Antminer S7 Review - Read Before Buying it! | BitCongress.org

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Founder of Bitmain Rival Held by Police Over Possible IP Dispute

Zuoxing Yang, founder and CEO of Shenzhen-based bitcoin miner maker MicroBT, is being held by local police to assist an investigation, CoinDesk has learned.

The investigation is likely over allegations of intellectual property infringement by the firm related to the technology of its rival Beijing-based crypto mining giant Bitmain, according to one source close to MicroBT with knowledge of the matter. The news was first reported by Chinese crypto news source BlockBeats.

The source confirmed to CoinDesk that Yang was taken away by local police at the end of October – after the unexpected return to Bitmain of Jihan Wu, co-founder of the firm. Wu seized control of Bitmain last week by ousting the company’s other co-founder and then-chairman Micree Zhan.

Yang was formerly processor design director at Bitmain, responsible for developing the firm’s flagship AntMiner S7 and S9 models around 2016. However, he left the company and raised over $20 million to found MicroBT – which produces the WhatsMiner range of mining devices – after discussions with Zhan and Wu for stock options fell through.

Bitmain has already sued Yang and his company in 2017 over alleged infringement of a patent that Bitmain was granted for bitcoin miner-related technology. In 2018, Yang’s legal team successfully appealed to a court in China to have the patent revoked, after which the case was dismissed.

https://www.coindesk.com/founder-of-bitmain-rival-held-by-police-over-possible-ip-dispute
submitted by FastSellerService to BitcoinInfo [link] [comments]

Regarding Threads on Bitmain and ASIC Resistance (Mega Thread!)

Guys,
Let’s take a minute to talk about what’s going on. We need to make sure all users are on the same page and the falsifications and assumptions stop.
I'm with you, and I understand that you feel betrayed. However, cleaning up after the constant bickering for those pro-fork and those anti-fork is growing tiresome. It's time we have a civil discussion and talk about facts.

Timeline of events

On 03/31/2018, a user from Ethfans.org posted a video on Telegram of a supposed Ethash ASIC. The video made its way to /Ethermining in a thread. It is important to mention that these values can be modified by changing “get_miner_status.cgi” and “minerStatus.cgi” and that there has been no credible evidence that has popped up in the nine days following the release of the supposed leak. Additionally, the following abnormalities should be noted:
Also on 3/31/2018, a user on Russian site Bits.media noticed that the pre-order for the Bitmain E3 was already up. It was believed to be an April fools joke; needless to say, it wasn’t.
On 04/02/2018, Bitmain launched the E3 and began taking pre-orders for a June delivery. At that time, the price was $800 and promised a hashing power of 180MH/s at 800 watts.
On 04/06/2018, Ethereum core developers decided against hard-forking Ethereum at this time, as they weren't convinced that it would positively impact the community given a hard-fork's disruption and the unknown of how the ASIC worked (specifically if it was programmable). The community became upset over broken promises of ASIC resistance, and this has since spread to a full out finger pointing of who is wrong.
On 04/08/2018, an apparently forged photo showed up showing a higher-hashing ASIC with far less power consumption. This is not only very unlikely, but the link in the photo was gibberish, whereas the E3's link was valid. We're writing that one up as FUD.

The "ASIC Resistance" Argument

At this point, I think that it’s I think it's important that we visit some key points of the Ethereum project. A lot of people have been quoting the whitepaper, calling ETH ASIC-proof and implying that the developers do not care about the problem.
In actuality, Ethereum never promised that it would be ASIC-proof, merely that it would provide an economic incentive to be resistant to the development of an ASIC. I'd like to produce a quote from the Ethereum Wiki, found here.
Ultimately, perfect ASIC resistance is impossible; there are always portions of circuits that are going to be unused by any specific algorithm and that can be trimmed to cut costs in a specialized device. However, what we are looking for is not perfect ASIC resistance but rather economic ASIC resistance.
...
The problem is that measuring an economy in a secure way is a difficult problem. The most obvious metric that the system has access to is mining difficulty, but mining difficulty also goes up with Moore's law and in the short term with ASIC development, and there is no known way to estimate the impact of Moore's law alone and so the currency cannot know if its difficulty increased by 10x due to better hardware, a larger user volume or a combination of both. Other metrics, such as transaction count, are potentially gameable by entities that want the supply to change in a particular direction (generally, holders want a lower supply, miners want a higher supply).
This is solidified by revisiting the whitepaper, specifically the section which identifies how ASICs will be economically stymied:
This model is untested, and there may be difficulties along the way in avoiding certain clever optimizations when using contract execution as a mining algorithm. However, one notably interesting feature of this algorithm is that it allows anyone to "poison the well", by introducing a large number of contracts into the blockchain specifically designed to stymie certain ASICs. The economic incentives exist for ASIC manufacturers to use such a trick to attack each other. Thus, the solution that we are developing is ultimately an adaptive economic human solution rather than purely a technical one.
So with the Ethereum team providing only an economic reason to not develop an ASIC since the beginning, there has been no lie.

