I don't see any mining gear with 10 MOQ on hashexpert's telegram?, are you sure you are not being directed to a fake website or something?

Anyway, there is a child board called Group Buys you might want to move this topic there.

If you couldn't manage it, let me know the specific model and the quantity you are looking for and I will try to help you find another trusted vendor who has a lower MOQ.

The reasoning behind this estimation is the sudden appearance of 65EH within two months, I don't think anyone can move that much hashrate from China to somewhere else and have it up and running in such a short period of time.

Also, last year China consumed 7,51 TWh, 20EH is just about 13% of the total energy for bitcoin mining "estimated by Cambridge" which is 13% of 112TWh and that is just 14.5TWh, that is not even 0.2% of how much China consumes, it's really just a drop in the ocean when you think about it.

These are hardly effective, in the past, I have tried all the different crazy ideas that people on the internet talk about, the noise gets reduced, but nothing close to what most people expect, most people think the center of the noise is the miner itself, so they put in a closed box and expect the sound to disappear, the problem is, the noise is generated by the fans which you can't sound-proof, you can run all the ducts in the world, but the noise will still be there.

of course the longer the duct is the less the noise on the other hand, but that will also mean the miner will run hotter, and thus the fans will spin faster, you need a lot of trial and error to get to the optimal temp to noise results.

IMO the best result is the one you get from underclocking your miner, you can then reduce the fans to ass low as 20% to eliminate most of the noise.

Let's do a bit of math and more speculation, back in May China nearly 50% of the total hashrate (before the ban) and the hashrate estimation by then was 170EH, so China easily had 85EH worth of mining gears, the hashrate did drop to almost half in the following months, which did seem like mining Bitcoin in China did actually stop, but there was also a massive drop in price from 64k to 28k, which most certainly forced other miners to shut down, there is no way the 85EH that vanished between May and July all came from China.

The interesting part is the following 2 months, Hashrate went from 85EH to 150EH, that's an average increase of 32.5EH per month, or 325,000 S19 pro a month, there is no way that miners outside of China could bring 650,000 S19 pro or the equivalent up and running in just 2 months, it doesn't make sense especially given that the price in Sep did not make any gains.

This means, there is a huge possibility that the majority of miners did shut down after the initial ban, and them A LOT of them managed to come back online in Aug-Sep, I believe there is at least 20-25EH still grinding in China.

I know I had to announce that a bit earlier, but I always seem to forget, I became a Merit source recently, and I focus primarily on meriting posts in this exact section(Bitcoin Mining).

After Frod left the forum the number of earned merit in this board has dropped, now we are getting back on track, I think there is at least another merit source who is active in this section, so all of the good posts should receive some merit.

I know some of you might not care about the merit system altogether, which is fine by me, however, the only thing that might affect my decision would be each member's interest in the merit system or lack thereof.

If I have 10 merit points to send, I rather send all 10 to someone who is interested in the merit system rather than sending 5 to another good post by someone who does not participate in the merit system, so if I don't merit your good posts, it isn't personal, It's just based on the fact that you are not using your Smerit.

My main goal would be to help newbies rank up (which I believe should be everybody's goal as well) to help them stand out from the crowd of newbies world of spam.

I will be doing my best to distribute the merit I have in the most effienct way, and please, if you see a good post which I might miss, do send me a PM.






  

I see something interesting in the latest study from Cambridge.


source: https://cbeci.org/mining_map

The "Average monthly hashrate share, Aug'21:" is ZERO for China, which we all know is bullshit.

So what happened?

Possibility 1:

Viabtc, Btc.com, and Poolin "lied" about their reports to Cambridge claiming that there wasn't a single mining gear with an IP address coming from China

Possibility 2:

ALL that's left from Chinese miners are now mining behind a proxy/VPN


Possibility 3:

ALL the miners in China were actually shut down.

I am certain that point 3 can't be it, so it's either 1 or 2, my guess would be that there are many miners still mining in China under the radar, the Chinese government isn't the most transparent, and corruption isn't unusual there.


The latest study puts the U.S at NO.1 with about 47% of the total hashrate.

I would love to add a small but very important piece of information, do NOT oversize your MCBs, it comes at a huge risk, the main purpose of the MCB is to actually protect the wire from overloading, some people think if the breaker trips you can just use a large one and all your problems are solved, that is NOT the case.

As for Phill's point, it's true, you do want to account for voltage drops, but IF the voltage drops too often and lasts for enough period of time that doesn't let you run an S19 on a 20A breaker, then your main concern would be the safety of the PSUs themselves, at 210V an S19 will draw 17A, which isn't bad for a 20A breaker since that drop should be temporary, so by replacing it with a 30A (assuming your wire size allowed it) it will run even at below 200v, but then your miners will RIP if that happens too often.

Not so optimistic after all ha ? , to me, we are just getting back on track, the last two difficulty change was just "not normal" with all things considered, so if we get 8% this epoch, or even 10%, it kind of just offsets the previous one, I think +4-8% increase every month will be the norm for months to come.

So, I have a crippled S17 pro that doesn't hash at full speed and it's the last standing S17 pro of my collection, so instead of having to keep watching that gear on the primary pool I use, I "for fun" decided to give Kano.is a try just about a month ago, and Hoorah, I see some fat balance in my account.

The amount this crippled miner made me on this pool is probably 4-5 months worth of mining on another pool (probably more, too lazy to do that math), anyway, this shows that joining a small pool can be very rewarding at times.

