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1
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:22 pm
Best ASIC Bitcoin Miners To Buy.
The best place to buy Bitcoin ASIC miners is direct from the manufacturers most commonly headquartered in China which has been a leader in the industry of manufacturing Bitcoin Miners ever since ASIC minings existence.
Top 3 Bitcoin ASIC Miner Manufacturers 2019.
EBANG INNOCSILICON BITMAIN.
Buying direct ensure you don't overpay from other reseller sites like eBay. Most ASIC miner comes with a 6-month warranty which is another reason why it best to go direct.
Out of all the companies I just mentioned most of my experience has been with Bitmain as they have been the most popular for quite some time.
However, with this recent new batch of miners released they currently don't make the fastest Bitcoin miner.
Best ASIC Bitcoin Miner Of 2019.
The best ASIC Bitcoin Miner you can currently buy on the market today is the EBANG EBIT E11++ as it can mine Bitcoin at speeds of 44 Th/s while only drawing 1980 watts. It comes with a standard 6-month warranty and is currently priced at $2024 including the power supply.
In case you do decide to buy from one of the other manufacturers check to see if the power supply gets included. Companies like Bitmain require you to purchase their power supply and power supply cord separately.
ASIC Bitcoin Miner And Power Cords.
How To Set Up an ASIC Bitcoin Miner?
Now that you have all the required hardware and location prepped its time to set up your Bitcoin Miner to start earning Bitcoins. The setup requirements from miner to miner are very similar in some ways but it's still best to refer to the manufacturer's installation guide for specific instructions.
Step 1: Connect Power Supply.
The first thing you will want to do is make sure the power supply and all connections coming to and from the power supply and miner are tight and secure. Once the connections are secure, then proceed to plug the miner into the 220v outlet.
From here the miner should power on, but some miners may have a power switch which is why you will need the manufacturer's instructions.
Step 2: Connect Internet.
Now that you have your miner up and running its time to plug it into the internet directly with a CAT5 or CAT6 cable.
SIDENOTE: I've seen people use wifi adapters for these types of miners but for stability in connectivity reasons its not ideal.
Once the internet is connected, you can now begin to configure your miner's software, but first, we must locate the miner's IP address.
Step 3: Access Router.
To obtain a miner's IP address, you must first access your router configuration menu. If you are unsure of how to access your router's settings be sure to Google the make and model of the router. Each manufacturer should have instructions with routers IP address and default user name and password.
Step 4: Locate Miner IP Address.
Inside the routers settings menu will be an option to see all the devices connected to the network along with each device's IP address. You will want to copy and paste each IP address into your Google Search bar until you see a screen asking for your miner's user name and password.
Step 5: Login into Miner.
Each miner has a default user name and password located in the miner's installation instructions. Take Bitmain miner's, for instance, their default user name and password is "root."
Once you login to your miners operating system, you can now begin configuring your mining pool and wallet address. Be sure to leave the miner browser open while you get a wallet and mining pool address.
Step 6: Create a Wallet.
If you haven't set up a wallet by now, you will need to create one. One of the best software wallets for Bitcoin comes from a company called BRD which has been around for quite some time. However, if you're looking to hold some Bitcoin long term its recommend to invest in a hardware wallet.
Once your wallet is backed up and secure be sure to get a copy of your Bitcoin wallet address.
The next thing you will need to do is select a Bitcoin mining pool and sign up for an account.
Step 7: Sign Up at Mining Pool.
One of the first Bitcoin mining pools goes by the name of Slushpool and is a personal favorite of mine mostly due to its phone app monitoring features. Be sure to sign up with the link below and follow the help guide to setup worker names.
Slushpool Setup Guide Link.
Now you can select your pool server address but be sure to use one that is closest to your mining operations location.
Step 8: Configure Miner.
Copy-paste the pool address URL box along with the "your-username.your-worker-name" you setup with Slushpool into the user ID box.
The password box can be left empty when mining on Slushpool but other Bitcoin mining pools may require it so always refer to the mining pools getting started section for exact details.
Once you've copied everything into the miner configuration panel be sure to hit save and so the miner can now start pointing towards your pool and wallet address.
Congratulations, you have now crossed through the doorway of officially becoming a Bitcoin Miner.