Second batch of E3s will not be profitable with Ethereum

As a response to the developers announcing that they are not initiating a hard fork, Bitmain raised the price of the second batch of E3s to $1800. With a PSU ($105) and shipping costs ($225), plus duty fees ($25). That brings each E3 up to $2,155, or $11.97 per MH.
Comparatively, this is like paying $300 per GPU ($1800) plus Mobo/PSU/risers ($355). I have built rigs with similar hashrates for under $1,900 ($10.50 per MH).
If we speculate that Casper is as close as we think (see below), coupled with the rising difficulty, the second batch of E3s are not likely to break-even with Ethereum as a whole. If ETH rises to its ATH, the second batch units may be profitable. Tis the risk of mining.

Current speculation:

  • ASICs are bad!
    • In the Ethereum mining community, ASICs to be viewed as a formidable commodity, when they should rather be viewed as a tool. Tools are never inherently good or bad, but how they are used can be, and some developers intend for the coin to eventually be used with an ASIC. Some coins, such as Sia, were designed to specifically work with an ASIC. > 51% centralization is bad.
  • Bitmain has a better ASIC.
    • Probably. But this is an unknown. Speculation of an ASIC is not a reason to fork the second largest cryptocurrency.
  • Bitmain will be a cause for centralization
    • Everything should be a concern for centralization. Hell, early miners can be a bigger concern. The principals of economies of scale still apply to mining; so those who started out with a lot of GPUs are heavily mining. I've set up warehouses full of GPUs for clients, so if you think some of the guys here are big shots, I promise you there are larger concerns for the current state of centralization.
    • I will also note that yes, we will need to worry about a mass-manufacturer of just ASICs, especially if they are pumping out > 30,000 units per month at the current rate. But the firm that uncovered Bitmain's ASIC, Susquehannah, claims that there are at least three other ASIC manufacturers out there. This puts some silent competition on Bitmain.
  • Ethereum is not as centralized as Bitcoin
    • You'd think that, and the goal of the whitepaper was for Ethereum to be less centralized as bitcoin. It even mentions that "three mining pools indirectly control roughly 50% of processing power in the Bitcoin network." Ethereum is in this state already. Ethermine controls ~28% of the network hashrate, F2pool has ~17%, and SparkPool has ~15%. Arguably, the Ethereum network is in a more sensitive state.
  • Casper is right around the corner.
    • This has been speculation for some time now. Developers confirmed that testnet should be fully operational by August, meaning that we may be able to expect PoS hybrid by DecembeJanuary assuming everything goes as planned.
  • Dev team does not care about miners
    • In the project's current state, miners are a necessity. Remember that seigniorage must be sinigicant enough for miners to continue mining, otherwise, the network would slow and we'd have another Crypto Kitties incident on our hands. Until Ethereum is PoS, you are valid.
  • Dev team wants to get rid of miners
    • Well, yeah. That's what PoS is about. Ethereum will not be Proof of Work forever and that needs to be appreciated.
  • We should fork ourselves into an ASIC-proof currency
    • Do it! Take some initiative and work up a team, I'll be happy to help and support in any way that I can, including pointing my hashing power your way.

Ethereum decision governance

Right now, large decisions are made by the Ethereum core developers. This last decision to not hard-fork was not well received by the community. It feels to be almost an "electoral college" kind of deal, and that's something that has upset a lot of people. Is this the topic that we need to discuss in more detail?

So what is this thread?

For now, this is going to replace our weekly discussion for a few weeks until everything calms down. The sub is in a volatile state and everyone is slinging FUD at everyone else. We need to clean up and calmly discuss our position on the matter at hand. This means:
  • No more fighting about the ASIC in the comments
  • OUTSIDE OF THIS THREAD, please do not shitpost. Meaning, no more strongly worded threads about how you're out of mining completely because of the ASIC, or how the developers screwed you over because ETH was supposed to be ASIC proof, or how people are whining. I'm deleting threads left and right for people who are just using the sub as an outlet to name call on both sides.
  • As always, constructive threads are welcome, but shitposts are to be confined to this thread, please.

