0) General information + Hardware Needed
1) Unpacking
2) The Miner
3) Install
4) Conclusion

0) General Information + Hardware Needed
This miner is an little machine that packs a punch.  With it's long sleek design and use of the Spondoolies-Tech RockerBox ASICs you have a miner with a lot of potential.  It could be arguably the miner with the most versatility.  Let it use it's power and be able to be pushed to speeds of up to 1.7T or under clock that same machine to 700-800 watts and get over 1.2T! (Credit to philipma1957 on under clock info - https://bitcointalk.org/index.php?topic=872014.msg9843564#msg9843564 )

Hardware needed in addition to SP20 miner.

• Standard power supply with 4 PCI-E 6 Pin adapters (Suggested 1200 watts or bigger)(*With it's amazing under clock some are using a good amount smaller)
• Computer to set initial pool and configuration settings
• Network cables - 1 network cable to go to your network

1) Unpacking
I was very impressed with the shipping.  It made it to the United States in around three day’s of shipping.   The box shown below was made to take a beating.  The SP20 is packed with cardboard stratigaclly placed to keep it from ever being touched in shipping.  



2) The Miner
Below are images to showcase the miner.




3) Install
The install is very easy.  You will need to install the 4 PCI-e cables to a proper power supply for your settings.  I am using a lightning 1300 in the case of this install. Next use that network cable to connect your miner to your network. You will receive a miner with DHCP enabled allowing it to connect to your network no matter what IP address range you use.  


They also have a very nice feature with the following web address it shows the Spondoolies gear on your network - www.myminer.io .  This is shown below it is a very nice feature if you are not using static IP's.


4) Conclusion
The SP20 was the perfect miner to put in my new mining area.  It is very cold and the miner endures single digit Celsius readings.  I am able to run at the around high 1.6 – 1.7T. It ran perfect in the cold and I had no issues with temperature. Noise was not a issue with my mining area.  The duct fan was actually louder then the SP20 but it is not something that you will be mining with in your living room (unless underclocked and fan is turned down).

I cannot stress the asset of its versatile over and under clocking.  Right now with the crazy mining prices I am much more worried about getting the higher end of the miners ability.  With decent priced electricity I can worry about hash rate alone.  In a few months I will be worried about efficiency and will be using the great under clocking ability.

I want to thank Spondoolies for a great product.  I am happy to try to answer questions if you have some.  With wanting high hashrate and operating in the cold hopefully this review will have a slightly different view.  I was lucky enough to meet Spondoolies in The North American Bitcoin Conference in Chicago.  I can say they are just as pleasant to talk to in person as they treat customers online.

As far as antminer auto restart there is https://bitcointalk.org/index.php?topic=596178.0 .

I have not used the auto feature in it but it should do it for you.   

That is the lowest I have seen.  Wow that is a impressive under clock.

I don't know how S1 is but some old miners require proxy on PC to run or get high reject rate.   I had only experienced it on old scrypt miners.

https://www.nicehash.com/index.jsp?p=asic

They ship miners worldwide.   Don't know your customs exactly but I'm sure the big companies know the procedure.  Biggest thing is if you pay a VAT.  And also your electricity price.

There is not really a great usb asic.  Prisma's would have been the modern one but they did a buy back.  And the thumb drive miners are novelty.  I hope someone comes up with one but I don't know that there is a great usb controlled one right now.

I would suggest saving up and possibly looking at the SP-20 they went down on price.    It has long term mining with underclocking. But is above price you mention.  

Great review from a legend.  And also that is one heck of a 360 Dogie.

Bitwisdom:

Bitcoin Difficulty:    40,007,470,271
Estimated Next Difficulty:    39,416,015,999 (-1.48%)
Adjust time:    After 74 Blocks, About 12.4 hours

Will be interesting once paycoin mining is done what this does.

If you look at their site it shows this.  They show being able to use the coin in a debit card like way linked to account.   You could spend anywhere almost.

If it all happens no one knows.  But lots of speculation, especially on price.

Is it still working and the leds go off?  Or are you saying that the module stops with the leds and lose function of it?

Best advice treat the private key like gold.  Put it on a usb and paper wallet.  Put those in a safty deposit box or other safe places.  Treat them like money as they are money.

You can get physical wallets aswell.   One example is my sig campaign I'm in put so much BTC in a account and put the paper wallet in the silver wallet, and store it safely.  Other options are like trezor that is a hardware based.   You have lots of options if you want a wallet such as these.

Pro's it will get you USD so you are not dealing with BTC up's and downs.  Con if you sell all your coins for USD you lose a upside when bitcoin goes up.

I don't think there is a whole lot of con's.  You can decide how much you want in cash or btc. 

Look at buying SP20.  Has lot's of underclocking possibility. 

You will need to buy from someone such as SP, Bitmain, etc.   You really can not make your own asic.  You can buy them and grow, but as far as "building" it would cost more then what you can buy from manufacturers.

What is your electricity cost?

Also you need to know power how much you have, and how many circuits.  During summer count on a AC bill and doing less gear.  In winter if lucky have free/cheap cool air and can use it.

So main things you need to know electricity cost, amount of electricity, and heat removal.  This will help see how ROI will go.

With using the core you are have a LOT of downloading the chain.   Does your wallet show out of sync? (Still downloading showing weeks and days going down).

If it is still downloading the chain it will not see it till much later.  It could take days depending to get entire chain synced.

With being so new you most likely will need to do escrow on some sales.   It would be possible in digital goods as said for you to sale.

If you are able to connect to it through a different network it says to far right side once connected:
Hostname
    miner-xxxxxx
MAC address
    xxxxxxxx
Hardware Version
    SP20E Jackson
FW Version
    2.5.33
CGMiner Version
    cgminer4.7.0
CGMiner Status
    Running
MinerGate Status
    Running

*I put X on a few things to not show mine (Probley was not needed)

So if you can get to it on another network you could easily get the mac address and use it on the network you want after.

Paycoin does promise a lot after looking at it.   Wow it has pushed mining up in what your revenue is.   Great time to be a miner.    So many say you cannot ROI as a miner guess more in it for us.

If I convert all of my US Dollars savings into Bitcoin, what are the chances it will loose value?
It is more risky bet then most fiat currency.  You will have a large variance compared to USD.   Some times it can be good other times ... yes it can be bad.


What if my employer paid me in Bitcoin? Can I avoid the illegal income taxation by the IRS?

Illegal income taxation?  Not sure what you mean by that.     But if you were paid by employer you should have it on your taxes.   Not listing payment by employer is not good in eyes of IRS no matter what form of currency you get paid in.

How much does mining paycoin compare to BTC on amount mined lets say per T?

(I could not find a good calculator)

They do have a heck of a good team!  I really love their support.

If running at 40 percent I think you will need to under clock during summer for sure.   Not a bad thing since it does under clock well.