Undoubtedly Bitcoin mining has made people a fortune over the years. However, that doesn't mean anyone who attempts mining Bitcoin will have guaranteed success with it. Most of the reports of profits made from Bitcoin mining are from wise investors who carefully planned out their mining operations with cheap electricity while using the most efficient mining hardware.
Speaking from my own experience, I too have witnessed Bitcoin mining being quite profitable partially due to Bitcoin,s bull run late 2017. Now after two years of running S9 Antminers I'm looking into upgrading my hardware as the S9's are no longer profitable on my .11 cent kW rate.
That's why I recommended calling the utility company first to get the kW rate so you can use it for better accuracy when entering a Bitcoin Miners wattage and hash rate into the mining profit calculator.
Keep in mind mining calculators can only estimate what a current ASIC miner's profits are as many unpredictable factors like mining difficulty and Bitcoins price make it change regularly. With that said they can still be a great tool to decide whether Bitcoin mining is right for your situation or not.
2
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:22 pm

The BEST Crypto Miner for Mining at Home - Goldshell HS1-Plus|14:03
3
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:21 pm
ASIC vs CPU mining [ edit ]
An ASIC Bitcoin miner is designed exclusively for the purpose of mining bitcoin. Though significantly more expensive to purchase, they are far more powerful (higher hash rate) and electricity-efficient than CPUs and GPUs (graphics cards) - used for mining in the early days of bitcoin - and even FPGAs (field programmable gate arrays), which were, in 2011, the most efficient option. [3] According to Mike Murray, creator of The Geek Pub, a $2500 ASIC miner is as powerful as 400 GPUs, or 12,000 CPUs, which would cost $18 million. [4] For reference, as of February 2018, the Bitmain Antminer S9 possessed the highest available hashrate at.
14 TH/s, with an efficiency of.
0.1 Joule per GH/s, and cost $3200 on Amazon, not including the power supply. [5]
ASIC for Bitcoin mining hardware [ edit ]
Mining is now so competitive, and the difficulty rate so high, that attempting to do so without an ASIC is unprofitable. [3] [4] [6] Because ASIC mining hardware is so expensive, ASIC for Bitcoin mining is done by companies in thermally-regulated data-centers with access to low-cost electricity. Many of these companies lease part of their mining power as a service. [6] [7]
Cloud mining, or mining as a service (MaaS), is an alternative that allows individuals to mine bitcoins without handling their own hardware. [8] Because of the high cost it implies, many people may not want (nor be able) to invest in from-home ASIC mining. The hardware consumes high amounts of electricity, necessitates a powerful ventilation system, and is in itself expensive. As the writers at Coindesk put it, "cloud mining means using (generally) shared processing power run from remote data centres. One only needs a home computer for communications, optional local bitcoin wallets and so on" [8]
Several of the businesses listed below lease hosted processing power to customers.
Bitcoin ASIC mining companies [ edit ]
Listed below are some companies that produce bitcoin ASIC hardware and/or provide a cloud-based mining service.
KnC Miner [ edit ]
KnC Miner is a Sweden-based (Boden) start-up cofounded by Andreas Kennemar and Sam Cole in 2013, when they merged their IT consulting firm KennemarAndCole AB (KNC) with the chip designer house ORSOC in order to produce better Bitcoin mining hardware than was available at the time. [9] During the following years, they managed to raise $32m in venture funding from investors, including Accel and Creandum, and became one of the industry's fastest-growing mining firms [10]
On September 2nd 2014, KnCMiner launched the cloud service KnC Cloud, with facilities located in a former helicopter hangar 15 kilometers away from a Facebook datacenter in the Arctic. This location is beneficial for any mining center, since the naturally cold air saves the company cooling costs. [11]
In May 2016 customers successfully sued the company over delayed shipments and problems with the Titan, one of their hardware products. [12] Later that month, KnCMiner declared bankruptcy. [13] At the time, Sam Cole denied any connection between the lawsuit and the bankruptcy filing, claiming that the latter was a preemptive measure against the halving of the bitcoin block reward (which became 12.5 BTC that year). [13] In August of the same year, KnCMiner was bought by GoGreenLight, to continue operating the ASIC mining pool and data centers. [14]
CloudHashing [ edit ]
CloudHashing was founded by Emmanuel Abiodun in 2013. It operates from data centers in Kansas City with hardware by Butterfly Lab, Terrahash and KnCMiner. It was the first firm to offer MaaS. [15] In October of the same year, CloudHashing built a facility in Iceland, which generated more than $4 million worth of Bitcoins at the time [15] The company would lease 80% of its computing power to costumers. By December 2013, they had 4500 customers who were paying $999 a year to use machines that at the time cost $20,000 on the open market. [16]
In March 2014 Cloud Hashing had the combined calculating power of.
