They are not loud if you downclock.  I would say medium vs loud.  At 70 and 80 settings they are loud.

 My fan is set to 40 on the one I have.   my sp20 uses only 730 watts and 1300gh   this is about 0.56 watts

they are also in the  attached garage  so sound isolates from my living area.

I am trying to find the lowest  settings I can do on this machine.

 Reminds me a lot of running GPU's back in the day. Underclock saved a ton of power and heat.

  we will pop it very soon and then come back with one right away .

then you are not "new ".  you have access to a high end place to mine with cooling and venting. my bad to use the word new

the sp30 will burn 2500 plus watts to get you your 4,5th

the sp20 wiil burn 760 watts to get you 1324 gh---- underclocked

if your server room can handle the 2500 watts  the noise and the heat go for it.

PS on top you are very clever you know! Or as Vincent used to say aren't we clever!

we are deep into this diff period block 1900 or so out of 2016

you can read my difficulty threads. they list 3 different predication sources.

future predications can be based many ways. the actual number comes from block rate 1 block per 10 minute is the goal.

so if the network is growing and has normal luck it will solver faster then 1 every 10 minutes... so now over the last 1900 blocks we have averaged almost exactly 1 block every 10 minutes.  so growth  of diff is really close to 0

sent a pm to you

this is the psu

http://www.amazon.com/gp/product/B008G9MX48/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1


it runs  the 1 unit well


only has pcie  2 wires so if you want to run gear more you need adapters.

I suspect you could run some more gear with it if you know what you are doing.

but this setup is designed to mine 1 s-3 very well at freq 237.5

here is the evga   1300 on sale


http://www.amazon.com/EVGA-SuperNOVA-1300G2-ATX12V-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1417478266&sr=8-1&keywords=evga+1300

 there is a rebate offer for 15 that ends today brings it under 170

well I have one in hand .

One shipping and in Germany

One marked shipped no tracking.

this will give me 3 sp20's

I think I should buy one more. Need some more coins.

And it is done just purchased # 4

used  raskul's link

tx id
https://blockchain.info/tx/09eac4c6708a9ee9c63ac570df72f77fc5c899f7521b7500a0536393accaaae1


I will run 4 sp20's and 4 s-3's 

on 3 evga 1300's and 1 evga 1600


should give me  7-8th  and I am done til feb for gear.

Sold

Okay I am in Howell NJ 07731 USA   I am in the process of upgrades to my mining farm.  I purchased 3 sp20's and I am off loading an S-3+  along with a roswill fortress psu.


These are the newer batches that clock better.

I rather you be close to NJ zip 07731 so when I ship it I can ship it cheaply.

so if you want 1 machine that runs well at freq 237.5 and 1 psu that will be able to run it a more efficient  power this is what you want.

this seller on ebay has the best buy it now price for a 'better s-3'  he claims to get 461 gh.  he wants 229 usd for it and no psu.  I will match that price 229 and give you the psu free

http://www.ebay.com/itm/Bitmain-Antminer-S3-460-GH-/181597344697?pt=US_Virtual_Currency&hash=item2a480b93b9


  I want 229 in btc based on coinbase price  


this is about 0.6 btc .   could change at sale price

Don't ask the miner alone the psu alone or any other complicated stuff.


1 miner that does 461 or so

1 psu that will run this miner.

1 cat 5/6 ethernet cable

I will ship free if you are close
send a pm for details and questions.  West coast really costs a lot for me to ship so I rather not ship it to the west coast.

oh 1 psu swtich for the psu.

I will set up your pool and test mine it for you .  I will ship usps priority mail

I am.  and I am also converting s-3's to sp20's on a smaller scale.

6 or more hours later

happens to us all.  why didn't he read the whole Thread.  What is wrong with him.  I know I will say something clever.!!!!

mind you I think every one that goes on the net and posts in threads  


 has
a)   asked what appears to be a dumb question

b) given a snarky answer.


I have done both dozens of times on this site alone.

No harm no foul.


Meanwhile my second one has left Israel and landed in germany.  It is due to arrive in NJ USA on weds. I am waiting for the shipping notice for the third one.

