Topic: How to spend a 100k right on BTC mining farm (Read 299 times)

I have been lazy but I think I could get my t21 to run one board at 120 volts.

I have epic controllers which are really good with the t21

I would need another loki chip but I think it will work..

I am still sourcing a good  psu for that build.

I am also looking to rebuild or mod the chimney design to cool better

no no I understand that - but thats the point I was trying to make... its a very common practice to use 2P breakers. Just figured I'd mention it as most of us know, electricity is NOT to be trifled with. For the amount of money he wants to spend it just seemed like maybe not a bad idea from the safety perspective. Wasn't trying to say he should use larger asics.

FWIW: I love the single board setups - bought 2 pre-fabbed from Altair and built 3 (19K Pro boards). If I had a spare XP lying around I'd have tinkered with that board as well! (inspired by your other post lol)

a lot of the usa have

 hot line 1 120 volts
 hot line 2 120 volts
 ground

the circuit box may allow line 1 + line 2 and give 240 volts.

or not.

From what he says he has spare 24 kwatts at 120 volts for free.

this means he is best off with modded s19's from that use the Loki chip.  he can avoid paying an electrician 1000's of dollars.

I can custom build s19 pro 1 board units  fairly cheap that run on 120 volts.

he can buy them from Altair tech

with only 24kwatts he can't run a lot of gear say 700 th

700 th  is going to earn 35 usd a day with free power or 12000 a year.

are you sure you're working with single phase 120V? Not sure how you'd make a stove/dryer work with that... In the USA - most homes have higher voltage (480V seems to be the standard in my area) coming from the lines which is then run through a transformer which gives you the secondary voltage (usually 208/120 or 240/120).

I'd suggest consulting with an electrical contractor before you purchase anything.

Hey mate... First thing first is your electricity cost... It's only economical if you have access to electricity price of below 0.04$cent/kwh. Otherwise i strongly suggest not to do it!
So let's assume you have that cheap electricity price. Then considering your 24 kw electrical capacity, you very likey be able to run max ASIC OF 6-7.... Although efficiency matters much, but maintenance and the failure risk control is also very important. Cuz you will end up so much in situations that your machines will fail!... So try to increase the number of your ASICs even with sacrificing a bit of their efficiency!
So, for instance, instead of 6 high efficiency machines, i would go for less efficient ones but with number of 12 miners in my farm... That makes it more easier for maintenence and bring higher uptime of your farm, in cases that some may fail!

But the electricity price is still the important factor here ☝️

So you will face a power limit maybe only 5-8 units of gear .

So
s21
t21
L7 are all off limits as they need 240 volts.

you want these

https://bitcointalksearch.org/topic/new-project-a-1-board-s19-110-pro-make-it-a-s19xp-some-photos-to-follow-5485850


The three I built are all 120 volt and use an s19 xp board.

You want them with normal s19 boards.

I could build you the s19 xp version for 1500 plus shipping
I could build you the  s19  version way cheaper

 The s19 version would do maybe 25th at  800 watts cost under 1000 each they would use 120 volt power.

 You could run 15 of them easy. That would be 12 kwatts of power all using 120 volt psu's

Gives you 375 th which earns about  $37.50 a day  $13687.50 in a year.


You power is free  these are not noisy

but the 1/2 ing is coming so they will drop in earnings. (or not as price may go up)

Why not get 1 piece from me and check it out.

where are you located ?

 I am in NJ, USA

@Danileethier

I have free electricity thats why I don't bother to include, and I have a single phase 120v, thanks for replying mate.

@Philipma

I have a house with 24kw and its extra land in the back, I plan to use that piece of land for the mining farm.

I am thinking about adding large numbers of solar panels on the roof to mine during the day as well, I shouldn't have cooling issues because my compound is mostly breezy all the time.

Thanks for the replies.

I built my facility in NYS (Northeastern USA). My power cost is 12.34c/kWh (cost is just under 7.6c but factoring in delivery/tax it comes out to 12.34c - I'd suggest you form an LLC, I used NCAIS Code 518210 which is "Data Processing Services" because without doing so, I was unable to qualify for the industrial power gen rate. It may be different for you but you may need to have an EIN to prove you're not a "residential entitity".)

I would strongly suggest keeping some cash on hand for those sort of "surprise" expenses (I didn't factor cost of huge spools of Cat6 wire/networking equipment/mini-split AC units/dehumidifiers/electrical receptacles, wire concealing pipes, boxes for the receptacles, phase combining breakers, 8 AWG wire spools/FANS (i went to a Restaurant Supply shop in Queens, NY and bought some industrial, louvered, kitchen exhaust fans I framed and mounted in the windows that I use as exhaust outlets)/etc...