We all have different opinions

I am going to remain neutral on this topic. I mine with both GPUs and ASICs, and I've worked with countless numbers of people who do as well. We need to cooperate as a community instead of tearing each other apart over the issue. Let's think before we post and keep comments constructive.
Happy mining!
  • Rob
submitted by Robbbbbbbbb to EtherMining [link] [comments]

Cybtc Review: Bitmain Antminer S15-28TH/s

Cybtc Review: Bitmain Antminer S15-28TH/s
Bitmain is a technology company specializing in high-speed, low-power custom chip design and development, successfully designed and produced a variety of ASIC custom chips and integrated systems. Bitmain was founded in 2013. In the same year, it launched the first generation bitcoin mining machine of the ant mining machine series - Antminer S1. After more than five years of development, the antminer series bitcoin mining machine passed S1, S2, S3, S4 Iterations of multiple models of S5, S7 and S9, the latest bitcoin mining models are S15 and T15, which will be sold on November 8, 2018.

The Antminer S15 adopts a new 7nm chip process. The official evaluation of the S15 is durable, energy saving. Emphasizing the characteristics of "high performance, more durable, and more power saving". From the officially announced parameters, the Antminer S15 is built in. Standard and low-power mining modes. The officially announced parameters have a unit-to-power ratio of 57J/T in standard mode, and the unit-to-power ratio of low-power mode has reached 50J/T. Compared to the products in the current market, in terms of Bitcoin miners, this unit power consumption ratio has set a new record.

Antminer S15 official parameters,

https://preview.redd.it/9fgwfaqp6bd21.jpg?width=1015&format=pjpg&auto=webp&s=8239da7bcece1abb80f1fb56708e02fa111a150b

Recently, the Antminer S15 has sent to Cybtc for testing. Please see the third-party independent review by us.

I. Unpacking:

Because the Antminer S15 adopts a new all-in-one and parallel fan design, the packaging box has changed from the previous generations. The previous cuboid has changed into a square-like style. The packaging material is still packaged in an industrial carton, and the box is marked manufacturer information, logistics warehousing logo, mining machine specification model and strip identification code, outer box size: 486*388*265, weight about 8.7kg.

The interior of the two pieces of styrofoam is firmly packed in the box from the upper and lower sides to ensure the safety of the mining machine during transportation. There is also a gap around the pearl foam for easy access.

Take out the styrofoam on one side to see the main body of the mining machine. The mining machine is wrapped by an anti-electrostatic bag. Compared with the box, the mining machine looks very small and only takes up about half of the box space.

The Antminer S15 changed the style of single-tube with double cooling fans as S1-S9 models, and became a dual-fan parallel single-side air intake and adopted the integrated machine design of the mining machine + power supply. The whole machine size is 279*175*221mm, weight 7.13 kg.

https://preview.redd.it/k0xp89yy6bd21.jpg?width=640&format=pjpg&auto=webp&s=5504d958a4cc6fdb1c01783b777e60483ea7ef9a

The Antminer S15 is small and neat, the air inlet side and the mining machine interface side are on the same side, the fan is removed from the air outlet side, and a honeycomb-shaped baffle is used.

https://preview.redd.it/ex187jf27bd21.jpg?width=640&format=pjpg&auto=webp&s=e8210c514e186dae075d9b986f7682a49141aa6a

The advantage of the all-in-one design is that the wire connection is reduced. The appearance of the mining machine is more compact, and the use and operation and maintenance are more convenient. The connection between the Antminer S15 mining machine and the power supply uses a clip-connected design, and the controller and the power board are still connected by flat signal cable.

https://preview.redd.it/85cz4u4c7bd21.jpg?width=640&format=pjpg&auto=webp&s=ab87c2f4c2943f0e9eb3dbbe2576f9d043add399

The nameplate of the mining machine body is marked with the model number, hash rate, and identification bar code. If the bottom part can increase the anti-slip mat, it is better to strengthen the stability of the mining machine when it is placed horizontally. The mining machine supports the erect and horizontal two ways. On the rack, the miner can choose the placement method according to the size of the mine rack.

https://preview.redd.it/wxavyize7bd21.jpg?width=640&format=pjpg&auto=webp&s=5ab2335eabb3b13731284f89805abcb131bfbda4

II. Antminer S15 installation:

The design of the Antminer S15 all-in-one machine reduces the link of the power line of the plugging and unloading machine. As long as it is placed in the rack, plug in the power cable and the network cable to complete the hardware installation.

