When mining cryptocurrencies that use the Ethash hash function (ETH, ETC, EXP and others), the greatest load in the calculations falls on the video card’s memory. The GPU is very lightly loaded. This allows you to simultaneously mine two cryptocurrencies using one video card. As a rule, they use the Claymore’s Dual Miner program, which works great simultaneously with the Nvidia and AMD video cards in the same rig under the 64-bit Windows 7 or 10 operating system. The latest version of this program can be downloaded from the links to https: // bitcointalk. org / index.php? topic = 1433925.0.
Setting up dual mining consists in setting the optimal parameters for overclocking video cards, which should provide maximum performance, stability, automatic fan control and reducing the load during overheating, as well as setting parameters associated with a particular mining pool.
The record of the necessary settings of the mining program is recorded in a BAT file intended for its launch. Let’s consider in more detail the procedure for setting it up to start dual mining.
Dual mining can be performed both on one pool (for example, Ether and Pascal on Coinotron ), and on different (for example, Ether on Ethermine and Decred on pool.mn/dcr ). When setting up mining of the selected coin for a specific pool, you need to familiarize yourself with the help section on its website. Recommended parameters should be indicated in the parameters for launching the BAT batch file.The easiest way is to configure the launch parameters if the same video cards are in the rig.
If you do not take into account overclocking parameters, for NVidia and AMD video cards, setting the BAT file for dual mining looks as follows (for the Coinotron pool when mining ETH and Pascal):
EthDcrMiner64.exe -epool coinotron . com : 3344 –ewal username.worker_name -epsw work_password – esm 2 -dcri 22 – dcoin pasc -dpool coinotron . com : 3348 -dwal username.worker_name -dpsw work_password -allpools 1 -allcoins -1
In addition, it is necessary to set the parameters for acceleration, fan control and temperature . Their setup during double mining does not differ from the parameters used when mining one coin. For finer tuning of the miner, commands are used, which can be found in the Readme !!! file, which is located in the miner folder.
Let us consider these values in more detail:
If the computer freezes during the start of mining, then it is worth increasing the size of the swap file, reducing overclocking of cards, and also adding the -gser 1 or 2 parameter to the command line to more smoothly enable video cards in Ethash coin mining.
Sometimes, when the cards overheat, the question arises, how to disable dual mining in the Claymore’s Dual Miner program. To do this, just add the -mode 1 parameter to the BAT file , which will switch the program to mining only the first coin. If you want to enable dual mining, you need to set this value to -mode 0.
As an example, consider how to mine a Metaverse (ETP) coin in a dual.
To mine this cryptocurrency, you need to open a wallet, select a pool with the lowest ping, configure a batch file to run and run it.The wallet for this coin can be downloaded from the official website, or use the wallet on one of the exchanges, for example, Bitfinex, HitBTC, RightBTC. The addresses of the pools can be taken from the site https://explorer.mvs.org/mining.
For the Russian pool http://comining.io when mining the second Pascal coin on Coinotron, the batch file will look like this:
EthDcrMiner64.exe -epool s.comining.io:9999 -ewal address1.worker1 -epsw x -esm 3 -dcoin pasc -dpool coinotron.comhaps348 -dwal login2.worker2 -dpsw password2 -allpools 1 -allcoins -1
In order to have the highest profit, you need to constantly monitor which coins can be profitably mined in dual.
The first coin can be used to mine Ether, Ether Classic, Expanse, Musicoin, Ubiq and other, less well-known cryptocurrencies corresponding to this algorithm.
As a second cryptocurrency, you can mine: Decred, Siacoin, LBRY Credits, as well as less common cryptocurrencies with Pascal, Blake2s (for example, Verge, NevaCoin, Tajcoin) and Keccak (SmartCash, MaxCoin and others). When mining new, little-known coins, you need to understand that in the future there may be problems with their sale due to the lack of support on most cryptocurrency exchanges.The most profitable coin for mining at a particular point in time can be tracked on the Whattomine website.
The income from mining the first coin can be viewed at the following addresses (for the most famous cryptocurrencies):
The profitability of mining the second coin can be found at:
Profitability calculators for other coins can be found at https://whattomine.com/calculators . Tracking the benefits of mining on these calculators will help to understand that it is better to mine in a dual with ether, or its clones.
To enter values into the calculator, you need to know the approximate mining speed of a given algorithm, power consumption and the cost of one kilowatt in dollars.
Coin mining according to the Ethash algorithm, as a rule, is performed at such a speed:
The second coin at standard intensity (about 30) on the latest versions of Claymore’s Dual GPU Miner on AMD cards of the RX570 / 580 level is mined at a speed of about 900 Mh / s for Decred, about 500 Mh / s for Pascal, for Keccak – about 300 Mh / s . On Nvidia cards, Decred mining speed is about 2-3 times lower, Keccak – about 2 times lower.
At the same time, consumption, compared with the mining of one coin, increases by 30-50 watts. Accordingly, the heating and wear of the cards increases.Based on these figures, mining the second coin is practically profitable with free or very cheap electricity.
When mining the second coin, the following factors must be considered:
Double mining allows you to earn additional cryptocurrency without spending additional costs on the purchase of new equipment. The rate of most coins that are mined as a second cryptocurrency is quite low, and the complexity of mining profitable tokens is very high. In this regard, the extraction of the second coin now actually does not compensate for the increase in electricity costs.
Although mining a second coin is currently not so profitable. as it was a few months ago, it can be cost-effective at a low price for electricity. In addition, in winter, an increase in the power consumption of video cards during dual mining can be beneficial in the form of heating the room in which rigs are installed.
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