The point I'm trying to drive home here is - keep some cash on hand.

All of the miners you've mentioned are going to create a TREMENDOUS amount of heat - and they will need to be allowed to BREATHE.

If 100K is your budget - I'd honestly spend 72.5-77.5K on equipment and keep the rest on hand. Considering the halving is about to clock in - I might honestly just buy BTC with 35-40K, spend 35-40K on mining equipment, and keep the rest as emergency cash.

Whatever you wind up doing - wish you the best of luck and hope you find success!

Edit: I totally missed that you said you want to do this in your HOUSE! What country are you in? Regardless - that is an UNBELIEVABLE AMOUNT OF NOISE and HEAT EXPENDITURE!!!!! I'd STRONGLY suggest scaling WAAAAAAAAY down - unless you've got a barn or some other sort of structure on your property that is not attached to your house - OR.... Rent a warehouse space. My 2 sats! (<- see what I did there? lol... I say that in front of my friends who aren't bitcoiners instead of "my 2 cents" and they look at me like I have 5 heads lmao)

100k and in your home?

the power specs mean everything.

My home is too costly

 14 cents in the winter 17 cents in the summer.

I am allowed a 200amp service single phase 2 pole  120  which means I could do 48kwatts maxed temp.

Reality I can do 24kwatts to mine the rest runs the home and overhead.

24kwatts is 8 bitmain L7 with one or 2 of them set to low setting

cost is maybe 50k for the miners 10k for wires and 2 k for fans.

If you are USA based maybe you can do  a 400 amp service which is 98000 watts.

of which you could use 50000 watts  or 16 miners

that would be 6 L7 = 36k and 10 t21's say 36k so 72k and 14k for wiring along with 4k for fans.

If you want to do that much mining  you want a house with an out building.

In order for anyone to put together a meaningful response, we would first need to know the following:

*  How much is your unit cost (how much do you pay for electricity, per kWh)?
*  What type of supply do you have? Single phase? Three phase? 120V? 240V? What capacity is the supply?

Miners come in various different efficiency ratings (how much energy used to provide 1 TH of computing power). If you have free (or incredibly cheap) electricity and a huge / unlimited supply, it makes more sense to buy cheaper (less efficient) miners. If your electric cost is normal and power available is limited, you will probably be better off with the most efficient miners you can get hold of (current S21 Pro) - or S21 with aftermarket firmware.

Homes are generally unsuitable for bitcoin mining, at least on any scale. Unless you are rural with outbuildings, or live on a farm or a huge mansion, you will probably only have a small single-phase supply which could only run a handful of miners (e.g. 4 or 5 max). They're also incredibly noisy and generate vast amounts of heat. Once you have a bulk of miners, you will have a huge amount of heat to dissipate, this will require heavy airflow in and out of your farm. Whilst you can mount them in boxes and connect ducting etc, this is essentially misuse of the equipment and not how they are intended to be operated. It's also impractical on any kind of scale. Miners are designed to have neutral or negative pressure at the outlet fans, they are not designed to push air through ducting and this kind of use will likely shorten the life of the miner.

You would probably be better off buying $100k of miners and hosting externally IF (and that's a very big IF) you can find a reputable host that doesn't rip you off.

As for Whatsminers - they are brilliant. The only reason I didn't include in my examples is that none of my current suppliers have Whatsminers available. They are not typically as easy to source as Antminers, however (in my opinion) they are much better quality. You will pay more per TH though. Assuming you did have $90k left, today that would get you 21 x M60S 180T. Although the Whatsminers are better quality, I'd be inclined to suggest 32 x T21 vs. 21 x M60S would make you more money in the long-run (even after taking failures into account).

I will like to hear from many new and old Bitcoin farm owners about this, is this a good plan to proceed with? If you are in my shoe right now will you proceed with such plan or you have a better one?

I plan to use up to 100k on Bitcoin farm in my own house very soon and I am looking forward to hire a smart electrician who can deliver a clean job.

Please drop your better idea if you have one.

What Asic miner will be better and more efficient for you? I have read about how reliable whatsminer are compare to Bitmain, is this a valid point?

I read on here that Whatsminer can last longer with zero faults compare to Bitmain and others.

Please drop your guide on here, excluding power consumption I don't want to go the bad route about the best Asic miners that I should buy or avoid.