Find the mine IP address. Antminer S15 mining machine is automatically assigned IP mode, you can enter the local router to view the IP address named "antMiner".

Or use the ant official mining machine management software BitmainMinerTool to scan the IP address of the current mining machine. You can also use the management software to set the mining pool address and worker name, update the firmware, etc. When the number of mining machines is large, you can also use the mining machine. IP report button to find the IP address of the mining machine.

To view the real-time status of a single mining machine, you need to enter the mining machine control page. First, enter the mining machine IP into the control page home page, and then enter the default user name and password (the default is root) to enter the mining machine control page.

The new mining machine needs to modify the name of the mining pool and miners, click on the “Miner Configuration” page to modify the main mining pool address and worker name, and modify the two alternate mining pool addresses and miners' names as needed. Antminer S15 has built-in standard and low-power mining modes, so you can easily select any mode mining on this page according to your needs. After each setting is completed, click “Save&Apply” to save the settings and apply.

After saving, the miner will restart the mining procedure. After about a few minutes of normal operation of the mining machine, you can enter the mining operation interface “Miner Status” to check the operation of the mining machine, including running time, hash rate, Chip status, operating frequency, PCB board and chip temperature, fan speed and other parameters information.

III. Review:

The Antminer S15 has standard mining mode and low power consumption mode. Therefore, we tested the two modes for 24 hours respectively. The test environment temperature is about 17 degrees, and the noise value is around 36 decibels.

https://preview.redd.it/2wzornwmabd21.jpg?width=640&format=pjpg&auto=webp&s=62e6e57755d70d526eeda4066a31b042473871a8

After the mining machine is turned on, the fan runs at full speed, the power consumption of the boot is about 25W and further increases slowly, and the noise level is up to 81.2 dB.

Standard mode test

Power consumption: The miner's chip is fully operational, and the control page power is 28T. The measured power consumption of the miner is 1610-1620W, which is in line with the officially announced 1596W ±7% level.

Noise: Due to the low ambient temperature, the number of fan rotations is basically stable at around 3120 rpm. The noise value of the operating environment is measured to be 76.5 decibels. The distance of the mine is 27.7 meters, and the noise level is properly controlled.

Temperature: Antminer S15 has a total of four mining boards. There are four temperature-sensing modules distributed on each calculation board. The chip temperature is at least 44 degrees and the highest is 78 degrees. Thanks to the Exposed Die package, the outlet temperature is about 42 degrees. The power outlet temperature is about 28 degrees.

https://preview.redd.it/h71plzf0bbd21.jpg?width=641&format=pjpg&auto=webp&s=588728e6a87b510d5cc65eb41a1ffe80d6435f17

Because the Antminer S15 adopts the one-piece design, We also test the contact temperature of the power supply and the mining machine's power board. It can be clearly seen that the temperature values ​​of each point are different.

https://preview.redd.it/4ghcl4i3bbd21.jpg?width=990&format=pjpg&auto=webp&s=a344917e4a3b529aef58127f5e5c8fdaa61c62fa

Hash rate: After 24 hours test in the btc.com mining pool, the average hash rate of the Antminer S15 in 24 hours was 28.56 TH/s. Thus calculate the unit energy efficiency ratio = 1620W / 28.56 ≈ 56.72W / T, and the official published data 57 J / T consistent.

Low power mode test

Power consumption: After checking the option behind “Low Power Mode” on the Antminer S15 Pool Settings page and saving the application, the miner can run in low power mode. After the power of the mining machine control page reaches 17T, the measured power consumption is up to 836.6W, and the running data meets the official data of 775W ±7% - 900W ±7%.

Noise: As the power and power consumption are reduced, the fan speed is basically stable at around 2400 rpm, the measured operating environment noise value is 77 decibels, and the distance measured by the mining machine is about 66 decibels at a distance of 2 meters. The noise level and the standard mode. At the same level.