1,500 Th/s. The entire Bitcoin network's calculation power was 38,000 Th/s; thus, 4% of the entire network power was concentrated in the hands of this company.
After a successful 8-month-long period in 2014, during which the company mined over 35 thousand bitcoins at an equivalent value of over US$21 million based the price of bitcoin at the time, Cloudhashing merged with the advanced hardware manufacturer HighBitCoin to form PeerNova, releasing the PetaOne Blade, which featured a 28nm chip with a power efficiency of 0.35W per GH/s. [17]
In 2015 CloudHashing signed a supply deal with Australian bitcoin company digitalBTC, to run digitalBTC hardware in data centers in Iceland and Texas. This deal was dissolved later that year when digitalBTC pulled out of the agreement. CloudHashing then began increasing their customers' management fees and buying back contracts. [18]
How To Setup An ASIC Bitcoin Miner In 3 Easy Steps.
Setting up and using Bitcoin ASIC miners is currently one of the best ways to start mining for Bitcoin. Most of the veteran miner's already known by now, mining on a laptop these days isn't very profitable. Even some of the earlier versions of application-specific integrated circuits(ASIC) miners are no longer efficient in today's Bitcoin mining.
That's not the only important part you should know before jumping into mining Bitcoin with ASIC. You see there are a few other basic requirements you'll need in place to be successful at running even just one Bitcoin Miner let alone multiple machines.
How To Start Mining Bitcoin With Asic Miners.
Mining Requirement Checklist Purchase Bitcoin Miner Hardware Bitcoin Miner Setup and Configuration.
Sounds easy right?
Don't worry, in this guide; I answer all the commonly asked questions I get from over the years of my experience in ASIC mining. Questions like "where to buy bitcoin miners," "how to set up a bitcoin miner," "what is the best bitcoin miner" and more, will all get answered in this article.
ASIC Mining Requirements Checklist.
One of the most popular mistakes new miners make is poor planning of where the ASIC miners will operate. That's why it's always a smart idea to have the location checked out first before making any financial decisions as to whether you should pursue mining Bitcoin.
ASIC Bitcoin miners consume decent amounts of electricity which is why it's important to know what the cost of the location per kWh ($) is before purchasing any miner hardware. Once you have the utility companies' prices, you can use a mining profitability calculator to estimate any Bitcoin ASIC miner's current profitability and operational cost.
This estimation alone should give you enough insight to decide whether all this is even worth pursuing given the locations kWh rate so make sure you learn how to use a mining profit calculator properly.
Each Bitcoin ASIC miner also requires its own dedicated 220v outlet. Having an inspection on your location's electrical system is another must-have to ensure you don't overload any circuits.
Another issue is with miners is heat. ASIC miners are notorious for heating small spaces in the wintertime which is excellent, but when summertime rolls around, you'll need a plan to circulate fresh air.
Other than a high-speed internet connection this all the core requirements your location needs to be deemed permissible for Bitcoin mining. However, I want to add in the fact that you will need an ethernet cable running from either your router or network switch for each Bitcoin Miner you plan on operating.
4
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:21 pm

Project Zero - The Micro Miner \u0026 Staker|11:20
5
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:20 pm
One fundamental aspect of cryptocurrencies is mining. The fact that a computer can mine for virtual coins over a certain period is something to research appropriately before doing it.
Bitcoin mining refers to securing transaction networks and process each transaction successfully. The way computers do this is by solving algorithms that make them chain several blocks of the transaction. By doing this, Bitcoin miners get paid with other Bitcoins plus transaction fees.
Keep in mind that this is the foundation of Bitcoin mining, but many other things are going on in each transaction.
Here are 10 important facts that you need to know about Bitcoin mining.
Mining is Not for Everyone.
While mining Bitcoins seems like a profitable idea. It's way too expensive if you want to do it right. Bitcoin mining tends to be specialized, and professional miners use huge spaces filled with computers whose specific purpose is to mine 24/7. If you only have a laptop, it may be too expensive to mine up to the point of getting considerable profits. To invest in bitcoins, you can visit Bitcoin Era.
