Have tried asking the european repair shops listed at Zeusbtc website?

https://www.zeusbtc.com/RepairCenter/

You are the man
Thanks a lot, crystal clear and concise.
Would you trouble to overclock them with immersion cooling?
I understand that immersion has to come after 100th day since if I decide to sell there will be no value for them if they are immersed.
 

They would run good with brains +

down clock to 13th and lower power.

or auto tune at 1100 watts a miner.

They simply don't break at 1100 watts and they do break at 1400 watts.

If you can get them with psu's for 300


1 unit doing 12.8  or 13 will earn 3.80 a day before power

1100 watts = 26-27 kwatts or 1.62

so 3.80-1.62 = 2.18 a day you need 138  days.  you could start to sell them at day 100 in lots of 10 if you could still get the 300 for them. it would hasten over all roi.

If I had the power and could afford to lose 90 x 300 = 27k - 15k = 12k I would take a shot.

as I think worst case would be a 10k to 12k loss and a huge fail has to happen to go that bad.

I think you mean the k version is bad not the j

Please read the various s9 support questions about the s9j -- it is a horrible version....

We have reached a point of gear not getting more efficient.

S19pro has 1 speed setting uses 29 watts a th
S17pro has many settings and the vnish set to 39th  gets 25 watts a th.
That is a road block to hashrate growth also missing chips will slow rate.

   In order to increase hash rate you need more power infrastructure.
Mining won't build a new dam as it is costly.
Mining can be leveraged to grow solar arrays.
   I am thinking the next stage will be more solar arrays which were funded by mining.
If so we can have strong growth since a mining farm can say we help the environment as we increase solar footprint and lower carbon footprint
This is going to happen slowly but surely maybe this bull run will be the one that sparks this type of investment off. If so then we can have large hashrate growth as it would be decreasing carbon fuel burning.

 I am not a tree hugger anti coal/gas/oil. guy I look at this from a practical viewpoint. I have seen and help build profitable solar arrays. That would scale 10x even 100x the 125k-watt field we run.

If global warming is real then this is the way to go.
If global warming is fake and the sun is simply a bit hotter then this is the way to go.
Why is that?
Sun will cool and the cheap solar power will reduce and like short sighted morons we have been buying all the coal the gas and the oil.

So either way solar is smart and carbo is stupid as fuck.
We could continue mining coal and storing it just in case the suns drops it's output. And we could be building cleaner coal plants just in case we need to switch back to them.
Oil and gas can stay in the ground for now.

Of course this would piss off gas and oil guys but they had a good run.

Also they purchased tons of solar tech so I am only telling you what will happen in 20 or 30 years from now.

All this relates to mining diff since mining will not grow without power. (40,000x the power for a gpu to a s17pro) Those power savings will not happen again.  Maybe just maybe 10 watts a th is the best we will ever see.

Taking the 1/2ing into account would make 2020-2021 15.5T to 42.8T = 176%

In the 1st quarter of 2019, Bitmain had a revenue of >$1 billion. At $2500 a miner, that would be 400,000 miners in a single quarter. So between all the manufacturers, I don't think it is that far-fetched to think we're going to hit another 100% increase.

I can help you with the numbers and then feel free to play with them as you see fit, I will only go back to as far as 3 years ago, as I believe values from previous years are very, very different and probably make little to no sense today (in fact even values from less year make little sense, but do hold a lot more weight than the old era when a thousand S9s would make a whole lot of difference)


Difficulty values from 15-2-2018 to 15-2-2021




Percentage representation of each adjustment of the above values:



Simplified figures:

Feb 2018 to Feb 2019 :

2.8T to 6T = 114.29%

Feb 2019 to Feb 2020

6T to 15.5 = 158.33%

Feb 2020 to Feb 2021
15.5T to  21.4T = 38.06%

Keep in mind that the last year had the halving event, so the easiest thing to assume here would be doubling that increment, so it's more like 76% rather than 36%, I believe with a very high probability that the trend of difficulty will keep rising regardless of price, but will rise a lot slower than it used to.

It can't do 114% like 2018, can't do 158% like 2019, and can't do 76% like 2020, so maybe 50%? this will take us from 21.4T to maybe 32T, 50% of the current hashrate is about 80EH, each 1EH is 10,000 S19 pro, so 80EH is 800,000 S19/S19 pro, just about a million mining gears, I would be very surprised if we could go beyond that.

Historical difficulty has no effect on future difficulty, to the extent that using history to suggest what will happen in the future would be far from accurate.

Some people like to say there is a hard link between price and difficulty.
Clearly the past few months have proven how wrong they all are

There are a number of factors involved, and most of them cannot be predicted with any accuracy:
1) Availability of new miners
2) Electric price
3) Electric availability (e.g. in china there are seasons each year)
4) BTC Price
5) Availability of old miners to simply be turned back on
6) Availability of old miners for sale at reasonable prices
7) Scam price of old miners - and those stupid enough to pay them

No doubt some can come up with more factors.

Two of the above have their own whole random list of things that affect them
1) and 4)

Alas the only thing you can guarantee, is that BTC price and difficulty will go up, down and sideways, but with a long term trend of going up.

i hope you got them.

Bulk sales have been always everyone's favorite, especially when both bulk and small pay the same, even better when the bulk buyers pay in advance, dealing with 1 client with 30k miners is a lot easier and cheaper than dealing with 15k clients for the same 30k miners, it's common sense.


It used to be easier back then, nowadays with these massivly funded whales, i bet your order total needs to be a couple thousands of gears if you want to sit down with their sales manager.

Riot alone has an order of over 30,000 miners, and they will receive the last batch by October 2021, this is one company out of the many large industrial-grade mining orders that hit Bitmain in late 2020, Bitmain staff and robots are probably working 24/7 but there is only so much they can do, the production of mining gears is capped by chips production from TSMC, large companies like Intel, AMD and Apple can hardly get enough chips for their production, Bitmain, and the other mining manufacturers are the "small fish in a big pond".



Nobody knows, but we know it's very unlikely to be before September, I mean even if they re-stock next month, chances are you won't get the gears until the end of September, and that is being very optimistic, the Aug batch was sold in no time, I am pretty sure Bitmain only put a small portion of their products for the public as a "courtesy" to its small clients, but with whales like Riot joining the mining industry, small miners will be ignored and your will only option would be over-paying the resellers, which isn't something you want to do before thinking twice 10 times.