Temperature: The four mining board chips have a minimum temperature of 25 degrees and a maximum of 62 degrees. The outlet temperature is about 30 degrees, which is slightly lower than the standard mode. The temperature of the power outlet is about 20 degrees.

https://preview.redd.it/r4f2ww96cbd21.jpg?width=641&format=pjpg&auto=webp&s=ae3051c74634ac9d98373d71e8fee3f542d455c5

Contact point temperature value between the power supply and mining machine mining board.
https://preview.redd.it/fskmubi8cbd21.jpg?width=990&format=pjpg&auto=webp&s=a1616d21af2b87bc0996f1ce388b3ab9983d33dd

Hash rate: After 24 hours of testing in the btc.com mine, the average 24-hour power was measured at 17.5TH/S. Thus calculate the unit energy efficiency ratio = 836.6W / 17.5 ≈ 47.8W / T, lower than the official published data 50 J / T.

IV. Summary:

Two built-in mining modes. The power consumption per unit of power in low-power mode is lower than 50W/T, which is better. The lower the power consumption ratio, the lower the price of the shutdown.
One machine design reduces the wire, beautiful and convenient.
Exposed Die package improves heat dissipation, increasing the number of chips per unit volume and reducing heat sinks, reducing overall weight.
The new AWP8 power supply is used, easy to assemble and disassemble.
The machine noise is lower and the temperature is lower than other mining machines.
The calculation power of the whole machine is stable and fluctuating.

Finally, exposed power connectors may cause problems if touch the iron on the shelf. Maybe it can have improvement.

The Antminer series mining machine has evolved from S1 to S15, and the computing power has evolved from S180's 180G/360W to S15's 28000G/1600W. This is not just a digital evolution, but also the ups and downs of the Bitcoin industry. The mining machine is upgrading. Bitcoin is advancing, leaving many stories in the chain, the currency circle and the mining ring than the ten-year journey of holding the currency. In the two-year life cycle of S9, S9's bitcoin mining machine market share is far ahead, and currently in the market background of the rising bitcoin computing power, the depressed bear market and more new mining machines, Whether the ant S15 can create a new benchmark for the bitcoin mining machine, time will give us the answer.

More miner and crypto reviews on: cybtc.org
Telegram:https://t.me/joinchat/LgPYnE1vPpXqYDVpPaQyxw
Discord:https://discord.gg/RfCZMNY

submitted by cybtc to BitcoinMining [link] [comments]

antminer s7 power supply issue.

I just bought an antminer s7 (probably not a good idea given my inexperience, but its done now...) and I plugged it into 3 different power supplies (all 3 are this model ). However, when I plugged it all in and turned it on - nothing. not even a light, no fans on the power supply, no nothing. I am pretty sure that everything is plugged in correctly (I followed this guid ) and I am wondering if you have any idea what could have gone wrong.
I would really appreciate anything you can share me. Thanks - Zoe
submitted by zoelee4 to BitcoinMining [link] [comments]

[CAN-ON][H] Quiet Antminer S7 [W] Cash or BTC

$400 Canadian.. Ebay seems to be averaging $350USD for these plus shipping with less efficient configurations.
Great heat source for winter! Quiet as an electric toothbrush at factory speeds with current setup.
This rare Antminer S7-F1 single fan model is up for offer. It shipped to me with a defective fan so I took it upon myself to customize the cooling solution with a special fan and configuration which allows it to comfortably run at full factory speed with the noise level an electric toothbrush may make (very quiet).
https://postimg.org/gallery/2gpa97kh6/
This is for the Antminer only. A required 1250Watt or higher power supply to be the buyers responsibility. I will ship anywhere if paid in bitcoin inclusive of shipping fees, but cash purchase in person is preferred in the GTA. Happy to demonstrate and prove performance, screenshots and photo provided above. I purchased directly from Bitmain in China, expensing the duty and shipping fees myself.. the original box is provided to buyer upon sale.
For those unaware this miner is rated to draw about 1200Watts electricity to produce about .0038 bitcoin a day (at current difficulty) when pointed at a pool. At todays rates that is just about $4 a day but bitcoin seems to be on an uptrend so who knows what it will be worth in the future. All it needs is the power supply, an internet connection and wallet address to point payments to.
Wireless internet is possible but I have not played with that option personally.
I have been running this on weekends and evenings for off peak electricity prices but this would only be profitable at current ontario rates for those with solar setups or other cheaper electricity fees.
This doubles as a great source of heat for winter months. The single fan running at 35% load in a room with about 18C ambient runs at 72C-75C at stock frequency of 700Mhz. This can be overclocked reasonably well although i always preferred to keep it at stock rates.
Great investment for the future, used less than 6 months S7F1 was an official serialized model released for one batch only (batch 16) released in May i believe? of 2016. Its really a piece of bitcoin history and I am confident not nearly half of the equipment's lifespan has been reached yet.
Great shape, asics never X out on the status page like my old S3 does if I run it these days.
submitted by smaxz to hardwareswap [link] [comments]