You Don't Have to Invest in Bitcoin to Mine Bitcoins.
While trading Bitcoin involves executing profitable trades to earn more money, you don't need to do that while mining. With mining, you're offering your computer to process transactions in a particular "Mining Pool," which means that you're going to get paid for offering that service, which is not the same as trading.
You Need Powerful Hardware to Mine Bitcoins.
As said before, mining Bitcoin properly can get too expensive if you want to take it seriously. If you want to mine properly and get considerable profit gains, you need a powerful GPU (Graphics Processing Unit) or an ASIC Miner (Application-Specific Integrated Circuit). ASIC Miners are computers that were designed specifically for mining Bitcoins.
Mining Consumes Too Much Energy.
The profitability of mining depends on your region's power costs. Mining a single Bitcoin can take up to 10 minutes in the most appropriate circumstances. The reason not everyone is mining is that it consumes way too much energy, so if you're going to try it out, make sure that you can cover the power consumption costs.
To Earn Money, You Need to Provide Proof of Work.
Mining is seen as a competitive activity. While the work essentially is solving a mathematical puzzle, your computer needs to be the first one to solve these puzzles in order to get the money.
While mining has been proven to yield great results for some people, the fastest way to get Bitcoins is by buying them since you get the money instantly.
Bitcoin mining is Not Legal in Every Country.
While many countries allow Bitcoin mining, you need to check your country's regulations to see if it's legal there, and what the tax implications of the activity are.
You Need to Set Up a Bitcoin Wallet.
If you want to mine Bitcoin, you need to set up a digital wallet where you're going to receive your earnings. Remember that each wallet has a unique private key; if you lose it, you lost your Bitcoins forever.
You Need to Join a Proper Mining Pool.
If you are a beginner, you need to choose a credible mining pool to work with. These usually give fewer profits, but you can still gain significant profits. To choose more accurately, you can look for graphs that show the biggest pools and choose one.
Mining Takes Time.
Even if you get the best equipment on the market, you're not going to get huge profits instantly. To get the most out of mining, you need to do proper research, invest money in good equipment, sort out any power consumption issues, and wait patiently.
There are many things to keep into account before mining. It certainly isn't for everyone, but if you want to try it out, make sure that you prepare adequately and take your time to start seeing profits.
Asics Bitcoin mining.
An application-specific integrated circuit (abbreviated as ASIC ) is an integrated circuit (IC) customized for a particular use, rather than intended for general-purpose use. Because they can only be used for one application, ASICs are expensive to design and produce. [1] [2]
1 ASIC vs CPU mining 2 ASIC for Bitcoin mining hardware 3 Cloud Mining 4 Bitcoin ASIC mining companies 4.1 KnC Miner 4.2 CloudHashing 4.3 Allied Control 4.4 CEX.io 4.5 The CEX precedent 5 Chinese mining business 6 Legalities of the mining business 7 Downsides of the mining business 8 ASICs for Scrypt mining 9 See also 10 References.
6
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:19 pm

FPGA Mining Cryptocurrencies in YOUR HOME?!|12:56
7
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 03:18 pm
Hashrates for Opteron and Xeon CPUs.
I'm looking for the benchmarked hashrates of both a 1.0GHz Opteron 2007 CPU, as well as a 1.2GHz Xeon 2007 CPU. I looked here but didn't see them mentioned.
Also, on that references page, I don't see anything mentioned for how the hashrates were computed. What mining app is being used as the benchmarker for all those stats? Thanks in advance!
Although those particular CPUs aren't listed, you can infer from the other CPUs in that table that the hashrate will be only a few Mhash per second. CPU mining isn't cost effective today. (Which is why the list of hash rates for CPUs is fairly out of date.) See also this question about whether CPU mining is worth it.
To answer your follow up from the question comments, it's not entirely clear how ASICs will change mining because the number of ASIC machines shipped has been so limited. If ASIC vendors could deliver in volume at the promised amounts of GHash, yes, they would probably be the only lucrative way to mine going forward. But all predictions regarding the future of mining have to be taken with a grain of salt: it's always hard to predict the future. The end of GPU mining has been predicted for a couple years now, but the rising exchange rate has been keeping it alive.
Best mining CPU 2020: the best processors for mining cryptocurrency.
The best CPUs for mining.
