to send it to you. (or to another hosting provider, a buyer of that hardware....)

Please keep in mind that the hosting offered by spondoolies is not meant to be a permanent solution, as it is quite costly.
There are datacenters all around the world that take sp30s, and they are usually cheaper.

You do not have to decide to have your unit hosted right now, you can still make changes in September.

Thank you Collider for the fast reply.

Going back to the points..
- So when the item arrives in London I don't have to pay duty to DHL?
- If i'm paying VAT do I pay that to DHL or my local accountant.

- In regards to hosting. Does this mean that when I purchase the item they will not send it to me.. They will run it from their own site and mine for me?
  Please clarify this. Thank you

- If I ordered the item next week would you still ship the item to me in September? -yes if the september batch hasn´t been sold out yet
- Do you accept bank wire payment from London - yes, sepa payments are available
- How is the on-going support if there are any damages while shipping the item to London -90 days warranty period (also covers psu defects and other unlikely problems)
I'm asking this because I had a miner shipped from China which came damaged and then could not refund the item.
- Can I plug the miner into the normal UK power supply? 240v? Or will I need a step down transformer? -240V is datacenter standard and is in fact recommended for the sp30
- Does the item come with warranty? yes, see above
- What is the cost of the duty when the item arrives in London? -no duty, only your local VAT
- How long will it take for the SP30 to come to London? -2-3 days from time of shipment (dhl express delivery)
- If there are any faults after delivered will you take the item back under your own shipping costs and repair the item and send it back all inclusive? -covered by warranty
- Finally when I go into the payment section it's asking whether I want hosting too? What is this hosting for? -if you do not want or have the ability to host the unit at home, this might be a cheaper option for you

You can also choose to host the miner at another facility, and have spondoolies ship the miner there.
Hosting might actually be cheaper than running your miner at home (due to higher power costs in the UK +~20%VAT when importing).
Prices for hosting start at around 110$/kW/m and drop until around 70$/kW/m for one year contracts.

Feel free to pm me your local power costs and I can help you find a hosting solution.

Hi There,

I'm new to Bitcoin mining. I ordered a unit from China but it came with many faults to i'm returning it and looking to get the new SP30. I have a few questions which I e-mailed directly to the company but received no reply. Would anyone help me with the following questions.

- If I ordered the item next week would you still ship the item to me in September?
- Do you accept bank wire payment from London
- How is the on-going support if there are any damages while shipping the item to London
I'm asking this because I had a miner shipped from China which came damaged and then could not refund the item.
- Can I plug the miner into the normal UK power supply? 240v? Or will I need a step down transformer?
- Does the item come with warranty?
- What is the cost of the duty when the item arrives in London?
- How long will it take for the SP30 to come to London?
- If there are any faults after delivered will you take the item back under your own shipping costs and repair the item and send it back all inclusive?
- Finally when I go into the payment section it's asking whether I want hosting too? What is this hosting for?

Sorry for the overload of questions. I just want to be clear before jumping into this investment.

Thanks,
Charles

@jtoomim

I stated that it is possible (and quite an achievement actually) to cool full racks of sp30s with free air-cooling, so why are you arguing with me?

It is good to see that your airflow numbers seem to match mine. (and that there is a significant safety margin)


I think it would be quite impractical to do even higher densities, as space would be cheaper than the added cooling (aka airflow) on a small area.

It might be possible to achieve even more than 60kW per rack, but nobody needs to do it right now, so why do it?

There isn´t too much in the package, it comes wit adapter cables for PSU (which you still need your country-specific PSU cables for), rackmount ears and the miner itself, all snuggly fitted into a protected cardboard box.

The miner itself is slightly less loud than the sp10, and the noise is less whiny.
(The sp10 is so loud on turbo that you DONT want to have it in your house, unless you can put it somewhere in the cellar)

Could someone post a video of the sp30 running, and maybe an unboxing video?

Electrocution?  
Bird poops on it?

Theft... flooding... condensation... etc

What's stopping people from placing their miners outside, under a small waterproof protection structure or something?  
No noise that you can hear, constant decent ambient temperature without having to buy coolers, etc. It's perfect!

No, it's done by the FW.  jtoomim changed the SP30 FW to pull more from the AC2DC, it worked OK in one socket but didn't work in another, so he had to set it back.

Are you implying that power limits are (or should be) set differently for 120V and 208V/240V?

Thanks for the notice. The power limit for Emerson is now set to 1100W, which is consistent with the 120 limit we seen in our labs and passes FCC. If one does not 'hack' the FW to ignore power limits, one should be OK.

Yes, sorry.  My comment was more meant to be a sarcastic reply to jimmoty's continued shit parade.

While at the same time generating tons of overpressure in the cold aisle using a gas with higher thermal conductivity than air?

I think "tons of negative pressure" are a really hard to realize idea, you would also need to seal off the tiny holes between sp30s and racks to achieve this effectively.

It would mean such high building cost that going with immersion cooling would actually be cheaper.