antminer s7 power supply issue

I just bought an antminer s7 (probably not a good idea given my inexperience, but its done now...) and I plugged it into 3 different power supplies (all 3 are this model ). However, when I plugged it all in and turned it on - nothing. not even a light, no fans on the power supply, no nothing. I am pretty sure that everything is plugged in correctly (I followed this guid ) and I am wondering if you have any idea what could have gone wrong.
I would really appreciate anything you can share me. Thanks - Zoe
submitted by zoelee4 to Bitcoin [link] [comments]

12-10 23:33 - 'Lets have a discussion about energy consumption in bitcoin mining and what that means towards the carbon footprint today.' (self.Bitcoin) by /u/Cryptolution removed from /r/Bitcoin within 1-11min

'''
There was a [very good coindesk article in July 2014]1 that broke down the carbon footprint of the bitcoin mining network. At the date of the article, our hashrate was 146,505 TH/s. Now that we are at above 13 exahashes/s this represents a 94 fold increase hashing power.
[Here is the cost breakdown chart from the coindesk article]2 .
As you can see from this image, the carbon footprint of bitcoin in 2014 is a tiny fraction compared to the carbon footprint of the traditional banking system. Yet at a 0.78 Billion per year cost in 2014, at a 94 fold increase of power that would now be 73.32 billion, which would make bitcoin 9.52 billion more in electricity costs.
But this is trying to extrapolate data in a non-accurate way. In order to understand why this is inaccurate, we must look at how all of this technology works and how technology has scaled upwards while decreasing electricty consumption.
The bitcoin network at 13 exahashes is roughly 130 times greater than the largest super computer (Sunway, 93 petahashes per sec in china, see [top500.org]3 )
So when you make that statement, you think "wow, bitcoin must use a lot of energy to be 130 times more powerful than the largest super computer network!"
But, its not apples to oranges. These super computer networks are non-specialized hardware (comparably to bitcoin) in that they have generalized computing capabilities. This means that these systems require more standardized hardware so that they can preform a large amount of different computing functions.
So, for example, the largest Sunway supercomputer @ 93 petaflops (roughly 1/130th the power of the bitcoin network) preforms its calculations at 93,014.6 petahashes @ 15,371 kW = 93014000 Gh @ 15370000 watts. Doing the maths, this comes out to a 0.16524 W/Gh.
The AntMiner S9 currently operates at 0.098 Gh ....so nearly double the energy efficiency of what the most powerful super computer network in the world operates at.
You have the Dragonmint miner coming out Q1-Q2 in 2018 which uses 0.075J/GHs ....a 30% efficiency increase over the Antminer S9.
And next year japanese giant GMO is launching into the bitcoin mining business, stating they will be releasing a 7nm ASIC design, which is more than double the efficiency of the current 16nm design the Antminer S9 uses. This will mean a more than doubling of energy efficiency. They said they have plans after the release of the first product to research "5nm, and 3.5nm mining chips"
So, what is the point of understanding all of this? Well, you have to understand how technology scales (think Moore's law) to understand how we can achieve faster computational speeds (more exahashes per second) without increasing the carbon footprint.
So if you look at a proof of work chart, you'll see it has scaled linearly upwards since the birth of bitcoin. And it would be logical to assume that the more hashes per sec thrown into the network, that it would equate to more power being spent. Yet this is not true due to advancements in ASIC chip design, power efficiency, and basic economic fundamentals.
You see, as new miners come out, because they are more efficient, people can run much faster mining rigs at much lower cost. This immediately adds much more hashing power to the network, which decreases the profitability of old miners. And to give you an idea of how much more cost efficient these are, lets look at Antminers products.
S9 - 0.098 W/Gh
S7 - 0.25 W/Gh
Avalon6 - 0.29 w/Gh
You can see the S9 is 3 times more power efficient than the Avalon6. That translates to "It costs 3 times more to operate this equipment". That aint no small difference.
These differences, combined with energy costs are what forces miners to stop running old hardware and to upgrade to newer models or exit mining completely. So as new mining equipment hits the market, old less efficient mining rigs go offline. The amount of hashes per sec continues to climb, yet the actual power usage of the entire network does not scale at the same rate that the hashes per sec scale at, due to increased energy efficiency.
The question that I would like to see answered by the community is this -
What has changed between now and 2014 in terms of total watts consumed? How can we calculate the real carbon footprint of todays bitcoin mining network compared to this data from 2014?
What equipment was running in 2013-2014, what were their W/Gh and how many of these machines do we speculate are still running vs more efficient mining rigs powering the network today? What is the Th/S differences between these mining rigs, and how much more power do we contribute towards the network today because of these optimized rigs?
Mining is not my specialty and there are going to be many people here who are better suited to tackling these problems.
I think these questions need to be answered and articulated because these are questions that im starting to see a lot from the mainstream as criticism towards bitcoin. I know the generic answer, aka "Bitcoin mining still uses a fraction of the cost that the entire global banking system does", but we really need to do better than that. We need to examine the different power types used in bitcoin mining -
How much of bitcoin mining is from hydroelectric? Nuclear? Wind? Solar? Coal? Natural Gas? What regions contribute the largest hashing power and can we evaluate whether these regions are Hydroelectric, Coal, Nuclear etc dependent?
If we are to articulate effective arguments against those who naysay bitcoin over its carbon footprint, then we must do so with good data to backup our positions.
Hopefully the numbers above are accurate/correct. Honestly only spent a few minutes doing napkin math, so I expect there to be mistakes, please let me know and thank you very much all.
'''
Lets have a discussion about energy consumption in bitcoin mining and what that means towards the carbon footprint today.
Go1dfish undelete link
unreddit undelete link
Author: Cryptolution
1: https://www.coindesk.com/microscope-conclusions-costs-bitcoin/ 2: https://imgur.com/a/eKipC 3: ww**top500*org/*ists*2*17/11*
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