On the market for the best mining CPU 2020 has to offer? It's worth knowing that while over the past two years, cryto-currencies such as Bitcoin have peaked and dipped, mining for crypto-currencies has continued to intensify to the point where at present it's difficult to almost impossible for ordinary computer uses to mine them in any manner that is cost-effective.
The result is that mining rigs remain out of stock and not replenished, and serious miners are expected to have extended farms of hardware in order to keep going. However, there are cycles to economics, and while current conditions make it tough for mining, that doesn't mean to say it can't become accessible and profitable again in the future.
With that in mind, for hardcore miners and dedicated enthusiasts, it may yet be worth still investing in hardware for crypto-currency mining. Pair the best mining CPU with the best mining GPU and best mining motherboard, and choose the best crypto-currency for your needs, then you could soon have a mining powerhouse that can potentially start earning enough to pay off your hardware and energy use while still making some profit.
Here then are the best mining CPUs still on the market in 2020.
The best mining processors.
AMD Ryzen Threadripper 1950X.
The absolute best mining CPU.
Cores: 16 | Threads: 32 | Base clock: 3.4GHz | Boost clock: 4.0GHz | L3 cache: 32MB | TDP: 180W.
More on building Phi 7220 Mining Rigs...
Wow. What a community response. Unbelievable. Last week I posted on my latest toy, a rig that used eight Xeon Phi 7220 cards in a single 4u-server to achieve a total of roughly 24kH/s for cryptonote coins (in case you missed it, the original post is right below).
I had expected some interest in that merely because that was, to my knowledge, the new speed record for a single-node(!) mining rig.... but man, was I wrong: three thousand unique visitors in the first 48 hours, on a blog that didn't even exist until two days before. And tons and tons of interesting comments on questions, on both the blog and reddit.
Based on that feedback from the last three days, it's now become very clear that there's two follow-ups I'll have two write (else I'll drown in emails :-/). The first topic that came up again and again was "Vegas vs Phis" in terms of mining revenue, profitablity, etcpp .... and I promise, I'll write one - but I'll first wait for my 4×7250 node to arrive, so bear with me. The second big group of questions that came up again and again revolved around "how can I replicate that build" - i.e., how do the Phis work at all, where can I get them, and if I have them, how can I build a machine that'll take them. This latter question is what this post will be about.
Mining on Phi 7220 cards...
First off, it is kind of hard to get those 7220 cards - if you don't already have some, you'll probably have a hard time to get some. I got mine off ebay, but that seller - at least right now - doesn't list any any more, so manybe they're gone. Also, be sure to not confuse the x100 cards (3120, 5100, 7120, etc) with those newer x200 phis - the old ones will be about 5x slower, so think hard if that's worth it. Quite frankly, if you're interested in mining with Phis you'll be best off buying one of the 4×7250 self-bootable machines (I'll write more on that once mine arrives).
That said, if you already have 7220 cards - or miraculously found a good source for them - you'll have to find a way of actually hosting them, of getting them to run, and mining on them. In terms of mining software, lukMiner will run on them, and will run rather profitably. To get it to run, though, you'll need a copy of Intel's MPSS 4.x software stack to drive those 7220 cards - and since Intel took that product down that isn't all to easy to get any more. I still have an older copy from back-then-when, but don't have permission to share that, so you'll have to find somebody else to share that with you (If anybody that has a copy wants to share, please feel free to send a comment with a link!). Once you get both hardware and MPSS stack up, you copy luk-xmr-phi to the card, and run it; so that part is easy.
Now to the tricky question: How to actually build a rig with these cards. The problem here is that they seem to be working in only certain motherboards, and since they got pulled off the market there's no support. So all I can do is go and share the three successful builds I managed to create - without any warranty whatsoever that they'll work on your side.
Building a Rig - Option #1: the 24kH, 8-card, 4U server.
The build I used in my original post is a professional, off-the-shelf server from Exxact Corp. I used theirs because I know they had listed this product with Phis in the summer, so had pretty high confidence that would still work. For those interested in more details: It's a 4U server with two Xeon CPU slots, a C612 chipset (which seems to be important), 10 full-length PCI slots, and then (8+6) PCI power connectors, which works out perfectly. Since I didn't want to take any risks I bought a complete system from Exxact, with CPUs, memory, disks, 2x1600W power (fully redundant, so 4 PSUs actually), and everything else except the Phi cards, which I already had. In total - and with shipping - that set me back something like $6k, just as much as the cards themselves.
