I have found creeping melt to happen.

lets say we are 60 days into summer. gear is borderline safe wiring.

melted pcie jacks will start to occur.

so the gear worked say

all of  fall
all of winter
all of spring
month two in summer melting happens.

maybe the psu is rated 1600 watts
maybe the volts are 220
maybe the line does 20 amps
your s9 pulls 1300 watts

and creeping melt happens.

most likely volts dropped to 205 due to summer brings amps up and pcie jacks melt.

the l3+ never does this why most likely cause mine pull 725 watts on an apw3+ psu.

uses eight cables for 4 boards each board pulls around 180-185 watts.
each jack does 90-95 watts.

this is a really good safety margin.

yeah i know l3+ is not a btc miner.  but the point i am bringing is a pcie jack at 90-95 watts is very good safety margin..

for a btc miner to run rugged it needs to not tax wires due to voltage drops.

new gear right now i guess the heater from russia. under 800 watts.

the s17pro set to low.
should be safe on 10 amps and 220 volts.
that is about it.

If you want to home mine in usa.  You want a 800 watt miner
The best thing on the market is a home heater it is not really a miner.

this is it:

https://bitcointalk.org/index.php?topic=5152874.0

it does not turn a profit it is primary a heater first a miner second.
it is currently for sale.


The s15  by bitmain set to low speed   was very low power use  around 880 watts  It did 47 watts a th.

No longer made by bitmain  you need to find used ones.

There is a market for a s17 LN model with 2 boards.

27 th at  900 watts at a low speed setting is possible

It would sell at a premium price  people would buy it.

Air cooled


msi  1080ti   + asus 1080 +zotac 1070 rig


any reasonable bid under 725 with free shipping to usa

SOLD


Plug n play mobo cpu  ram psu    all included.


Price on 3 card evga hybrid  now please bid  under $550.00.  I will consider any fair offer under 550


 USA sales only I will ship for free



 For 3 hybrid card rig plug in play simplemining os

 1070 1070 1080

evga hybrid rig

my home was built in 1970/1971. all aluminum wiring. due to copper shortage from Vietnam war.

So i rewired it in the 1990’s .  I was a hifi nut 🥜 so I did all code or above code.

No 14 gauge.  Only 12 or 10 gauge. Got lucky as my home is easy to run gear as I have three extra 30 amp circuits 240amp.

My problem Is winter power is 13.7 cents reduce to 10 due to heat benefits.

Even with all that It is not very profitable to mine at home.

Now the idea of space heating yeah I can justify some of that.
Prepping gear to bring to clifton i can justify.
But i do not think 🤔 Home mining ⛏ will ever be feed by asic builders like it could.

bitmain is the winner for me in 2019
room runs 70-90f. every

s17 pro good. 16 of them
t17.      good.   2 of them
t17e.     good.  2  but pulls 3300-3400 watts way over spec.
s9k.      okay.    4. 1 drops out now and then.
s15.      good.   1
t15.      good.   1
t17+.    good.   1

27 pieces feb 2019 to dec 2019. various run times.  just kept adding them month by month.

For 2019  Whatsminer was okay for me..   But I have not ordered much from them after my July delivery.

The prices rose and the preorder time went far out.

No 2019 builder was  truly perfect for me.

Bitmain was almost.   about 23 good and 3 so so .

next would be cannan  3 good 1 so so 1 bad

then whatsminer   7 with no issues 4  with issues.

inno was the worst for me.  1 good    1  so so  it was late and pulled lots of power.

Op is long gone.

 So was it a troll?

A newbie that gave up in disgust

or a clever way to start a thread SO SIGNATURE'S GET PAID

Oh well we will never know.



Op and I are the only ones with out a paid signature campaign.

I offered to review it.

Standard terms.

If you want btc  send the gear upfront.

If I like it I will  buy it.

If I don't I will send it anywhere you want.

If you want upfront payment I would only send paypal.

They never really got back to me. So I let it be.

From what I understand :
It is a space heater that mines .
It is not a miner that  is a space heater.
So if you need a space heater it has value.
If you do not need a space heater don't buy it.

Big plus

1)  you can mine to an address and hodl the coins for a few years.
2)  if you use a space heater at work  this should be good for you.

so I see you use this psu.

https://www.trcelectronics.com/ecomm/pdf/lrs150.pdf

that is a meanwell lrs-150-12

159mm by 97mm by 30mm

it is 87% efficient

I used many meanwell psu's

IIRC  they have a 91% efficient model

The Hrp is 88% at 12 volts same size
https://www.trcelectronics.com/ecomm/pdf/hrp150.pdf

I need to do more research.  But I do like meanwell psu's as they are easy to source.

Lets wait and see how it plays out.

Looks terrible on the surface.  Maybe it will be just that terrible.

Yeah but my 2x 17e are crazy on power draw over 3300 watts.
In terms of meeting power specs  they are the worst units I purchased in all of 2019.

So to me the idea that the fans run high is not surprising.
To be fair I don't have any s17+ units to compare to.

If the s17 pro had a s17 LN pro version

two boards with bigger heat sinks it could sell.

28th.  low 850 watts
34th.  medium 1400 watts
38th.  high 1800 watts

I think 🤔 it would be a hit.

Some would use it at home.
Some would use it at data centers.

Here in the states most home miners don't have cheap power.

A s17 pro  at 53 th pulling 2250 watts.  uses 54 kwatts a day at 10 cents that is 5.40 in power cost.

It earns 7.66  the net = $2.26

Very marginal but doable if you need it to heat home 4 or 5 months a year.

We could say home mining is dead in usa.

Or not.  But with out much other choice for a home miner With 10 cent power a risky move at best I would say yeah it is dead.

Yeah the only really good new home miner is the s17 pro set to low speed.

It is quiet
burns under 1400 watts set to low.

I have the bigger spot with a lot of 3000 watt units they scare me. 
We use every thing correctly  proper wires proper cooling proper air filters still make me nervous.

Modded s9's set low are good to heat a home.

But you would think a s17 variation burning 1000 watts or so  would be desirable.

The s17 pro is pretty good for a home miner.

The a1046 is pretty good for a home miner.

but that is about it.

sidehack has a 1tb miner which can be some fun for people.

I got permission for this thread to help each other deal with bitmain coupon refund and credit issues.
I did not delete people trying to buy or sell a coupon.
But I just deleted the three quoted posts. Lets cooperate rather then argue.

I am sending a 41 coupon to favebook for free once bitmain website is back up.

Website is up I sent a 41 coupon to favebook. free of charge.
Bitmain has squared up for me.
Maybe I will use the last 140 coupon next week.

Going to lock this now. As most are settled and square with bitmain.

I am going to hold my 140 10 % coupon as I may buy something and I still have the crazy person that tells me I am a crook and did not give him a coupon after he paid me for it.  He never replied to me and has never sent any proof of paying for that coupon. But i will hold it a bit longer. Since he may show me some money sent.

He actually sent me a threatening pm over this, but that has no point being here.

Do you really want to be banned?

If you do simply do some plagiarism that would get you banned.

Personally I like you and I liked a few of your posts.

Sorry this has become a bad experience for you.