[Toronto,ON][H]Bitmain Antminer S7 [W] Cash or Crypto

Asking $400 Canadian.. Ebay seems to be averaging $350USD for these currently, plus shipping and with less efficient configurations.
Great heat source for winter! Quieter than a microwave so great for any room, and this bitcoin miner generates valuable coins that will be an investment for your future..
This rare Antminer S7-F1 single fan model is up for offer. It came to me from china brand new but with a defective fan so I took it upon myself to customize the cooling solution. It comfortably runs at full factory speed at about the noise level an electric toothbrush (very quiet).
https://s24.postimg.org/m9zormhz9/timestamp.jpg
https://postimg.org/gallery/2gpa97kh6/
This is for the Antminer unit only. A required 1250Watt or higher power supply to be the buyers responsibility. Two smaller supplies are frequently used which is also acceptable.
I will ship anywhere if paid in bitcoin inclusive of shipping fees, but cash purchase in person is preferred in the GTA.
I am happy to demonstrate and prove performance, screenshots/photos are provided above.
The original box from BitMain China comes with the unit.
For those unaware this miner is rated to draw about 1200Watts electricity to mine at 4.8TH/s and produce about .0038 bitcoin a day (at current difficulty) when pointed at a pool. At todays rates that is just about $4 a day but bitcoin seems to be on an uptrend so who knows what it will be worth in the future. All it needs is the power supply, an internet connection and wallet address to point payments to.
Wireless internet is possible but I have not played with that option personally.
I have been running this on weekends and evenings at cheapest off pear electricity rates but the real value of this unit is for those with solar setups or other cheaper electricity fees.
This doubles as a great source of heat for winter months. The single fan miner running at 35% load in a room at about 18C ambient runs at 72C-75C at stock frequency of 700Mhz. This can be overclocked reasonably well with minor noise/fanspeed increases although i always preferred to keep it at stock rates.
Great investment for the future, used less than 6 months used, S7F1 was an official serialized model released for one batch only (batch 16) released in May I believe? of 2016. Its really a piece of bitcoin history and I am confident not nearly half of the equipment's lifespan has been reached yet.
submitted by smaxz to CanadianHardwareSwap [link] [comments]