Congrats to everyone.

NICE!!!!!! congrats everyone, don't forget to donate a little to the address that Phill manages, we use that to fund the pool server to keep it running.



I am quoting this for future reference, I left positive feedback on your profile, it has been forever since I left any, but you deserve it, 375k worth of coins and you still paid everyone as promised, not so many people would do that, thanks for your honesty.

Not sure where you read that, but that isn't correct, the only thing you need to do when planning on buying Bitmain 17 series is to reconsider your decision because chances are you are going to regret it, I don't want to go into details since this topic is more of "electric setup" but you should really avoid getting those gears.


Ya, he will be limited to a few models, the most famous among those who have 277v is gears that use P21 PSU like the M20 and the M21s, the input voltage of that is 200v-277v, in fact, the overclocking function in the latest stock firmware requires a higher voltage than 240v, which is heaven on earth as far as those folks are concerned, the price of those PSUs, however, is just way too much, it's more expensive than buying two regular PSUs that run at 200-240v.

This sounds so strange to me lol, But I understand why. In my not so "capitalism friendly country" electricity is subsidized, it's super cheap that the peak and continuous load is almost identical, in the summer, ACs will be on 24/7, and in the winter electric heaters are on almost 24/7 too, so when the power company install any transformer or wiring, you never hear them talk about what's peak and whats continuous, it's crazy when I compare the situation here to the other countries.

Also another note, I see people in telegram talk about having 277v, not sure if that's just in the U.S or elsewhere, but that 277v range isn't mining-friendly either, many folks are stuck with 1-2 MicroBT models that can take 277v.

Well, there is nothing special about ASIC miners when it comes to electrical wiring, your friend needs to follow the same set of principles he follows elsewhere, you just have to give him the key information needed to run the miners and that will depend on what type of miners you are trying to put in that farm.

Bitmain gears (ignoring the old models) all use two C13 cables and consume on average 3kw, Whatsminer on the other hand, uses a single C19 connector and consumes anywhere between 3kw to 3.5kw depending on the exact model and the efficiency within the same model.

The majority of these ASIC miners are voltage sensitive, so if you are not sure about the stability of the voltage, you might ask him to install some sort of voltage protectors to avoid PSU damage.

The MCBs / fuses sizes and all the wiring will depend on the code of your country.

There is a bit of misconception in regards to the use of Escrow when it comes to buying a use ASIC miner, no decent and honest escrow will handle such a deal, unless

1- The shipment doesn't go straight from the seller to your address but instead stops at the escrwo's address.
2- The escrow person knows how to properly test all the gears to confirm which is working and which does not.

This creates even further issues because most of the trusted members who offer escrow services here know little to nothing about these ASIC miners and how to properly test them, plus the escrow fees will be a lot higher since they involve unpacking, testing, packing, and shipping to the final destination.

Also depending on the escrow's location, there will be large shipment fees which the buyer needs to handle, so all these factors combined makes buying a used miner either way too costly or otherwise, way too risky.

Uninstalling BO+ is a pain in the ass really, you will need to use their tool to get rid of it, the support team on telegram however are so professional and helpful, they will guide you through the problem, just post all the details you posted here in the telegram group at https://t.me/BraiinsOS.

You can also post in their topic , Artemis3 is pretty active there and he will assist you.

The kernel log is incomplete, please post the whole thing, also, does this error show up right after you start the miner or it hashes fine for a while and then throws this error? most of the issues the S19 pro are related to the power unit, if the voltage isn't stable between 220 and 240 or the PSU is placed too close to a wall or has some hot air close to it it will cause all types of issues.

But to be sure, I need to see the complete kernel log and an image of the status page.

Then download Whatsminer Tool and flash the latest firmware, there is a good chance that it will fix these false temp positives you are getting, you can also join Whatsminer Telegram group here > https://t.me/WhatsMiner, there is more related content and more folks who are experienced with MicroBT gears than we have in the forum since Whatminer isn't really as popular as Bitmain.

There is also a lot of room for improvement in regards to the software level, most of these custom firmware do way better than the stock, getting 10-20% more efficiency out of the same miner isn't something strange, with a good tuning on the S17 pro the difference between it and the S19 pro which uses a newer chip becomes so small, I can't believe that Bitmain does not have the skills that these individual custom firmware devs have, but it looks like Bitmain has not been focusing much on that aspect.

My guess is that starting from the next miner version which could very likely be a replica of the 19 series Bitmain will focus more and more on the firmware to try and squeeze every bit of efficiency they can from those chips.

Would love to hear your reasoning, I do agree that prices are likely to continue going higher to sub 100k without the difficulty being able to catch up, but then eventually the price will crash into a bear market like it always does, in other words, the good part of 2022 will likely be bearish, also, the average difficulty will most likely be higher in 2022 than it is in 2021, which suggests that the overall profitability for miners in 2021 is likely to be "as good as it gets".

https://www.bitrawr.com/difficulty-estimator

+3.5% increase in difficulty so far which should continue to increase, while the price is up about 8% from the opening price of last Monday which marked the opening of this difficulty epoch, at current prices and difficulty an S9 makes $5.7 a day, I still remember buying some of them for under a $100 bucks, they were making below a dollar a day back then, it's crazy how things have changed in the past two years, I wonder, if mining bitcoin will ever be as profitable as 2021?