It really depends on how old the breakout board is. I know for a fact those parallel miner breakout boards are so stiff you really have to jam them on the PSU. As long as you arent disconnecting and reconnecting them so much the pins stretch, you should never have a problem with loose connections. If you buy an old, beat up PSU with an old breakout board that could be a concern.

I have been mining professionally for 3 years, which in this industry is a long time. If you look at PSU ratings 240 is the max recommended input voltage on most all of them so I wouldnt try and push them that high. All of mine are 208 with the transformer turned up a little bit to get as close to 220 at the PDU plugs as possible.

Are you trolling or are you really this dumb?

15ghs of SHA256 makes less than 2 pennies per day. If you have free electricity your USB miner will MAYBE make you $6 per year.

https://www.cryptocompare.com/mining/calculator/btc?HashingPower=15&HashingUnit=GH%2Fs&PowerConsumption=0&CostPerkWh=0.03

S9s are available on bitmains site right now.


https://shop.bitmain.com/productDetail.htm?pid=00020171110160546640l4g92i60062E

No because that Japanese company is full of shit and wont have a 7nm miner out any time soon.

So this program has to call out to a central server? Not something that can be used privately in house?

First off, each L3 pulls around 900w so a Delta 2400w PSU wont be nearly enough to power all 3.

Second, the number of outlets is meaningless for what you are asking. You need to figure out which plugs share a circuit so you do not overload that circuit.

Rather than wasting money and electricity on a step up converter you can just run a single 1200w PSU to each machine and run it off 110v.

Per my experience, stay away from the Bitmain power supplies. They are poorly manufactured and fail all the time.

When you use a quality server PSU, they have many protections built in to protect the $30k server they were originally attached to. If there is a problem with the power they will shut themselves down to prevent damage and most certainly will not pass those issues along to the mining hardware. If something does burn up in the power supply the breaker should trip before any damage is done. Ive run tens of thousands of miners and never once used any kind of in line surge protector.

Examples of the PSUs I am talking about:

http://www.parallelminer.com/product-category/power-supply-kit/

If you buy from these third party sites you get no warranty. Why is it so hard to just buy from bitmain?

What is your target market? How does this scale?

Most monitoring software out there does a really poor job of scaling and has a bunch of useless features that a real farm would never use.

I would be willing to test but I need something that can handle thousands of miners at a time.

It will only make $0.12 USD per day at current prices and you will pay more than that in power. Best bet is to try and sell it to some other sucker that would spend $40 on a useless brick.

USB mining is a complete waste of time. You can make more money by going to a shopping center and looking for pennies in the parking lot.

So pretty much everything the OP said is flawed.

1. Solar is crap for mining. The solar investment to run a single miner 24/7 is insane.

2. You obviously have no clue about where mining farms are, their size, and how they function. While yes, some have gone out of business that is because of mismanagement and failure to reinvest capital back into the business there are plenty more still in business and just doing fine. Also while China does have a large number of farms, there are massive farms in many other countries. I know of a few dozen private farms off the top of my head that are private and not government funded as you seem to think.

3. The average family home in the US uses $200/mo in electricity easy. Nobody is looking at this like it is strange.

4. There is nothing illegal about using lots of power. Mining isnt illegal either. Meaning there is virtually no risk to running miners at home.

5. Mining farms are very profitable as long as you know how to keep build costs down so I have no idea why he says its impossible to make money.

6. Solar is very expensive and there is no solar system out there with an ROI like you claim. Nobody is buying a solar system that can cover their entire electricity usage and pay back that fast because they dont exist.

What are you expecting to mine on these boxes? This sounds like a waste of time.

Filters will most likely reduce airflow and heat up the miner. If they are in your house, try keeping the house clean and you wont have enough dust build up to worry about it.

Your power supply is what should be protecting the miners. This is why you use repurposed server PSUs and not ATX psus that were never meant for high load 24/7 operation. If you have a quality power supply, the only surge protection you need is from your breakers.

This is wrong, please disregard what he said. Evaporative cooling is what a vast majority of large scale bitcoin datacenters use to cool the incoming air charge. In a place that is so hot an dry this should make a large difference. Ventilation is good but if you are bringing in 40c air from the outside its not very helpful for cooling.

The smell of bullshit is strong on that single post account. I hope nobody is dumb enough to fall for this.

You will need to get those ambient temperatures down quite a bit if you want your machines to run in the summer. They dont downclock from heat, they just shut down the miner until you can restart it so you will have a constant battle restarting miners all day every day. You need to get those temperatures within reasonable limits. You want to aim for say 25c ambient intake temperatures if you want these miners to be stable and reliable over the long term.

These are industrial pieces of equipment. They are not meant to be run at home so there are no options to reduce noise. The noise they make is just the noise they make.

As far as hardware reliability goes the list is like this:

1. Avalon
2. Bitmain Antminer
3. Ebit E9


The Avalon will most likely have the longest shelf life. The S9 can run for years if you get a good one and I personally would go with an s9 if you are just planning on buying 1. The Other units are NOWHERE near as efficient.