Of course, I could probably have built that thing from parts for much less (the two un-used redundant PSUs alone are worth several hundred bucks) ... but already having $6k in Phi cards on the line I didn't want to take any risks - and quite frankly, so far I've been extremely pleased with this purchase (and Exxact have been most helpful so far, too!). For anybody wanting to get this system, here a pic of both the rig, as well as the exact sticker of that machine (and I'm sure Exxact would be happy to help, too - just mention what it's for, they'll remember me :-/).
One final note: The careful reader will have seen that I mentioned ten PCI slots, yet my build uses only eight cards. Yes, I did fit 10 cards in there, but ran into some issues. First of all, I blew some circuits in my basement ... and worse, at home (where I built the rig) I only had 110V power, which wasn't all that good for the 2x1600W PSUs. And finally, when I did get it to boot the machine became unstable with 10 cards - maybe bec.ause of heat, or maybe because the drivers don't like that many cards, I don't know. Eight work, 10 I'm not sure. Might get back to trying, but for now I don't have any spare cards any more, anyway. Here a pic with 10 cards, but again, right now I only run eight. I'm not crazy. Not really, anyway.
Option #2: A Cheaper, but still professional rig.
Since $12k in a single rig is admittedly a somewhat scary thought I also played around with finding cheaper, smaller options. After looking primarily for the same board generation and C612 chipset I ended up with a SuperMicro SYS-5018GR-T server.
Initially this didn't produce enough air flow to cool the cards, but after a bit of "friendly persuasion" on behalf of the fans (ie, cutting the two control cables of the fans to make them go full blast - see pic) that worked out of the box, too.
Got the barebone for $1100 off ebay, plus a refurbished Xeon, and a single DIMM of memory .... all together probably around $1400 (plus cards) - not that much off what you'd pay for a typical desktop PC to put GPUs in - but in rackable form-factor, so you can actually farm it out to a co-hosting place.
Option #3: The totally Stone-Soup, Do-it-yourself Build.
OK, before I went ahead and bought all these servers and cards for now close on $20k I (obviously?) first did some simpler tests, buying only a single card, and testing that in something I already had. "Luckily" I had lots of un-used workstations lying around that I could test with ..... the reason I say "luckily" in quotes is that the reason I have those in the first place is that they started out as GPU mining rigs, but since "several" of those GPUs have died the mining death over the last few months I now have some unused workstations :-/. (yes, one of the reasons I switched to mining on Phis is that I simply had too many GPUs die on me - in particular a certain brand, but don't want to offend anybody, so will keep that part to myself).
Anyway - tested many different machines, and most didn't work. Either they didn't boot at all, or they booted but didn't show the cards, or had too old BIOSes (they need above 4GB decoding), etc. Finally found one of my machines that took that card, and for everybody that wants to replicate, here the specs:
Motherboard (likely the most important part): Asrock X99 Deluxe CPU: Some X core Xeon E5 bought off ebay - probably won't matterl A cheapo PCI 1x GPU to drive a monitor (won't need it for mining, though). Three Xeon Phi 7220 cards (started with one, but then put in two more) EVGA 850GQ (850W) PSU Phanteks Enthoo Pro M case (won't matter), and a single DIMM of 8GB of RAM. Lots of fans. CentOS 7.3 with MPSS 4 stack and lukMiner 0.8.6.
And la voila, here we are:
In terms of cooling, a regular workstation's case fans won't be enough. Not by a long shot they won't. At first, I added this semi-professional Lasko fan:
This obviously blows air to the inside rather than out of the case, but if you leave the case open that's OK (and if not, it's strong enough to make all other case fans go backwards, too, LOL).
Eventually, however, that setup looked a bit shaky even by my standards, so went ahead and scouted for some smaller fans to cool this. Typical case fans won't do, even if mounted right behind the cards. Eventually, however, I found some higher-powered fans on ebay (see, for example, here for a listing). The blue (printed) shroud doesn't actually fit the x200s (they have their power connectors organized differently from the x100s), but the case wouldn't have had enough space to host those shrouds, anyway, so simply took them off - the fans are strong enough to make enough air go through the cards even without a perfect fit. Oh, and of course: Duct tape is your friend In the following two pics, left one shows two such fans connected with two shashlik skewers and soem duct tape (I didn't say it was professional grade, did I?); the right one shows those fans mounted right behind the cards - one fan does one card, the other does two.