Seeking angel investor(s) to start 45 PH/s mining farm

We are seeking $18,925,000 from a group of angel investor(s) that want to get into bitcoin mining.
We have property that can handle 13MW of power, of which 12MW can be used for mining, with the expenses for electrical cost under $0.03 USD KW/h. The electricity company requires a substantial deposit of $675,000 based on 2.5x the monthly average usage of $270,000.
With the announcement of the new ANTMINER S7 we can achieve 45.0+ PH/s.
We can have a complete build-out done by mid-November, and we have made a deal to place the miners in a hosting facility until the build-out is complete. This hosting is about 2.5x more than our costs, but given the time frame, should bring an additional $2,500,000 before our build is complete.
We currently do not have a business plan written as this does not fall under a conventional BP model. We do have a P&L spreadsheet available for potentially serious investors, and we plan to have a BP in place by the first week of September.
Based on a Bitcoin target price of $210.00, if we could complete funding by the end of September, we would reach a break-even point just prior to the bitcoin halving mark of July 2016. This is critical junction, as we want to remain profitable past the halving mark, and be fully prepared for the dramatic hashing power increase of the next generation machines.
It is imperative that we get started quickly to avoid the halving, so the break-even point does not extend into the halving point.
Legal
Some statements contained in this document or incorporated by reference into this document are forward-looking and involve uncertainties that could significantly impact results. The words “believes,” “expects,” “estimates,” “anticipates,” “will be” and similar words or expressions identify forward-looking statements made on our behalf.
You should be aware that this investment has a risk of losing your capital. The amount of risk varies with each type of investment but in the very worst case scenario this can mean all of your capital is lost. If your attitude to risk is that you are not prepared to take any risks with your capital you should instead consider investing in a guaranteed return investment.
We intend to use the net proceeds for our operations and general corporate purposes not limited to purchasing all necessary equipment, permits, deposits, payroll, and any unforeseeable expenses.
Neither the Securities and Exchange Commission (USA) nor any state or governmental securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete.
NOTE: We have spreadsheet information available on google docs, for serious inquires.
submitted by LVSwany to BitcoinMining [link] [comments]

Altcoin mining on a PS3?

I barely use my ps3 anymore, and I was wondering if perhaps I could install Linux on it and mine altcoins? The bad news though is that it's the original "fat" model (60GB Hard drive version) bought the very first day the mall opened it's doors and the ps3 was for sale. I've heard this version does not support Linux, but I could be wrong.
Anyways I don't really know much about cryptocurrencies, other than the fact that bitcoin mining isn't profitable anymore unless you live in Venezuela and use an Antminer s7.
I don't plan on making a living from this or anything, more of a fun experiment, I just don't want to lose money while I do it, lol
Any suggestions on either altcoin or the ps3 to miner conversion? Is it worth it?
Thanks!
submitted by ZPERO to gpumining [link] [comments]

S7 Antminer secret to sound & noise reduction Bitcoin Antminer S7 explained How to setup Bitmain AntminerS7 Small Bitmain Antminer S7 Bitcoin Mining Farm How to setup Antminer S7 - Part 1 - Unboxing and connecting to PSU

This Bitcoin miner is another powerful server by Bitmain with key specs very similar to the top item in our list – Antminer S9. Also, the cost to get T9 differs only little with that of S9 model. Here are some of the features of this miner: Network connection: Ethernet (cable not coming with the product) Operating temperature: 0C to 40C Bitmain Antminer S7_LN-2.70 Model S7-LN Bitmain Bitcoin Miner W/ 2 Fans. Posted by johndough on November 6, 2019 in Latest ASIC Miner with No Comments Yet. Bitmain Antminer S7-LN on sale now: Bitmain ANTMINER S7-LN + 1000W GOLD 110V PSU 2.7TH/s BTC. $425.00 End Date: Wednesday May-13-2020 15:39:17 PDT The S7-LN only draws about 700W, and the PSU has excess capacity even when the unit is working above its default 600M frequency. It is recommended that the S7 should be used with the 1600 Watt APW3 power supply. This power supply is said to be very efficient as it loses only 7% of electricity between the outlet and the miner. Asic Miner Bitcoin Miner WhatsMiner M3X 11.5-12.5T/S Better Than Antminer S7 S9 WhatsMiner M3 With PSU For BTC BCH Model #: L113-JP144 Return Policy: View Return Policy Antminer S7: Getting Started. Now to make your job of looking for a miner easier, we are going to review the much talked about Antminer S7 in this article. Antminer is a brand name, fairly popular in the world of cryptocurrency mining, that caters specifically to Bitcoin mining ASIC hardware.

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S7 Antminer secret to sound & noise reduction

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