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What is an ASIC device actually?

21. March 2014 by digital-coin.net Leave a Comment

Specially when it comes to Bitcoin mining you read everywhere about these ASIC devices. What is that actually?

ASIC stands for “Application Specific Integrated Circuit”. ASIC’s are specially designed pieces of hardware for performing dedicated tasks only. Nothing else. But this as efficient as possible. So when it comes to the hashing algorithms necessary to mine a specific digital coin and verify hashed transactions, ASIC’s are designed and manufactured to perform exactly the necessary hashing only and nothing else.

 

 Advantages of an ASIC

  • fast; specially at release date
  • energy efficient

Disadvantages

  • investment costs can be pretty high

What other software do I need to get an ASIC to mine?
Here the usual suspects are to listed again: cgminer and bfgminer are your chosen tools to power your ASICS. I plan to do a little tutorial soon showing you how to get a simple USB ASIC to start mining.

Posted in: News Tagged: asic, bfgminer, bitcoin, cgminer, litecoin, miner, usb

Evaluate an ASIC Device

16. March 2014 by digital-coin.net Leave a Comment

When you played around with CPU mining, you shouldn’t too much anyway as it is not worth it anymore, and you are still interested in mining digital coins, then it is time to invest in some mining hardware: Either GPU based or ASIC device based. Which one you choose, is up to you. There are a few things to consider when evaluating the appropriate device(s).

Here are a few bullet points to consider to pick the best device at this point in time:

Timing is everything
The most important is to get the right miner at the right time: fast hashrate processing using as less power as possible. This is important to get back your invested money as soon as possible. When I was reading though forums and tutorials and did some calculations it took most miners about 4-6 months to get back their investment before earning money.

Availability
Make sure, the device is available when you order a product. There are many ASIC producing companies promising the latest and greatest mining rig soon. This ‘soon’ can be in a few days or in a few months. It does not help, if the rig got can process the ideal hashrate as per today if they deliver it finally in a few months when the mining difficulty increased and the rig it is outdated, it will take ages to get even the investments costs back (if at all). To be fair, many companies offer then better hashrate processing, but do not take that as a given.

Profitability calculation
There are many sites offering some calculations based on the currency you are mining. Here are a few to do your first calculations. There are many more site around, just use your favorite search engine to find more if you like.

  • http://www.bitcoinx.com/profit/
  • http://www.vnbitcoin.org/bitcoincalculator.php
  • http://www.coinwarz.com/calculators/bitcoin-mining-calculator
  • http://blockchained.com/profit/
  • http://btcinvest.net/en/bitcoin-mining-profit-calculator.php

All of these profitability calculators take different parameters, so pick the one which suits your needs best.

Example
Lets do an example here: Lets assume we buy a miner today having the following specs:

  • Miner costs: 3’199 USD
  • Hashrate: 320GH/s
  • Power usage: 320W/h

The electricity costs here are around 0.13 USD/kWh. You will find these numbers probably on your providers or community/city’s homepage. So if we do the calculations for 90 days we would get the following:

  • Income for 3 months: 1281.22 USD
  • Daily income: 7.57 USD
  • Bitcoin per day: 0.01 BTC

After around 3 months we would have our investment back and then can really start earning money. Sounds like a good deal.

Posted in: News Tagged: asic, bitcoin, calculations, gpu, miner, mining device, mining rig, profitability

First try with CPU Mining (incl Tutorial)

24. November 2013 by digital-coin.net Leave a Comment

After getting a quick overview of digital coins, having collected one or the other free coins, we want to give it a try to mine our first coins. Lets have a look at that topic:

To mine coins we got the following options to mine with:

CPU Mining: This is the easiest way probably to try mining for coins as a first run. The requirements here are pretty basic: You need a CPU. Luckily every computer got that. And you need a program called cpuminer. Cpuminer is also known as “minerd”. Sign up to join a mining pool and you are ready to go. Advantages of mining with your CPU are pretty obvious: almost no requirements, no additional hardware besides your CPU. Disadvantage is the performance of you CPU: it is pretty slow compared to the other methods. Your energy costs will eat up all of your profits.

GPU Mining: Mining with your GPU is already a much more efficient way to mine coins and was the next step after CPU mining. Compared to your CPU the GPU is able to solve the hash values much more efficient; you get way more out of your energy bills. To mine with your GPU you need a modest graphics card which is supported by the GPU miners like cgminer. Most modern Radeon or Nvidia cards are supported. Requirements compared to CPU mining are only the additional graphics card you need – or even better several of them – and mining makes much more fun.

ASIC: ASIC hardware are specialized devices produced for only one task: To mine coins. But this in the most efficient way: This gives you the best hash rate/power consummation ratio of all of the three methods mentioned. However, you have to have access to such a device so there is an additional cost.

To jump directly into mining and gain my first experiences, I have chosen for the first option, the CPU mining way.

So, these are the steps we will follow:

  • Download cpuminer for your OS
  • Join a mining pool
  • Run cpuminer with appropriate parameters for your pool
  • Watch the numbers and have it run for a while

That’s it really. So lets have a look at this in detail:

Download cpuminer
Depending on your operating system, you have to download cpuminer (minerd) from this site or you use the OS internal packing system (like apt or yum). If you have to download it, make sure to pick the right architecture (eg x86 or x86_64), download the archive and extract it to a directory of your choice.

To install with a Debian based system like Ubuntu you simply run “sudo apt-get update” and “sudo apt-get install cpuminer” and the system does the magic.

Join a mining pool
There are several mining pools out there, all with different rules like fee’s and payout models.

  • Bitcoin mining pool comparison
  • Litecoin mining pools comparison

I tried my luck with a Litecoin pool and picked minersdream.com: most green boxes and no block fees. So browse to your chosen pool’s website and register your account. When done you have to add a “worker”. You need a worker for each of your device you will have to support your mining activity. As we just give it a try with our cpuminer, you need to add only one for the time being. Remember the name and the password of your worker, we need it in a second.

When you got your worker, we will start our miner soon. Depending on your OS, open up a terminal or command prompt and type in the following command:

minerd –url=stratum+tcp://stratum-eu.minersdream.com:3333 –userpass=USERNAME.WORKER:PASSWORD

(Please make sure to redirect to the correct path for your minerd binary. Replace USERNAME, WORKER and PASSWORD with you own values)

When you typed in everyt correctly, you should get an output like this:

cpuminer running in commandline

cpuminer running in commandline

 

Perfect, our first test is running successful; our CPU miner is mining.

Tip to have minerd  running in the background
To have cpuminer running in the background while you are  working, you can decrease the priority of it. In Windows you start up the task manager, tab “Processes” and then right-click on minerd and select priority “lowest”. (Not having windows, hope this all correct…)

In Linux you run the command like this:

nice -n 19 minerd –url=stratum+tcp://stratum-eu.minersdream.com:3333 –userpass=USERNAME.WORKER:PASSWORD

This sets the minerd task to the lowest priority and have it running in the background.

 

Posted in: Tutorial Tagged: asic, bitcoin, cpuminer, for dummies, gpu, litecoin, miner, minerd, mining, mining for dummies, newbie, tutorial

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