Does anyone want a good s3+ and a rosewill fortress psu. combo.  I will list it on ebay but offer it here cheap. and in the marketplace

yeah whatever it is tomorrow


 -1 to +1  are good numbers coin price is around 381 also good.



numbers are so good the jump will not be on the 1st it will be on the 2nd of dec.

yes  my watt settings are 180 x 4   = 720 watts  well at my meter 764watts  764/1403 = .55 watts gh   fan at 40   almost loud

if I want to do 1700 gh

my watt settings need be 288 x 4 = 1152  at my meter 1210 watts    1210/1700 =  .71 watts a gh  fan  at 80    very loud


I am  a big believer in underclocking asic's whenever I can. 

smart move   by not tossing a ton of money at unproven 14-16nm asics'  

bitfury did this with 55nm  they got very good numbers by redefining design and underclocking/undervoltage of the chips.

I have found in running mining gear underclock/undervolt often rules for profit.

I am still well under .6 watts with the  sp20  about .55-.57 a gh with underclock .  really helps my higher power costs.

Please tell us which machine failed  in your case it looks like you had an sp30 or sp31

as for 2 day delay.  fri and sat they are closed.

I have the sp20 it is very good after 1 week so good I ordered 2 more.--------------I underclock mine to 760 watts and 1324 gh I use mmpool.org to mine

I tested with btcguild and with westhash both good.

It is important to let people know what is wrong and what is right about a company products.

I got it with an evga 1300 g2    right now I am getting 730 watts and 1324 gh.    but this was with the sp20  

Temp Front / Back T,B
33 °C / 69,65 °C
Fan Speed
40
Start Voltage
0.655 / 0.655 / 0.633 / 0.633
Max Voltage
0.664
Max Watts
180 / 180 / 180 / 180


don't do that fan setting  try 60 and in a few hours check your temps

simple answer is 30 amps of 120 v or 240 v     ..

I will do you math for free:

 30 x 120 = 3600 watts    75 % of that = 2700 watts
 30 x 220 = 6600 watts    75% of that = 5400 watts


you want sp20's on sale at spondoolies-tech.

if you underclock   and have 120 volts power you can do 3 units  and pull 2300 watts hash 4th

if you underclock and have 220 volts power you can do 6 units and pull 4600 watts hash 8th


cost = 814 a unit to the usa that counts shipping  so    3 x 814 = about 2500  you need 3 psu's  good ones

 http://www.amazon.com/EVGA-SuperNOVA-1300G2-ATX12V-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1417408332&sr=8-1&keywords=evga+1300+g2   3 psu's are about 550 some  wires a switch a router


so you are at 3050 make it 3100 and you run 3 units doing 4th

or you are at 6200  make it 6200 and you run 6 units doing 8th

 free power and the net for free and cooling free.  


if you do the smaller with your free power

3100 usd in by   dec 2015    you would be paid off and ahead around 1200 usd

6200 usd in by   dec 2015  you would be paid off and ahead around 2400 usd

  most likely the above is conservative .  but If I was to offer consulting advice I would have to say that is a lot of power to get for 'free'   so you better understand that if that power cost 10 cents a kwatt it would be:

  2000 usd  if you were doing the 3 sp20 method
 4000 usd if you were doing the 6 sp20 method

so after 1 year a new startup would lose 800 usd or 1600 usd if you have no parts to start with.

thanks for the info BTW it is much easier that way.

general question I have 1 sp20 right now and 2 on the way.

do they auto set the ip to an empty spot? or do they all come pre-addressed   to 192.168.0.xxx?

thanks here are links to burnt board photos all on bitcointalk

https://bitcointalk.org/index.php?topic=791827.msg9687689#msg9687689
https://bitcointalk.org/index.php?topic=795477.msg9590186#msg9590186
https://bitcointalk.org/index.php?topic=795477.msg9499492#msg9499492
https://bitcointalk.org/index.php?topic=795477.msg9529133#msg9529133

 and  here is a thumbnail of mine with tiles under it. and garage door open to keep it cool.

but to start it it can't be cool so I had to close the garage door let the s-3 warm the area up to start it then open the garage door once it started to keep it cool.  that is finicky