Again, I used the trick of messing with the fans' control cables, and simply have them go full blast (image on the left shows the fan connector cable cut open to allow a four-pin fan connector to connect to a two-pin 15V connector - the control wires aren't, but cut simply not connected, so they go full blast. Right image: That stuff connected to a 15V molex). With that, the machine is now up and running for three weeks, no issues whatsoever (well, had to fix a few issues with hung NiceHash connections in the miner, but the hardware works all right).
As mentioned above, I'm not sure that those builds can easily be recreated - for example, I have some other x99 boards that do not work, so I have no clue why this one does Ie, no warranties, and your mileage may vary). Anyway - for those that have some of those cards I hope this info will at least open a path to getting them up and running. As such:
Important Facts You Need to Know About Bitcoin mining.
8
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 02:56 pm

Micro Mining Crypto Currency AutoClaim Is It Worth It?|8:53
9
Mining / Re: Bitcoin mining.
Last post by Bitcoin - Feb 25, 2021, 02:55 pm
Monero Mining Benchmarks - CPU Mining With Select Dual Intel Xeon E5 Systems.
We recently started using Monero mining in our data center lab for a burn-in application. We are certainly far from a large operation accounting for only around 0.06% of the worldwide Monero hash rate. At the same time, our penchent for collecting data made us test a variety of configurations. We benchmarked several server CPU configurations and have data on the biggest drivers of performance. We also have resources to get started with Monero mining on your own systems.
The Quick Monero Background.
At the turn of 2017, and for the past several years, Bitcoin has been the largest cryptocurrency by far. Monero is a cryptocurrency that put an emphasis on privacy and is considered significantly more anonymous than Bitcoin. As a result, Monero has moved from a $0.50 / 1 XMR currency a year ago to $13/ 1 XMR as of today. That movement, and the privacy focus, has made Monero a top 5 cryptocurrency and pushed it into the mainstream with even a recent WIRED article on the currency.
The advantage of this has been that Monero is now very easy to exchange and has tools that are more mature than several other cryptocurrencies. For STH readers there is a larger implication. Unlike Bitcoin mining which is dominated by ASICs, Monero is currently best mined on GPUs. CPU mining can be profitable as well. That means STH readers have the infrastructure able to mine Monero.
Monero Benchmarks - Why STH?
At STH we have a unique position as we have an independent test lab facility with the largest array of different processors running at a given time. We even allow folks to try out different configurations with our DemoEval service. During downtime that affords us the ability to run, in a controlled manner, benchmarking and power consumption measurements. While there are various sources of user-submitted benchmarks, they do not provide exactly the same test setups to make apples-to-apples comparisons of Monero mining performance.
STH readers often have Intel Xeon E5-2600 series processors with spare CPU cycles and potentially power budgets in data centers, so this is an application with a small footprint that can help offset some data center costs. For those running E3 and Xeon D CPUs, this is far from an ideal application. For example, a Xeon D-1587 with 16 cores / 32 threads performs about the same as a single Xeon E5-2630L V3 with 8 cores/ 16 threads. This is due to the L3 cache size reduction on Broadwell-DE and the importance of cache with Monero mining.
We do not advocate buying dual processor Intel Xeon E5 systems for the purpose of Monero mining. At the same time, it can be a good way to burn extra CPU cycles on servers that are already deployed.
At the end of this article, we have some resources to get you started with mining Monero.
Intel Xeon E5-2600 Monero Mining Performance.
We have a lengthy thread in the STH forums on Monero mining performance. That has a much larger set of benchmarks and instructions to get up and running on your servers within minutes. We wanted to provide a few charts with analysis. We are going to start with the raw hash rates of 18 test cases we are going to present today. In the linked thread we have several other configurations tested but we did want to focus on a few samples.
Intel Xeon Monero CPU Mining Performance Comparison Raw Hashrate.
As you can see, the quad Intel Xeon E7-8870 V3 performed extremely well. Unfortunately, we did not get to test the Dell PowerEdge R930 with 4x E7-8890 V4's we had in the lab using our newest image. As a point of comparison, that system scored 2200H/s on our old image while the quad E7-8870 V3 above scored 1585H/s with that image. Still one can see the main trends here. The 10-14 core dual Xeon E5 systems performed relatively similar to one another.
The next question is how well these systems performed with regards to the number of cores, threads, and L3 cache. Here is a summary of what that looks like. As you can see, the single Intel Xeon E5-2630L V3 system was an outlier. Coincidentally, it is also the lowest power system of the 18 we tested.
Intel Xeon Monero CPU Mining Performance Comparison Summary.
We are going to keep all of these charts in the same order (by descending total hash rate from left to right) since we are presenting a lot of data. In the first deep-dive slide we are going to look at the L3 cache impact on mining performance.
Intel Xeon Monero CPU Mining Performance Comparison L3 Cache.
As you can see, this seems to be the best indicator in terms of performance and why the Monero CPU mining community often uses L3 cache / 2 as the number of threads. We actually tested all 18 configurations with different recommended thread counts and L3 cache MB / 2 was the optimal solution for each system. The standard deviation on the figures here was the lowest of our three deep dive slices at 1.66 with an average/ median of 16.3/ 16.1 respectively.
Intel Xeon Monero CPU Mining Performance Comparison Base Clocks.
As you can see, several of the lower-power chips performed well in this comparison because the low power Intel Xeon chips tend to have low base clocks. The Xeon D family is hindered by the lower L3 cache per core.
We also wanted to provide a look at the H/s figures based on Turbo clocks. We are using the max single core turbo speeds here not the all core turbo speeds, however, there is usually a correlation in terms of the number of clock speed increments.
Intel Xeon Monero CPU Mining Performance Comparison Turbo Clocks.
As you can see, the low power chips again proved fairly excellent. We did see the impact of clock speeds on mining, however, the biggest differentiator was the L3 cache size.
In terms of power consumption, here are a few data points. The 4x E7-8870 V3 machine pulled 988W on our 208V circuit. The dual E5-2628L V4 system in a 4N / 2U chassis were around 180W each and the E5-2630L V4 machine was 205W in a 1U chassis. The Xeon D-1587 node was 118w while the single E6-2630L V3 was a paltry 98w in their 1U chassis. Unfortunately, we were looking for raw performance figures rather than absolute power consumption numbers.
Resources and How To Get Started.
If you want to get started easily, we have very simple resources that we have been working on, including Docker CPU and GPU mining images.
Here are a few relevant threads in the STH forums:
We are using Docker as we found a negligible performance impact (0.1% or so) with the ability to utilize orchestration to push the images over a Docker Swarm.
As an example, if you want to start with a Docker node immediately, you can simply:
Sign up at Minergate for an account (remember the e-mail you use, we are going to assume [email protected]) Run the following command (use your Minergate email and you can change -it to -d if you do not want to see output):
docker run -it -e username=[email protected] servethehome/monero_cpu_minergate.
That will download and compile the popular CPU miner, determine the best thread count and start mining directly to the Minergate pool. We are using Minergate as it had better performance than several other pools we tried. In the forums we have several images already using different mining pools. We also already have images for using nvidia-docker and mining on NVIDIA GPUs.
We are going to have several more guides on getting Monero mining online easily on your server clusters. In the past few weeks, this setup has already mined around 100 XMR (or $1300+) worth of Monero just using spare CPU cycles and power in our data center lab.
If you wanted a great reason to join the STH Forums community, the threads linked above are a great place to start and this is a fun hobby that can earn some significant money to offset data center costs if you already have the hardware. We would not recommend buying hardware solely for Monero mining, however it is a fun way to learn key concepts for Docker and utilize excess capacity.
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Last post by Bitcoin - Feb 25, 2021, 02:55 pm
Was ist der Sinn von Xenon Network?
Die Ersteller von Xenon Network haben einige Probleme mit dem ursprünglichen EOS-Projekt und wie sie läuft. Sie sehen beispielsweise bei dem EOS ICO ein potenzielles regulatorisches Kopfzerbrechen.
Xenon Coin Network Fazit.
Xenon Network ist eine EOS-Altchain, die ihre nativen XNN-Token durch eine Abwurfkampagne startet. Diese Airdropkampagne verteilte im Oktober und November 2017 XNN-Token an Bitcoin- und Ethereum-Adressen und dann im Dezember 2017 noch mehr Token an andere Kryptobenutzer (durch ein ,,Proof of Individuality" -System).
Wenn das Xenonnetzwerk im Juli 2018 startet, werden die Token für die Verwendung im Netzwerk austauschbar sein.
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